不同环境下藏獒幼犬生长发育规律的初步研究

选择1月龄幼犬60条(公、母各半),分别在高海拔地区(1 500 m)和平原地区进行试养,饲养管理水平相同,通过测定1-10月龄幼犬的体质量、体尺等指标对2个地区幼犬的生长发育指标进行了比较.结果表明:3、4月龄高海拔地区的幼犬体质量比平原地区分别高5.33、.7 g,相对生长率比平原地区高3.6%和3.5%,差异达极显著水平(P<0.01).体尺发育规律分析发现:1-6月龄幼犬的体长生长速度高于胸围,8-10月龄胸围、体高的生长速度远大于体长.据此认为,环境对藏獒幼犬体质量、体高、体长的影响显著.

Growth pattern of young Tibetan Mastiff in different environments

Sixty young Tibet Mastiff(half in each sex) were fed under the same raising conditions for 10 months in the plain and in the elevation 1 500 meters above sea level,then the body weights were measured in the first day of each month.The results showed that there was a significant difference(P<0.01) in growth performance,the young Tibet Mastiff's growths are faster in the high mountains during the third and the fourth month than in the plain.It was indicated that the changing environment play an important role in the growth of the yong Tibetan Mastiff.