Thesis (M.S.)--University of Missouri-Columbia, 2007. / The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on March 31, 2008) Vita. Includes bibliographical references.

Thesis (M.Sc.(Agric.)) -- University of Pretoria, 2008. / Abstract in English. Includes bibliographical references.

Thesis (Ph.D.) -- Mississippi State University. Department of Animal and Dairy Sciences. / Title from title screen. Includes bibliographical references.

Thesis (M.N.A.S.)--Missouri State University, 2008. / "December 2008." Includes bibliographical references (leaves 31-37). Also available online.

Thesis (M.S.)--University of Tennessee, Knoxville, 2004. / Title from title page screen (viewed Oct. 04, 2004). Thesis advisor: F. Neal Schrick. Document formatted into pages (xiii,105 p. : ill.). Vita. Includes bibliographical references (p. 86-104).

Thesis (Ph. D.)--University of Alberta, 2010. / Title from pdf file main screen (viewed on April 6, 2010). Spring 2010. At head of title: University of Alberta. A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Agricultural and Resource Economics, Department of Rural Economy. Includes bibliographical references.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1978. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 172-173).

Thesis (M.S.)--University of Missouri-Columbia, 2006. / The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed Aug. 27, 2007). Includes bibliographical references.

No description available.

O presente estudo procurou avaliar as características de carcaça,qualidade e o perfil lipídico da carne atrelado à espessura de gordurasubcutânea das carcaças (EGS), utilizando o peso de abate como covariável. Os dados obtidos oram analisados por teste estatístico de analise de variância e a nível de 10% de significância, e posteriormente feita a análise de regressão para as variáveis que apresentaram diferença significativa. A qualidade da carcaça e da carne é influenciada pela espessura de gordura subcutânea interferindo no peso de carcaça quente e fria, e consequentemente nos seus rendimentos. O peso de carcaça quente (PCQ) é a principal forma de remuneração ao produtor pelos frigoríficos, aplicando-se valores de 6 mm de gordura subcutânea, em um animal com peso de abate de 450 kg na equação (PCQ=-23,77+0,60*PA+1,99*EG+0,32*EG²), encontra-se o valor de 269,69 kg de peso de carcaça quente, para peso de carcaça fria (PCF) utilizando os mesmos valores na equação (PCF=-11,86+0,56*PA+1,64*EG), o animal apresentara em média 249,98 kg de PCF. Ocorreram diferenças significativas para as porções teciduais do animal, com decréscimo da fração osso e aumento das frações músculo e gordura, conforme se aumentou a espessura de gordura subcutânea na carcaça. Para a qualidade organoléptica da carne,não ocorreram respostas significativas ao grau da espessura de gordura subcutânea. Nas análises do perfil lipídico, os ácidos graxos saturados (AGS)não sofrem alteração com o aumento da espessura de gordura na carcaça, ao contrário dos ácidos graxos insaturados (AGI), que aumentaram de forma quadrática até o ponto de 5,8 mm de espessura de gordura. Para os poliinsaturados ocorreu diferença significativa linear decrescente, para os monoinsaturados apresentaram foi encontrado efeito quadrático (AGM=14,27+0,037*PA+4,22*EG-0,31*EG²). Dentre os principais ácidos graxos encontrados na carne bovina, o C14:0 não demonstrou diferença significativa, bem como o ácido graxo C18:0. Já o C16:0 demonstrou diferença significativa (P= 0,0095) apresentando 6,6 mm EGS como ponto de máximo. O Isômero C18:1ω9c, importante precursor na síntese do CLA, obteve comportamento quadrático atingindo valor máximo de 6 mm EGS. O CLA obteve resposta quadrática, a sua concentração aumenta até 6,9 mm de espessura de gordura, após essa espessura de gordura seus valores começam a decair. A relação entre os ácidos graxos ω6:ω3 não apresentam diferença significativa. O ω3 obteve resposta quadrática, aumentando sua deposição até 6,3 mm de espessura de gordura, após esse valor começa decair interferindo na boa relação entre ω6:ω3. A espessura de gordura subcutânea de 6,0 mm influência positivamente o peso e rendimento de caraça quente e fria, na quantidade de osso, músculo e gordura presentes na carcaça e nos ácidos graxos benéficos a saúde humana. / This study was develop to evaluate the carcass characteristics,quality and lipid profile linked to subcutaneous fat thickness (SFT) using the slaughter weight as a co-variable. The data were analyzed by statistical test for analysis of variance with a 10% level of significance, and subsequently made the regression analysis for the variables that showed significant differences. The carcass and meat quality was influenced by the subcutaneous fat thickness interfering in the hot and cold carcass weight, and consequently on their yields. The hot carcass weight (HCW) was the principal form of remuneration to farmers for slaughterhouses, applying values of 6 mm of subcutaneous fat thickness in an animal that was slaughter with weight of 450 kg in equation (HCW = 23,77+0,60*SW+1,99*FT+0,32*FT²), shows the value of 269.69 kg of hot carcass weight and cold carcass weight (CCW) using the same values in equation (CCW =-11,86+0,56*SW+1,64*FT), the animal had presented averaged 249.98 kg of CCW. There were significant differences for the portions of the animal tissue with decreased bone fraction and increased muscle and fat fractions, as increased the subcutaneous fat thickness in the carcass. For the organoleptic quality of meat, there were no significant responses for the different subcutaneous fat thickness level. In the analyzes of the lipid profile, the saturated fatty acids (SFA) do not change with increasing thickness of carcass fat, unlike the unsaturated fatty acid (UFA), which increased quadratically to the point of 5.8 mm fat thickness. The IFA were divided into monounsaturated (MUFA) and polyunsaturated fats, polyunsaturated occurred for linear significant difference decreasing. Monounsaturated responded quadratically (AGM = 14,27+0,037*SW+4,22*FT-0,31*FT²). Among the major fatty acids found in beef cattle, C14: 0 showed no significant difference as well as the fatty acid C18: 0. Have the C16: 0 present a significant difference (P = 0.0095) showing 6.6 mm SFT as the maximum point. The isomer C18: 1ω9c important in the synthesis of CLA obtained quadratic comportment present a maximum value of 6 mm SFT. The CLA obtained quadratic response, its concentration increases up to 6.9 mm subcutaneous fat thickness, after this fat thickness the CLA values begin to decline. The ratio between the fatty acids ω6:ω3 did not show different significance. The 3 obtained quadratic response, increase your deposition up to 6.3 mm of fat thickness, this value starts declining after interfering in good relationship between ω6: ω3. The fat thickness of 6.0 mm has positively influence in the weight and yield of hot and cold carcass, the amount of bone, muscle and fat present in the animal carcass and influences the beneficial fatty acids for human health.