摘要： 对3头年龄为2～3岁的去势水牛,安装颈静脉血管瘘管,定时采血,用放射免疫法测定血浆中GH的水平.结果表明:水牛全天生长激素(GH)分泌的脉冲频率为1.143±0.06次/h,脉冲基线为14.467±0.46 ng/mL,脉冲高度为18.719±0.76 ng/mL,脉冲幅度为4.247±0.1 ng/mL;白天的脉冲基线显著高于夜间,脉冲频率、脉冲高度、脉冲幅度均高于夜间;春季和夏季夜间GH分泌的脉冲频率基本相同,其余3种参数春季均显著高于夏季.
关键词:
生长激素,
昼夜节律,
水牛
Abstract: Three castrate male water buffaloes were fed with hay in spring and rice straw in summer.Serial blood samples were collected from jugular catheters every fifteen minutes in the two periods of nine o.clock to twelve thirty in spring and twenty-one to zero thirty on the two seasons.Secret on profile of growth hormone(GH)in water buffalo was as following: The pulse frequency,baseline,height and amplitude was 1.143±0.06 no./h,14.467±0.46 ng/mL,18.719±0.76 ng/mL,41247±0.51 ng/mL,respectively.The concentration level of baseline in daytime was significantly higher than that in night.The pulse frequency in daytime were also higher than that in night and the pulse height in daytime was higher than the same item in night.The pulse amplitude was higher in daytime than in night.Compared the characteristics of GH secretion in different season,all the pulse baseline,height and amplitude fed with hay were significantly higher than those fed with rice straw.
Key words:
Growth hormone,
Diurnal rhytm,
Water buffalo
中图分类号:
武枫林, 刘为民, 张盛友, 毛鑫智. 水牛生长激素分泌特点的研究[J]. 华北农学报, 2002, 17(3): 135-139. doi: 10.3321/j.issn:1000-7091.2002.03.027.
WU Fenglin, LIU Weimin, ZHANG Shengyou, MAO Xinzhi. Characteristics of Growth Hormone Secretion in Water Buffalo[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2002, 17(3): 135-139. doi: 10.3321/j.issn:1000-7091.2002.03.027.