Feed suitable for weaned piglets and application thereof

Abstract

The invention aims to disclose a feed suitable for weaned piglets and application thereof, and can effectively solve the technical problem of diarrhea caused by stress of the weaned piglets due to the fact that the gelatinization degree and the hardness of an existing superfine grinding feed cannot be well coordinated by adopting a specific ration component proportion and combining a specific nutritional index level. The piglet feed containing superfine ground corn is prepared by adopting a specific processing technology and combining with a specific raw material ratio, a unique expanded feed daily ration system is constructed, the diarrhea condition of weaned piglets is effectively improved, digestion and absorption of nutritional ingredients of the piglets are promoted, the utilization efficiency of the feed is improved, and the survival rate and growth performance of the piglets are improved; and the overall health management of the farm and the improvement of economic benefits can be indirectly promoted.

Description

Technical Field

[0001] The invention belongs to the technical field of animal feed, and in particular relates to a piglet feed, and more particularly to the technical field of feed for improving the production performance of piglets and its application. Background Art

[0002] Gastric ulcers usually occur at the junction of the esophagus and the gastric cardia mucosa, and are related to excessive gastric acid secretion. The incidence rate is higher in pigs aged 3 to 6 months. When piglets are 6 weeks old, their digestive system has become more complete. Under normal circumstances, nursery pigs rarely have problems with excessive gastric acid. However, when piglets adapt to creep feed, gastric acid secretion will continue, and high pH components in the feed are needed to neutralize it. If piglets cannot get enough feed, hunger will cause excessive saliva and gastric acid secretion. The accumulated gastric acid for a long time cannot be neutralized, which will damage the stomach wall and form ulcers. Gastric ulcers will worsen, the ulcer area will expand, new ulcer foci will appear, and even serious consequences such as ulcer bleeding or gastric perforation may occur. Gastric ulcers may be caused by a variety of factors, such as infection, poor feed quality, insufficient drinking water, use of non-steroidal anti-inflammatory drugs, stress, etc. It is difficult to diagnose in the early stage, and the recovery period is long and the cure rate is low. It can be restored by timely neutralizing gastric acid and maintaining stability in the stomach, especially balancing the pH value.

[0003] Early weaning of piglets can reduce the feeding burden of sows, improve the production performance of sows, enable them to recover their strength faster, and improve their reproductive performance. After weaning, piglets leave the sows and switch from breastfeeding to collecting solid feed. They face dual physiological and psychological stress stimulation, which makes them more likely to cause gastric ulcers and diarrhea. Piglet diarrhea affects the digestion and absorption function, leads to insufficient nutrition intake of pigs, slows down the growth rate, and prolongs the breeding cycle. If piglet diarrhea is not treated in time, it will not only affect their growth and development, but also increase the mortality rate and reduce the breeding efficiency. Therefore, it is crucial to explore effective prevention and control measures to reduce the probability of piglet diarrhea and ensure the healthy and strong growth of piglets.

[0004] The particle size of feed raw materials after ultrafine grinding is reduced, and the specific surface area of ​​the particles is increased, thereby increasing the contact probability between feed and digestive enzymes, promoting the digestion and absorption of nutrients, improving the utilization efficiency of feed, and improving production performance. Studies in the prior art have shown that the particle size of corn is reduced, the gelatinization degree increases, and the hardness increases. In feed processing, the particle size of the raw material has a decisive influence on the hardness of the particles. The finer the particle size of the raw material, the easier it is for the starch to gelatinize, the stronger the bonding effect, and the greater the particle hardness. In addition, the hardness of the pellets is affected by many factors, such as production process parameters, the physical and chemical properties of the raw materials, the variety and compatibility of the raw materials, etc.

[0005] Therefore, how to use ultrafine corn to mix with appropriate raw materials, adopt specific technology to balance the fineness of corn and the gelatinization and hardness of the prepared feed, and how to give full play to the technical advantages of ultrafine corn in feeding weaned piglets while reducing its negative impact have become urgent problems to be solved in the practical application of piglet feed. Summary of the invention

[0006] In view of the technical problem in the prior art that ultrafine ground corn in a low-protein diet causes insufficient protein supply to piglets, resulting in reduced growth performance, the present invention aims to provide a feed suitable for weaned piglets and its application, which can achieve a reasonable supply of essential amino acids and non-essential amino acids through reasonable proportioning, effectively balance the amino acid balance in a low-protein diet mode and meet the growth needs of piglets, improve growth performance, produce a compensatory effect on the growth performance of piglets, effectively give play to the technical advantages of low-protein diet feeding, avoid waste of protein resources, and improve the economic benefits of breeding.

[0007] To achieve this technical purpose, the present invention adopts the following technical solutions:

[0008] The present invention provides a feed suitable for weaned piglets, wherein the piglet feed containing ultrafinely crushed corn is obtained by the following steps:

[0009] (1) all raw materials are weighed according to a proportion and classified into solid raw materials, liquid raw materials, and powdered raw materials according to the raw material form;

[0010] (2) The solid raw material obtained in step (1) is placed in a pulverizer for pulverization, and the sieve aperture is 1.0 mm;

[0011] (3) placing the liquid raw material and powdered raw material obtained in step (1) and the solid raw material crushed in step (2) into a mixer and mixing them;

[0012] (4) placing the uniformly mixed raw materials obtained in step (3) into a granulator and adjusting the granulation temperature to 60-70° C., the ring die compression ratio to 1:3, and the granule diameter to 3 mm;

[0013] (5) cooling the pellet feed prepared in step (4) to room temperature, testing the gelatinization degree and hardness, and packaging and storing the pellet feed after meeting the standards;

[0014] The solid raw materials include: 10177-14177 parts of corn, 14000-16000 parts of broken rice, 8000-8800 parts of puffed soybeans, 3800-4000 parts of soybean meal, and 3500-4500 parts of wheat bran;

[0015] The liquid raw material is: 950-1050 parts of soybean oil;

[0016] The powdery materials are selected from: 3500-4500 parts of flour, 9000-11000 parts of soybean enzymatic protein HP300, 10000-140000 parts of high protein whey powder, 7000-9000 parts of low protein whey powder, 1500-2500 parts of Saixuejiang, 5500-6500 parts of sucrose, 1500-2500 parts of glucose, 1500-2500 parts of Leyule, 1900-1900 parts of coconut oil fat powder. 2100 parts, sodium glutamate 950-1050 parts, calcium dihydrogen phosphate 470-570 parts, calcium citrate 810-910 parts, fat acid 180-220 parts, lysine 609-709 parts, benzoic acid 250-350 parts, methionine 284-324 parts, threonine 305-385 parts, tryptophan 106-146 parts, valine 204-304 parts, isoleucine 120-140 parts, enveloped VC 25-35 parts, additive sodium chloride 500-600 parts, antioxidant 35-45 parts, sweetener 20-30 parts, flavoring agent 25-35 parts, sustained-release microporous zinc oxide 150-250 parts, choline chloride 80-120 parts, TK4306 100-200 parts, 5610VZ 950-1050 parts.

[0017] Preferably, the solid raw materials include: 12177 parts of corn, 15000 parts of broken rice, 8400 parts of puffed soybeans, 3900 parts of soybean meal, and 4000 parts of wheat bran;

[0018] Preferably, the liquid raw material is: 1000 parts of soybean oil;

[0019] Preferably, the powdery material is selected from: 4000 parts of flour, 10000 parts of soybean enzymatic protein HP300, 12000 parts of high protein whey powder, 8000 parts of low protein whey powder, 2000 parts of Saixuejiang, 6000 parts of sucrose, 2000 parts of glucose, 2000 parts of Leyu Le, 2000 parts of coconut oil fat, 1000 parts of sodium glutamate, 520 parts of monocalcium phosphate, 860 parts of calcium citrate, 200 parts of calciferol, 659 parts of lysine, 300 parts of benzoic acid, 304 parts of methionine, 345 parts of threonine, 126 parts of tryptophan, 254 parts of valine, 130 parts of isoleucine, and coated VC 30 parts, additive sodium chloride 550 parts, antioxidant 40 parts, sweetener 25 parts, flavoring agent 30 parts, sustained-release microporous zinc oxide 200 parts, choline chloride 100 parts, TK4306150 parts, 5610VZ 1000 parts.

[0020] Preferably, the degree of gelatinization in step (5) is set at 50%-80%.

[0021] Preferably, the hardness set in step (5) is 20-35N.

[0022] Preferably, the degree of gelatinization in step (5) is set at 60%-70%.

[0023] Preferably, the hardness set in step (5) is 20-30N.

[0024] Preferably, the crude protein content of the raw material is ≥ 46%.

[0025] Preferably, the lysine in the raw material is basically required to have a purity of ≥ 98%

[0026] Furthermore, the present application also provides the use of the feed suitable for weaned piglets in reducing piglet diarrhea.

[0027] By implementing the technical solution of the present invention, the following beneficial effects can be achieved:

[0028] 1. The feed suitable for weaned piglets and its application provided by the present application can effectively solve the technical problem that the gelatinization degree and hardness of the existing ultrafine grinding feed cannot be well coordinated, resulting in diarrhea caused by stress in weaned piglets, by adopting a specific processing technology combined with a specific raw material ratio to prepare a piglet feed containing ultrafine grinding corn, construct a unique puffed feed diet system, effectively improve the diarrhea of ​​weaned piglets, promote the digestion and absorption of nutrients in piglets, improve the utilization efficiency of feed, improve the survival rate and growth performance of piglets, and indirectly promote the overall health management and economic benefits of the farm.

[0029] 2. Through the application of a feed suitable for weaned piglets and its application provided by the present application, a feeding test was conducted to measure relevant indicators. The results showed that the daily feed intake of the control group was 206.41 g / d, the daily feed intake of the test group 1 was 233.75 g / d, the daily feed intake of the test group 2 was 409.93 g / d, and the daily feed intake of the test group 3 was 461.45 g / d. Compared with the control group, the feed intake of the test groups 2 and 3 was significantly increased; the daily weight gain of the control group was 180.21 g / d, the daily weight gain of the test group 1 was 218.14 g / d, and the daily weight gain of the test group 2 was 461.45 g / d. The daily weight gain was 297.84g / d, and the daily weight gain of the experimental group 3 was 461.45g / d. Compared with the control group, the daily food intake of the experimental groups 2 and 3 was significantly increased; the feed-to-meat ratio of the control group was 1.23, the feed-to-meat ratio of the experimental group 1 was 1.07, the feed-to-meat ratio of the experimental group 2 was 1.38, and the feed-to-meat ratio of the experimental group 3 was 1.28. Compared with the control group, the feed-to-meat ratio of the experimental groups 2 and 3 was improved; the diarrhea rate of the control group was 8.06%, the diarrhea rate of the experimental group 1 was 6.94%, the diarrhea rate of the experimental group 2 was 2.17%, and the diarrhea rate of the experimental group 3 was 3.22%. The diarrhea rate index of the experimental group 2 decreased significantly. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] none DETAILED DESCRIPTION

[0031] The technical solution of the present invention is clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the present embodiment, soybean enzymatic protein HP300 was purchased from Hamlet, Denmark, and produced by the company; low-protein whey powder was purchased from Tianjin Zhongjian Jiayi Technology Co., Ltd. and produced by Plante, USA; high-protein whey powder was purchased from Shanghai Hehong Trading Co., Ltd. and produced by WHEYPOWDER, Belarus; "Le Yu Le" was purchased from Chengdu Youertai Biotechnology Co., Ltd. and produced by Cargill; coconut oil powder was purchased from Hunan Zhonglian Biotechnology Co., Ltd. and produced by Zhonglian Biotechnology Co., Ltd.; speed energy milk fat was purchased from Hunan Zhonglian Biotechnology Co., Ltd. and produced by Zhonglian Biotechnology Co., Ltd.; soybean oil was purchased from Xinjiang Hezhong Trading Co., Ltd. and produced by Jinhai Grain and Oil Company; sodium glutamate was purchased from Urumqi Xinhong Xinda Industrial Co., Ltd. and produced by Meihuahua Biotechnology Group Co., Ltd.; benzoic acid was purchased from Hunan Hongrun Chemical Technology Co., Ltd. and produced by Hunan Hongrun Chemical Technology Co., Ltd.; fat 50 (benzoic acid Acid) was purchased from Guangzhou Yingsite Biotechnology Co., Ltd. and produced by the company; coated VC was purchased from Linyi Fulewei Biotechnology Co., Ltd. and produced by Sangpu Biochemical Co., Ltd. Antioxidants were purchased from Zhengzhou Pujikang Trading Co., Ltd. and produced by American Kemin Industries. Sweeteners, flavoring agents, and porcine intestinal acid were purchased from Chengdu Dadi Hank Biotechnology Co., Ltd. and produced by the company; sustained-release microporous zinc oxide was purchased from Beijing Fantishite Technology Co., Ltd. and produced by the company; choline chloride was purchased from Huanghua Bijia Biological Products Co., Ltd. and produced by the company; "TK4306" was purchased from Xi'an Xinglang Biotechnology Co., Ltd. and produced by Changsha Xingjia Bioengineering Co., Ltd. 5610VZ was purchased from Tiankang Biological Co., Ltd. and produced by the company; emulsifiers were purchased from Suzhou Nordo Biotechnology Co., Ltd. and produced by the company; "Saixuejiang" was purchased from Xi'an Pulekang Co., Ltd. and produced by Kokdala Angel Yeast Co., Ltd.

[0033] Unless otherwise specified in the following examples, the technical means used are conventional means well known to those skilled in the art.

[0034] Embodiment 1: A feed suitable for weaned piglets

[0035] The present invention provides a feed suitable for weaned piglets, wherein the piglet feed containing ultrafinely crushed corn is obtained by the following steps:

[0036] (1) all raw materials are weighed according to a proportion and classified into solid raw materials, liquid raw materials, and powdered raw materials according to the raw material form;

[0037] (2) The solid raw material obtained in step (1) is placed in a pulverizer for pulverization, and the sieve aperture is 1.0 mm;

[0038] (3) placing the liquid raw material and powdered raw material obtained in step (1) and the solid raw material crushed in step (2) into a mixer and mixing them;

[0039] (4) placing the uniformly mixed raw materials obtained in step (3) into a granulator and adjusting the granulation temperature to 60-70° C., the ring die compression ratio to 1:3, and the granule diameter to 3 mm;

[0040] (5) cooling the pellet feed prepared in step (4) to room temperature, testing the gelatinization degree and hardness, and packaging and storing the pellet feed after meeting the standards;

[0041] The solid raw materials include: 10177-14177 parts of corn, 14000-16000 parts of broken rice, 8000-8800 parts of puffed soybeans, 3800-4000 parts of soybean meal, and 3500-4500 parts of wheat bran;

[0042] The liquid raw material is: 950-1050 parts of soybean oil;

[0043] The powdery materials are selected from: 3500-4500 parts of flour, 9000-11000 parts of soybean enzymatic protein HP300, 10000-140000 parts of high protein whey powder, 7000-9000 parts of low protein whey powder, 1500-2500 parts of Saixuejiang, 5500-6500 parts of sucrose, 1500-2500 parts of glucose, 1500-2500 parts of Leyule, 1900-1900 parts of coconut oil fat powder. 2100 parts, sodium glutamate 950-1050 parts, calcium dihydrogen phosphate 470-570 parts, calcium citrate 810-910 parts, fat acid 180-220 parts, lysine 609-709 parts, benzoic acid 250-350 parts, methionine 284-324 parts, threonine 305-385 parts, tryptophan 106-146 parts, valine 204-304 parts, isoleucine 120-140 parts, enveloped VC 25-35 parts, additive sodium chloride 500-600 parts, antioxidant 35-45 parts, sweetener 20-30 parts, flavoring agent 25-35 parts, sustained-release microporous zinc oxide 150-250 parts, choline chloride 80-120 parts, TK4306 100-200 parts, 5610VZ 950-1050 parts.

[0044] The gelatinization degree set in the step (5) is 50%-80%.

[0045] The hardness set in the step (5) is 20-35N.

[0046] The crude protein content of the raw material is ≥46%.

[0047] The basic requirement for the lysine in the raw material is a purity of ≥ 98%

[0048] Example 2: A feed suitable for weaned piglets

[0049] The ingredients include 10177kg corn, 14000kg broken rice, 8000kg puffed soybean, 3800kg soybean meal, 3500kg wheat bran, 950kg soybean oil, 3500kg flour, 3009000kg soybean enzymatic protein HP300, 10000kg high protein whey powder, 7000kg low protein whey powder, 1500kg Saixuejiang, 5500kg sucrose, 1500kg glucose, 1500kg Leyu Le, 600kg lysine, 1900kg coconut oil fat powder, 950kg sodium glutamate, 470kg monocalcium phosphate, 810kg calcium citrate, 180kg calciferol, 609kg lysine, 250kg benzoic acid, 284kg methionine, 305kg threonine, 106kg tryptophan, 204kg valine, 120kg isoleucine, and coated VC. 25kg, additive sodium chloride 500kg, antioxidant 35kg, sweetener 20kg, flavoring agent 25kg, sustained-release microporous zinc oxide 150kg, choline chloride 80kg, TK4306 100kg, 5610VZ 950kg. The crude protein in the raw materials is ≥46%; the basic requirement for the purity of lysine in the raw materials is ≥98%

[0050] All raw materials are weighed in proportion, and divided into solid raw materials, liquid raw materials and powdered raw materials according to the form of raw materials; the obtained solid raw materials are put into a grinder for crushing and the aperture of the crushing screen is 1.0mm; the obtained liquid raw materials, powdered raw materials and crushed solid raw materials are put into a mixer for mixing; the obtained mixed raw materials are put into a granulator and the granulation temperature is adjusted to 60-70℃, the ring die compression ratio is 1:3, and the particle diameter is 3mm; the prepared granular feed is cooled to room temperature and then the gelatinization degree and hardness are tested, and they are packaged and stored after meeting the standards; the set gelatinization degree is 50%-60%; the set hardness is 20-25N.

[0051] Example 3: A feed suitable for weaned piglets

[0052] The materials used are: 12177kg corn, 15000kg broken rice, 8400kg puffed soybean, 3900kg soybean meal, 4000kg wheat bran, 1000kg soybean oil, 4000kg flour, 10000kg soybean enzymatic protein HP300, 12000kg high protein whey, 8000kg low protein whey, 2000kg Saixuejiang, 6000kg sucrose, 2000kg glucose, 2000kg Leyu Le, 700kg lysine, 2000kg coconut oil fat, 1000kg sodium glutamate, 520kg monocalcium phosphate, 860kg calcium citrate, 200kg calciferol, 659kg lysine, 300kg benzoic acid, 304kg methionine, 345kg threonine, 126kg tryptophan, 254kg valine, 130kg isoleucine, and coated VC. 30kg, additive sodium chloride 550kg, antioxidant 40kg, sweetener 25kg, flavoring agent 30kg, sustained-release microporous zinc oxide 200kg, choline chloride 100kg, TK4306 150kg, 5610VZ 1000kg. The crude protein in the raw materials is ≥46%; the basic requirement for the purity of lysine in the raw materials is ≥98%.

[0053] All raw materials are weighed in proportion, and divided into solid raw materials, liquid raw materials and powdered raw materials according to the form of raw materials; the obtained solid raw materials are put into a grinder for crushing and the sieve aperture is 1.0mm; the obtained liquid raw materials, powdered raw materials and crushed solid raw materials are put into a mixer for mixing; the obtained mixed raw materials are put into a granulator and the granulation temperature is adjusted to 60-70℃, the ring die compression ratio is 1:3, and the particle diameter is 3mm; the prepared pellet feed is cooled to room temperature and then the gelatinization degree and hardness are tested, and they are packaged and stored after meeting the standards; the set gelatinization degree is 60%-70%; the set hardness is 20-30N.

[0054] Example 4: A feed suitable for weaned piglets

[0055] The ingredients include 14177kg corn, 16000kg broken rice, 8800kg puffed soybean, 4000kg soybean meal, 4500kg wheat bran, 1050kg soybean oil, 4500kg flour, 11000kg soybean enzymatic protein HP300, 140000kg high protein whey powder, 9000kg low protein whey powder, 2500kg Saixuejiang, 6500kg sucrose, 2500kg glucose, 2500kg Leyu Le, 800kg lysine, 2100kg coconut oil fat powder, 1050kg sodium glutamate, 570kg monocalcium phosphate, 910kg calcium citrate, 220kg calciferol, 709kg lysine, 350kg benzoic acid, 324kg methionine, 385kg threonine, 146kg tryptophan, 304kg valine, 140kg isoleucine, and coated VC. 35kg, additive sodium chloride 600kg, antioxidant 45kg, sweetener 30kg, flavoring agent 35kg, sustained-release microporous zinc oxide 250kg, choline chloride 120kg, TK4306200kg, 5610VZ 1050kg. The crude protein in the raw materials is ≥46%; the basic requirement for the purity of lysine in the raw materials is ≥98%.

[0056] All raw materials are weighed in proportion, and divided into solid raw materials, liquid raw materials and powdered raw materials according to the form of raw materials; the obtained solid raw materials are put into a grinder for crushing and the sieve aperture is 1.0mm; the obtained liquid raw materials, powdered raw materials and crushed solid raw materials are put into a mixer for mixing; the obtained mixed raw materials are put into a granulator and the granulation temperature is adjusted to 60-70℃, the ring die compression ratio is 1:3, and the particle diameter is 3mm; the prepared pellet feed is cooled to room temperature and then the gelatinization degree and hardness are tested, and they are packaged and stored after meeting the standards; the gelatinization degree is set to 70%-80%; the hardness is set to 25-35N.

[0057] Example 5: Feeding effect comparison

[0058] Based on the records in the above-mentioned Examples 2 to 4, the feeding effects of the piglet feeds containing ultrafine ground corn provided in this application were compared, as shown below:

[0059] 1. Experimental groups and diets

[0060] 1. Experimental Animals

[0061] The technical solution in Example 2 was used as the test group, and the technical solution in Example 3 was used, wherein the aperture of the crushing screen was 2 mm as the control group. In this experiment, 318 piglets weighing about 8.4 kg were selected and divided into 2 treatments, each with three replicates, each with 50-55 piglets, namely the control group N1, whose gelatinization degree was 40-50 and hardness was 15-20, and the treatment group N2, whose feed gelatinization degree was 50-60 and feed hardness was 18-25.

[0062] The specific treatment conditions of each group are shown in Table 1:

[0063] Table 1: Group processing status table

[0064] project 9501N1 9501N2 Crushing screen aperture (mm) 2.0 1.0 Granulation temperature (℃) 60-70 60-70 Ring die compression ratio 1:3 1:3 Particle diameter (mm) 3 3 Gelatinization degree (%) 40-50 50-60 hardness 15-20 18-25

[0065] 2. Test methods

[0066] (1) Measurement indicators and evaluation methods

[0067] ①Diarrhea record

[0068] Observe the diarrhea of ​​piglets. Observation method: observe whether there is watery feces in the fecal duct of the experimental pen, and observe and record the pollution near the piglet's anus and the pig's mental state. Record the total number of piglets with diarrhea per day in each pen and calculate the diarrhea frequency. The diarrhea rate = the total number of piglets in each group with diarrhea on the first day / (number of piglets × number of experimental days) × 100%. Observe the differences in feces among the groups and take photos for comparison.

[0069] Table 2: Diarrhea scoring criteria

[0070] Severity of diarrhea Appearance score normal Dry, shaped or granulated 0 Mild Soft stool, can be formed 1 Moderate Thick, shapeless, no separation of feces and water 2 serious Liquid, no shape, feces and water are separated 3

[0071] Note: 1. Observe the piglet feces once in the morning and once in the afternoon every day.

[0072] 2.2 points (including 2 points) or above is considered diarrhea

[0073] 3. Use the highest score as the diarrhea score for the pig on that day. Carefully determine whether the diarrhea is in the same piglet. Do not record it repeatedly.

[0074] ②Growth performance

[0075] Weigh the initial weight, final weight, and weight of dead pigs one by one. When weighing the initial weight and final weight, pay attention to the empty feed trough. Weigh the initial weight and final weight when there is no feed in the feed trough of the experimental pig group. (After feeding each stage, weighing is required to enter the next stage of the test)

[0076] ADG / (g / d) Daily weight gain = (final weight - initial weight) ÷ number of days

[0077] Record the feeding amount of each group every day, weigh them, record the feed intake of the day, and fix the time point. Add feed when the feed in each pen is about to be eaten, which is conducive to the statistical difference in feed intake.

[0078] ADFI / (g / d) feed intake = total feed intake ÷ number of days ÷ sample size

[0079] F / G feed to meat ratio = ADFI ÷ ADG

[0080] 3. Test results

[0081] The feeding test was conducted in four groups, and the feeding effect of the piglet feed containing ultrafine milled corn prepared by the technical solution provided in this application was compared and analyzed by measuring the initial average weight, final average weight, daily feed intake, daily weight gain, feed-to-meat ratio, and diarrhea rate. The measurement results are shown in Table 3.

[0082] Table 2: Comparison of feeding effects

[0083]

[0084]

[0085] Note: Data in the same industry marked with the same letter or without a letter indicate no significant difference. Different lowercase letters indicate significant difference.

[0086] The results of measuring daily feed intake data showed that the daily feed intake of the control group was 367.6g / d, and the daily feed intake of the experimental group was 375.6g / d. Compared with the control group, the feed intake of the experimental group was increased.

[0087] The results of measuring daily weight gain data showed that the daily weight gain of the control group was 296.2g / d, and the daily weight gain of the experimental group 1 was 310.3g / d. Compared with the control group, the food intake of the experimental group was improved.

[0088] The results of measuring the feed-to-meat ratio data showed that the feed-to-meat ratio of the control group was 1.324, and that of the experimental group was 1.330. Compared with the control group, the feed-to-meat ratio of the experimental group was improved.

[0089] The results of measuring the diarrhea rate of piglets showed that the diarrhea rate of the control group was 0.92%, and the diarrhea rate of the experimental group was 0.70%. The diarrhea rate index of the experimental group decreased.

[0090] Example 6: Feeding effect comparison

[0091] Based on the records in the above-mentioned Examples 2 to 4, the feeding effects of the piglet feeds containing ultrafine ground corn provided in this application were compared, as shown below:

[0092] 1. Experimental groups and diets

[0093] 1. Experimental Animals

[0094] The technical scheme in Example 3 was used as the test group, and the technical scheme in Example 3 was used, wherein the aperture of the crushing screen was 2mm as the control group. 300 healthy weaned piglets weighing about 7kg were selected and divided into 2 groups, with 4 replicates in each group and 40 or 30 pigs in each replicate. The average weight difference was required to be less than 0.05kg, and the difference was not significant (P>0.05). They were respectively the control group N1, whose gelatinization degree was 50-60 and the hardness was 18-25, and the treatment group N2, whose feed gelatinization degree was 60-70 and the feed hardness was 20-30.

[0095] The specific treatment conditions of each group are shown in Table 3:

[0096] Table 3: Group processing status table

[0097] project 9501N1 9501N2 Crushing screen aperture (mm) 2.0 1.0 Granulation temperature (℃) 60-70 60-70 Ring die compression ratio 1:3 1:3 Particle diameter (mm) 3 3 Gelatinization degree (%) 50-60 60-70 hardness 18-25 20-30

[0098] 2. Test methods

[0099] The diarrhea determination record and growth performance were the same as those in Example 5.

[0100] 3. Test results

[0101] The feeding test was conducted by dividing four groups, and the feeding effect of the piglet feed containing ultrafine milled corn prepared by the technical solution provided in this application was compared and analyzed by measuring the initial average weight, final average weight, daily feed intake, daily weight gain, feed-to-meat ratio, and diarrhea rate. The measurement results are shown in Table 4.

[0102] Table 4: Comparison of feeding effects

[0103]

[0104]

[0105] Note: Data in the same industry marked with the same letter or without a letter indicate no significant difference. Different lowercase letters indicate significant difference.

[0106] The results of measuring daily feed intake data showed that the daily feed intake of the control group was 206.41g / d, and the daily feed intake of the experimental group was 233.75g / d. Compared with the control group, the feed intake of the experimental group was significantly increased.

[0107] The results of measuring daily weight gain data showed that the daily weight gain of the control group was 180.21g / d, and the daily weight gain of the experimental group 1 was 219.14g / d. Compared with the control group, the food intake of the experimental group was improved.

[0108] The results of measuring the diarrhea rate of piglets showed that the diarrhea rate in the control group was 8.06%, and the diarrhea rate in the experimental group was 6.94%. The diarrhea rate index of the experimental group decreased significantly.

[0109] Example 7: Feeding effect comparison

[0110] Based on the records in the above-mentioned Examples 2 to 4, the feeding effects of the piglet feeds containing ultrafine ground corn provided in this application were compared, as shown below:

[0111] 1. Experimental groups and diets

[0112] 1. Experimental Animals

[0113] The technical scheme in Example 4 was used as the test group, and the technical scheme in Example 3 was used, wherein the aperture of the crushed sieve was 2mm as the control group. 240 weaned piglets weighing 7.0kg (±0.5) were selected and randomly divided into 2 groups according to gender and weight, with 4 replicates in each group and 30 piglets in each replicate. The piglets can be reasonably grouped according to the actual transfer situation of the pig farm; the difference in average weight between groups is required to be less than 0.1kg, the standard deviation of weight of each group is less than 0.5, and the difference in initial average weight between groups is not significant (P>0.05). They are respectively the control group N1, whose gelatinization degree is 60-70, hardness is 20-30, and the treatment group N2, whose feed gelatinization degree is 70-80 and feed hardness is 25-35.

[0114] The specific treatment conditions of each group are shown in Table 5:

[0115] Table 5: Group processing status table

[0116] project 9501N1 9501N2 Crushing screen aperture (mm) 2.0 1.0 Granulation temperature (℃) 60-70 60-70 Ring die compression ratio 1:3 1:3 Particle diameter (mm) 3 3 Gelatinization degree (%) 60-70 70-80 hardness 20-30 25-35

[0117] 2. Test methods

[0118] The diarrhea determination record and growth performance were the same as those in Example 5.

[0119] 3. Test results

[0120] The feeding test was conducted by dividing four groups, and the feeding effect of the piglet feed containing ultrafine ground corn prepared by the technical solution provided in this application was compared and analyzed by measuring the initial average weight, final average weight, daily feed intake, daily weight gain, feed-to-meat ratio, and diarrhea rate. The measurement results are shown in Table 6.

[0121] Table 4: Comparison of feeding effects

[0122]

[0123]

[0124] Note: Data in the same industry marked with the same letter or without a letter indicate no significant difference. Different lowercase letters indicate significant difference.

[0125] The results of measuring daily feed intake data showed that the daily feed intake of the control group was 461.45g / d, and the daily feed intake of the experimental group was 409.93g / d. Compared with the control group, the feed intake of the experimental group was significantly increased.

[0126] The results of measuring daily weight gain data showed that the daily weight gain of the control group was 361.16g / d, and the daily weight gain of the experimental group was 297.84g / d. Compared with the control group, the daily food intake of the experimental group was significantly increased.

[0127] The results of measuring the feed-to-meat ratio data showed that the feed-to-meat ratio of the control group was 1.28, and that of the experimental group was 1.38. Compared with the control group, the feed-to-meat ratio of the experimental group was improved.

[0128] The results of measuring the diarrhea rate of piglets showed that the diarrhea rate of the control group was 3.22%, and the diarrhea rate of the experimental group was 2.17%. The diarrhea rate index of the experimental group decreased significantly.

[0129] Through comprehensive evaluation, the daily feed intake, daily weight gain, feed-to-meat ratio, diarrhea rate and other related indicators, the feeding effect of the technical solution provided in this application is better than that of the control group. Among them, considering the overall evaluation, the technical solution provided in Example 3 has the best feeding effect.

[0130] It can be seen that the piglet feed containing ultrafine ground corn provided by the present application has a good feeding effect. By adopting a specific raw material ratio and combining a specific processing technology, the technical bottleneck that the gelatinization degree of the ultrafine ground feed and the feed hardness level cannot meet the feeding needs of piglets after weaning are comprehensively solved. On the premise of taking into account the good gelatinization degree to meet the excellent palatability of the feed, the technical problem of piglet diarrhea caused by hard feed is effectively alleviated, the digestion and absorption of nutrients in piglets is promoted, the utilization efficiency of feed is improved, the survival rate and growth performance of piglets are improved, and the overall health management and economic benefits of the farm are indirectly promoted.

[0131] The above implementation modes are only for illustrating the technical concept and features of the present invention in a specific scenario. The purpose is to enable people who need this technology to understand the content of the present invention and implement it. It does not limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A feed suitable for weaned piglets, characterized in that: The piglet feed containing ultrafine crushed corn is obtained by the following steps: (1) all raw materials are weighed according to a proportion and classified into solid raw materials, liquid raw materials, and powdered raw materials according to the raw material form; (2) The solid raw material obtained in step (1) is placed in a pulverizer for pulverization, and the sieve aperture is 1.0 mm; (3) placing the liquid raw material and powdered raw material obtained in step (1) and the solid raw material crushed in step (2) into a mixer and mixing them; (4) placing the uniformly mixed raw materials obtained in step (3) into a granulator and adjusting the granulation temperature to 60-70° C., the ring die compression ratio to 1:3, and the granule diameter to 3 mm; (5) cooling the pellet feed prepared in step (4) to room temperature, testing the gelatinization degree and hardness, and packaging and storing the pellet feed after meeting the standards; The solid raw materials include: 10177-14177 parts of corn, 14000-16000 parts of broken rice, 8000-8800 parts of puffed soybeans, 3800-4000 parts of soybean meal, and 3500-4500 parts of wheat bran; The liquid raw material is: 950-1050 parts of soybean oil; The powdery materials are selected from: 3500-4500 parts of flour, 9000-11000 parts of soybean enzymatic protein HP300, 10000-140000 parts of high protein whey powder, 7000-9000 parts of low protein whey powder, 1500-2500 parts of Saixuejiang, 5500-6500 parts of sucrose, 1500-2500 parts of glucose, 1500-2500 parts of Leyule, 1900-1900 parts of coconut oil fat powder. 2100 parts, sodium glutamate 950-1050 parts, calcium dihydrogen phosphate 470-570 parts, calcium citrate 810-910 parts, fat acid 180-220 parts, lysine 609-709 parts, benzoic acid 250-350 parts, methionine 284-324 parts, threonine 305-385 parts, tryptophan 106-146 parts, valine 204-304 parts, isoleucine 120-140 parts, enveloped VC 25-35 parts, additive sodium chloride 500-600 parts, antioxidant 35-45 parts, sweetener 20-30 parts, flavoring agent 25-35 parts, sustained-release microporous zinc oxide 150-250 parts, choline chloride 80-120 parts, TK4306 100-200 parts, 5610VZ 950-1050 parts.

2. A feed suitable for weaned piglets as claimed in claim 1, characterized in that: The solid raw materials include: 12177 parts of corn, 15000 parts of broken rice, 8400 parts of puffed soybeans, 3900 parts of soybean meal, and 4000 parts of wheat bran; The liquid raw material includes: 1000 parts of soybean oil; the powdery material includes: 4000 parts of flour, 10000 parts of soybean enzymatic protein HP300, 12000 parts of high-protein whey powder, 8000 parts of low-protein whey powder, 2000 parts of Saixuejiang, 6000 parts of sucrose, 2000 parts of glucose, 2000 parts of Leyu Le, 2000 parts of coconut oil fat, 1000 parts of sodium glutamate, 520 parts of monocalcium phosphate, 860 parts of calcium citrate, 200 parts of calciferol, 659 parts of lysine, 300 parts of benzoic acid, 304 parts of methionine, 345 parts of threonine, 126 parts of tryptophan, 254 parts of valine, 130 parts of isoleucine, and coated VC. 30 parts, additive sodium chloride 550 parts, antioxidant 40 parts, sweetener 25 parts, flavoring agent 30 parts, sustained-release microporous zinc oxide 200 parts, choline chloride 100 parts, TK4306 150 parts, 5610VZ 1000 parts.

3. A feed suitable for weaned piglets as claimed in claim 1, characterized in that: The gelatinization degree set in the step (5) is 50%-80%.

4. A feed suitable for weaned piglets as claimed in claim 1, characterized in that: The hardness set in the step (5) is 20-35N.

5. A feed suitable for weaned piglets as claimed in claim 1, characterized in that: The gelatinization degree set in the step (5) is 60%-70%.

6. A feed suitable for weaned piglets as claimed in claim 1, characterized in that: The hardness set in the step (5) is 20-30N.

7. A feed suitable for weaned piglets as claimed in claim 1, characterized in that: The crude protein content of the raw material is ≥46%.

8. A feed suitable for weaned piglets as claimed in claim 1, characterized in that: The basic requirement for the lysine in the raw material is a purity of ≥ 98% 9. Use of the feed suitable for weaned piglets according to any one of claims 1 to 8 in preparing feed for reducing diarrhea in piglets.

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