Synchronization of œstrus in ewes with Provera sponges/PMSG, prostaglandin F2α or the prostaglandin analogue, ICI 80996, and fertility following natural mating or artificial insemination
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چکیده
منابع مشابه
Fertility in Merino Ewes in Artificial Insemination Programmes following Synchronization of Ovulation Using Cloprostenol, a Prostaglandin Analogue
Ten field and laboratory experiments were conducted in which Merino ewes were treated with one or two 125pg injections of Cloprostenol, an analogue of prostaglandin F2a (PG). All treatments commenced in the luteal phase of the oestrous cycle. Sixty-six percent of ewes were detected in behavioural oestrus within 64 hr of completion of treatments although 95% of all treated ewes ovulated in appar...
متن کاملUse of the Prostaglandin Analogue, Ici 80996, to Synchronise Ovulation in Sheep in an Artificial Insemination Programme
The effects on fertility of single or double treatments with the prostaglandin analogue ICI 80996 were studied in a flock of Merino ewes in an artificial insemination programme. The number of ewes lambing in the double treatment group and the untreated group was significantly higher (P<0.001) than the number of ewes lambing in the single treatment group. However there were large day to day vari...
متن کاملFertility in dairy cows following presynchronization and administering twice the luteolytic dose of prostaglandin F2α as one or two injections in the 5-day timed artificial insemination protocol.
The objectives were to evaluate pregnancy per AI (P/AI) of dairy cows subjected to the 5-day timed AI protocol under various synchronization and luteolytic treatments. Cows were either presynchronized or received supplemental progesterone during the synchronization protocol, and received a double luteolytic dose of PGF2α, either as one or two injections. In Experiment 1, dairy cows (n=737; Hols...
متن کاملEffect of prostaglandin F2α and GnRH administration at the time of artificial insemination on reproductive performance of dairy cows
The present study aimed to determine the effect of administrating prostaglandin F2α (PGF2α) and GnRH at the time of artificial insemination (AI) on the pregnancy per artificial insemination (P/AI) and the pregnancy survival rate of dairy cows. A number of 830 lactating Holstein cows were randomly divided into four groups. Cows in group 1 (n=200) treated with 150 µg d-cloprostenol. In group 2 (n...
متن کاملEffect of Flushed Feeding and Age on Estrus Synchronization and Conception Rate of Holstein × Local Crossbred Cows After Using Analogue GnRH and Prostaglandin F2α Hormone
The study was conducted to know the effect of flushed feeding on estrus synchronization and conception rate of Holstein ÍLocal crossbred cow’s after using the GnRH (fertagyl) and PGF2α hormone. As a representative sample 20 Holstein ÍLocal crossbred cows were chosen from Chittagong Cantonment Military Dairy Farm in Bangladesh and the experimental work was carried out for 60 days. Ten cows were ...
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ژورنال
عنوان ژورنال: Reproduction Nutrition Développement
سال: 1982
ISSN: 0181-1916
DOI: 10.1051/rnd:19820305