Injection of vitamin A at insemination and reproductive performance in gilts

dc.citation.epage6en_US
dc.citation.spage4en_US
dc.contributor.authorSchoneweis, D.
dc.contributor.authorNelson, M.
dc.contributor.authorDavis, Duane L.
dc.contributor.authoreiddavisen_US
dc.contributor.authoreidmnelsonen_US
dc.date.accessioned2010-03-26T19:17:17Z
dc.date.available2010-03-26T19:17:17Z
dc.date.issued2010-03-26T19:17:17Z
dc.date.published1994en_US
dc.description.abstractThis experiment tested the hypothesis that an injection of vitamin A on the day of first detected estrus would improve reproductive performance of gilts. Gilts (432) were assigned to either receive vitamin A (1,000,000 IV) or placebo injected intramuscularly on the first day of estrus. No differences in farrowing rate, number of pigs farrowed per litter, or birth weight of pigs were detected. Possibly, gilts do not respond to vitamin A with improved fecundity. Other workers have reported an improvement in litter size for sows. Alternatively, treatment with vitamin A may need to precede estrus to improve litter size or multiple injections may be required. Experiments showing benefits for sows have treated them at weaning and, therefore, a few days before estrus.en_US
dc.description.conferenceSwine Day, Manhattan, KS, November 17, 1994en_US
dc.identifier.urihttp://hdl.handle.net/2097/3357
dc.publisherKansas State University. Agricultural Experiment Station and Cooperative Extension Serviceen_US
dc.relation.isPartOfSwine day, 1994en_US
dc.relation.isPartOfKansas Agricultural Experiment Station contribution; no. 95-175-Sen_US
dc.relation.isPartOfReport of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 717en_US
dc.subjectSwineen_US
dc.subjectGiltsen_US
dc.subjectVitamin Aen_US
dc.subjectLitter sizeen_US
dc.titleInjection of vitamin A at insemination and reproductive performance in giltsen_US
dc.typeConference paperen_US

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