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An assessment of the effects of dietary oil supplementation on fetal survival in gilts at 40 days of gestation

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dc.contributor.authorRigau, Alberto Pérezen
dc.contributor.committeecochairKornegay, Ervin T.en
dc.contributor.committeecochairLindemann, M. D.en
dc.contributor.committeememberWebb, Kenneth E. Jr.en
dc.contributor.departmentAnimal Scienceen
dc.date.accessioned2014-03-14T21:46:22Zen
dc.date.adate2009-09-19en
dc.date.available2014-03-14T21:46:22Zen
dc.date.issued1993-06-15en
dc.date.rdate2009-09-19en
dc.date.sdate2009-09-19en
dc.description.abstractEighty-six crossbred (Duroc x Yorkshire) gilts were used in two trials (50 gilts in Trial 1 and 36 gilts in Trial 2) for an assessment of the effect of supplemental dietary fat during early gestation on fetal survival, fetal development, and fatty acid concentration in gilt plasma and fetal head and body. Three diets contained 4% (w/w) added fat either as coconut, soybean, or fish (menhaden) oils. A fourth diet was used as a control. On d 37 to 45 postbreeding, gilts were slaughtered and numerous fetal and ovarian measurements made. Two sets of four randomly selected fetuses per gilt from Trial 1 were prepared. Blood samples from each gilt were obtained on the day of slaughter for determination of the plasma fatty acid profile. Across both trials, percentage fetal survival did not differ according to treatment, but in Trial 2 fetal survival was higher (P < .06) for gilts fed fish oil, compared with the controls. The fatty acid profile of plasma of gilts and the conceptus tissues were similar; both were influenced by the fatty acid concentration of the diets. The ratio of n-3/n-6 fatty acids was higher in conceptus tissue than in maternal plasma and the ratio was higher (P < .05) for the fish oil diet compared with the other diets. The relatively high concentration of omega-3 fatty acids in fetal tissues supports the hypothesis that omega-3 fatty acids play a role in the development of the pig conceptus and contributes to improve fetal survival. However, the high percentage fetal survival observed in all the treatments may have masked benefits of supplemental oil.en
dc.description.degreeMaster of Scienceen
dc.format.extentx, 90 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-09192009-040524en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-09192009-040524/en
dc.identifier.urihttp://hdl.handle.net/10919/44875en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1993.R535.pdfen
dc.relation.isformatofOCLC# 29046712en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1993.R535en
dc.subject.lcshFatty acidsen
dc.subject.lcshLivestock -- Embryos -- Mortalityen
dc.subject.lcshOils and fats in animal nutritionen
dc.subject.lcshSowsen
dc.subject.lcshSwine -- Fetusesen
dc.titleAn assessment of the effects of dietary oil supplementation on fetal survival in gilts at 40 days of gestationen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineAnimal Scienceen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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