Assessment of bull fertility using a mucus penetration test and a human chorionic gonadotrophin stimulation test.

Assessment of bull fertility using a mucus penetration test and a human chorionic gonadotrophin stimulation test. Research Abstract Details 

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Assessment of bull fertility using a mucus penetration test and a human chorionic gonadotrophin stimulation test. Abstract Text:

T Murase,K Okuda,K Sato,

The relative predictive abilities of an in vitro mucus penetration test and a human chorionic gonadotrophin (hCG) stimulation test were compared for assessing bull fertility. Cervical mucus was collected from 22 Holstein cows and then stored in liquid nitrogen. Semen was collected from 13 Holstein bulls and evaluated for standard semen parameters. The mucus penetration test was performed with fresh ejaculates, and the results were expressed as the distance traveled by the vanguard spermatozoa during incubation at 38 degrees C for 10 min. Increases in plasma testosterone levels were determined by a ratio of testosterone concentration before and after hCG injection. Sperm motility and mucus penetration were significantly correlated with the conception rate. However, no significant correlation was confirmed between the increased plasma testosterone levels and conception rate. The results indicate that the mucus penetration test is an effective method for predicting the fertility of bulls.

Assessment of bull fertility using a mucus penetration test and a human chorionic gonadotrophin stimulation test. Publishing Authors By Initials

T Murase,K Okuda,K Sato,

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Assessment of bull fertility using a mucus penetration test and a human chorionic gonadotrophin stimulation test. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Theriogenology

VOLUME: 34

Page Numbers: 801-12

Journal Abbreviation: Theriogenology

ISSN: 0093-691X

DAY: 26

MONTH: Nov

YEAR: 1990

Assessment of bull fertility using a mucus penetration test and a human chorionic gonadotrophin stimulation test. Information

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LANGUAGE: eng

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AFFILIATION: Department of Veterinary Obstetrics and Gynecology Obihiro University of Agriculture and Veterinary Medicine, Obihiro 080, Japan.

Country: United States

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MEDLINETA: Theriogenology

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