贵州省纳雍糯谷猪的生长发育测定

Growth and Development of Nayong Nuogu Pigs

选择健康纳雍糯谷猪的幼公猪11头、母猪9头，在相同的饲料和饲养管理条件下进行糯谷猪体重和体尺等生长发育特性的研究。经测定，平均日增重公猪为0．3427kg，母猪为0．3483kg。公猪的生长高峰期为5～6月龄，平均日增重可达0．382kg；母猪的生长高峰期在6～7月龄，平均日增重达0．380kg；此阶段体长、体高、胸围增长也较快。在8月龄前体重与月龄呈明显线性相关，生长曲线符合生物生长规律，绝对生长曲线呈正态分布，相对生长曲线随月龄下降，饲养期一般为10～14个月。屠宰率约74％，瘦肉率47％。研究表明：160—200日龄阶段是糯谷猪体重和部分器官生长发育较强烈的时期。

Healthy immature pigs （11 boars, 9 sows） were chosen and bred under the same forage and feeding management conditions to detect the growth and development of Nuogu pig. The average augmentation of daily body weight was 0. 3427 kg in boars, 0. 3483 kg in sows, respectively. The crest-time of growth was 5 - 6 months old in boars and 6 - 7 months old in sows, average daily augmentation of body weight was 0. 382 kg in boars and 0. 380 kg in sows in this period. Stem length, body height and chest circumference increased fast in the crest-time. There were linear correlation between body weight and age before 8 months old. Growth curve was consistent with the growth regularity of living being. The absolute growth curve was also consistent with Gaussian distribution. Relative growth curve decreased as the age increased. Generally speaking, breeding period was 10 - 14 months. Slaughter rate was 74% and lean meat rate was 47%. This study indicated that 160 -200 days was the more intensive period for body weight augmentation and some organs development of Nuogu pigs.