摘要
为了研究内蒙古白绒山羊生长发育的特点,试验将内蒙古白绒山羊1998—2011年的体重记录,分为完整(出生重到7岁体重)和部分(出生重到2岁体重)资料,再分为群体平均水平和群体水平,利用常用的Logistic、Gompertz、Von Bertalanffy和Mitscherlich生长曲线模型对白绒山羊的生长进行非线性回归拟合。结果表明:在部分资料群体平均水平下,以Mitscherlich模型对绒山羊早期生长发育的拟合效果最好;Von Bertalanffy计算的最大日增重为231 g,拐点体重为10.187 6 kg,拐点日龄为50 d。说明应在此期间进行早期选育和饲养管理。
To study the growth and development characteristics of Inner Mongolia white cashmere goats, the records of weight performance for Inner Mongolia white cashmere goats from 1998 to 2011 were used in the test. The materials were divided into complete data（ from birth weight to weight at the age of 7 years）and partial data（ from birth weight to weight at the age of 2 years）, and then were divided into the group average levels and group levels. Four kinds of common nonlinear regression growth models including Logistic, Gompertz, Von Bertalanffy and Mitscherlich models, were used to fit the growth of white cashmere goats, respectively. The results showed that under the group average levels in the partial data, the fitting effect for early growth and development of the white cashmere goats was best using Mitscherlich model; the maximum daily weight gain calculated by Van Bertalanffy model was 231 g, and the body weight at the inflection point was 10. 187 6 kg, and the day of age at the inflection point was 50 d. The results indicate that early breeding and feeding management should be carried out during this period.
出处
《黑龙江畜牧兽医》
CAS
北大核心
2014年第8期43-46,共4页
Heilongjiang Animal Science And veterinary Medicine
基金
国家绒毛用羊现代农业产业技术体系项目(CARS-40-05)
国家公益性行业(农业)科研专项(20130305903
201003019)
内蒙古科技计划项目(20110715)
内蒙古农业大学职业技术学院应用技术研究基金项目(2011YJ0202)
