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Full-Text Articles in Life Sciences
Quantification And Repeated Measurements Of Conformation Traits In Replacement Females To Optimize Sow Longevity, Melanie D. Trenhaile Grannemann
Quantification And Repeated Measurements Of Conformation Traits In Replacement Females To Optimize Sow Longevity, Melanie D. Trenhaile Grannemann
Department of Animal Science: Dissertations, Theses, and Student Research
The objectives were to 1) assess the reliability of objective conformation trait measurements between evaluators, 2) evaluate effects of dietary energy and lysine during development and housing system during first gestation on longevity, reproductive performance, and conformation, 3) characterize conformation changes throughout life, 4) identify phenotypic associations between conformation and longevity, 5) estimate heritability of conformation traits, and 6) assess genetic relationships between conformation traits measured throughout life in sows. Sows (n = 622) were fed a standard, energy restricted, or standard energy with increased lysine diet during gilt development and housed in either a group pen or stall during …
Relationship Of Underline Scores And Production Traits In Beefmaster Cattle, Bryan R. Kutz
Relationship Of Underline Scores And Production Traits In Beefmaster Cattle, Bryan R. Kutz
Graduate Theses and Dissertations
The objective of this study was to establish the relationship of underline scores (UDLS), production traits, and conformation scores in Beefmaster cattle born between 1976 through 2008. Records provided by Beefmaster Breeders United (BBU) were analyzed. Certified classifiers approved by the BBU recorded scores. Sizes and shapes of the underlines differentiated the scores (1-4). A score of one was used to designate the least amount of navel flap or sheath and a score of four represents the maximum amount of naval flap or sheath accepted for registration in the BBU. In this study the relationship of the traits was determined …
Genetic Parameter Estimates Of Fear, Growth, And Carcass Characteristics In Japanese Quail, Doğan Nari̇nç, Bariş Aybars Genç
Genetic Parameter Estimates Of Fear, Growth, And Carcass Characteristics In Japanese Quail, Doğan Nari̇nç, Bariş Aybars Genç
Turkish Journal of Veterinary & Animal Sciences
The aim of this study was to estimate the heritability values of tonic immobility duration, several growth traits, and their genetic relationships with some slaughter traits. Fearfulness reaction was examined using tonic immobility (TI) response at 5 and 6 weeks of age. All birds were slaughtered at 6 weeks of age to measure carcass yield (CY), and percentage of breast (BY), leg (LY), wing (WY), abdominal fat (AFY). Heritability estimates for the TI durations and body weights measured at 5 and 6 weeks of age were 0.16, 0.20, and 0.46, 0.44, respectively. Heritability estimates for growth curve parameters and inflection …