منابع مشابه
First report on in vivo fertility trial of frozen thawed boar semen in India#
The present study was conducted to evaluate the in vivo fertility of frozen thawed boar semen. Twenty ejaculates collected from six mature boars were frozen in a programmable freezer. After freezing the semen was evaluated for different sperm quality parameters. Twenty five sows were inseminated artificially utilizing frozen thawed semen. The percentage of sperm motility, live sperm, live intac...
متن کاملEffect of selection for fertility of frozen-thawed semen in chickens on the fertility of fresh and stored semen.
Studies were conducted using 68 males from the seventh generation of a line of meat-type breeder chickens selected for increased duration of fertility of frozen-thawed semen and 69 males of the randomly selected control line. These chickens were used to determine the presence or absence of differences between the selected and control lines with respect to fertility and spermatozoal motility whe...
متن کاملEffect of processing of semen on capacitation time of fresh and frozen-thawed boar spermatozoa.
Ovulation time of gilts was controlled by oral treatment with altrenogest (17-allyl-hydroxyestra-4,9,11-trien-3-one) followed by gonadotropic hormone injections. Gilts were laparotomized 42 to 44 h after injection of human chorionic gonadotropin. Spermatozoa were surgically placed into ligated oviducts of gilts after one of the following semen treatments: frozen and thawed in Beltsville thawing...
متن کاملThe Cryoprotective Effect on Frozen-thawed Boar Semen of Egg Yolk Low Density Lipoproteins
In order to protect the spermatozoa against cold shock, hen egg yolk is widely used as a cryoprotective agent in semen freezing extenders for domestic animals. The protective action of yolk is largely presumed to be due to low density lipoproteins (LDL). The effects of LDL on sperm quality of bull and northern pike (Esox lucius) after freezing-thawing have been reported, but no study has been m...
متن کاملImproved fertility in gilts and sows after artificial insemination of frozen-thawed boar semen by supplementation of semen extender with caffeine and CaCl2.
Supplementation of semen extender with caffeine and CaCl(2) for artificial insemination (AI) of fresh spermatozoa has been demonstrated to reduce recruitment of uterine polymorphonuclear leukocytes (PMNs) and the activity of phagocytosis. Here, we determined if addition of caffeine and CaCl(2) to semen extender improves the fertility of frozen-thawed boar semen. In experiment 1, gilts were cerv...
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ژورنال
عنوان ژورنال: Australian Journal of Biological Sciences
سال: 1979
ISSN: 0004-9417
DOI: 10.1071/bi9790243