Investigations Associated with the Trans¬ Plantation of Bovine Ova
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چکیده
Synchronization of bovine oestrous cycles was studied with respect to methods of accomplishment. A total of 328 cows were re¬ cycled by: {a) daily subcutaneous injections of progesterone, {b) larger subcutaneous injections every 3rd day and {c) corpus luteum expression. Standing oestrous was exhibited by 262 cows. Twelve did not exhibit oestrus and fifty-four exhibited symptoms but refused mounting. Time between treatment and oestrus was 4-97 ±1 "82, 6-52 ±1 '25 and 2 -84 ±0-68 days, respectively, for the three methods employed. Length of time between injection and oestrus did not differ significantly
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تاریخ انتشار 2008