title: Associations of prepartum body condition score with occurrence of clinical endometritis and resumption of postpartum ovarian activity in dairy cattle.
abstract: This study was performed to investigate the effect of periparturient body condition score on the occurrence of clinical endometritis and postpartum resumption of ovarian activity in dairy cows. Eighty-seven lactating Holstein cows, fed with a total mixed ration diet, were included into the study. Body condition scoring (using a 5-point scale with quarter-point divisions) was performed by the same investigator using the visual technique every 2 weeks, from 2 weeks before until 6 weeks after calving. Palpation of the reproductive tract and ultrasonographic assessment of ovaries for detection of corpus luteum using a rectal linear probe was also performed at 2, 4, and 6 weeks after calving. Cows with clinical endometritis had significantly lower body condition score (BCS) than normal cows at all weeks pre- and postcalving, and cows that did not ovulate until 45 days after calving had a significantly lower BCS pre- and postpartum. Cows that did not ovulate until 45 days after calving also lost more BCS from 2 weeks before to 4 weeks after calving. Besides, first ovulation after calving take occurred later in cows with clinical endometritis compared to normal cows (P < 0.05). In conclusion, low BCS is a risk factor for postpartum endometritis and delayed cyclicity in dairy cows. BCS loss from dry-off to early lactation and occurrence of clinical endometritis can significantly affect postpartum ovarian activity.
authors: Research Institute of Animal Embryo Technology, Shahrekord University, Shahrekord, 8818634141, Iran, kadivar.ali@gmail.com.
authors: Ali
authors: A
authors: Kadivar
authors: Mohammad Rahim
authors: MR
authors: Ahmadi
authors: Mahmood
authors: M
authors: Vatankhah
mesh_terms: D000818:Animals; D001823:Body Composition / Q000502:physiology*; D002417:Cattle; D002418:Cattle Diseases / Q000473:pathology*; D003338:Corpus Luteum / Q000502:physiology*; D004716:Endometritis / Q000473:pathology / Q000662:veterinary*; D004971:Estrus / Q000502:physiology*; D005260:Female; D007774:Lactation; D010060:Ovulation; D049590:Postpartum Period
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