نتایج جستجو برای: records of 2593 baluchi ewes

تعداد نتایج: 21169936  

Journal: :Journal of animal science 1984
N M Fogarty G E Dickerson L D Young

Ewe performance was compared for five pure breeds of sheep (Finnsheep, F; Rambouillet, R; Dorset, D; Targhee, T; Suffolk, S) and the crosses in development of two maternal composite lines (C1 = 1/2F1/4R1/4D and C2 = 1/2F1/4T1/4S). The data involved 10,959 breeding season records of 4,219 ewes by 412 sires. Ewe production and the components (fertility, litter size, neonatal and preweaning lamb s...

2000
I. P. M. McQUEEN

A flock of 370 Dorset x Romney ewes with up to 96% autumn lambtng was developed without the aid of hormones. Data from flock and experimental records were used to compare the performance of autumnand spring-born lambs and their dams. Preliminary findings for three seasons show that ewes lambed in autumn had a greater spread of lambing, lower litter size and fewer perinatal lamb deaths. Growth o...

Journal: :veterinary research forum 2012
mohammad nouri babak mohammadian reza pourjamshid

the thyroid structural changes in pregnant ewes and their fetuses were investigated. out of 100 pairs of thyroid glands collected from ewes and their fetuses at the local municipal abattoir in ahvaz city of khuzestan province, multiple lesions were seen in 59% and 21% of the thyroid glands of ewes and fetuses, respectively. histologically, ninety nine lesions in the ewes and twenty two lesions ...

ژورنال: تحقیقات دامپزشکی 2007

The aim of this study was to determine changes in the concentration of leptin and thyroid hormone in energyrestricted ewes and effect of leptin injection on thyroid hormone level. In the first experiment, 28 ewes were assigned to two groups(n=14). Ewes were fed by a ration that provided 60% or 100% of maintenance energy requirements during 71 days. Blood samples were collected and body w...

Estrus synchronization is a valuable management tool that has been employed in enhancing reproductive efficiency in ewes. This study was conducted to investigate the reproductive performance of ewes with short and long-term estrous synchronization programs accompanied by eCG or GnRH during the non-breeding season. A total of 48 Afshari ewes were randomly selected and divided into two groups. In...

Journal: :تحقیقات دامپزشکی 0
ارمین توحیدی گروه علوم دامی، دانشکده علوم زراعی و دامی، دانشگاه تهران، کرج همایون خزعلی گروه زیست شناسی، دانشکده علوم پایه، دانشگاه شهید بهشتی تهران امیر نیاسری گروه علوم درمانگاهی، دانشکده دامپزشکی دانشگاه تهران مهدی ژندی دانش آموخته گروه علوم دامی، دانشکده کشاورزی دانشگاه تربیت مدرس تهران

the aim of this study was to determine changes in the concentration of leptin and thyroid hormone in energyrestricted ewes and effect of leptin injection on thyroid hormone level. in the first experiment, 28 ewes were assigned to two groups(n=14). ewes were fed by a ration that provided 60% or 100% of maintenance energy requirements during 71 days. blood samples were collected and body weight(b...

2015
M.S. Medan T. EL-Daek

The objectives of the present study were to determine the time of uterine involution and ovarian activity using ultrasound examination and progesterone assay. Weekly progesterone levels were measured starting one week postpartum until two weeks after the 1(st) postpartum estrus in Barbary ewes lambed during winter in AL-Bayda city, north of Libya. A total of 15 Barbary ewes were used in the pre...

Asef Ahmad Fazel, Hossein Daghigh kia

This study aims at investigating the effectiveness of utilizing barley as a Flushing ration with an energizing source and soybean meal-based diets as a Flushing ration with a protein source the sexual and breeding behaviors in Ghezel sheep. To this end, 36 three and half-year old ewes (51±1.5 kilograms) with the record of giving birth to two lambs and 6 three-year old (89±2.5 kilograms) rams we...

Journal: :Journal of animal science 2007
J Casellas G Caja A Ferret J Piedrafita

A performance data set from 376 Ripollesa purebred ewes of the experimental flock of the Universitat Autònoma of Barcelona was analyzed using a bivariate Bayesian threshold-linear model. The data set contained 1,598 litter size records and 1,699 days-to-lambing records. The model included the additive genetic effect of each animal and 3 nongenetic sources of variation: ewe age, year of lambing,...

ژورنال: :مجله تحقیقات دامپزشکی (journal of veterinary research) 2007
ارمین توحیدی همایون خزعلی امیر نیاسری مهدی ژندی

the aim of this study was to determine changes in the concentration of leptin and thyroid hormone in energyrestricted ewes and effect of leptin injection on thyroid hormone level. in the first experiment, 28 ewes were assigned to two groups(n=14). ewes were fed by a ration that provided 60% or 100% of maintenance energy requirements during 71 days. blood samples were collected and body w...

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