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KMID : 1023620060300030195
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Reproductive and Developmental Biology
2006 Volume.30 No. 3 p.195 ~ p.199
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Effect of Intra-Uterine Infusion of Lipopolysaccharides on Reproductive Performance in Dairy Cows with Retained Placenta
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Baek Kwang-Soo
Park Seong-Jai
Lee Wang-Sik
Kim Hyeon-Shup
Ki Kwang-Seok
Ahn Byeong-Seog
Suh Guk-Hyun
Kim Tae-II
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Abstract
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This study was carried out to investigate the effect intra-uterine infusion of lipopolysaccharides(LPS) on the reproductive performance of dairy cows with retained placenta, The LPS isolated from Bacteroids helcogenes and Fusobacterium varium was injected at the rate of 100 with 30 ml of phospahte buffer saline in each cow(n=33) at day 20 postpartum. Twelve cows with retained placenta were not heated with LPS and served as a control. Conception rate after first service was 0% and 33,3% for control and LPS groups, respectively. Service period was days for control and LPS groups, respectively(p<0.05). Services per conception was for control and LPS groups, respectively(p<0.05). In conclusion, intra-uterine infusion of LPS in cows with retained placenta can reduce the service period and services per conception. Reduced service period can improve the dairy farm profitability by decreasing cost un feeding and management of cows.
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KEYWORD
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Dairy cow, Lipopolysaccharides, Retained placenta, Reproductive performance
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