Ballast-added granular feed for broiler chicken breeding and preparation method of ballast-added granular feed

Abstract

The invention is suitable for the technical field of feed, and provides a ballast-added granular feed for broiler chicken breeding and a preparation method thereof, the ballast-added granular feed for broiler chicken breeding is formed by mixing a corn ballast component and a granular feed basic component according to the ratio of (15-30): (70-85), 99% of the corn ballast needs to pass through a 5-8mm woven sieve, and 1.0-3.0 mm undersize is less than or equal to 10%. Compared with a full pellet feed, the feed can improve the survival rate and the slaughtering average weight, reduce the feed conversion ratio, increase the gizzard weight and improve the European index; appropriate particle sizes and proportions are set for different growth stages, effect reduction is avoided, muscular stomach functions can be enhanced, intestinal health is promoted, the absorption capacity is improved, the death and culling rate is reduced, active ingredients of corn are reserved, benefits are improved through later-stage compensation growth, and the problems of too fast growth, many digestive tract diseases, high later-stage death rate and the like caused by full pellet feed are solved.

Description

Technical Field

[0001] This application belongs to the field of feed technology, and in particular relates to a granulated feed for broiler chicken farming and its preparation method. Background Technology

[0002] In the modern broiler farming industry, feed form has a crucial impact on the growth performance and health of broilers. Currently, the industry widely uses pelleted feed to feed broilers. While pelleted feed has the advantages of rapid and high feed intake, which can accelerate the growth rate of broilers to some extent, it also brings a series of problems that urgently need to be solved.

[0003] The high feed intake efficiency of pelleted feed can lead to excessively rapid growth in broilers, resulting in incomplete bone development and an increased risk of sudden death. Furthermore, an excessively rapid growth rate can overburden the broilers' digestive tract, causing digestive dysfunction and health problems, significantly increasing the incidence of diseases such as ascites. Especially in the later stages of rearing, broiler mortality rates rise sharply, severely impacting the economic benefits of poultry farming.

[0004] In existing technologies, solutions to the above problems mostly focus on reducing feed nutrient concentration or restricting broiler feed intake. However, reducing nutrient concentration directly affects the physiological growth function of the entire broiler flock, leading to insufficient intake of nutrients required for broiler growth and development; restricting feed intake violates the normal growth pattern of broilers and will also have an adverse effect on broiler growth. Moreover, neither of these methods can fundamentally solve the negative impact of pelleted feed on the digestive health and growth rhythm of broilers, making it difficult to meet the needs of the broiler farming industry for efficient and healthy farming models.

[0005] Therefore, developing a new type of feed that can not only ensure the nutrition required for the normal growth of broilers, but also improve the digestive health of broilers, reduce the incidence of diseases, and increase breeding efficiency has become an important research direction in the field of broiler feed technology. Summary of the Invention

[0006] The purpose of this application is to provide a pelleted feed for broiler farming, which aims to solve the problems of excessively rapid growth, numerous digestive tract diseases, and high mortality rates in broilers caused by pelleted feed in the prior art.

[0007] The embodiments of this application are implemented as follows: a corn grits-powdered feed for broiler chicken farming includes corn grits components and pelleted feed base components; the mixing mass ratio of the corn grits components to the pelleted feed base components is (15-30):(70-85);

[0008] The particle size of the corn grits component is such that 99% passes through a 5-8mm woven sieve, and the mass percentage of the material passing through a 1.0-3.0mm woven sieve is ≤10%.

[0009] Preferably, by weight percentage, the basic components of the pelleted feed consist of the following raw materials: 30-50% corn, 5-8% wheat flour, 2-3% cottonseed meal, 1-2% soybean oil, 3-9% chicken oil, 30-33% soybean meal, 3-5% corn gluten meal, 1-1.5% feather meal, 1-1.5% baking soda, 1-1.5% limestone powder, 0.9-1.0% dicalcium phosphate, 0.2-0.4% salt, 1.0% compound amino acids, 0.05% compound vitamins, 0.1% compound trace elements, 0.1% probiotics, 0.1% enzyme preparations, with the remainder being conventional feed additives.

[0010] Another objective of this application is to provide a method for preparing the above-mentioned broiler feed with added grains, comprising the following steps:

[0011] Step 1: Corn crushing process

[0012] A double-roll crusher is selected, employing extrusion, shearing, and tearing crushing methods to break corn into corn grits that meet the particle size requirements. During the crushing process, the crusher parameters are controlled to ensure that 99% of the corn grits pass through a 5-8mm woven screen, and the undersize material on a 1.0-3.0mm woven screen is ≤10%.

[0013] Step 2: Preparation of basic components for pelleted feed

[0014] Weigh the raw materials required for the basic components of pelleted feed, and perform mixing and pelleting operations;

[0015] The mixing operation parameters are as follows: mixing time 3 minutes, spindle speed 30-60 rpm, filling rate 60-80%, liquid addition ≤5%, and mixing uniformity target CV≤7%.

[0016] Step 3: Add the corn grits obtained in Step 1 and the pellet feed base components prepared in Step 2 into a mixing device at a mass ratio of (15-30):(70-85), mix them evenly again, and obtain the corn grits and pellet feed for broiler farming.

[0017] The broiler feed provided in this application, which mixes corn grits (crushed into specific particle sizes) with the basic components of pelleted feed in a specific ratio, can effectively improve the growth of broilers. Specifically, compared with whole pelleted feed, it can increase the survival rate and average weight at slaughter, reduce the feed conversion ratio, significantly increase gizzard weight, and improve the European index. At the same time, by setting appropriate corn grits particle size and proportion for different growth stages, it avoids the decline in feeding effect caused by improper particle size. It can enhance the gizzard grinding function of broilers, promote proventricular health and intestinal toughness, improve nutrient absorption capacity, and reduce mortality rate through corn grits, while retaining the active ingredients in corn. It can improve breeding efficiency by utilizing the compensatory growth characteristics of broilers in the later stages, fundamentally solving the problems of excessively rapid growth, more digestive tract diseases, and high mortality in the later stages caused by whole pelleted feed. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0019] This application addresses the problems of excessively rapid growth, numerous digestive diseases, and high mortality rates in broilers caused by pelleted feed in the prior art. It provides a corn grits-and-pellet feed for broiler farming. By mixing corn grits (crushed to a specific particle size) with the basic components of pelleted feed in a specific ratio, it effectively improves the growth of broilers. Specifically, compared to whole pelleted feed, it increases broiler survival rate, average slaughter weight, reduces feed conversion ratio, significantly increases gizzard weight, and improves the European index. Furthermore, by setting appropriate corn grits particle size and proportions for different growth stages, it avoids the decline in feeding effectiveness caused by improper particle size. The corn grits enhance the broiler's gizzard grinding function, promote proventricular health and intestinal resilience, improve nutrient absorption, and reduce mortality. It also retains the active ingredients in corn, utilizing the compensatory growth characteristics of broilers in the later stages to improve farming efficiency. This fundamentally solves the problems of excessively rapid growth, numerous digestive diseases, and high mortality rates in broilers caused by whole pelleted feed.

[0020] Specifically, the embodiment of this application provides a corn grits-powdered feed for broiler farming, comprising corn grits components and pelleted feed base components; the mixing mass ratio of the corn grits components to the pelleted feed base components is (15-30):(70-85);

[0021] The particle size of the corn grits component is such that 99% passes through a 5-8mm woven sieve, and the mass percentage of the material passing through a 1.0-3.0mm woven sieve is ≤10%.

[0022] Preferably, by weight percentage, the basic components of the pelleted feed consist of the following raw materials: 30-50% corn, 5-8% wheat flour, 2-3% cottonseed meal, 1-2% soybean oil, 3-9% chicken oil, 30-33% soybean meal, 3-5% corn gluten meal, 1-1.5% feather meal, 1-1.5% baking soda, 1-1.5% limestone powder, 0.9-1.0% dicalcium phosphate, 0.2-0.4% salt, 1.0% compound amino acids, 0.05% compound vitamins, 0.1% compound trace elements, 0.1% probiotics, 0.1% enzyme preparation, and the remainder being conventional feed additives (such as wheat bran, rice bran, etc., whose content and type have negligible impact on feed effectiveness).

[0023] In the specific embodiments of this application, the compound vitamins used are all composed of L-lysine, DL-methionine and L-threonine.

[0024] The complex vitamin consists of vitamin A, vitamin D3, vitamin E, vitamin K3, vitamin B1, vitamin B2, vitamin B6, and vitamin B6. 12 The compound vitamins are composed of nicotinamide, calcium pantothenate, folic acid, biotin, vitamin C, antioxidants, and rice husks. Preferably, unless otherwise specified, the compound vitamins used in the following specific embodiments of this application consist of the following raw materials in parts by weight: 80.00 parts of vitamin A (500,000 IU / g), 28.00 parts of vitamin D3 (500,000 IU / g), 150.00 parts of vitamin E (50%), 12.00 parts of vitamin K3 (96%), 11.11 parts of vitamin B1 (98%), 40.00 parts of vitamin B2 (80%), 20.00 parts of vitamin B6 (98%), and vitamin B... 12 (1%) 8.00 parts, nicotinamide (100%) 151.52 parts, calcium pantothenate (98%) 50.00 parts, folic acid (98%) 4.21 parts, biotin (2%) 25.00 parts, antioxidant (50%) 1.00 parts, rice husk 419.16 parts. Among these, the antioxidants should be common types used in the feed industry, as their addition amounts are small and their impact on overall feeding effectiveness is negligible.

[0025] The composite trace elements are composed of ferrous sulfate, copper sulfate, basic manganese chloride, basic zinc chloride, calcium iodate, sodium selenite, and stone powder. Preferably, unless otherwise specified, the composite trace elements used in the following specific embodiments of this application are composed of the following raw materials in parts by weight: 66 parts ferrous sulfate (30.0%), 64 parts copper sulfate (25.0%), 206 parts basic manganese chloride (58.0%), 206 parts basic zinc chloride (58.0%), 125 parts calcium iodate (1.0%), 30 parts sodium selenite (1.0%), and 303 parts stone powder.

[0026] The probiotics are a mixture of Bacillus licheniformis and Clostridium butyricum in a mass ratio of 9:1.

[0027] The enzyme preparation is a compound of xylanase, β-mannanase, and phytase in a mass ratio of 5:1:4. Preferably, unless otherwise specified, the enzyme preparation used in the following specific embodiments of this application is a compound of xylanase (5000 U / g), β-mannanase (50000 U / g), and phytase (5000 U / g) in a mass ratio of 5:1:4.

[0028] The particle size of the corn grits component varies depending on the growth stage of the broiler chickens.

[0029] For medium-sized chickens: 99% of the corn grits should pass through a 5mm woven sieve, and the mass percentage of the material passing through a 1.0mm woven sieve should be ≤10%. Furthermore, the mass percentage of corn grits in the grits-powdered feed should be 15-20%.

[0030] For adult chickens: 99% of the corn grits component passes through an 8mm woven sieve, and the mass percentage of the material passing through a 1.0mm woven sieve is ≤10%, and the mass percentage of the corn grits component in the grits-powdered feed is 30%.

[0031] In the following specific embodiments of this application, unless otherwise specified, the chick feed is ordinary pelleted feed; the mass ratio of corn grits in the feed for growing chickens is 15-20%; and the mass ratio of corn grits in the feed for adult chickens is 30%.

[0032] This application embodiment also provides a method for preparing the above-mentioned broiler feed with added grains, including the following steps:

[0033] Step 1: Corn crushing process

[0034] A double-roll crusher is selected, employing extrusion, shearing, and tearing crushing methods to break corn into corn grits that meet the particle size requirements. During the crushing process, the crusher parameters are controlled to ensure that 99% of the corn grits pass through a 5-8mm woven screen, and the undersize material on a 1.0-3.0mm woven screen is ≤10%.

[0035] Step 2: Preparation of basic components for pelleted feed

[0036] Weigh the raw materials required for the basic components of pelleted feed, and perform mixing and pelleting operations;

[0037] The mixing operation parameters are as follows: mixing time 3 minutes, spindle speed 30-60 rpm, filling rate 60-80%, liquid addition ≤5%, and mixing uniformity target CV≤7%.

[0038] Pelletizing parameters should be adjusted according to the broiler's growth stage:

[0039] Chick feed (0-12 days old): conditioning temperature 70-80℃, conditioning time 20-40 seconds, ring die compression ratio 1:(8-10), ring die aperture ø2.0-3.0mm, pressure roller-ring die gap 0.2-0.3mm, pellet mill current load ≤ 85% of rated current, moisture content after conditioning 15.5-16.5%, pellet extrusion temperature 75-85℃;

[0040] Medium-sized chicken feed (13-21 days old): conditioning temperature 75-85℃, conditioning time 30-60 seconds, ring die compression ratio 1:(8-12), ring die aperture ø3.0-4.0mm, pressure roller-ring die gap 0.3-0.4mm, pellet mill current load ≤90% of rated current, moisture content after conditioning 16.0-17.0%, pellet extrusion temperature 80-90℃;

[0041] Large chicken feed (22 days to slaughter): conditioning temperature 75 - 85℃, conditioning time 30 - 60 seconds, ring die compression ratio 1:(10 - 14), ring die aperture ø3.5 - 4.5mm, pressure roller-ring die gap 0.3 - 0.5mm, pellet mill current load ≤ 95% of rated current, moisture content after conditioning 16.0 - 17.0%, pellet extrusion temperature 80 - 90℃;

[0042] Step 3: Add the corn grits obtained in Step 1 and the pellet feed base components prepared in Step 2 into a mixing device at a mass ratio of (15-30):(70-85), mix them evenly again, and obtain the corn grits and pellet feed for broiler farming.

[0043] The following detailed description, in conjunction with specific embodiments, illustrates the broiler feed pellets and their preparation method of this application. It should be noted that the preparation process of the pelleted feed pellets in the following embodiments is consistent with the aforementioned preparation method for broiler feed pellets and will not be elaborated further. Furthermore, unless otherwise specified, the experimental methods used in the following embodiments are conventional experimental procedures in the field. Unless otherwise specified, the raw materials, equipment, and other consumables involved in the embodiments are standard products that can be routinely obtained through commercial channels.

[0044] Example 1: Effect of Corn Particle Size in Granulated Feed on Feeding Effects in Broiler Chickens

[0045] 1. Experimental Objective

[0046] In the broiler chicken stage (13-21 days old), feeding trials were conducted using corn grits with different particle sizes to verify the effect of corn particle size on feeding results.

[0047] 2. Experimental Materials and Methods

[0048] 2.1 Test period: April 22-30, 2025

[0049] 2.2 Test Site: A cooperative broiler farm of Shandong Zhonggu Group

[0050] 2.3 Experimental subjects: 13-day-old AA+ white-feathered broiler chickens.

[0051] 2.4 Experimental Design: The experiment consisted of two experimental groups and one control group, with chicken flocks in different locations within the same building and having the same initial growth conditions. The control group used a feed with normal corn kernel size (99% passing through a 5mm woven sieve, and no more than 10% of the material passing through a 1.0mm woven sieve). Experimental group 1 used a feed with small corn kernel size (99% passing through a 3mm woven sieve, and no more than 10% of the material passing through a 1.0mm woven sieve), and experimental group 2 used a feed with large corn kernel size (99% passing through an 8mm woven sieve, and no more than 10% of the material passing through a 3.0mm woven sieve). The flock information and feed formula are shown in Tables 1-2 below.

[0052] Table 1

[0053]

[0054] Table 2. Granulated feed formulation

[0055]

[0056] Premix No. 1 formula: 1.2kg lysine (98.5%), 1.5kg lysine (98.5%), 0.5kg compound vitamins, 1.0kg compound trace elements, 1.0kg probiotics, 1.0kg enzyme preparation, and 3.8kg other excipients (wheat bran).

[0057] Premix No. 2 formula: 1.0 kg of lysine (98.5%), 1.2 kg of threonine (98.5%), 0.4 kg of compound vitamins, 1.0 kg of compound trace elements, 0.8 kg of probiotics, 0.8 kg of enzyme preparation, and 4.8 kg of other excipients (wheat bran).

[0058] 3. Data Recording Table

[0059] Each group recorded relevant indicators such as the number of chickens at the beginning of the period, the number of chickens at the end of the period, the survival rate, the weight of chickens at the beginning of the period, the weight of chickens at the end of the period, and the feed conversion ratio, as shown in Table 3 below.

[0060] Table 3

[0061]

[0062] 4. Analysis of test results (data will be analyzed and summarized by Zhonggu Technical Department after feedback)

[0063] Table 4 Comparison between experimental group 1 and control group

[0064]

[0065] Table 5. Comparison between Experimental Group 2 and the Control Group

[0066]

[0067] Analysis of the experimental results showed that when the corn kernels in the pelleted feed were too small (Experimental Group 1), the survival rate decreased by 0.13% compared to the normal kernel size, the weight gain decreased by only 11g, and the feed conversion ratio increased by 0.004. When the corn kernels in the pelleted feed were too large (Experimental Group 2), the survival rate decreased by 0.46% compared to the normal kernel size, the weight gain decreased by only 18g, and the feed conversion ratio increased by 0.009.

[0068] The experimental results show that the size of corn kernels in the pelleted feed has an impact on the feeding effect; kernels that are too large or too small will reduce the feeding effect.

[0069] Example 2: Effect of Corn Particle Size in Granulated Feed on Feeding Effects on Broiler Chickens

[0070] 1. Experimental Objective

[0071] Feeding trials were conducted on broiler chickens in the later stages (22 days to slaughter) using feeds with different corn particle sizes to verify the effect of corn particle size on feeding performance.

[0072] 2. Experimental Materials and Methods

[0073] 2.1 Test period: May 1st - May 19th, 2025

[0074] 2.2 Test Site: A cooperative broiler farm of Shandong Zhonggu Group

[0075] 2.3 Experimental subjects: 22-day-old AA+ white-feathered broiler chickens.

[0076] 2.4 Experimental Design: The experiment consisted of two experimental groups and one control group, with chicken flocks in different locations within the same building and having the same initial growth conditions. The control group used a feed with normal corn kernel size (99% passing through an 8mm woven sieve, and no more than 10% of the material passing through a 3.0mm woven sieve). Experimental group 1 used a feed with small corn kernel size (99% passing through a 5mm woven sieve, and no more than 10% of the material passing through a 1.0mm woven sieve), and experimental group 2 used a feed with large corn kernel size (99% passing through a 12mm woven sieve, and no more than 10% of the material passing through a 5.0mm woven sieve). The flock information and feed formula are shown in Tables 6-7 below.

[0077] Table 6

[0078]

[0079] Table 7

[0080]

[0081] 3. Data Recording

[0082] Each group recorded relevant indicators such as average weight of chickens at slaughter, feed conversion ratio, survival rate, and gizzard size, as shown in Tables 8-9 below.

[0083] Table 8

[0084]

[0085] Table 9

[0086]

[0087] 4. Analysis of test results (data will be analyzed and summarized by Zhonggu Technical Department after feedback)

[0088] Table 10

[0089]

[0090] Table 11

[0091]

[0092] Analysis of the experimental results showed that when the corn particles in the pelleted feed were too small (experimental group 1), the survival rate decreased by 0.33% compared to the normal particle size, the average slaughter weight decreased by 0.41 kg, the feed conversion ratio increased by 0.04, and the average gizzard weight decreased by 7 g. When the corn particles in the pelleted feed were too large (experimental group 2), the survival rate decreased by 0.26% compared to the normal particle size, the average slaughter weight decreased by 0.33 kg, the feed conversion ratio increased by 0.05, and the average gizzard weight decreased by 4.9 g.

[0093] The experimental results show that the size of corn kernels in the pelleted feed has a significant impact on the feeding effect; kernels that are too large or too small will reduce the feeding effect.

[0094] Example 3: Comparative Experiment on the Feeding Effects of Granulated Feed with Pelleted Feed and Whole Pelleted Feed

[0095] 1. Experimental Objective

[0096] During the commercial broiler breeding cycle, two groups of chickens were selected and fed with a mixture of ground feed and pelleted feed respectively to conduct a feeding experiment and verify the effects of the two feeds.

[0097] 2. Experimental Materials and Methods

[0098] 2.1 Test period: August 16, 2024 - September 24, 2024

[0099] 2.2 Test Site: A cooperative broiler farm of Shandong Zhonggu Group

[0100] 2.3 Experimental subjects: 1-day-old AA+ white-feathered broiler chickens.

[0101] 2.4 Experimental Design:

[0102] Eight chicken houses were selected for comparison, with four houses forming one group and 120,000 chickens in each group. They were fed either whole pelleted feed or a mixture of pelleted and ground feed, and the formula information is shown in Tables 12-13 below.

[0103] The whole pellet feed group: feed broiler chickens with crushed feed 510 small for 1-10 days old, feed them with pellets 510 large for 11-21 days old, and feed them with pellets 511 from 22 days old to slaughter. Feed them in three stages.

[0104] Table 12 All-Pellet Feed Formulation

[0105]

[0106] Premix No. 1 formula: 1.2kg lysine (98.5%), 1.5kg threonine (98.5%), 0.5kg compound vitamins, 1.0kg compound trace elements, 1.0kg probiotics, 1.0kg enzyme preparation, and 3.8kg other excipients (wheat bran).

[0107] Premix No. 2 formula: 1.0 kg of lysine (98.5%), 1.2 kg of threonine (98.5%), 0.4 kg of compound vitamins, 1.0 kg of compound trace elements, 0.8 kg of probiotics, 0.8 kg of enzyme preparation, and 4.8 kg of other excipients (wheat bran).

[0108] Premix No. 3 formula: 0.8 kg of lysine (98.5%), 1.0 kg of threonine (98.5%), 0.3 kg of compound vitamins, 1.0 kg of compound trace elements, 0.8 kg of enzyme preparation, and 6.1 kg of other auxiliary materials (wheat bran).

[0109] Crushed feed plus pellet feed group: 1-12 days old, feed broiler crushed feed 510 small (same as pellet feed 510 small); 13-21 days old, feed crushed feed plus pellet feed 510; 22-28 days old, feed crushed feed plus pellet feed 511; 29 days old to slaughter, feed crushed feed plus pellet feed 512.

[0110] Table 13 Granulated feed formulation

[0111]

[0112] Premix No. 1 formula: 1.2kg lysine (98.5%), 1.5kg threonine (98.5%), 0.5kg compound vitamins, 1.0kg compound trace elements, 1.0kg probiotics, 1.0kg enzyme preparation, and 3.8kg other excipients (wheat bran).

[0113] Premix No. 2 formula: 1.0 kg of lysine (98.5%), 1.2 kg of threonine (98.5%), 0.4 kg of compound vitamins, 1.0 kg of compound trace elements, 0.8 kg of probiotics, 0.8 kg of enzyme preparation, and 4.8 kg of other excipients (wheat bran).

[0114] Premix No. 3 formula: 0.8 kg of lysine (98.5%), 1.0 kg of threonine (98.5%), 0.3 kg of compound vitamins, 1.0 kg of compound trace elements, 0.8 kg of enzyme preparation, and 6.1 kg of other auxiliary materials (wheat bran).

[0115] The feed formulation for the pelleted feed group includes a 22-28 day age stage, while the other stages are the same as the pelleted feed group formulation.

[0116] 3. Data Recording Table

[0117] The experiment has ended, and the experimental data on the breeding effects of the two groups are shown in Tables 14-15 below.

[0118] Table 14 Comparison of Livestock Slaughter Data

[0119]

[0120] Table 15 Comparison of Chicken Gizzard Weight

[0121]

[0122] 4. Analysis of test results (data will be analyzed and summarized by Zhonggu Technical Department after feedback)

[0123] According to the analysis of the test results, the survival rate of the feed with added grits was 0.26% higher than that of the whole pellet group, the average weight at slaughter was 0.265%, the feed conversion ratio was 0.027 lower, the average weight of chicken gizzards was 10.4g higher, and the European index was 28 higher.

[0124] The experimental results showed that broiler chickens fed a mixture of feed and pellets had significantly better breeding outcomes compared to those fed entirely with pellets. Furthermore, the mixture increased the weight of the chicken gizzards, thus improving overall farming efficiency.

[0125] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

[0126] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A broiler chicken feed consisting of ground meat and pellets, characterized in that, It includes corn grits components and pelleted feed base components; the mixing mass ratio of the corn grits components to the pelleted feed base components is (15-30):(70-85); The particle size of the corn grits component is such that 99% passes through a 5-8mm woven sieve, and the mass percentage of the material passing through a 1.0-3.0mm woven sieve is ≤10%.

2. The broiler feed with added pellets as described in claim 1, characterized in that, By weight percentage, the basic components of the pelleted feed consist of the following raw materials: corn 30-50%, wheat flour 5-8%, cottonseed meal 2-3%, soybean oil 1-2%, chicken oil 3-9%, soybean meal 30-33%, corn gluten meal 3-5%, feather meal 1-1.5%, baking soda 1-1.5%, limestone powder 1-1.5%, dicalcium phosphate 0.9-1.0%, salt 0.2-0.4%, compound amino acids 1.0%, compound vitamins 0.05%, compound trace elements 0.1%, probiotics 0.1%, enzyme preparations 0.1%, and the remainder being conventional feed additives.

3. The broiler feed with added pellets as described in claim 2, characterized in that, The complex amino acid is composed of L-lysine, DL-methionine, and L-threonine.

4. The broiler feed with added pellets as described in claim 2, characterized in that, The multivitamin is composed of vitamin A, vitamin D3, vitamin E, vitamin K3, vitamin B1, vitamin B2, vitamin B6, and vitamin B1. 12 It is composed of nicotinamide, calcium pantothenate, folic acid, biotin, vitamin C, antioxidants, and rice husk.

5. The broiler feed with added pellets as described in claim 2, characterized in that, The composite trace elements are composed of ferrous sulfate, copper sulfate, basic manganese chloride, basic zinc chloride, calcium iodate, sodium selenite, and stone powder.

6. The broiler feed with added pellets according to claim 2, characterized in that, The probiotics are a mixture of Bacillus licheniformis and Clostridium butyricum in a mass ratio of 9:

1.

7. The broiler feed with added pellets according to claim 2, characterized in that, The enzyme preparation is a compound of xylanase, β-mannanase and phytase in a mass ratio of 5:1:

4.

8. The broiler feed with added pellets as described in claim 1, characterized in that, The particle size of the corn grits is different for broiler chickens at different growth stages: For medium-sized chickens: 99% of the corn grits should pass through a 5mm woven sieve, and the mass percentage of the material passing through a 1.0mm woven sieve should be ≤10%. Furthermore, the mass percentage of corn grits in the grits-powdered feed should be 15-20%. For adult chickens: 99% of the corn grits component passes through an 8mm woven sieve, and the mass percentage of the material passing through a 1.0mm woven sieve is ≤10%, and the mass percentage of the corn grits component in the grits-powdered feed is 30%.

9. A method for preparing the broiler feed with added grains as described in claims 1-8, characterized in that, Includes the following steps: Step 1: Corn crushing process A double-roll crusher is selected, employing extrusion, shearing, and tearing crushing methods to break corn into corn grits that meet the particle size requirements. During the crushing process, the crusher parameters are controlled to ensure that 99% of the corn grits pass through a 5-8mm woven screen, and the undersize of a 1.0-3.0mm woven screen is ≤10%. Step 2: Preparation of basic components for pelleted feed Weigh the raw materials required for the basic components of pelleted feed, and perform mixing and pelleting operations; The mixing operation parameters are as follows: mixing time 3 minutes, spindle speed 30-60 rpm, filling rate 60-80%, liquid addition ≤5%, and mixing uniformity target CV≤7%. Step 3: Add the corn grits obtained in Step 1 and the pellet feed base components prepared in Step 2 into a mixing device at a mass ratio of (15-30):(70-85), mix them evenly again, and obtain the corn grits and pellet feed for broiler farming.

10. The method for preparing broiler feed with added grains according to claim 9, characterized in that, Pelletizing parameters should be adjusted according to the broiler's growth stage: Chick feed: conditioning temperature 70-80℃, conditioning time 20-40 seconds, ring die compression ratio 1:(8-10), ring die aperture ø2.0-3.0mm, pressure roller-ring die gap 0.2-0.3mm, pellet mill current load ≤ 85% of rated current, moisture content after conditioning 15.5-16.5%, pellet extrusion temperature 75-85℃; Medium-sized chicken feed: conditioning temperature 75 - 85℃, conditioning time 30 - 60 seconds, ring die compression ratio 1:(8 - 12), ring die aperture ø3.0 - 4.0mm, pressure roller-ring die gap 0.3 - 0.4mm, pellet mill current load ≤90% of rated current, moisture content after conditioning 16.0 - 17.0%, pellet extrusion temperature 80 - 90℃; Large chicken feed: conditioning temperature 75-85℃, conditioning time 30-60 seconds, ring die compression ratio 1:(10-14), ring die aperture ø3.5-4.5mm, pressure roller-ring die gap 0.3-0.5mm, pellet mill current load ≤95% of rated current, moisture content after conditioning 16.0-17.0%, pellet extrusion temperature 80-90℃.

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