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신원집,김희석,서국성,김종계 ( Won Jib Shin,Hee Seok Kim,Kug Sung Suh,Jung Key Kim ) 한국축산학회 1980 한국축산학회지 Vol.22 No.6
This study was conducted to investigate the rate of multiple births in Korean native cow treated with subcutaneous injection of 1000IU PMS on day 17 of estrus cycle followed by an intravenous injection of 1000IU HCG on the onset day of estrus. The results obtained were as follows: 1. The rate of normal estrus exhibited was 78.9% in the lst m 2nd parity cows and increased as the parity increased. 2. The mean duration from PMS Treatment to the onset of estrus was 4.3 days grad was no significant difference among tire parities. 3. The mean number of matured follicles per cow treated was 1.2 and was no significant difference among the parities. 4. The rates of multiple birts were 4.8%, 40.0% and 23.9% for 1st to 2nd parity, over 3rd parity and over all, respectively, and were increased as the parities increased.
한우 다태분만 ( 多胎分娩 ) 유도를 위한 호르몬 처리수준 결정시험
김희석,서국성,김종계,신원집 ( Hee Seok Kim,Kug Sung Suh,Jung Kye Kim,Won Jib Shin ) 한국축산학회 1980 한국축산학회지 Vol.22 No.6
This study was carried out to determine the dosage of PMS for increasing the rate of multiple births in Korean native cow. Animals were injected subcutaneously with 50G, 750, 1,000IU PMS, respectively on day 17 of the oestrus cycle followed intravenously by 1000IU HCG at the onset of the next oestrus (Only 1-2 Graffian follicles). The results obtained were as follows; 1. Most. of the cows treated witty 1000IU PMS exhibited normal oestrus behaviour(87.5%) and those treated with 500ICT revealed the poorest oestrus rate (56.6%) among the treatments. 2. Duration from the injection time with PMS to the onset of estrus was 4.8 days and was no significant difference among the treatments of various dosages of PMS. 3. The mean number of matured follicles per cow treated with 1000IU PMS was 1.3.