Ovulation and Embryonic Developmental Rate Following hCG-stimulation in Sows
نویسندگان
چکیده
منابع مشابه
Ovulation Induction in Sows
This study reviewed the protocols for ovulation induction in sows by human chorionic gonadotropin (hCG) and gonadotropin releasing hormone (GnRH). In pigs, it was documented that ovulation usually occurred about 70% of the way through oestrus. However, the duration of oestrus in sows highly varies, producing difficulty in performing artificial insemination (AI) in sows at optimal time. In pract...
متن کاملChromosomal Aneuploidies and Early Embryonic Developmental Arrest
Background Selecting the best embryo for transfer, with the highest chance of achieving a vital pregnancy, is a major goal in current in vitro fertilization (IVF) technology. The high rate of embryonic developmental arrest during IVF treatment is one of the limitations in achieving this goal. Chromosomal abnormalities are possibly linked with chromosomal arrest and selection against abnormal fe...
متن کاملConception Rate, Farrowing Rate and Litter Size after Intrauterine Insemination with Cryopreserved Boar Semen in Spontaneous and Induced Ovulation Sows
Introduction The procedure for artificial insemination (AI) in pigs using cryopreserved semen involves the deposition of a high number of cryopreserved spermatozoa (5-6 x10 cells) in a large volume of diluent (80-100 ml) into the cervix. Despite inseminating with this high sperm number, low fertility levels are usually obtained (about 20-30% conception and farrowing rates and 2-3 total piglets ...
متن کاملThe influence of the weaning-to-breeding interval on ovulation rate in parity-two sows
Results: Average ovulation rate for all sows in the study was 14.58 +/0.32 ova and for the parity-two sows was 14.0 +/0.23 ova. The mean weaning-to-breeding interval for the parity-two sows was 5.87 +/0.14 days. Ovulation rate in the parity-two sows increased by 0.25 +/0.09 ova as the number of piglets weaned in the sow’s previous parity increased by one piglet (P <.05). The parity-two sow’s po...
متن کاملSERUM 6-hCG CONCENTRATION CHANGES FOLLOWING INTRAMUSCULAR hCG ADMINISTRATION
In circumstances such as in vitro fertilization (IVF) or in patients with luteal phase defect, one needs to ensure the establishment of pregnancy as soon as possible. At the same time, a question arises: How can a physician make sure that the β-hCG is of an endogenous source and not the residue of the prescribed drugs (hCG)? In this article we have studied the elimination time of 1M inject...
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ژورنال
عنوان ژورنال: Acta Veterinaria Scandinavica
سال: 2000
ISSN: 1751-0147
DOI: 10.1186/bf03549640