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Method for improving egg-laying performance of hens at later stage of egg laying

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 effect of reducing daily feed intake, reducing intake, and improving animal welfare

Active Publication Date: 2020-06-19
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 egg-laying performance of hens at later stage of egg laying
  • Method for improving egg-laying performance of hens at later stage of egg laying
  • Method for improving egg-laying performance of hens at later stage of egg laying

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: Dynamic feeding test

[0028] 1 According to the feed formula table for Hy-line brown layers in the late laying period, complete the basic diet preparation (as shown in Table 1) to obtain a diet with a calcium content of 3.444%. After bagging, store it in a dark and dry place for later use.

[0029] Table 1 Feed formula for Hy-line brown layer in late laying period

[0030]

[0031] 2 Experimental design

[0032] 2.1 Test materials and grouping

[0033] In this experiment, a 70-week-old Hailan brown layer was selected as the experimental animal, and the average daily feed consumption per day was 120g / bird. They were fed at 8:00 am and 2:00 pm each day, with each repeated daily feed consumption Calculated based on the actual number of chickens kept in the cage Select 144 chickens with good health and good condition, and randomly divide them into 2 groups, each with 6 replicates, and each replicate with 12 chickens. They are: control group, fed with a basal diet, divid...

Embodiment 2

[0077] Example 2: Dietary calcium reduction test

[0078] 1 Prepare 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 12.5% ​​decrease), the stone powder in the late stage feed of Hailan brown layer was reduced from 8.50% to 7.30%;

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

[0081] Mix 1.1 and 1.2 with ration raw materials (as shown in Table 9) to obtain a ration with a calcium content of 3.0%, which is bagged and stored in a dark and dry place for later use.

[0082] Table 9 Feed formula of Hy-line brown layer in late laying period

[0083]

[0084] 2 Experimental design

[0085] 2.1 Test materials and grouping

[0086] In this experiment, a 70-week-old Hailan brown layer was selected as the experimental animal, and the average daily feed consumption per day was 120g / bird. They were fed at 8:00 in the morning and 2:00 in the afternoon respectively, with each ...

Embodiment 3

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

[0128] 1 Prepare 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 12.5% ​​decrease), the stone powder in the late stage feed of Hailan brown layer was reduced from 8.50% to 7.30%;

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

[0131] Mix 1.1 and 1.2 with ration raw materials (as shown in Table 9) to obtain a ration with a calcium content of 3.0%. After bagging, store in a dark and dry place for later use.

[0132] 2 Experimental design

[0133] 2.1 Test materials and grouping

[0134] In this experiment, a 70-week-old Hailan brown layer was selected as the experimental animal, and the average daily feed consumption per day was 120g / bird. They were fed at 8:00 am and 2:00 pm each day, with each repeated daily feed consumption Calculated based on the actual number of chick...

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Abstract

The invention relates to a method for improving egg-laying performance of hens at a later stage of egg laying. The method comprises the step: employing a dynamic feeding mode: feeding a ration formulain twice, feeding 1 / 3-2 / 5 of average daily feed consumption in the morning, and feeding 3 / 5-2 / 3 of average daily feed consumption in the afternoon. According to the method disclosed by the invention,at the later stage of egg laying of the hens, a feeding process of lowering the daily feed consumption, reducing low-calcium formula ration and dynamically feeding total daily feed consumption in twice is employed, the daily feed consumption and feed-egg ratio can be remarkably lowered, a shell-weight ratio and shell thickness are maintained, and the cost of feedstuff is effectively reduced on the basis of partially improving the egg-laying performance and egg quality; and by the method of application disclosed by the invention, the intake amount of stone powder and daily feed intake of chickens are reduced, the burden of gastrointestinal tracts of animals can be reduced, and the benefit level of the animals is increased.

Description

Technical field [0001] The invention relates to the field of animal nutrition research, in particular to a method for saving hen feed costs in late laying period, improving laying performance and improving eggshell quality. Background technique [0002] Late laying syndrome of laying hens is an important problem that plagues layer farmers. It is mainly manifested in the sharp drop in laying rate of laying hens, increase in feed-to-egg ratio, and lower egg quality (especially the decline in eggshell quality) after the peak laying peak. , Immunity decline, fatty liver, osteoporosis, poor feather quality and lower hatching rate of broiler-layer breeders, etc. This phenomenon is particularly serious in the production of local layer and breeder breeds, which greatly affects the efficiency of breeding. The industry proposes to extend the elimination age of layers and breeders (including broiler breeders and layer breeders) from 72 weeks in the traditional sense to 80 weeks or even to 1...

Claims

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Application Information

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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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