Method for improving egg quality in later egg laying period

Abstract

The invention relates to the technical field of breeding research and development, and discloses a method for improving the quality of eggs in the later egg laying period, glucosamine is added into feed, and the effect of protecting the liver and the kidney can be achieved after the glucosamine is absorbed by laying hens in the later egg laying period. Meanwhile, the chicken feed has protection and detoxification functions on the liver of the chicken. Therefore, the egg laying period, the eggshell hardness, the Hough value and the like of the chickens are improved. Experimental results show that the method not only improves the egg quality in the later egg laying period, but also enhances the disease resistance of chickens, so that the effect of improving the egg quality is achieved, the application range is wide, and the comprehensive benefits are high.

Description

Technical Field

[0001] The invention belongs to the technical field of breeding development, and specifically relates to a method for improving egg quality in the late egg-laying period. Background Art

[0002] With the improvement of living standards, people pay more and more attention to health. Eggs are a nutritious daily consumable, which has led to the continuous expansion of laying hen farming. The laying process of laying hens requires a lot of physical energy and basic components in the body. After the peak egg-laying period, the body functions of laying hens begin to gradually decline, and the incidence of salpingitis increases. In the late egg-laying period, the weekly egg production rate of laying hens will drop by about 1%. Salpingitis in laying hens will cause the eggshells to become thinner and brittle, and the number of broken eggs and soft-shelled eggs will increase.

[0003] How to safely and effectively improve the egg quality of laying hens in the late egg-laying period, reduce broken eggs and soft-shell eggs, and other issues are receiving more and more attention. In actual production, the production performance of laying hens in the late egg-laying period is often improved by adding probiotics, prebiotics, plant extracts, bioactive peptides, and Chinese medicine compounds to the feed. However, probiotics and bioactive peptides are not easy to preserve, their activity is greatly affected by the ambient temperature, and there are many types with large differences in effects; the preparation process of plant extracts is complicated and the cost of use is high.

[0004] The existing methods for improving the quality of eggs in the late egg-laying period are difficult to improve the quality of eggs and the intestinal health of laying hens. An economical and practical scientific method is urgently needed to solve this problem. Summary of the invention

[0005] The purpose of the present invention is to provide a method for improving the quality of eggs in the late egg-laying period in view of the existing problems. By adding glucosamine components to feed, the chicken can achieve the effect of protecting the liver and kidney after absorption. At the same time, it has the function of protecting and detoxifying the liver of the chicken. Thereby improving the egg-laying cycle, eggshell hardness, Haugh value, etc. of the chicken. It also enhances the disease resistance of the chicken, thereby achieving the effect of improving the quality of the eggs.

[0006] The present invention is achieved through the following technical solutions: A method for improving the quality of laying eggs in the late egg-laying period, wherein the prepared feed premix is ​​added to the laying hen feed, wherein glucosamine is added to the feed premix. Specifically, the feed premix is ​​made of the following raw materials in parts by weight: 3-8 parts of glucosamine, 10-14 parts of corn, and 15-20 parts of soybean meal.

[0007] The preparation method comprises the following steps: The corn and soybean meal raw materials are dried to a moisture content of 5%-8%, cooled to room temperature, crushed and ground to a particle size of 0.10-0.15 mm, and then glucosamine is added and mixed thoroughly to obtain a dry mixed granular material, which is the feed premix, and vacuumed for storage. The glucosamine purity is greater than 98%.

[0008] The prepared feed premix is ​​added to laying hen feed at a mass ratio of 0.8-1:100-130 for daily feeding.

[0009] Furthermore, the late egg-laying hens are laying hens over 380 days old.

[0010] Furthermore, the feed containing glucosamine is fed to laying hens in the late egg-laying period for at least 30 days.

[0011] Compared with the prior art, the present invention has the following advantages: by adding glucosamine ingredients to the feed, the glucosamine ingredients can be absorbed by the laying hens in the late egg-laying period to protect the liver and kidneys. At the same time, it has the function of protecting and detoxifying the liver of the chicken. Thereby improving the egg-laying cycle, eggshell hardness, Haff value, etc. of the chicken. During the feeding process, the breeder only needs to add the feed premix to the chicken feed according to the ingredient ratio and stir it evenly. After the laying hens eat it, the glucosamine is absorbed and transformed in the intestinal tract of the laying hens, so that the glucosamine ingredients are absorbed during the egg formation process, and the eggshell thickness and Haff value are increased. The trial production data in the farm show that the egg production rate of laying hens in the late egg-laying period after adding glucosamine is improved, the eggshell hardness and Haff value are significantly improved, the egg breakage rate and soft shell rate are greatly reduced, and the Haff value is increased to about 80 compared with the previous 60-70. The freshness of the eggs can reach AA grade or higher, and the protein stability has the characteristics of high freshness and high nutritional value. The experimental results show that the present invention not only scientifically and effectively improves the egg quality of laying hens in the late egg-laying period, but also enhances the disease resistance of laying hens in the late egg-laying period, thereby achieving the effect of improving the egg quality. It has a wide range of applications and high comprehensive benefits, and can fully utilize breeding resources to achieve the healthy and sustainable development of aquaculture, "resource-saving" and "environmentally friendly" breeding industries, provide feasible ideas for the harmonious development of the environment, resources, economy and society, increase the supply of eggs, reduce the production cost of laying hen breeding, and improve the level of sustainable development of breeding. DETAILED DESCRIPTION

[0012] In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the technical solution provided by the present invention.

[0013] The corn and soybean meal used in the following examples were provided by Luoyang Oukebaik Biotechnology Co., Ltd.; glucosamine was a feed-grade product with a purity of 99% purchased from Shandong Aicai Biotechnology Co., Ltd.; and the feeding feed was purchased from the late laying compound feed-526 produced by Nanyang Fengyuan Poultry Co., Ltd. The feeding experiment was conducted at Wuming Farm in Yingquan District, Fuyang City.

[0014] Laying hen production performance test During the experiment, the number of eggs produced, total egg weight, number of broken soft eggs, number of dead and culled chickens were recorded on a daily basis, and the feed intake was counted. The egg production rate, soft and broken egg rate, qualified egg rate, average egg weight, average daily feed intake, and feed-egg ratio were calculated. The experimental chickens were observed every day, the number of diseases and dead chickens was recorded, and the incidence rate and mortality rate were calculated. The calculation method of the above indicators is as follows: Number of eggs laid: counted daily in replicates; Soft-shelled egg rate (%) = number of soft-shelled eggs / total number of eggs laid ´100; Qualified egg rate (%) = (number of eggs laid - number of soft-shelled eggs) / total number of eggs laid ´ 100; Average egg weight = total egg weight / total number of eggs (accurate to 0.01 g); Egg production rate (%) = total number of eggs laid / (total number of experimental chickens × number of experimental days) × 100; Feed-egg ratio (F / G) = total feed consumption / total egg weight; Average daily feed intake (ADFI) = total feed intake / (number of experimental days × total number of experimental chickens); Incidence rate (%) = number of diseased chickens / total number of experimental chickens × 100; Mortality rate (%) = number of dead chickens / total number of experimental chickens × 100.

[0015] Egg quality testing On the 10th day of each experiment, three eggs were randomly selected from each replicate for egg quality measurement. The measurement indicators and methods are as follows: Egg weight: Measured using an electronic balance with an accuracy of 0.01 g.

[0016] Egg shape index: Use an electronic digital display vernier caliper to measure the horizontal and vertical diameters of each egg, and calculate according to the formula: Egg shape index = horizontal diameter / vertical diameter × 100%.

[0017] Eggshell strength: Place the intact eggs on an eggshell strength tester for testing.

[0018] Albumin height, Haugh units and yolk color were measured using the Egg Analyzer.

[0019] Haugh unit (HU) = 100 × Log (H-1.7W 0.37+7.57) Among them, H represents the height of concentrated protein (mm), and W represents the egg weight (g) Eggshell thickness: Use an eggshell thickness gauge to measure the eggshell thickness at the sharp end, blunt end and middle part of the egg, and take the average value as the eggshell thickness.

[0020] Egg yolk ratio: Use an egg yolk separator to completely separate the egg white and yolk, collect the egg yolk and weigh it.

[0021] Yolk ratio (%) = yolk weight / total egg weight × 100 Eggshell ratio (%): eggshell weight / whole egg weight×100 Egg white ratio (%): egg white weight / whole egg weight×100.

[0022] The eggshell strength tester was produced by Japan's Robotmation company, model EFG-0503; the eggshell thickness meter was produced by Japan's Robotmation company, model ETG-1061; the multifunctional egg quality analyzer was produced by Japan's Robotmation company, model EMT-5200; the electronic scale was produced by the Dongyang Branch of Yongkang Yongzhou Weighing Instrument Co., Ltd., model ACS-30; the electronic balance was produced by Shanghai Huyueming Scientific Instrument Co., Ltd., model JY3002. Example 1

[0023] The prepared feed premix is ​​added to the laying hen feed, wherein glucosamine is added to the feed premix. The feed premix is ​​made of the following raw materials in parts by weight: 3 parts of glucosamine, 10 parts of corn, and 15 parts of soybean meal. The preparation method comprises the following steps: The corn and soybean meal raw materials are dried to a moisture content of 5%, cooled to room temperature, crushed and ground to a particle size of 0.10 mm, and then glucosamine is added and fully mixed to obtain a dry mixed granular material, which is the feed premix, and vacuumed for storage.

[0024] The prepared feed premix was added to laying hen feed at a mass ratio of 0.8:100 for daily feeding.

[0025] The feeding period of glucosamine-containing feed to laying hens in the late laying period is 30 days. Example 2

[0026] The prepared feed premix is ​​added to the laying hen feed, wherein glucosamine is added to the feed premix. The feed premix is ​​made of the following raw materials in parts by weight: 5.5 parts of glucosamine, 12 parts of corn, and 18 parts of soybean meal. The preparation method comprises the following steps: The corn and soybean meal raw materials are dried to a moisture content of 6.5%, cooled to room temperature, crushed and ground to a particle size of 0.12 mm, and then glucosamine is added and fully mixed to obtain a dry mixed granular material, which is the feed premix, and is vacuumed for storage.

[0027] The prepared feed premix was added to the laying hen feed at a mass ratio of 0.9:115 for daily feeding.

[0028] The feeding period of glucosamine-containing feed to laying hens in the late laying period is 30 days. Example 3

[0029] The prepared feed premix is ​​added to the laying hen feed, wherein glucosamine is added to the feed premix. The feed premix is ​​made of the following raw materials in parts by weight: 8 parts of glucosamine, 14 parts of corn, and 20 parts of soybean meal. The preparation method comprises the following steps: The corn and soybean meal raw materials are dried to a moisture content of 8%, cooled to room temperature, crushed and ground to a particle size of 0.15 mm, and then glucosamine is added and fully mixed to obtain a dry mixed granular material, which is the feed premix, and is vacuumed for storage.

[0030] The prepared feed premix was added to the laying hen feed at a mass ratio of 1:130 for daily feeding.

[0031] The feeding period of glucosamine-containing feed to laying hens in the late laying period is 30 days.

[0032] Comparative Example 1 The only difference from Example 1 is that the addition of glucosamine is omitted during the preparation of the feed premix, and the rest remains the same.

[0033] Comparative Example 2 The only difference from Example 2 is that during the preparation of the feed premix, the feed premix is ​​made of the following raw materials in parts by weight: 1 part of glucosamine, 12 parts of corn, and 18 parts of soybean meal, and the rest remain the same.

[0034] Comparative Example 3 The only difference from Example 3 is that during the preparation of the feed premix, the feed premix is ​​made of the following raw materials in parts by weight: 12 parts of glucosamine, 14 parts of corn, and 20 parts of soybean meal, and the rest remain the same.

[0035] Comparative experiment The feed premix was prepared by the methods of Examples 1-3 and Comparative Examples 1-3 and added to the laying hen feed. 700 390-day-old laying hens Yukou Jingfen No. 8 were randomly divided into 7 groups. There were 10 replicates in each group, and 10 chickens in each replicate. The control group was fed a basic diet for 30 days. The feeding time was from 6 am to 7 pm, generally divided into 2-3 feedings, and the feeding amount was based on a small amount of leftover feed in the trough. The irrelevant variables in the experiment were kept consistent, and the effective average values ​​were statistically calculated. The results are shown in the following table:

[0036] It can be seen that by comparing the experimental data of adding glucosamine, the hardness of the eggshell is greatly improved, the egg breakage rate is reduced, and the income of breeding is increased. Thus, the Haff value is greatly improved. The Haff value is usually 65-70. By adding glucosamine of the present invention, the Haff value can be increased to about 80. The freshness can reach AA grade or higher, and the protein stability has the characteristics of high freshness and high nutritional value, and the egg production rate is also greatly improved.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for improving the quality of eggs in the late egg-laying period, characterized in that: The prepared feed premix is ​​added to laying hen feed for daily feeding, and the addition mass ratio is 0.8-1:100-130. Glucosamine is added to the feed premix, and the feed premix is ​​made of the following raw materials in parts by weight: 3-8 parts of glucosamine, 10-14 parts of corn, and 15-20 parts of soybean meal.

2. A method for improving the quality of laying eggs in the late egg-laying period according to claim 1, characterized in that: The feed premix preparation method comprises the following steps: The corn and soybean meal raw materials are dried, cooled to room temperature, crushed and ground to a particle size of 0.10-0.15 mm, and then glucosamine is added and mixed thoroughly to obtain a dry mixed granular material, which is the feed premix, and is vacuumed for storage.

3. A method for improving the quality of eggs in the late egg-laying period according to claim 2, characterized in that: After corn and soybean meal raw materials are dried, the moisture content is between 3% and 5%.

4. A method for improving the quality of laying eggs in the late egg-laying period according to claim 1, characterized in that: The glucosamine purity is greater than 98%.

5. A method for improving egg quality in the late egg-laying period according to claim 1, characterized in that: The late egg-laying hens are laying hens over 380 days old.

6. A method for improving egg quality in the late egg-laying period according to claim 1, characterized in that: The feed containing glucosamine is fed to the laying hens in the late egg-laying period for at least 30 days.

Images