Effects of In Vitro Maturation and Fertilization of Cattle Ova on Rate of Twinning in Beef Cattle

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dc.contributor.advisorPerkins, Tommy L.
dc.contributor.authorBeck, David C.
dc.contributor.committeeMemberDavis, Bob
dc.contributor.committeeMemberMiller, Roy V., Jr.
dc.contributor.committeeMemberStapper, Michael W.
dc.date.accessioned2024-02-29T23:42:53Z
dc.date.available2024-02-29T23:42:53Z
dc.date.issued1994-12
dc.description.abstractAn experiment was conducted at Southwest Texas State University, San Marcos, to examine the effects of using in vitro matured and fertilized embryos in embryo transfer to induce twinning and examine the influence of twinning on cow production and carcass characteristics between single and twin calves. Fifteen single parity cows were estrus synchronized using the synthetic hormone implant Synchromate-B and ten first-calf heifers were given a 5 ml injection of lutalyse. Ovaries were collected from slaughterhouse cows from which oocytes were aspirated, matured and fertilized in vitro and nonsurgically transferred to 25 recipients, with 5 (20 percent) calves born alive from five first-calf heifers. Birthweight, head circumference, perietal, shoulder width, metacarpal length and width, and body length were recorded from the calves within 24 hours of calving in order to determine differences between effects of the sire and sex of the calf. In no case did any of the pregnant first-calf heifers produce twins.
dc.description.departmentAgricultural Sciences
dc.formatText
dc.format.extent53 pages
dc.format.medium1 file (.pdf)
dc.identifier.citationBeck, D.C. (1994). Effects of in vitro maturation and fertilization of cattle ova on rate of twinning in beef cattle (Unpublished thesis). Southwest Texas State University, San Marcos, Texas.
dc.identifier.urihttps://hdl.handle.net/10877/18158
dc.language.isoen
dc.subjectbeef cattle
dc.subjectreproduction
dc.subjectbreeding
dc.subjectfertilization in vitro
dc.subjecttwins
dc.subjecthormones
dc.titleEffects of In Vitro Maturation and Fertilization of Cattle Ova on Rate of Twinning in Beef Cattle
dc.typeThesis
thesis.degree.departmentAgriculture
thesis.degree.disciplineAgriculture
thesis.degree.grantorSouthwest Texas State University
thesis.degree.levelMasters
thesis.degree.nameMaster of Education

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