نتایج جستجو برای: gestation length

تعداد نتایج: 334567  

Journal: :journal of livestock science and technologies 2015
m. s. mokhtari m. moradi shahrbabak a. nejati javaremi g. j. m. rosa

the main objective of this study was to estimate the genetic parameters for multi-trait evaluation of birth weight (bw), gestation length (gl) and calving difficulty (cd) in first-parity iranian holstein dairy cattle. the data included 29,950 calving records collected during 1995 to 2014 by the animal breeding and improvement center of iran. a threshold-linear sire-maternal grandsire model was ...

G. Miah, K.N. Islam M. Shahjalal M.A. Hossain M.I. Hossain M.S. Hossain M.S.H. Sohel

A cross-sectional comparative study was carried out to investigate the productive and reproductive performances of different genetic groups of crossbred cows at three different farming conditions in Bangladesh. Crossbred cows (n=90) those already completed third lactations, were selected randomly from three different dairy farms (e.g. Jarip, Mullah and Nahar) located in Chittagong, Bangladesh. ...

Journal: :Canadian Journal of Animal Science 1989

Journal: :Environmental Health Perspectives 2011

Journal: :Journal of Dairy Science 1956

Journal: :Sri Lanka Journal of Obstetrics and Gynaecology 2013

Journal: :Ultrasound in Obstetrics & Gynecology 2006

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