Feed additive for reducing abdominal fat percentage and improving meat quality of broiler chickens and application of feed additive
By adding summer and autumn albino tea to broiler feed, the problems of high feed costs and insufficient utilization of albino tea resources in the prior art are solved, and the effect of reducing the belly fat rate of broiler and improving meat quality is achieved.
Patent Information
- Application Number
- CN202411805495.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-02-11
AI Technical Summary
In the prior art, the method of reducing the belly fat rate of broiler by feed additives is relatively high in feed costs, and there is a lack of efficient recycling and utilization of albino tea resources in summer and autumn.
Probiotic tea is used to make summer and autumn albino tea as feed additives, and mix it evenly with the basic feed by grinding it into powder to prepare chicken mixed feed, with an added amount of 1%-4%.
Reduce the belly fat rate of broiler, improve the flavor, tenderness and juiciness of chicken, realize efficient recycling and utilization of waste tea resources, and reduce feed costs.
Smart Images
Figure CN119404949A_ABST
Abstract
Description
Technical Field
[0001] The invention patent relates to the technical field of feed additives, specifically, to a feed additive for reducing the abdominal fat rate of broiler chickens and improving meat quality and its application. Background Art
[0002] The abdominal fat rate of broilers is an important factor affecting the quality of their meat. Studies have shown that fat deposited in the muscles is an important factor affecting the quality and flavor of meat. The abdominal fat rate and meat quality of broilers are affected by many factors such as genetics, nutrition, and feeding system. Reasonable feed ratios can improve the abdominal fat rate and meat quality of broilers, thereby improving the market competitiveness of broilers.
[0003] At present, in the prior art, there are usually the following strategies for reducing the abdominal fat rate of broiler chickens and improving their meat quality:
[0004] 1. Feed nutrition regulation:
[0005] Adjustment of dietary composition: Studies have shown that adjusting the energy and protein ratio in the diet can affect the abdominal fat rate of broilers. For example, reducing the total fat content in the diet, increasing the proportion of grains and grain products, and prohibiting animal meat and bone meal and growth hormones can reduce the abdominal fat rate.
[0006] 2. Protein feed selection: Different protein feeds have an impact on chicken flavor and body fat accumulation. For example, feather meal can reduce abdominal fat and carcass fat.
[0007] 3. Minerals and trace elements: Adding manganese to the diet can effectively reduce abdominal fat deposition in broilers, and the effect of organic manganese is better than that of inorganic manganese. In addition, the addition of chromium can also significantly reduce the abdominal fat rate of broilers.
[0008] 4. Feed additives:
[0009] Yucca extract: The active ingredients in yucca extract can promote animal growth, reduce harmful gases, regulate immune function, improve meat quality, and reduce abdominal fat rate.
[0010] Clostridium butyricum and xylooligosaccharides: Adding Clostridium butyricum and xylooligosaccharides to the diet can significantly reduce the abdominal fat rate of broilers and improve meat quality.
[0011] 5. Vitamin additives:
[0012] Vitamin E: Adding vitamin E to the diet can reduce muscle drip loss, increase muscle a* value, reduce the malondialdehyde content (MDA) in muscle storage, inhibit muscle lipid oxidation, extend the shelf life of the carcass, and improve the fatty acid composition.
[0013] 6. Genetic selection:
[0014] Low-fat and food-saving broiler chicken strain: Breeding low-fat and food-saving broiler chicken strain is one of the important goals of global broiler breeding. By selecting major effect genes and markers that affect abdominal fat traits, the abdominal fat content of broilers can be reduced.
[0015] 7. Whole genome selection technology:
[0016] Genomic breeding value: The use of whole genome selection technology can be used for early selection, shorten the generation interval, improve the genetic progress of broilers, and thus reduce the abdominal fat rate.
[0017] In the prior art, the comprehensive application of the above strategies can effectively reduce the abdominal fat rate of broilers, thereby improving the meat quality.
[0018] However, the feed cost of reducing abdominal fat rate by using feed additives in the prior art is relatively high. In addition, through research, it is found that albino tea products are all picked in spring, and there is no efficient recovery and utilization of albino tea resources in summer and autumn at home and abroad. Therefore, based on the above-mentioned prior art problems, this application designs and provides a feed additive for reducing abdominal fat rate of broilers and improving meat quality and its application. Summary of the invention
[0019] The purpose of the present invention is to solve the prior art problems raised in the above background technology, and to provide a feed additive and application thereof for reducing the abdominal fat rate of broiler chickens and improving meat quality.
[0020] The above-mentioned purpose of the present invention is achieved like this:
[0021] The scheme of the present invention provides a feed additive for reducing the abdominal fat rate of broiler chickens and improving meat quality. The feed additive is a probiotic tea made from summer and autumn albino tea.
[0022] Furthermore, the addition amount of the summer-autumn albino tea-made probiotic tea is 1%-4%.
[0023] Furthermore, the addition amount of the summer-autumn albino tea-made probiotic tea is 1%.
[0024] Furthermore, the addition amount of the summer-autumn albino tea-made probiotic tea is 4%.
[0025] Furthermore, the addition amount of the summer-autumn albino tea-made probiotic tea is 2%.
[0026] On the other hand, the technical solution of the present invention provides a feed additive for reducing the abdominal fat rate of broiler chickens and improving meat quality, and the feed additive is used in preparing mixed feed for chickens.
[0027] Furthermore, the preparation method of the chicken mixed feed is: crushing the summer and autumn albino tea-made probiotic tea into powder by a grinder, and then uniformly mixing it with the basic feed by a mixer according to the corresponding adding ratio to prepare the chicken mixed feed.
[0028] Compared with the prior art, the present invention has the following beneficial effects:
[0029] In the scheme of the present invention, the albino tea resources without summer and autumn seasons are efficiently recovered and utilized, and a feed additive designed to reduce the abdominal fat rate of broiler chickens and improve the meat quality can not only realize the "waste into treasure" of discarded tea resources, but also reduce feed costs; and the feed additive of the present invention can reduce the abdominal fat rate of broiler chickens, improve the flavor, tenderness and juiciness of chicken meat, and has the effects of warming the middle and replenishing qi, benefiting the five internal organs, nourishing the body, strengthening the tendons and bones, and preventing cardiovascular diseases; in addition, the scheme of the present invention has important practical significance and positive application prospects for the tea deep processing industry and the meat and poultry industry. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Figure 1 It is a beneficial tea made from summer and autumn albino tea, a Liyang broiler and an anatomical abdominal cavity diagram in the embodiment of the present invention;
[0031] Figure 2 This is a liver image and Oil Red O staining image of a broiler made with summer and autumn albino tea and beneficial tea according to an embodiment of the present invention;
[0032] Figure 3 It is a graph of TG index of broilers made with summer and autumn albino tea according to an embodiment of the present invention. DETAILED DESCRIPTION
[0033] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0034] The implementation of the present invention is described in detail below in conjunction with specific embodiments.
[0035] Reference Figure 1-Figure 3 The figure shows a preferred embodiment of the present invention.
[0036] Embodiment 1: The embodiment of the present invention provides a feed additive for reducing the abdominal fat rate of broilers and improving meat quality. The feed additive is a probiotic tea made from summer and autumn albino tea. The feed additive is used in the preparation of mixed feed for chickens. The preparation method of the mixed feed for chickens is: the probiotic tea made from summer and autumn albino tea is crushed into powder by a grinder, and then mixed with the basic feed by a mixer according to the corresponding addition ratio to obtain a mixed feed for chickens. The addition amount of the feed additive, the probiotic tea made from summer and autumn albino tea, is 1%.
[0037] Embodiment 2: The embodiment of the present invention provides a feed additive for reducing the abdominal fat rate of broilers and improving meat quality. The feed additive is a probiotic tea made from summer and autumn albino tea. The feed additive is used in the preparation of mixed feed for chickens. The preparation method of the mixed feed for chickens is: the probiotic tea made from summer and autumn albino tea is crushed into powder by a grinder, and then mixed with the basic feed by a mixer according to the corresponding addition ratio to obtain a mixed feed for chickens. The addition amount of the feed additive, the probiotic tea made from summer and autumn albino tea, is 4%.
[0038] Embodiment 3: The embodiment of the present invention provides a feed additive for reducing the abdominal fat rate of broilers and improving meat quality. The feed additive is a probiotic tea made from summer and autumn albino tea. The feed additive is used in the preparation of mixed feed for chickens. The preparation method of the mixed feed for chickens is: the probiotic tea made from summer and autumn albino tea is crushed into powder by a grinder, and then mixed with the basic feed by a mixer according to the corresponding addition ratio to obtain a mixed feed for chickens. The addition amount of the feed additive, the probiotic tea made from summer and autumn albino tea, is 2%.
[0039] The following is a specific experiment of the above-mentioned embodiment 1 to embodiment 3 of the present invention:
[0040] Experimental protocol:
[0041] 1. The chickens were raised in cages and fed with basic feed during the brooding period. After the brooding period, basic feed, 1%, 2% and 4% mixed feed of probiotic tea made from summer and autumn albino tea, and 1% black tea and 1% green tea mixed feed were placed in different cages at regular intervals and in fixed quantities every day. The chickens were allowed to eat and drink freely for 24 weeks according to conventional breeding methods.
[0042] 2. The chickens are broiler breeds from Liyang, Changzhou City, Jiangsu Province.
[0043] 3. The summer and autumn albino tea-based probiotic tea, 1% black tea and 1% green tea with addition ratios of 1%, 2% and 4% are first crushed into powder by a grinder, and then evenly mixed with the basic feed by a mixer according to the corresponding addition ratio to prepare chicken mixed feed containing 1% summer and autumn albino tea-based probiotic tea powder, chicken mixed feed containing 2% summer and autumn albino tea-based probiotic tea powder, chicken mixed feed containing 4% summer and autumn albino tea-based probiotic tea powder, chicken mixed feed containing 1% black tea powder and chicken mixed feed containing 1% green tea powder respectively.
[0044] 4. During the brooding period of 0-6 weeks, 120 one-day-old Liyang broilers were raised on flat litter in the same chicken house, with free access to food and water, and conventional feeding and management. The nutritional level of the feed is shown in Table 1.
[0045] Table 1 Nutritional level of feed during brooding period
[0046]
[0047] 5. In the 7th week, the basic diet was changed and the animals were allowed to adapt for one week. The nutritional level of the feed was as shown in Table 2.
[0048] Table 2 Nutritional levels of basic diet feed
[0049]
[0050] 6. During the 7th to 24th week of the test, broiler chickens were tested using basic feed without any tea powder, mixed feed containing 1% summer and autumn albino tea probiotic tea powder, mixed feed containing 2% summer and autumn albino tea probiotic tea powder, mixed feed containing 4% summer and autumn albino tea probiotic tea powder, mixed feed containing 1% black tea powder, and mixed feed containing 1% green tea powder. During the test, the chickens were allowed to eat and drink freely. The experimental groups are shown in Table 3.
[0051] Table 3 Experimental groups
[0052]
[0053] 7. After the trial period, the broiler feed intake, body weight, slaughter indicators and other data were counted, and broiler blood, liver, abdominal fat, leg muscle and pectoral muscle samples were collected. After testing and statistics, the results showed that adding different proportions of summer and autumn albino tea-made probiotic tea can reduce the broiler abdominal fat rate and muscle fat content, increase muscle protein content, and thus improve meat quality and taste, and 2% summer and autumn albino tea-made probiotic tea has the best probiotic tea chicken feed addition ratio.
[0054] The above experimental scheme of the present invention is achieved by:
[0055] 1. Materials
[0056] 1.1. Source of Tea
[0057] The white tea fresh leaf probiotic tea (Longxin probiotic tea) is provided by a cooperative in Liyang City, Jiangsu Province; the green tea leaves and black tea leaves are respectively sourced from commercially available first-grade green tea and black tea.
[0058] 1.2 Experimental Animals
[0059] 120 one-day-old Liyang broiler chicks were purchased from Liyang Breeding Farm.
[0060] 1.3 Reagents and Instruments
[0061] Triglyceride (TG) kits were purchased from Nanjing Jiancheng Bioengineering Institute; high-density meat component analyzer was used to detect the percentage of different meat chemical components (water, protein, fat, collagen).
[0062] 1.4 Animal feed
[0063] The basic feed for the brooding period was purchased from Jiangsu Tiancheng Technology Group Nantong Feed Co., Ltd.; the basic feed for the growing period was purchased from a chicken farm in Changzhou, Jiangsu.
[0064] 2. Methods
[0065] 2.1. Preparation of probiotic tea matrix feed
[0066] 1% black tea and 1% green tea were added to each kg of the basic diet, 1% probiotic tea was added to each kg of the basic diet in the low-dose probiotic tea group, 2% probiotic tea was added to each kg of the basic diet in the medium-dose probiotic tea group, and 4% probiotic tea was added to each kg of the basic diet in the high-dose probiotic tea group. The basic diet was prepared according to the nutritional requirements of NRC (1994) and the animals were fed conventionally.
[0067] 2.2 Animal Grouping
[0068] In the first 1-6 weeks, all Liyang chickens were not grouped, and were fed with basic feed and free access to water. Subsequently, 120 Liyang chickens were randomly divided into groups, 20 in each group, including the control group (Control), dark tea group (Dark tea), green tea group (Greentea), low-dose probiotic tea group (I), medium-dose probiotic tea group (II) and high-dose probiotic tea group (III), and the formal experiment began. After 24 weeks of feeding, the feed intake, body weight and slaughter index data were counted, and broiler blood, liver, abdominal fat, breast muscle and leg muscle samples were collected for subsequent experimental analysis.
[0069] 2.3 Data Processing
[0070] SPSS25.0 software and GraphPad Prism9.3 software were used for data processing. "*", "**", "***" indicate that all treatment groups were compared with the control group, indicating P < 0.05, P < 0.01, P < 0.001, respectively, with significant differences; "#", "##", "###" indicate that all probiotic tea groups I, II, and III were compared with the Dark tea group and the Green tea group, indicating P < 0.05, P < 0.01, P < 0.001, respectively, with significant differences.
[0071] 3. Experimental results
[0072] 3.1. Feed intake, body weight and slaughter index of broilers
[0073] As shown in Table 4, under the same feeding conditions, compared with the Control group, the feed intake, body weight, half-eviscerated weight and full-eviscerated weight of the experimental group at week 24 were significantly different, the abdominal fat and liver were significantly reduced, and the breast and leg muscle weights increased; compared with the Dark tea group and the Green tea group, the abdominal fat of the probiotic tea groups I, II and III was significantly reduced. This experiment found that adding a suitable proportion of probiotic tea made from summer and autumn albino tea can still increase the breast and leg muscle weights, reduce abdominal fat, and improve the carcass quality of broilers when the body weight is reduced, and adding 2% probiotic tea made from summer and autumn albino tea is the best feed addition ratio.
[0074] Table 4 Basic data of broiler chickens
[0075]
[0076] 3.2. Percentage of chemical components in broiler meat
[0077] As shown in Table 5, compared with the Control group, the protein content in the chest and leg muscles of the test group increased significantly, the fat content and collagen content decreased significantly, and the weight of the chest and leg muscles increased; compared with the Dark tea group and the Green tea group, there was a significant difference in the fat content in the chest and leg muscles of the probiotic tea II and III groups. A certain amount of fat can improve the flavor, tenderness and juiciness of chicken. This experiment found that adding a suitable proportion of probiotic tea made from summer and autumn albino tea can increase the protein content, reduce the fat content, and improve the taste of broilers, and adding 2% probiotic tea made from summer and autumn albino tea is the best feed addition ratio.
[0078] Table 5 Meat component analysis
[0079]
[0080] 3.3 Observation of Pathological Changes and Oil Red O Staining in Broiler Liver
[0081] As attached Figure 2 It can be seen that compared with the Control group, the liver of the test group showed a healthy color, and the results of liver oil red O staining showed that the lipid accumulation of the test group gradually decreased; compared with the Dark tea group and the Green tea group, the lipid accumulation of the probiotic tea I, II, and III groups was significantly reduced. This experiment shows that the addition of an appropriate proportion of summer and autumn albino tea to make probiotic tea has a significant effect in alleviating lipid accumulation in the body.
[0082] 3.4. TG index of broiler chicken
[0083] By the attached Figure 3It can be seen that compared with the Control group, the TG levels of the probiotic tea groups I, II, and III were significantly reduced (P<0.001); compared with the Dark tea group and Green tea group, the TG levels of the probiotic tea groups I, II, and III were significantly reduced (P<0.01). This experiment found that adding a suitable proportion of summer and autumn albino tea to make probiotic tea can alleviate the serum TG level of broilers, improve liver lipid accumulation, and reduce the risk of liver disease.
[0084] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A feed additive for reducing abdominal fat rate of broiler chickens and improving meat quality, characterized in that: The feed additive is a probiotic tea made from summer and autumn albino tea.
2. A feed additive for reducing abdominal fat rate and improving meat quality of broiler chickens according to claim 1, characterized in that: The addition amount of the summer and autumn albino tea-made beneficial tea is 1%-4%.
3. A feed additive for reducing abdominal fat rate and improving meat quality of broiler chickens according to claim 2, characterized in that: The addition amount of the summer and autumn albino tea-made beneficial tea is 1%.
4. The feed additive for reducing abdominal fat rate and improving meat quality of broiler chickens according to claim 2, characterized in that: The addition amount of the summer and autumn albino tea-made beneficial tea is 4%.
5. The feed additive for reducing abdominal fat rate and improving meat quality of broiler chickens according to claim 2, characterized in that: The addition amount of the summer and autumn albino tea-made beneficial tea is 2%.
6. Use of the feed additive for reducing abdominal fat rate and improving meat quality of broiler chickens according to any one of claims 1 to 5 in preparing mixed feed for chickens.
7. The use according to claim 6, characterized in that: The preparation method of the chicken mixed feed is as follows: the summer and autumn albino tea-made probiotic tea is crushed into powder by a grinder, and then the powder is evenly mixed with the basic feed by a mixer according to a corresponding adding ratio to obtain the chicken mixed feed.