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Selective breeding method by comprehensive selection indexes of resistance of Eimeria tenella of chickens

A technology of comprehensive selection index and Eimeria coccidiosis, applied in animal husbandry and other fields, can solve problems such as drug residues, drug resistance in chicken flocks, and reduce the safety and quality of chicken products, achieving good results and reducing labor intensity , significant effects associated with

Inactive Publication Date: 2015-04-22
YANGZHOU UNIV
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Problems solved by technology

For a long time, the main means of controlling coccidiosis in chickens is the use of antibiotics and chemical drugs. Although the prevention and control of coccidiosis in chickens has benefited from these drugs, problems such as drug resistance of chickens have also arisen at the same time
In addition, the use of antibiotics and chemical drugs will eventually cause drug residues in eggs and chicken, reducing the safety and quality of chicken products
At present, there is no relevant research report on breeding methods for resistance to Eimeria tenella in chickens

Method used

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  • Selective breeding method by comprehensive selection indexes of resistance of Eimeria tenella of chickens
  • Selective breeding method by comprehensive selection indexes of resistance of Eimeria tenella of chickens
  • Selective breeding method by comprehensive selection indexes of resistance of Eimeria tenella of chickens

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specific Embodiment approach 1

[0035] The specific embodiment 1, determination of Eimeria tenenia sporulated oocyst challenge dose

[0036] In May 2010, 60 1-day-old Jinghai yellow chickens were purchased from Jiangsu Haimen Group, and they were raised in coccidia-free cages (single-cage breeding) sterilized by gasoline blowtorch flames before landing. The feed used did not contain any coccidia and Anti-coccidian active drugs were randomly divided into 3 groups of 20 chickens in each group at the age of 30 days. Each chicken in the first group was fed with 20,000 chickens, 25,000 chickens in the second group, and 30,000 tender Emerald balls in the third group. The sporulated oocysts, within 0-9 days after the challenge, the chickens in the third group died due to coccidiosis, and the mortality rate was 25.0%, while the chickens in the first and second groups did not die. To determine the optimal survival dose of 25,000 per bird.

[0037] 2. Screening and determination of effective coccidial resistance indi...

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Abstract

The invention relates to the field of disease-resistant breeding of poultry, in particular to a selective breeding method by comprehensive selection indexes of resistance of Eimeria tenella of chickens. The selective breeding method includes feeding a certain quantity of eimeria tenella spore oocysts of each chicken some-day old, measuring incremental weight within 3-5 days after infection and concentration of CAT (catalase), SOD (superoxide dismutase), GSH-Px (glutathione peroxidase), MDA (malondialdehyde) and IFN-gamma (interferon-gamma) in blood plasma in eighth day after infection, converting the six indexes into standard Z scores, and substituting into a comprehensive selection index formula to calculate comprehensive selection index values of each chicken, and selecting to reserve resistant chicken individuals according to the values.

Description

technical field [0001] The invention relates to the field of poultry breeding, in particular to a selective breeding method for establishing a comprehensive selection index for Eimeria tenella resistance and screening resistant chicken individuals. Background technique [0002] Chicken coccidiosis is an epidemic acute parasitic disease caused by one or more coccidiosis invading the intestinal epithelial cells of chickens, among which Eimeria tenella is the most serious. The lethality and morbidity rate of 35-60-day-old young chickens and 10-30-day-old chicks is as high as 80%. The sick chicken's ability to absorb nutrients is reduced, its growth is greatly affected, and it will not recover for a long time. According to statistics, the economic loss of the poultry industry in the United States due to coccidiosis exceeds US$1.5 billion per year, 74% of which are caused by subclinical chicken growth retardation and decreased feed utilization, and 24% are caused by increased ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K67/02
Inventor 戴国俊孙明明尉浩华林雨鑫孙大辉王金玉张根喜谢恺舟侍苗苗王成丽
Owner YANGZHOU UNIV
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