Effects of season for making frozen semen and individual rams on lambing rate of ewes induced estrus during the non breeding season
نویسندگان
چکیده
منابع مشابه
Effects of PMSG Doses on Reproductive Performance of Kurdi Ewes Artificially Inseminated during Breeding Season
This experiment was conducted to determine the reproductive performance of Kurdi ewes which were artificially inseminated (AI). In total 240 Kurdi ewes, weighing 49.5±2.5 kg were used in the trail. The ewes were allocated randomly to one of four groups (n=60/in each group). For synchronizing, controlled internal drug release (CIDR) was placed in the vagina of all individuals for 14 days. After ...
متن کاملEffects of estradiol and oxytocin injection on the efficiency of artificial insemination in Iranian Zel ewes during the breeding season
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...
متن کاملNew Technique for Activating Reproductive System during Non-Breeding Season in Ghezel Ewes
Ghezel sheep is one of the main breeds in the north-west of Iran which is reared for meat, milk and wool production. Improving reproduction of this breed will have a significant impact on the economic development of local farmers. Therefore, in the present study the effect of simultaneous use of estrus synchronization(controlled internal drug releasing (CIDR) and equine chorionic gonadotropin (...
متن کاملCervical insemination of indigenous does with frozen-thawed goat semen during the non-breeding season
Introduction We received a request from the owner of a communal flock of indigenous goats in the Northern Province to inseminate some of his does with Gorno Altai semen. The only income he derived from this flock was through the sale of live goats at Christmas. He wanted to embark on a cross-breeding programme in an attempt to create an additional source of income from the fibre that would pote...
متن کاملThe Effects of Short and Long Term Medroxy Progesterone Acetate (MAP) Sponge Treatments on Reproductive Performance during the Non-Breeding Season of Arabian Ewes
The aim of this study was to evaluate the reproductive efficiency of short and long term treatment with progestagens in addition to pregnant mare serum gonadotropin (PMSG) in Arabian ewes during the non-breeding season. A total of 56 ewes were divided into three groups: in group I vaginal sponges (60 mg medroxy progesterone acetate; MAP) were applied and removed after 6 days; in group II, vagin...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Japanese Journal of Sheep Science
سال: 1994
ISSN: 0389-1305,2186-1013
DOI: 10.11595/jpnjsheepsci1964.1994.16