雅南猪生长发育的研究 Ⅰ.整体、组织与器官的生长

A STUDY ON THE GROWTH AND DEVELOPMENT OF YANAN PIG Ⅰ. GROWTH OF WHOLE-BODY TISSUES AND ORGANS

雅南猪是优良地方猪种之一。应用Logistic生长模型Gompertz生长模型和异速生长方程对雅南猪整体的生长、组织与器官的生长进行了研究。结果表明:1.雅南猪后备公、母猪的增重高峰为4—5月龄,生长育肥猪的生长高峰为7—8月龄。用Gomportz生长模型估计,拐点年龄分别为161.5天,162.5天,270天;用Logistic生长模型估计,拐点年龄分别为98.6天,99.8天,131.4天。2.后备猪胴体中四种组织成份的早熟性顺位是骨—肉—脂—皮;内脏器官的早熟性顺位是肾—心—肺—肝—小肠—脾—胃—大肠;消化系统比生殖系统早熟。

Yanan Pig is one of the superior regional pig varieties,Three mathematical models of logistic,gompertz and allometry model are used to study the growth of whole-body, tissues and organs of Yanan Pig. The results are shown as follows: 1. Replacement males and females reach their growth summit at the age of 4-5 months, and finishing pigs, at 7-8 months. The turning points are at the age of 161.5, 162.5 and 270days by gompertz growth model and 98.6, 99.8 and 131.4 by logistic growth model respectively. 2. The maturing order of four rissues of replacement pig is bone-muscle-fat-skin; and that of internal organs is kidney-heart-lung-small intestine-spleen-stomach-large intestine. The digestive system maturies earlier than the reproductive system.