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논문 기본 정보

자료유형
학술저널
저자정보
Park, Sung-Jai (Division of Dairy Science, National Institute of Animal Science, RDA) Baek, Kwang-Soo (Division of Dairy Science, National Institute of Animal Science, RDA) Kim, Hyeon-Shup (Division of Dairy Science, National Institute of Animal Science, RDA) Jeon, Byeong-Soon (Division of Dairy Science, National Institute of Animal Science, RDA) Her, Tai-Young (Division of Dairy Science, National Institute of Animal Science, RDA) Lim, Hyun-Joo (Division of Dairy Science, National Institute of Animal Science, RDA) Kang, Seok-Jin (Division of Dairy Science, National Institute of Animal Science, RDA) Lee, Hyun-June (Division of Dairy Science, National Institute of Animal Science, RDA) Ki, Kwang-Sook (Division of Dairy Science, National Institute of Animal Science, RDA) Jo, Woon-Mo (Division of Dairy Science, National Institute of Animal Science, RDA) Kim, Sang-Bum (Division of Dairy Science, National Institute of Animal Science, RDA) Jung, Young-Hun (Division of Dairy Science, National Institute of Animal Science, RDA) Ahn, Byeong-Seog (Division of Dairy Science, National Institute of Animal Science, RDA)
저널정보
한국동물번식학회 한국동물번식학회지 한국동물번식학회지 제33권 제3호
발행연도
2009.1
수록면
153 - 156 (4page)

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초록· 키워드

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The purpose of this study was to assess for re-breeding concentrate period in postpartum in milking cows. The 48 cows aged $3.5{\sim}5.5$ years and of $400{\sim}600\;kg$ body weight were examined every 3rd day from 15 to 36 day postpartum. Blood samples for progesterone and estradiol $17{\beta}$ hormone analyses were withdrawn from the coccygeal vein every third day until the end of the experiment. The ovarian follicular numbers were verified and measured using a multi frequency probe. The least squares means are presented for each day by GLM of SAS. The results showed that ovary lengths (right ovary; $1.64{\pm}0.62\;cm$, left ovary; $1.44{\pm}0.46\;cm$) were similar in right and left ovary activity level during estrous cycle of postpartum cows. We were judged completed uterus on day at $2.31{\pm}0.17\;cm$ level of cervix diameter. And we were monitoring started at $6.44{\pm}2.03\;cm$ from day 15 after postpartum. The results showed that mean plasma concentration of progesterone (3.28 ng/ml) in large follicle gradually increased days 30 in postpartum. And, monitoring of estradiol 176 (22.18 pg/ml) hormone during postpartum period would be useful to predict the ovarian and uterus activity for re-breeding in postpartum milking cows. From these results, we conclude that cervix diameter (mean: 2.31 cm) was very important for reproductive organ recovery standard level of postpartum milking cows, hormone secretion level ($P_4$: 3.28 ng/ml, $E_2$: 22.18 pg/ml) and body condition score ($2.5{\sim}2.75$) level about 30 days in postpartum period.

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