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Relationship between BCS during Prepartum, Calving and Postpartum Periods and Fertility of Korean Brown Cattle  

Choi, In-Su (Laboratory of Theriogenology, College of Veterinary Medicine, Chungbuk National University)
Kim, Ui-Hyung (Laboratory of Theriogenology, College of Veterinary Medicine, Chungbuk National University)
Kang, Hyun-Gu (Laboratory of Theriogenology, College of Veterinary Medicine, Chungbuk National University)
Kim, Ill-Hwa (Laboratory of Theriogenology, College of Veterinary Medicine, Chungbuk National University)
Publication Information
Journal of Veterinary Clinics / v.25, no.4, 2008 , pp. 280-285 More about this Journal
Abstract
This study evaluated the correlation between the body condition score (BCS) during prepartum, calving and postpartum periods and the reproductive performance of Korean brown cattle. The BCSs of 33 cows who underwent 73 calvings over a two and a half period [the parities of the cows ranged from 1 to 4 ($mean{\pm}SD,\;2.0{\pm}0.9$)] were scored at months 2 and 1 prepartum, calving, and every month postpartum until month 7. A marked prepartum loss of BCS in the month preceding calving was noted. The correlations between the interval from calving to conception and the month 1 prepartum, calving and months 1 and 2 postpartum BCSs were analyzed by Pearson correlation analysis. The correlation between the interval from calving to conception and the prepartum body condition loss was also evaluated. The interval from calving to conception correlated positively with the month 1 prepartum BCS (r = 0.389, P = 0.0007) and the prepartum body condition loss (r = 0.488, P < 0.0001) but did not correlate significantly with the BCS at calving (r=-0.070, P=0.56) or months 1 (r=0.107, P=0.37) or 2 (r=0.102, P=0.39) postpartum. The prepartum body condition loss correlated positively with the month 1 prepartum BCS (r=0.587, P<0.0001). In conclusion, the month 1 prepartum BCS may be a good criterion for predicting subsequent reproductive performance. Moreover, the prevention of obesity and/or excessive prepartum body condition loss may result in higher fertility in Korean brown cattle.
Keywords
body condition score; calving; Korean brown cattle; pre- and postpartum;
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