对奶牛妊娠至90天不同阶段妊娠丢失发生率的荟萃分析。
Meta-analysis of the incidence of pregnancy losses in dairy cows at different stages to 90 days of gestation.
作者信息
Albaaj A, Durocher J, LeBlanc S J, Dufour S
机构信息
Département de pathologie et microbiologie, Faculté de médecine vétérinaire, Université de Montréal, C. P. 5000, Saint-Hyacinthe, QC, Canada, J2S 7C6.
Lactanet, 555, boul. Des Anciens-Combattants, Ste-Anne-de-Bellevue, Québec, Canada, H9X 3R4.
出版信息
JDS Commun. 2022 Nov 18;4(2):144-148. doi: 10.3168/jdsc.2022-0278. eCollection 2023 Mar.
Pregnancy losses are a biological challenge and economically important in dairy herds. A meta-analysis was conducted to quantify losses in 4 periods from 19 to 90 d of pregnancy corresponding to the physiological development of gestation in dairy cows. A total of 19,723 diagnostic records from 46 studies were included. Pregnancy losses averaged 27%, 13%, 7%, and 2% in the early embryonic (19 to 32 d), late embryonic (30 to 45 d), early fetal (45 to 60 d), and later fetal (60 to 90 d) stages. These results provide a formal synthesis of the incidence of pregnancy losses in dairy cows.
妊娠损失是奶牛养殖中的一项生物学挑战，且在经济上具有重要意义。进行了一项荟萃分析，以量化奶牛妊娠19至90天期间4个阶段的损失情况，这些阶段与妊娠期的生理发育相对应。共纳入了来自46项研究的19723条诊断记录。在早期胚胎期（19至32天）、晚期胚胎期（30至45天）、早期胎儿期（45至60天）和晚期胎儿期（60至90天），妊娠损失平均分别为27%、13%、7%和2%。这些结果正式综合了奶牛妊娠损失的发生率。
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