نتایج جستجو برای: 1577 months for average calf production interval

تعداد نتایج: 10725233  

Journal: :علوم دامی ایران 0
محمود وطن خواه عضو هیأت علمی مرکز تحقیقات کشاورزی و منابع طبیعی شهرکرد مهراب فرجی کارشناس ارشد سازمان جهاد کشاورزی استان چهارمحال و بختیاری علی اکبر قره داغی عضو هیأت علمی موسسه تحقیقات علوم دامی کشور علیرضا آقاشاهی عضو هیأت علمی موسسه تحقیقات علوم دامی کشور

four hundred and ninety five smallholder dairy farms in 52 villages of different cities in chaharmohal and bakhtiari province including 1321 lactating cows and totalling 2811 total mature cows (lactating and dry)were employed during winter 2009 to summer 2010 to estimate the economic opportunities as per cow in smallholder dairy farms. a questionnaire survey was employed to collect data from th...

In this study, production, population and economic parameters of 30 buffalo herds of Khuzestan province in two sale conditions during 2016-2017 were used to estimate the economic value for production, reproductive and survival traits. Economic value of the traits were estimated by one unit increase for each trait using the maximum profit trend. The average annual revenue, cost and profit per he...

A.A. Gharadaghi A.R. Aghashahi M. Faraji M. Vatankhah,

In this study 495 smallholder dairy farms in 52 villages of different township in southwestern province of Iran (Chaharmohal and Bakhtiari province) included 1321 lactating cows and 2811 total mature cows (lactating and dry) during winter 2009 to summer 2010 were used to estimate economic opportunities insmallholder dairy farms. Questionnaire survey was used to collect data from last year infor...

Journal: :iranian journal of applied animal science 2013
m. vatankhah m. faraji a.a. gharadaghi a.r. aghashahi

in this study 495 smallholder dairy farms in 52 villages of different township in southwestern province of iran (chaharmohal and bakhtiari province) included 1321 lactating cows and 2811 total mature cows (lactating and dry) during winter 2009 to summer 2010 were used to estimate economic opportunities insmallholder dairy farms. questionnaire survey was used to collect data from last year infor...

Journal: :علوم دامی ایران 0
محمود وطن خواه دانشیار دانشگاه آزاد اسلامی، واحد شهرکرد مهراب فرجی کارشناس ارشد علوم دامی سازمان جهاد کشاورزی استان چهارمحال و بختیاری

four hundered and ninety five (495) smallholder dairy farms active in 52 villages of different cities in chaharmohalo bakhtiari province, keeping 1321 lactating within a total of 2811 mature cows (lactating and dry) were used. these herds were taken during winter 2009 to summer 2010 to assess some of the production, reproductive and economic performance traits under smallholder management syste...

Journal: :Journal of animal science 2004
J A Arango L V Cundiff L D Van Vleck

Data from the first four cycles of the Germplasm Evaluation program at the U.S. Meat Animal Research Center were used to evaluate weights of Angus, Hereford, and F1 cows produced by crosses of 22 sire and 2 dam (Angus and Hereford) breeds. Four weights per year were available for cows from 2 through 8 yr of age (AY) with age in months (AM). Weights (n = 61,798) were analyzed with REML using cov...

A. Shafei Naderi A.A. Gharahdaghi M. Vatankhah, M.A. Abbasi M.R. Mofidi

In this study production, reproduction, population, management and economic parameters resulted from recording of 7 flocks with size 57 to 400 and 721 heads of camels in a cycle of reproduction, during three years from 2011 to 2013 were used to find out of the economic values of important traits in one hump camel in desert areas rearing system. The economic traits that appeared in profit equati...

Journal: :Journal of animal science 1990
W E Beal D R Notter R M Akers

Milk production is a primary factor controlling weaning weight of beef calves. The purpose of this experiment was to develop a practical and reliable on-farm method of estimating milk production and to relate estimates of milk production and milk composition to preweaning weight gain of calves. A second objective was to relate milk production to postpartum ovarian activity. Milk production of s...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید چمران اهواز - دانشکده مهندسی علوم آب 1393

drought is transient phenomenon , slow , repetitive and integral part of the climate of each region. drought begins with a substantial reduction in precipitation over the long-term average rainfall and over time, reduced soil moisture and surface and ground water resources will continue to decrease. this phenomenon is the most important in bakhtegan basin because of its importance in strategic ...

Journal: :Journal of Dairy, Veterinary & Animal Research 2022

The study was conducted in Mieso and Bordede districts, West Hararghe Zone of Oromiya National Regional State with the objectives assessing major constraints camel production, reproductive performances, physicochemical quality milk areas. A total 120 households (camel owners) were selected purposively for interview (i.e 20 from each kebeles). Feed shortage, conflict over scarcity natural resour...

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