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KMID : 1094020150320020168
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Journal of Veterinary Clinics
2015 Volume.32 No. 2 p.168 ~ p.173
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Postpartum Reproductive Tract Recovery and Prevalence of Health Problems in Dairy Cows
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Jeong Jae-Kwan
Choi In-Soo
Kang Hyun-Gu
Kim Ill-Hwa
Jung Young-Hun
Hur Tai-Young
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Abstract
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This study estimated the degree of uterine inflammation and resumption of ovarian cyclicity in postpartumdairy cows. In addition, the prevalence of health problems during calving and the postpartum period was investigated. A total of 224 Holstein dairy cows from four dairy farms in Chungcheong Province were used for the study. Uterinedischarge was scored on a 0 to 5 rank scale (metricheck score) using a metricheck instrument from 1 to 8 weekspostpartum and uterine cytology (neutrophil level) was examined at 4, 6 and 8 weeks postpartum to evaluate uterineinflammation. Resumption of ovarian cyclicity was evaluated based on progesterone analysis (≥ 1 ng/mL) at 4, 6 and8 weeks postpartum. Postpartum disorders were diagnosed by veterinarians in the research team. The metricheck scoredecreased linearly (p < 0.0001) from weeks 1 (3.4 ± 0.1) to 4 (2.0 ± 0.1) postpartum, and then remained at that levelthrough week 8 postpartum (1.6 ± 0.1, p > 0.05). The neutrophil levels determined by uterine cytology assays alsodecreased (p < 0.0001) from week 4 (22.3 ± 1.8%) to 6 (12.1 ± 1.4%) postpartum, and then remained at that levelthrough week 8 postpartum (9.2 ± 1.4%, p > 0.05). The proportion of cows exhibiting the ovarian cyclicity increasedlinearly (p < 0.0001) from weeks 2 (12.1%) to 8 (74.3%) postpartum. The prevalence of dystocia and retained placentawere 20.5% and 30.4%, respectively. The prevalence of ketosis, milk fever, abomasal displacement, septicemic metritis,endometritis, subclinical endometritis, pyometra, and ovarian cysts were 18.8%, 3.6%, 4.0%, 36.2%, 29.5%, 17.0%,4.5%, and 14.7%, respectively. The prevalence of digestive problems and mastitis were 5.4% and 9.6%, respectively. The prevalence of culling and death were 4.0% and 3.6%, respectively. The prevalence of dystocia, retained placenta,septicemic metritis, endometritis, ovarian cysts, digestive problems, mastitis, and culling differed among farms (p < 0.05to 0.01). In conclusion, proper examinations for uterine inflammation and ovarian cyclicity during 4 to 8 weekspostpartum are useful clinical tools to maintain herd reproductive health. Dystocia, retained placenta, septicemic metritis,and endometritis were predominant disorders in dairy cows of the survey area.
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KEYWORD
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dairy cows, uterine inflammation, postpartum cyclicity, health problems
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