Effect of progesterone impregnated vaginal sponges and PMSG administration on estrus synchronization in mares.

Effect of progesterone impregnated vaginal sponges and PMSG administration on estrus synchronization in mares. Research Abstract Details 

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Effect of progesterone impregnated vaginal sponges and PMSG administration on estrus synchronization in mares. Abstract Text:

J E Dinger,E E Noiles,M J Bates,

Estrus synchronization trials with mares were carried out using progesterone impregnated vaginal sponges and pregnant mare serum gonadotropin (PMSG) injections. In Phase 1, 10 non-pregnant, non-lactating mares were administered 1 g progesterone via vaginal sponges (5 x 6 cm) without regard to stage of estrous cycle. Sponges were replaced on day 7 of trial for an additional seven days. On day 12, PMSG (1000 IU, IM) was administered to five mares (Group A); five control mares (Group B) received no injections. There was no difference (P>.05) in estrus synchronization between Group A and Group B. Total sponge retention was 75%. In Phase 2, 11 non-pregnant, non-lactating mares were administered 2 g progesterone via vaginal sponges (10 x 6 cm) without regard to stage of estrous cycle. Sponges were replaced on day 7 of trial for an additional seven days. Estrus behavior was exhibited in 54.5% of mares by day 19. Total sponge retention was 95.4%. There was no difference (P>.05) in estrus synchronization or sponge retention between Phase 1 and Phase 2. The larger Phase 2 sponges showed less (P<.01) posterior movement within the vagina than the smaller Phase 1 sponges.

Effect of progesterone impregnated vaginal sponges and PMSG administration on estrus synchronization in mares. Publishing Authors By Initials

JE Dinger,EE Noiles,MJ Bates,

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Effect of progesterone impregnated vaginal sponges and PMSG administration on estrus synchronization in mares. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Theriogenology

VOLUME: 16

Page Numbers: 231-7

Journal Abbreviation: Theriogenology

ISSN: 0093-691X

DAY: 26

MONTH: Aug

YEAR: 1981

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LANGUAGE: eng

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Grant and Affiliation Information for Effect of progesterone impregnated vaginal sponges and PMSG administration on estrus synchronization in mares.

AFFILIATION: Department of Animal Industries University of Connecticut Storrs, Connecticut 06268 USA.

Country: United States

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MEDLINETA: Theriogenology

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