Analysis relating to corpora lutea and two continuous administrations of PMSG in beef cattle.
نویسندگان
چکیده
منابع مشابه
Ovarian response after four continuous administrations of gonadotrophin in beef cattle.
After 4 repeated treatrnents of gonadotrophin, 8 beef cattle showed an average of 12.1, 10.1, 12,1 and 8.4 corpora lutea at the lst, 2nd, 3rd and 4th treatments, respectively, However, different dosages of gonadotrophin ranging from 1,600 to 3,5001U of pregnant mare's serum gonadotrephin (PMSG}, were used. The average number of corpora lutea decreased from 12.4, 8,4, 9,8 and 6.0 cluring the lst...
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Ovulation rate, fertilization rate and prenatal mortality were studied in yearling beef heifers treated with PMSG or FSH and in non-treated controls. Oestrus was synchronized in 50% of the animals in each treatment with an oral progestagen. The gonadotrophin injections were given during the normal oestrous cycle or during the progestagen-administration period. All heifers were inseminated 6 to ...
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ورودعنوان ژورنال:
- The Japanese journal of veterinary research
دوره 28 4 شماره
صفحات -
تاریخ انتشار 1980