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Method for breeding high-low abdominal fat broiler strains
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A technique for strain and abdominal fat, applied in the field of animal breeding
Inactive Publication Date: 2017-03-15
NORTHEAST AGRICULTURAL UNIVERSITY
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Problems solved by technology
So far, there is no effective method for broiler breeding of high and low abdominal fat
Method used
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Embodiment 1
[0029] The present embodiment provides a kind of breeding method of high and low abdominal fat broiler strain, comprises the following steps:
[0030] 1) The core group breeding chickens are hatched in two batches every year. The cocks of the first batch are all slaughtered for the determination of the abdominal fat content, and a part of the second batch of cocks is used for the determination of the abdominal fat content, and the remaining part is reserved for seed;
[0031] 2) When the chicks are hatched, the weak chicks are eliminated first, and the healthy chicks are sexed, and each chick is given a wing number, which can reflect the individual strain, family information and gender;
[0032] 3) When the chicks grow to 5 weeks of age, the individuals with wrong sex identification at birth are eliminated;
[0033] 4) All cocks are free to feed when they are 0-7 weeks old, and they start to restrict feeding after 7 weeks of age, and the hens are free to eat food in the first ...
Embodiment 2
[0048] Set up a basic group of white-feathered broiler chickens. On the basis of the basic group, use the closed group breeding method to select the abdominal fat content of the chickens. The low abdominal fat strains are selected from families whose average abdominal fat rate is below the average value of the group. For high-abdominal abdominal fat strains, the individual of the family with an average abdominal fat rate above the group average value was selected for breeding. After 4 generations of breeding, taking into account both body weight and fecundity traits, the abdominal fat rate of low-fat chickens was significantly higher. Lower than the high-fat system.
Embodiment 3
[0050] The high-fat line and low-fat line obtained in Example 2 continue to be selected according to the abdominal fat content. After 18 generations of breeding, the average abdominal fat rate of the low-fat line chicken is 0.61%, and the high-fat line chicken's The average abdominal fat rate is 5.34%, and the abdominal fat rate of high-fat broilers is 8.8 times that of low-fat broilers.
[0051] The basic group of white-feathered broiler chickens we established in 1996 is based on the basic group, and the abdominal fat content of the chickens is selected by the closed group breeding method. The specific method is to form 25-35 chickens for each line in each generation. Each family consists of a male-to-female ratio of 1:4. Two batches of hatching are carried out every year. The first batch of hatched roosters are all slaughtered at the age of 7 weeks. The abdominal fat weight of each individual is measured, and the abdominal fat rate is calculated by dividing the abdominal fa...
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Abstract
The invention discloses a method for breeding high-low abdominal fatbroiler strains. The method comprises the following steps that a white featherbroiler underlying group is established, breeding is performed based on the underlying group according to the abdominal fat content of broilers and by utilizing a closed flock breeding method, a low abdominal fat strain is a reserved family individual with the abdominal fat rate mean value lower than a mean value of the group strain, a high abdominal fat strain is a reserved family individual with the abdominal fat rate mean value higher than the mean value of the group strain, and low-fat-strain broilers with the abdominal fat rate remarkably lower than a high fat strain are obtained through 4 generations of breeding. The abdominal fat content of the bred low-fat broiler strain of 49 days old bred by adopting the method is remarkably lower than the abdominal fat content of existing commodity broilers, and a high-quality material is provided with breeding of low-fat broiler specialized strain.
Description
technical field [0001] The invention belongs to the technical field of animal breeding, and in particular relates to a method for breeding broiler chicken strains with high and low belly fat. Background technique [0002] Baiyukuai large-scale broiler is the main body of my country's chicken production, and its product output accounts for 60% of my country's chicken product output. However, my country has no germplasm resources of white feather fast large broiler chickens with independent intellectual property rights, and its production is completely dependent on foreign germplasm resources. The long-term introduction has not only seriously affected the maximization of the economic benefits of my country's broiler industry, but also brought huge hidden dangers to the biological safety of my country's poultry. Cultivating broiler germplasm resources with my country's independent intellectual property rights, and then establishing a broiler matching system suitable for my cou...
Claims
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