Embryo quality and andrological study of two subfertile bulls versus five control bulls with normal fertility.

Embryo quality and andrological study of two subfertile bulls versus five control bulls with normal fertility. Research Abstract Details 

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Embryo quality and andrological study of two subfertile bulls versus five control bulls with normal fertility. Abstract Text:

M Andersson,J Aalto,I Gustavsson,

Andrological studies and embryo morphology evaluation of superovulated cows were performed on 2 randomly selected subfertile dairy bulls whose semen was used for artificial insemination and on 5 control bulls with normal fertility. Neither sperm motility studies, nor sperm morphology or testicular measurements differed between the subfertile and the control bulls. Altogether 315 ova were recovered from 41 superovulated cows inseminated with semen collected from either the subfertile or the normal control bulls. The spermatozoa of one of the 2 subfertile bulls was shown to have a decreased ability to fertilize superovulated ova, while the other subfertile animal, the bull with the lowest noreturn rate, was found by chromosome analysis to have a reciprocal translocation (60, XY, rcp 20:24), causing embryonic death. We suggest that subfertile bulls should not be used in commercial embryo transfer programs nor in artificial insemination and that andrological studies on subfertile bulls with good sperm motility should include evaluation of 6- to 7-day-old ova from superovulated cows to determine if the fertilization rate is normal or impaired. A chromosome analysis should also be performed when a subjertile bull has a normal fertilization rate of ova.

Embryo quality and andrological study of two subfertile bulls versus five control bulls with normal fertility. Publishing Authors By Initials

M Andersson,J Aalto,I Gustavsson,

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Embryo quality and andrological study of two subfertile bulls versus five control bulls with normal fertility. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Theriogenology

VOLUME: 38

Page Numbers: 623-31

Journal Abbreviation: Theriogenology

ISSN: 0093-691X

DAY: 26

MONTH: Oct

YEAR: 1992

Embryo quality and andrological study of two subfertile bulls versus five control bulls with normal fertility. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Embryo quality and andrological study of two subfertile bulls versus five control bulls with normal fertility.

AFFILIATION: Department of Obstetrics and Gynaecology College of Veterinary Medicine, Hautjärvi 04840, Finland.

Country: United States

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MEDLINETA: Theriogenology

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