two experiments were performed to determine the effectiveness of different progestogens contained in intravaginal devices, different doses of ecg and subsequent hcg treatment on the reproductive performance of estrus-induced mature lori ewes. in the first experiment, 88 ewes were allocated into two groups, and were treated with either fluorogestone acetate (fga) sponges or controlled internal d...

Samaneh Boroumand-Noughabi ([email protected]) Hamid Reza Sima ([email protected]) Kamran Ghaffarzadehgan ([email protected]) Mostafa Jafarzadeh ([email protected]) Hamid Reza Raziee ([email protected]) Hanieh Hosseinnezhad ([email protected]) Omeed Moaven ([email protected]) Mohammad Taghi Rajabi-Mashhadi ([email protected]) Amir Abbas Azarian (azar...

A. R. Bozorgmanesh a , M. Otadi b, A. A. Safe Kordi c, F. Zabihi d, M. Barkhordari Ahmadi e (a) Department of Chemical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran (b) Department of Chemical Engineering, Central Branch, Islamic Azad University, Tehran, Iran (c) Department of Chemical Engineering, Sharif University of Technology, Tehran, Iran (d) Department of ...

In sheep industry, pregnancy rate after artificial insemination (AI) declines due to the complex anatomy of the cervix in ewes, such that it might prevent effective intrauterine insemination. At estrus, cervical relaxation occurs to some degree in ewes, which is regulated by the changes in the levels of reproductive hormones. This study aimed to evaluate the effects of estradiol and intravenous...

Reproductive performance was evaluated in non-lactating crossbred ewes to which were administered the exogenous GnRH and PMSG. The ewes were randomly allocated in three treatment groups (n=40).After accurate detection of estrus and 2 hours prior to mating, 2.5 mL of distilled water and 2.5 mL of GnRH were injected intramuscular to each ewe of the first (control) and second group, respectively. ...

The aim of this survey was to evaluate the frequency of pregnant ewes slaughtered in Khorram Abadabattoir and estimation of their gestational age. Over a period of five months in fall and winter, a totalnumber of 3046 uterine tracts were collected. Pregnancy was detected in 56.50% of ewes, 52.36% and 4.13% of which carried singleton and twins, respectively. The highest frequency of pregnancy wa...

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...

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 ...