select 14 QinChuan cattles at random (1.5 year old female and male cattle 4 respectively; 2.0 year old female and male cattle 3 respectively). According to sex, we divide them into two groups. Then we measure their body length, height at wither, breast depth, breast circumstance, hip with and weight, and analysis them. The results show: At 1.5 years old, the hormone level of GH and INS appear difference unremarkably (p>0.05). At 2.0 years old, the hormone level of GH and INS appear difference remarkably (p<0.05). And with the age growing, the GH level appear to descend while INS level appear to ascend. INS and GH level present negative correlation clearly (p>0.05). Analyzing the body composition index, we discovery at 2.0 year old QinChuan Cattle’ breast circumstance is wider , hip grows clearly, body growth rate is relatively slow. But growth rate of muscle is relatively quick. It correspond with the meat cattle growth rules and middle maturity or late maturity characters of Qinchuan Cattle. Comparing the actual weight with partition standard of economic performance, we discovery Qinchuan Catttle still belongs to beef and farm breed. But with present selecting and cultivating present years, Qinchuan Cattle’s weight add greatly.
Meng YanZan LinsenLiang Hongwei Zhu Guiming
. The Measure of GH and INS and Analysis of Body Measurement
and Weight of Qinchuan Cattle[J]. Chinese Agricultural Science Bulletin, 2004
, 20(5)
: 9
-9
.
DOI: 10.11924/j.issn.1000-6850.040509
[1] 周光学等. 生长激素对猪日增重及内脏器官增重的影响. 中国动物保健. 2000.6(16)
[2] Lee C Y.Hunt D W ,Gray S L .et al .Secreory patterns of growth hormone and isuline-like growth factor-I during perpubertal period in intact and castrste male cattle [J].Domest Anim Endocrinol ,1991,8(4):481-489
[3]李永禄.养牛学[M].北京:中国农业出版社,1987
[4]养牛学.王根林主编.中国农业出版社
[5] 昝林森等. 秦川牛胴体性状的研究. 中国农学通报. 2000.增刊 .21-25