A seed production method for high-yield and grain-saving laying hens

Abstract

The invention relates to a seed production method of high-yield and grain-saving laying hens, comprising step 1: crossing Jianghan chickens and Babcock chickens to obtain D-series chickens, and forming the first female parent through selection; step 2: mixing Babo chickens The C-series chickens were obtained by crossing Nat Heikang chickens with Hongshan chickens. After selection, the slow-feather pure and gene individuals were selected to form the first male parent; Step 3: The male parent of the court bantam chicken and the female Jianghan chicken This hybridization produces E-line chickens. After selection and breeding, individuals with fast feathers, recessive white feathers and short legs are selected to form the terminal male parent; Step 4: Cross the first male parent with the first female parent to produce parental female parent ; Step 5: Crossing the parental female parent with the terminal male parent to obtain a commercial generation. By selecting a suitable matching line, we can obtain commercial chickens with good body shape and appearance, stable reproductive performance, strong disease resistance, high survival rate, high egg production rate, early laying, high egg quality, food saving, and docile temperament.

Description

technical field [0001] The invention relates to a seed production method of high-yield and grain-saving laying hens, belonging to the field of poultry genetics and breeding. Background technique [0002] Eggs are rich in cholesterol and rich in nutrition. An egg weighs about 50 grams, contains 6-7 grams of protein and 5-6 grams of fat. The amino acid ratio of egg protein is very suitable for the physiological needs of the human body, easy to be absorbed by the body, the utilization rate is as high as 98%, and the nutritional value is very high. It is one of the foods that humans often eat. However, at present, domestic hen species have a low egg production, resulting in a state in which the number of eggs is in short supply. Even if a large amount of feed is fed, it is difficult to increase the egg production, which shows that the current chickens have the disadvantage of insufficient nutrient conversion and absorption; the layer hen species that currently meet the market de...

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Problems solved by technology

However, at present, domestic hen species have a low egg production, resulting in a state in which the number of eggs is in short supply. Even if a large amount of feed is fed, it is difficult to increase the egg production, which shows that the current chickens have the disadvantage of insufficient nutrient conversion and absorption; the layer hen species that currently meet the market demand Many of them improve their production and reproductive performance through simple hybridization between several breeds, resulting in unstable quality and traits of commercial laying hens, especially the serious separation of traits such as feather color and shank color; low reproductive performance and low survival rate , the egg production rate of the group is not high, and the difference in growth rate and weight is relatively large; and with the rapid development of my country's social economy, the national poultry breeding technology has made rapid progress, and the production of the domestic laying hen market has undergone tremendous changes. The demand for the quality and appearance of eggs and chickens has also undergone major changes, and the pursuit of taste, health and safety

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