Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 3 of 3 for “"crossbreeding systems"”.
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Genetic evaluation and selection in multibreed populations
Crossbreeding is used widely in animal production, thus theory and methods for genetic evaluation and selection are required for multibreed populations. This study developed theory for modelling genotypic means and covariances which are required to obtain genetic evaluation by best linear unbiased …
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Evaluation of terminal sire breeds for hair sheep production systems
Terminal sire crossbreeding systems which improve growth performance while maintaining parasite resistance have the potential to enhance the profitability of hair sheep enterprises. Katahdin (KT, n = 4), Suffolk (SU, n = 3), and Texel (TX, n = 3) rams were randomly mated to KT ewes over two years …
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Evaluation of the impact of reproductive technologies on the genetic improvement and profit of pig production systems
Boar utilization efficiency and fertility play a significant role on the productivity and profitability of the U.S. pig industry. The impact of artificial insemination technique, semen preparation, and selection for semen traits on profitability and complementary financial indicators was evaluated …