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Publication
Efeito do genótipo da linha materna na margem bruta da exploração de bovinos aleitantes em cruzamento industrial
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Advisor(s)
Abstract(s)
Com o presente trabalho pretende-se avaliar a viabilidade económica de dois sistemas de cruzamento de bovinos aleitantes em sistemas extensivos no território nacional.
Os cruzamentos estudados neste trabalho são o cruzamento de fêmeas de raças autóctones portuguesas e o cruzamento de fêmeas cruzadas com machos de raças exóticas selecionadas para a produção carne.
A fim de avaliar a rentabilidade destas atividades inquiriu-se uma exploração agropecuária, detentora de vacas de raça mertolenga, raça preta e vacas cruzadas, todas em cruzamento terminal, sobre os custos e proveitos destes efetivos.
Contemplada essa informação, calcularam-se alguns coeficientes zootécnicos avaliadores das performances produtivas dos efetivos e elaboram-se para cada manada contas de atividade, com o objetivo de calcular a margem bruta de cada cruzamento. Com recurso a estas ferramentas equiparar-se os três sistemas produtivos de forma a conhecer qual o mais produtivo e eficiente.
ABSTRACT - The presente master thesis has the main goal of evaluate the economic viability of two crossbreeding systems in beef cattle on national territory. For this matter, we study two crossbreeding systems, one with females of portuguese breeads, and another whit crossed female, both with males of exotic breeds, selected to meat production. In order to evaluate the profitability of these activities we selected a portuguese farm, and we ask about the costs and income of their breeding systems. The farm we choose owns cows of three breeds : Mertolenga breed, Preta breed, and crossbread females. Regarding this information and with the support of spreadsheets, one for each herd, we evalueted some production coefficients and calculeted productive performances and the gross margin of each cossbreeding system. After we use this tools to match the three production systems in order to kown which is the most productive and efficient.
ABSTRACT - The presente master thesis has the main goal of evaluate the economic viability of two crossbreeding systems in beef cattle on national territory. For this matter, we study two crossbreeding systems, one with females of portuguese breeads, and another whit crossed female, both with males of exotic breeds, selected to meat production. In order to evaluate the profitability of these activities we selected a portuguese farm, and we ask about the costs and income of their breeding systems. The farm we choose owns cows of three breeds : Mertolenga breed, Preta breed, and crossbread females. Regarding this information and with the support of spreadsheets, one for each herd, we evalueted some production coefficients and calculeted productive performances and the gross margin of each cossbreeding system. After we use this tools to match the three production systems in order to kown which is the most productive and efficient.
Description
Dissertação de Mestrado em Engenharia Zootécnica/Produção Animal
Keywords
Bovinos aleitantes Sistema extensivo Cruzamento terminal Margem Bruta Beef cattle Extensive Production Crossbreeding Gross Margin
Pedagogical Context
Citation
Lacerda, A.L.M.C.P. (2016). Efeito do genótipo da linha materna na margem bruta da exploração de bovinos aleitantes em cruzamento industrial. Dissertação de mestrado. Universidade de Lisboa, Faculdade de Medicina Veterinária, Instituto Superior de Agronomia, Lisboa.
Publisher
Universidade de Lisboa, Faculdade de Medicina Veterinária e Instituto Superior de Agronomia