A meta-analysis of the effects of synchronization protocols applied to sheep in Turkey on pregnancy rates during breeding and non-breeding seasons.

Autor: Arikan MS; Department of Animal Health Economics and Management, Faculty of Veterinary Medicine, Fırat University, Elazıg, Turkey., Mat B; Department of Animal Health Economics and Management, Faculty of Veterinary Medicine, Selçuk University, Konya, Turkey., Alkan H; Department of Obstetrics and Gynaecology, Faculty of Veterinary Medicine, Selcuk University, Konya, Turkey., Çevrimli MB; Department of Animal Health Economics and Management, Faculty of Veterinary Medicine, Selçuk University, Konya, Turkey., Akin AC; Department of Animal Health Economics and Management, Faculty of Veterinary Medicine, Mehmet Akif Ersoy University, Burdur, Turkey., Şahin TS; Department of Animal Health Economics and Management, Faculty of Veterinary Medicine, Ankara University, Ankara, Turkey., Tekindal MA; Department of Biostatistics, Faculty of Medicine, İzmir Katip Çelebi University, İzmir, Turkey.
Jazyk: angličtina
Zdroj: Veterinary medicine and science [Vet Med Sci] 2021 Nov; Vol. 7 (6), pp. 2280-2289. Date of Electronic Publication: 2021 Aug 17.
DOI: 10.1002/vms3.610
Abstrakt: This study aimed to determine common pregnancy rates and effect sizes with meta-analysis of studies investigating the effect of different synchronization protocols applied to sheep during breeding and non-breeding seasons on pregnancy rates. Common pregnancy rates were estimated by coalescing pregnancy rates of studies performed independently, and heterogeneity between the studies was investigated. The meta-analysis included 24 studies that determined pregnancy rates in 78 different groups consisting of 1934 sheep with five different synchronization protocols in Turkey between 2001 and 2020. Among the different synchronization methods, the P4+PMSG group (90.37%) during the breeding season and P4+PGF2α (69.77%) and P4 (68.75%) groups during the non-breeding season showed the highest pregnancy rate. Also, the effect size of P4+PMSG application during the breeding season was calculated as 0.934 (95% confidence interval: 0.901-0.967), and the effect size of P4+PGF2α application during the non-breeding season was calculated as 0.709 (95% confidence interval: 0.406-1.013). To conclude, the combination of P4+PMSG during the breeding season and progestogen and other hormone applications during the non-breeding season are the most effective methods for estrus synchronization and for achieving the desired pregnancy rates.
(© 2021 The Authors. Veterinary Medicine and Science published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
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