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Articles 1 - 4 of 4
Full-Text Articles in Life Sciences
Usefulness Of Subjective Ovine Milk Scores: Ii. Genetic Parameter Estimates, G. D. Snowder, L. Dale Van Vleck, A. D. Knight, T. R. Kellom, C. M. Bromley
Usefulness Of Subjective Ovine Milk Scores: Ii. Genetic Parameter Estimates, G. D. Snowder, L. Dale Van Vleck, A. D. Knight, T. R. Kellom, C. M. Bromley
Department of Animal Science: Faculty Publications
Genetic parameters for a subjective milk score given to ewes within 24 h of parturition were estimated to determine the usefulness of milk score as a selection trait to improve milk production, which influences total litter weight weaned. Heritability of milk score and the genetic correlation of milk score with litter weight weaned were estimated by REML separately for four sheep breeds, Rambouillet (n = 1,731), Targhee (n = 1,638), Columbia (n = 1,731), and Polypay (n = 1,129). Litter weight weaned was the total weight of lambs weaned at approximately 120 d of age under a western range production …
Genetic Correlations For Litter Weight Weaned With Growth, Prolificacy, And Wool Traits In Columbia, Polypay, Rambouillet, And Targhee Sheep, L. Dale Van Vleck, C. M. Bromley, G. D. Snowder
Genetic Correlations For Litter Weight Weaned With Growth, Prolificacy, And Wool Traits In Columbia, Polypay, Rambouillet, And Targhee Sheep, L. Dale Van Vleck, C. M. Bromley, G. D. Snowder
Department of Animal Science: Faculty Publications
Total litter weight weaned at 120 d postpartum per ewe lambing is often believed to be a measure of range ewe productivity. Genetic correlations for litter weight weaned at 120 d with prolificacy, growth, and wool traits for Columbia, Polypay, Rambouillet, and Targhee sheep were estimated using REML with animal models. Observations per breed ranged from 5,140 to 7,083 for litter weight weaned, from 5,140 to 7,095 for prolificacy traits, from 7,750 to 9,530 for growth traits, and from 4,603 to 18,443 for wool traits. Heritability estimates for litter weight weaned were low and ranged from 0.02 to 0.11. Fraction …
Genetic And Phenotypic Parameters For Dietary Selection Of Mountain Big Sagebrush (Artemisia Tridentata Nutt. Ssp. Vaseyana [Rydb] Beetle) In Rambouillet Sheep, G. D. Snowder, J. W. Walker, K. L. Launchbaugh, L. Dale Van Vleck
Genetic And Phenotypic Parameters For Dietary Selection Of Mountain Big Sagebrush (Artemisia Tridentata Nutt. Ssp. Vaseyana [Rydb] Beetle) In Rambouillet Sheep, G. D. Snowder, J. W. Walker, K. L. Launchbaugh, L. Dale Van Vleck
Department of Animal Science: Faculty Publications
The heritability of diet selection for mountain big sagebrush (Artemisia tridentata Nutt. ssp. vaseyana [Rydb] Beetle) by grazing sheep was estimated from fecal samples collected from 549 Rambouillet ewes. Fecal samples were collected in September and October during 1996 and 1997 from free-grazing ewes on intermountain sagebrush-bunchgrass rangelands at the U.S. Sheep Experiment Station in Idaho. The total number of fecal samples was 1,949. Fecal samples were evaluated for composition of big sagebrush by near-infrared spectroscopy. Percentage of sagebrush in the diet was less in September than in October (21.6 vs 31.7%, respectively). Single-trait and bivariate derivative-free REML analyses …
The Phenotypic And Genetic Parameters Of Fattening Characteristics In The Ile De France X Akkaraman (G_1) Crossbred Lambs, Ayhan Eli̇çi̇n, Gürsel Dellal, Ali̇ Murat Tatar, Mir Cemal Celali Zoonooz
The Phenotypic And Genetic Parameters Of Fattening Characteristics In The Ile De France X Akkaraman (G_1) Crossbred Lambs, Ayhan Eli̇çi̇n, Gürsel Dellal, Ali̇ Murat Tatar, Mir Cemal Celali Zoonooz
Turkish Journal of Veterinary & Animal Sciences
In this research, the phenotypic parameters of fattening characteristics were determined and the of heritabilities of these traits were estimated in the Ile de France (IF) x Akkaraman (AK) (G_1) crossbreed male lambs. It was estimated that the widest genetic variation was daily live weight gain between the beginning of fattening and the 42nd and 56th day. It was concluded that the selection based on the daily live weight gain of the progenies to increase the meat yield in the IF X AK (G_1) sheep can be successful.