Method for breeding novel strain of anurous laying hens
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A breeding method and a technology for new strains, which are applied in the field of poultry breeding, can solve the problems that are not suitable for the production needs of modern laying broilers, the number of eggs produced by the hens is low, and the growth rate is slow, and the meat production rate and the number of eggs are high. , the effect of fast growth
Inactive Publication Date: 2013-09-25
JIANGSU INST OF POULTRY SCI
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Problems solved by technology
However, the chicken has low egg production and slow growth rate, which is not suitable for the production needs of modern egg broilers; and no commercial tailless chicken strain has been cultivated at home and abroad.
Method used
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Embodiment 1
[0013] The breeding method of the new strain of laying hens without tails in the present embodiment is carried out in the following steps:
[0014] (1) select the turkey, self-propagating group;
[0015] (2) Introduce high-yield laying hen bloodlines in the above-mentioned multiplication offspring; select tailless male and female hens for cross-crossing among the cross-crossing offspring; select tailless male and female hens whose appearance characteristics meet the breeding goals among the cross-crossing offspring ;
[0016] (3) Carry out test crossing respectively to the above-mentioned selected tailless male and female chickens with tailed chickens, identify, and screen out male and female chickens that are homozygous for the tailless gene, self-propagating group;
[0017] (4) Carry out family selection or family selection and individual selection to the tailless gene homozygous male and hen, improve the uniformity of its body shape and appearance and egg production perfor...
Embodiment 2
[0020] The cultivation method of the new strain of the new strain of laying hen without tail in the present embodiment, this cultivation method is carried out according to the following steps:
[0021] (1) Select mutant roosters and hens from laying hen resources, and self-propagating groups;
[0022] (2) Select tailless roosters and hens from the above-mentioned multiplication progeny, and introduce high-yield laying hen blood; select tailless male and female hens for cross-crossing among the hybrid offspring; Male and female hens whose characteristics meet the breeding objectives;
[0023] (3) Carry out test crossing respectively to the above-mentioned selected tailless male and female chickens with tailed chickens, identify, and screen out male and female chickens that are homozygous for the tailless gene, self-propagating group;
[0024] (4) Carry out family selection or family selection and individual selection to the above-mentioned tailless gene homozygous male and hen...
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Abstract
The invention relates to a method for breeding a novel strain of anurous laying hens. The method includes steps of (1), selecting mutant anurous cocks and hens from indigenous chicken or laying hen resources and enabling the cocks and hens to perform self-reproduction to expand propagation; (2), selecting anurous cocks and hens from descendents of the expanded propagation, introducing blood relationship of high-yield laying hens into the anurous cocks and hens, selecting anurous cocks and hens in hybrid descendents, enabling the anurous cocks and hens to perform cross-breeding, and selectively reserving anurous cocks and hens in cross-bred descendents; (3), performing test-cross on the reserved anurous cocks and hens, evaluating the anurous cocks and hens and screening individual cocks and hens which are anurous genetic homozygous and enabling the individual cocks and hens to perform self-reproduction to expand propagation; (4), selecting the anurous genetic homozygous cocks and hens and improving the bodily form and appearance uniformity and the laying performance of the anurous genetic homozygous cocks and hens; (5), repeating executing the steps (3) and (4) until the novel strain of laying hens with the anurous character capable of being stably inherited. Appearance features of the anurous cocks and hens in cross-bred descendents meet requirements of breeding objectives. The method has the advantages that the bred novel strain of anurous laying hens is fast in growing speed and high in dressing percentage and egg numbers, and requirements of modern laying hen and broiler production can be met.
Description
technical field [0001] The invention belongs to the technical field of poultry breeding, and in particular relates to a method for cultivating new strains of tailless laying hens. Background technique [0002] The so-called tailless chicken refers to a chicken that lacks tail vertebrae, tail brown bones, or both. Therefore, tailless chickens have no tail feathers, sickle feathers, and tail fat glands. Tailless chickens can be observed in many chicken flocks. Among the many local chicken breeds in our country, the tailless chicken is the tailless chicken. However, the chicken has low egg production and slow growth rate, which is not suitable for the production needs of modern egg broilers; and no commercial tailless chicken strain has been cultivated at home and abroad. The tailless trait is an autosomal single-gene dominant genetic trait. Due to the lack of tail bones, the tailless chicken has a high meat yield, but the tailless gene has an additive effect on the fertilizat...
Claims
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Application Information
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