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dc.contributor.authorRigau, Alberto Pérezen_US
dc.date.accessioned2014-03-14T21:46:22Z
dc.date.available2014-03-14T21:46:22Z
dc.date.issued1993-06-15en_US
dc.identifier.otheretd-09192009-040524en_US
dc.identifier.urihttp://hdl.handle.net/10919/44875
dc.description.abstract

Eighty-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 similiar; 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.

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dc.format.mediumBTDen_US
dc.publisherVirginia Techen_US
dc.relation.haspartLD5655.V855_1993.R535.pdfen_US
dc.subjectFatty acidsen_US
dc.subject.lccLD5655.V855 1993.R535en_US
dc.titleAn assessment of the effects of dietary oil supplementation on fetal survival in gilts at 40 days of gestationen_US
dc.typeThesisen_US
dc.contributor.departmentAnimal Scienceen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineAnimal Scienceen_US
dc.contributor.committeememberWebb, Kenneth E. Jr.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-09192009-040524/en_US
dc.contributor.committeecochairKornegay, Ervin T.en_US
dc.contributor.committeecochairLindemann, M. D.en_US
dc.date.sdate2009-09-19en_US
dc.date.rdate2009-09-19
dc.date.adate2009-09-19en_US


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