Estrus Synchronization and Artificial Insemination with Fresh and Chilled Semen in Assaf Ewes
نویسندگان
چکیده
منابع مشابه
Quality of fresh and chilled-stored raccoon dog semen and its impact on artificial insemination efficiency
BACKGROUND The aim of the study was to evaluate the quality of fresh raccoon dog semen and raccoon dog semen stored at 4 °C. The qualitative evaluation was based on apoptosis in the sperm cells, which was tested by the Annexin V/Pi assay, the TUNEL method and JC-1. In addition, the suitability of the semen for insemination and its effect on reproduction in females were determined in relation to...
متن کاملTechniques of artificial insemination by fresh, chilled and frozen semen - Proceedings of SCIVAC, 2007 - Rimini
Artificial insemination (AI) is becoming more common in canine reproduction, permitting the use of shipped semen, assistance for geriatric or subfertile males, coverage of dominant females, and advanced reproductive technology such as intrauterine deposition of semen. AI may be performed with fresh, chilled, or frozen semen. All instruments should be clean and free of any chemical contamination...
متن کاملKeys to Successful Estrus Synchronization and Artificial Insemination Programs
Introduction The development of effective methods of synchronizing estrus and ovulation has been based on our understanding of the physiological and hormonal mechanisms controlling the estrous cycle and the initiation of estrous cyclicity and prepuberty in heifers and postpartum cows. Although estrus synchronization products (PGF2, MGA, CIDR and GnRH) and protocols have changed over time, the ...
متن کاملSeasonality, estrous cycle characterization, estrus synchronization, semen cryopreservation, and artificial insemination in the Pacific white-sided dolphin (Lagenorhynchus obliquidens).
The reproductive physiology of the Pacific white-sided dolphin, Lagenorhynchus obliquidens, was characterized to facilitate the development of artificial insemination (AI) using cryopreserved spermatozoa. Specific objectives were to: 1) describe reproductive seasonality of the Pacific white sided dolphins; 2) describe urinary LH and ovarian steroid metabolites during the estrous cycle; 3) corre...
متن کاملSynchronization of estrus in suckled beef cows for detected estrus and artificial insemination and timed artificial inseminati
We determined whether a fixed-time AI (TAI) protocol could yield pregnancy rates similar to a protocol requiring detection of estrus, or estrous detection plus TAI, and whether adding a controlled internal device release (CIDR) to GnRH-based protocols would enhance fertility. Estrus was synchronized in 2,598 suckled beef cows at 14 locations, and AI was preceded by 1 of 5 treatments: 1) a CIDR ...
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ژورنال
عنوان ژورنال: Agricultural Sciences
سال: 2018
ISSN: 2156-8553,2156-8561
DOI: 10.4236/as.2018.91002