Japanese Journal of Veterinary Research;Volume 34, Number 1

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RELATIONSHIP BETWEEN SERUM TOTAL CHOLESTEROL LEVELS ON THE DAY OF HORMONAL TREATMENT AND THE SUBSEQUENT OVARIAN RESPONSE IN OVARIAN CYSTIC COWS

KWEON, Oh Kyeong;ONO, Hitoshi;UCHISUGI, Haruo;MIYAMOTO, Hiroyuki;KOYAMA, Hitoshi;KANAGAWA, Hiroshi

Permalink : http://hdl.handle.net/2115/4640
JaLCDOI : 10.14943/jjvr.34.1.1
KEYWORDS : cystic cows;total cholesterol;ovarian response

Abstract

The relationship between serum total cholesterol level and the response of ovarian cyst 10 days after treatment was investigated. In experiment 1,46 Holstein cows were used between July and August 1982,and in experiment 2,21 Holstein cows were used between February and April 1983. HCG (10,000-20,000IU) was used for treatment in experiment 1,and hCG or LH-RH (100-200 μg) was used in experiment 2. Ovarian changes were observed about 10 and 20 days after the treatment by rectal palpation. Ovarian response was divided into 2 groups : with ovarian response (disappearance or luteinization of cyst, occurrence of normal estrus), without ovarian response (no changes of cyst or appearance of new cyst). In experiment 1,82.4% (14/17) of cows with total cholesterol levels between 160mg/dl and 210mg/dl showed ovarian response to hormonal treatment, which was significantly higher than those of cows with total cholesterol levels of less than 160mg/dl and over 210mg/dl (P<0.05). Similar results were obtained in experiment 2.

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