Effect of Injecting GRF gene Plasmid on Growth Performance in Calves

Abstract

Abstract: To study the effect of injecting GRF gene plasmid on growth performance in calves, thirty-six heads of Simmental crossbred calves which average body weigh was about 102kg were randomly divided into four groups equally and injected the 5ml of 0.9% NaCl solution respectively containing 0mg，3.37mg, 6.74mg, 10.11mg of gene plasmid. The index ,including of average daily gain(ADG), the feed conversion rate（FCR） and the Growth Hormone（GH） level in the blood ,were regularly determined in experimental period. The results showed each of treatment group all had positive effect for enhancing ADG and FCR. Group of 6.74mg was the best, in which ADG and FCR were more 17.33%(P<0.01) and 18.05%(P<0.01) respectively than control group. The GRF gene plasmid residue didn’t be found in a few of organs injected calves after slaughter.

CLC Number:

S813.24

Zhang Liyu, Sun Baozhong, Wang Min, Jia Entang, Nie He, Meng Qingyong, Chong Jinghua. Effect of Injecting GRF gene Plasmid on Growth Performance in Calves[J]. Chinese Agricultural Science Bulletin, 2006, 22(9): 10-10.

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