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Method for Improving Laying Performance of Laying Hens

A technology for laying eggs and hens, which is applied in animal husbandry and other fields, can solve problems such as food intake and feed intake increase the burden on the gastrointestinal tract of animals, reduce the ability to digest and absorb nutrients, and affect the health of the gastrointestinal tract of animals. Achieve the effects of improving egg production performance and egg quality, increasing feed cost, and increasing eggshell thickness

Active Publication Date: 2021-09-17
JIANGSU INST OF POULTRY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the late stage of laying eggs, the ability to digest and absorb nutrients such as calcium in domestic chickens is reduced. The root cause is not entirely caused by insufficient nutrient content in the diet, but may be caused by excessive stone powder and relatively high intake in the diet 1. Feed intake increases the burden of the animal's gastrointestinal tract, which has long affected the health of the animal's gastrointestinal tract, resulting in an imbalance of calcium metabolism, which in turn leads to a decline in the egg production performance of hens in the late laying period, and seriously affects animal welfare

Method used

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  • Method for Improving Laying Performance of Laying Hens
  • Method for Improving Laying Performance of Laying Hens
  • Method for Improving Laying Performance of Laying Hens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment one: dynamic feeding test

[0028] 1 According to the feed formula table for Hai-Line brown layer hens in the late laying period, the basic ration was formulated (as shown in Table 1), and the ration with a calcium content of 3.444% was obtained, and stored in a dry place away from light after bagging.

[0029] Table 1 Feed formula for Hailan brown layer hens in the late laying period

[0030]

[0031] 2 Experimental design

[0032] 2.1 Test materials and grouping

[0033] In this experiment, 70-week-old Hailan brown layer hens were selected as experimental animals. The average daily feed consumption was 120g / hen, and they were fed at 8:00 am and 2:00 pm every day. Calculate according to the number of chickens actually stored in the cage. Select 144 chickens in good health and condition, and randomly divide them into 2 groups, with 6 repetitions in each group and 12 chickens in each repetition. Feed consumption throughout the day; the dynamic feeding g...

Embodiment 2

[0077] Embodiment two: dietary calcium reduction test

[0078] 1 Formulate a calcium-reducing diet

[0079] 1.1 According to the standard of reducing the total calcium content from 3.44% to 3.01% (that is, a drop of 12.5%), reduce the stone powder in the feed of Hailan brown layer hens in the late laying period from 8.50% to 7.30%;

[0080] 1.2 Use 1.20% chaff to make up the proportion of stone powder removed.

[0081] Fully mix 1.1 and 1.2 with the raw materials of the diet (as shown in Table 9) to obtain a diet with a calcium content of 3.0%, and store it in a dry place away from light after bagging.

[0082] Table 9 Feed formula table for Hailan brown layer hens in late laying period

[0083]

[0084] 2 Experimental design

[0085] 2.1 Test materials and grouping

[0086] In this experiment, 70-week-old Hailan brown layer hens were selected as experimental animals. The average daily feed consumption was 120g / hen, and they were fed at 8:00 am and 2:00 pm every day. C...

Embodiment 3

[0127] Example 3: Two-factor test of dietary calcium reduction and dynamic feeding

[0128] 1 Formulate a calcium-reducing diet

[0129] 1.1 According to the standard of reducing the total calcium content from 3.44% to 3.01% (that is, a drop of 12.5%), reduce the stone powder in the feed of Hailan brown layer hens in the late laying period from 8.50% to 7.30%;

[0130] 1.2 Use 1.20% chaff to make up the proportion of stone powder removed.

[0131] Fully mix 1.1 and 1.2 with the raw materials of the diet (as shown in Table 9) to obtain a diet with a calcium content of 3.0%, and store it in a dry place away from light after bagging.

[0132] 2 Experimental design

[0133] 2.1 Test materials and grouping

[0134] In this experiment, 70-week-old Hailan brown layer hens were selected as experimental animals. The average daily feed consumption was 120g / hen, and they were fed at 8:00 am and 2:00 pm every day. Calculate according to the number of chickens actually stored in the ca...

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Abstract

The invention relates to a method for improving the laying performance of hens in the late stage of laying eggs. The method includes: adopting a dynamic feeding method: feeding one kind of ration formula twice, and feeding the average daily feed consumption in the morning. 1 / 3 to 2 / 5, 3 / 5 to 2 / 3 of the average daily feed consumption in the afternoon. The method of the present invention adopts the reduction of daily feed consumption and calcium-reducing formula rations in the later stage of egg production of hens, and combines the feeding process of dividing the daily feed total amount into two dynamic feedings, which can significantly reduce the daily feed consumption. Feed consumption and feed-to-egg ratio, maintaining shell weight ratio and eggshell thickness, on the basis of partially improving egg production performance and egg quality, effectively reduces feed cost; the application method in the present invention reduces the intake of stone powder for chickens It can reduce the burden on the gastrointestinal tract of animals and improve the level of animal welfare.

Description

technical field [0001] The invention relates to the field of animal nutrition research, and specifically refers to a method for saving feed cost of hens in late laying period, improving laying performance and eggshell quality. Background technique [0002] The post-laying syndrome of laying hens is an important problem that plagues laying hen farmers. It is mainly manifested in a sudden drop in laying rate of laying hens, an increase in feed-to-egg ratio, and a decrease in egg quality (especially the decline in eggshell quality) , decreased immunity, fatty liver, osteoporosis, poor feather quality, and reduced egg hatchability of broiler breeders. This phenomenon is particularly serious in the production of local laying hens and breeder breeds, which greatly affects the breeding benefits. The industry proposes to extend the culling age of laying hens and breeders (breeders include broiler breeders and layer breeders) from 72 weeks in the traditional sense to 80 weeks, or eve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K67/02
CPCA01K67/02
Inventor 童海兵施寿荣胡艳王强邵丹沈一茹张珊肖蕴祺张安燕磊黄河李鑫
Owner JIANGSU INST OF POULTRY SCI
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