Factors affectingin-vivo fertility of crossbred Egyptian - Italian buffalo semen

作     者：GA El-Sisy KGhM Mahmoud AAE El-sokary MF Nawito YF Ahmed 

作者机构：Department of Animal Reproduction and A.I.National Research CenterDokkiGizaEgypt General Organization for Veterinary ServicesDokkiEgypt 

出 版 物：《Asian pacific Journal of Reproduction》 (亚太生殖杂志（英文版）)

年 卷 期：2017年第6卷第6期

页      面：264-267页

学科分类：0710[理学-生物学] 1002[医学-临床医学] 0905[农学-畜牧学] 0906[农学-兽医学] 0901[农学-作物学] 100214[医学-肿瘤学] 0902[农学-园艺学] 10[医学] 

基　　金：Abbasia Artificial Insemination Center National Research Centre, NRC, (1102101) National Research Centre, NRC 

主　　题：Artificial insemination Pregnancy rate Egyptian-Italian crossbred Buffalo bull 

摘      要：Objective:To assess the effect of region, season and year of insemination onin-vivo fertility of Italian-Egyptian crossbred buffalo ***: A total number of 4799 female buffaloes were inseminated by frozen semen with at least 50% post-thaw motility of Egyptian-Italian crossbred bulls in three localities in Delta, lower Egypt (El-Behira, El-Sharkia and Damietta) during the period of 2013, 2014 and 2015. The pregnancy rate after two months was evaluated during the four ***:The rate of pregnancy was significantly (P0.0001) differ among the three localities. The effect of year of insemination on pregnancy rate was significantly higher during 2014 and 2015 than 2013 in El-Sharkia and El-Behira. But in Damietta, the rate of pregnancy was significantly higher in 2014 than 2013 and 2015. There were no significant differences among seasons in El-Behira and Damietta governorates but there was significant (P0.05) differences in pregnancy rate in El-Sharkia. It was higher in summer, spring and autumn than in ***:Localities, year of insemination and season of the year have effects on fertility of crossbred Egyptian-Italian buffalo semen.