Journal of Veterinary Clinics (한국임상수의학회지)

The Korean Society of Veterinary Clinics (한국임상수의학회)
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Effect of Administering Recombinant Bovine Somatotropin to Breeding Cows on Weight Gain and Prevention of Diarrhea in Suckling Calves

번식우에 대한 rBST투여가 포유기 송아지의 비육과 설사 예방에 미치는 영향

  • 이경갑 (제주대학교 농과대학 수의학과) ;
  • 류경표 (제주대학교 농과대학 수의학과) ;
  • 이영재 (제주대학교 농과대학 수의학과) ;
  • 정종태 (제주대학교 농과대학 수의학과) ;
  • 김희석 (제주대학교 농과대학 수의학과) ;
  • 김남중 (LG화학 바이오텍연구소) ;
  • 장병선 (LG화학 바이오텍연구소)
  • Published : 1999.12.01
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Abstract

This study was carried out to investigate weight gain and prevention of diarrhea in suckling calves which were injected with recombinant bovine somatopropin (rBST). A total of 101 breeding cows were assigned to the six groups according to the administered dosage and injected time, respectively. Groups T-1, T-3, T-4 and T-6 were injected starting 1 week before calving and groups T-2 and T-5 were injected on the calving day. The six groups were injected five times at two week intervals. Groups T-1 and T-2 were injected with 250mg composite rBST, Group T-3 was injected with 375 mg composite rBST. Groups T-4 and T-5 were injected with 500mg composite rBST, And group T-6 was injected with 500mg rBST-S. The control group was not injected with BST. The groups injected with 500 mg BrST had a lower rate of morbidity from diarrhea than the control group or the groups injected with 250 mg rBST (T-1 and T-2). Weight gain was higher in group T-4 than in the control group or groups T-1 and T-2. In Korean Native Cattle, the total weight gain was greater in group T-4 than in the control group (p<0.05). In crossbred cows, total weight gain was the highest in group T-4, and the total weight gain rate was greater than in group T-4 and the control group (p<0.05). The results of the hematological values showed that injections of rBST did not affect the level of the RBC, TP and BUN in the breeding cows at 9 weeks after postpartum or the neonatal calves. The results of this study indicate that injecting breeding cows with 500 mg rBST before calving would be effective in the preventing of diarrhea and in increasing weight gain of calves from birth to weaning.

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References

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