In synchronized pigs, the duration of ovulation is not affected by insemination and is not a determinant for early embryonic diversity.

In synchronized pigs, the duration of ovulation is not affected by insemination and is not a determinant for early embryonic diversity. Research Abstract Details 

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In synchronized pigs, the duration of ovulation is not affected by insemination and is not a determinant for early embryonic diversity. Abstract Text:

N M Soede,B Kemp,

The duration of ovulation (i.e., the time interval between the ovulation of the first and the last follicle in a sow during an estrus) is said to be related to embryonic diversity, which in turn is related to embryonic mortality. The relationship between the duration of ovulation and within-litter early embryonic diversity and the influence of insemination on the duration of ovulation were studied. To determine whether ovulation assessment (transrectal ultrasonography) influenced early embryonic development, control sows were not scanned. Multiparous cyclic sows with an exogenously induced estrus were used. Ovulation detection by means of transrectal ultrasonography did not influence fertilization rate, accessory sperm count, early embryonic development or early embryonic diversity, and, therefore, ultrasonography appears to be a worthwhile method for studying the time and duration of ovulation. Insemination did not influence (P>0.05) the duration of ovulation, in sows which ovulated between 39 and 49 hours after hCG injection. The duration of ovulation (mean+/-SD(range)) was 2.4+/-0.7 (1.1 to 4.0) hours in 15 sows which were artificially inseminated at 22 and 30 hours after hCG injection. In 8 noninseminated sows, the duration of ovulation was 2.3+/-0.5 (1.5 to 3.3) hours. The duration of ovulation was not related to embryonic diversity (SD of the number of nuclei or the number of cell cycles of embryos in a litter) at 114 to 121 hours after ovulation. Thus, a difference of up to 3 hours in the duration of ovulation does not seem to be an important determinant of variation in embryonic diversity between sows.

In synchronized pigs, the duration of ovulation is not affected by insemination and is not a determinant for early embryonic diversity. Publishing Authors By Initials

NM Soede,B Kemp,

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In synchronized pigs, the duration of ovulation is not affected by insemination and is not a determinant for early embryonic diversity. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Theriogenology

VOLUME: 39

Page Numbers: 1043-53

Journal Abbreviation: Theriogenology

ISSN: 0093-691X

DAY: 26

MONTH: May

YEAR: 1993

In synchronized pigs, the duration of ovulation is not affected by insemination and is not a determinant for early embryonic diversity. Information

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LANGUAGE: eng

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Grant and Affiliation Information for In synchronized pigs, the duration of ovulation is not affected by insemination and is not a determinant for early embryonic diversity.

AFFILIATION: Agricultural University, Department of Animal Husbandry P.O. Box 338, 6700 AH Wageningen, The Netherlands.

Country: United States

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MEDLINETA: Theriogenology

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