优质肉鸡繁育体系的效益评估

Economic Evaluation of Various Breeding Systems of Quality Meat-type Chicken

Systems analysis was used to evaluate the economic benefits of various breeding systems combined by three actual quality meat-type chicken lines. The results showed that the average discounted profits of 6 three-way crossbreeding systems was 92.04 times as much as that of pure-line breeding systems, and the average discounted profits of 6 two-way crossbreeding systems was 1.25 times as much as that of pure-line breeding systems. I×(II×III)_♀system and I×II_♀system had the highest total discounted profits and per commercial chicken profits in all three-way crossbreeding systems and in all two-way crossbreeding systems respectively. Sensitivity analysis showed that sensitivities of the price of commercial chicken, commercial chicken’s feed and meat quality assessment score were higher than that of the other economic parameters. Breeding expenses, price of unqualified eggs, feed-off cost in rearing period, and price of culling hen had a lower sensitivity.

Systems analysis was used to evaluate the economic benefits of various breeding systems combined by three actual quality meat-type chicken lines. The results showed that the average discounted profits of 6 three-way crossbreeding systems was 92.04 times as much as that of pure-line breeding systems, and the average discounted profits of 6 two-way crossbreeding systems was 1.25 times as much as that of pure-line breeding systems. I （Ⅱ × Ⅲ）, system and I × Ⅱ, system had the highest total discounted profits and per commercial chicken profits in all three-way crossbreeding systems and in all two-way crossbreeding systems respectively. Sensitivity analysis showed that sensitivities of the price of commercial chicken, commercial chicken＇s feed and meat quality assessment score were higher than that of the other economic parameters. Breeding expenses, price of unqualified eggs, feed-off cost in rearing period, and price of cull- ing hen had a lower sensitivity.