摘要
建立了畜群结构满足的方程组,通过解方程组得到畜群结构与畜群出栏率,进一步分析得出畜群出栏率与出栏畜龄P和母畜产羔率r有关。指出提高畜群的经济效益,必须提高畜群出栏率,降低出栏畜龄和提高母畜产羔率。
A group of equations was established in accordance with herd structure dynamics. These equations were used to obtain the herd structure and offtake rate. Further analysis showed that herd offtake rate is related with livestock offtake age and female reproduction rate. It is pointed out that to increase the economic benefit from the herd, the offtake rate must be increased, and to do this the livestock offtake age should be reduced and female reproduction rate increased.
出处
《草业学报》
CSCD
2004年第1期105-108,共4页
Acta Prataculturae Sinica
基金
国家自然科学基金重点资助项目(39630250)。
关键词
畜群结构
畜群出栏率
畜群经济效益
herd structure
herd offtake rate
herd economic benefit
