الفهرس 
Non genetic FactorsOnly 14 pages are availabe for public view
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Abstract
Data of the present study were obtained from Egyptian buffaloes herd, kept at Mehalet Mousa farm, Kafer El sheihk, belonging to Animal Research Institute, Dokki, Cairo, Egypt, during the period from 1995 to 2015.A total number of lactations records, buffalos, bulls and dams were 2763, 357, 147 and 183, respectively. Sires with less than 5 daughters were excluded. Abnormal records affected by diseases or by disorders such as abortion and mastitis were excluded. Bulls were assigned to naturally mate the female at random. Artificial insemination (AI) was used starting from 2009 to 2015.Heifers were served for the first time when they reached 24 mo.,or 350 kg. Pregnancy was detected by rectal palpation 60 days after the last service. Animals were mainly grazed on Egyptian clover (Trifolium alexandrinum) during December to May.They were fed on concentrate mixture alone with rice straw. Buffalos producing more that are pregnant in the last two months of pregnancy were supplements with extra concentrate ration. Buffaloes were hand milked twice a day. Traits studied are total milk yield, lactation period and age at first calving.