Sudano Mateus José, Crespilho André Maciel, Fernandes Claudia Barbosa, Junior Alicio Martins, Papa Frederico Ozanam, Rodrigues Josemar, Machado Rui, Landim-Alvarenga Fernanda Da Cruz
Department of Animal Reproduction and Veterinary Radiology, School of Veterinary Medicine and Animal Science, São Paulo State University, 18618-000 Botucatu, SP, Brazil.
Vet Med Int. 2011 Apr 14;2011:436381. doi: 10.4061/2011/436381.
The objective of this experiment was to test in vitro embryo production (IVP) as a tool to estimate fertility performance in zebu bulls using Bayesian inference statistics. Oocytes were matured and fertilized in vitro using sperm cells from three different Zebu bulls (V, T, and G). The three bulls presented similar results with regard to pronuclear formation and blastocyst formation rates. However, the cleavage rates were different between bulls. The estimated conception rates based on combined data of cleavage and blastocyst formation were very similar to the true conception rates observed for the same bulls after a fixed-time artificial insemination program. Moreover, even when we used cleavage rate data only or blastocyst formation data only, the estimated conception rates were still close to the true conception rates. We conclude that Bayesian inference is an effective statistical procedure to estimate in vivo bull fertility using data from IVP.
本实验的目的是使用贝叶斯推理统计方法,将体外胚胎生产(IVP)作为一种评估瘤牛公牛繁殖性能的工具进行测试。使用来自三头不同瘤牛公牛(V、T和G)的精子细胞,使卵母细胞在体外成熟并受精。在原核形成和囊胚形成率方面,这三头公牛呈现出相似的结果。然而,公牛之间的卵裂率有所不同。基于卵裂和囊胚形成的综合数据估算的受孕率,与在定时人工授精程序后观察到的同一公牛的真实受孕率非常相似。此外,即使仅使用卵裂率数据或仅使用囊胚形成数据,估算的受孕率仍接近真实受孕率。我们得出结论,贝叶斯推理是一种利用IVP数据估算公牛体内生育能力的有效统计方法。