Academic literature on the topic 'Sheep Columbia sheep. Suffolk sheep. Targhee sheep'

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Journal articles on the topic "Sheep Columbia sheep. Suffolk sheep. Targhee sheep"

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Zhang, Lifan, Michelle R. Mousel, Xiaolin Wu, et al. "Genome-Wide Genetic Diversity and Differentially Selected Regions among Suffolk, Rambouillet, Columbia, Polypay, and Targhee Sheep." PLoS ONE 8, no. 6 (2013): e65942. http://dx.doi.org/10.1371/journal.pone.0065942.

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Davenport, Kimberly M., Stephanie McKay, Alan G. Fahey, Clare Gill, and Brenda M. Murdoch. "Meiotic Recombination Differences in Rams from Three Breeds of Sheep in the US." Cytogenetic and Genome Research 156, no. 2 (2018): 106–16. http://dx.doi.org/10.1159/000493175.

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Meiotic recombination is an important contributor to genetic variation and ensures proper chromosome segregation during gametogenesis. Previous studies suggest that at least 1 crossover (CO) per chromosome arm is important to avoid mis-segregation. While the total number of COs per spermatocyte is known to differ in mice, this is only beginning to be evaluated in sheep. This study used a cytogenetic approach to quantify and compare the number of COs per spermatocyte in rams from 3 breeds of sheep: Suffolk, Icelandic, and Targhee. In total, 2,758 spermatocytes and over 170,000 COs were examined
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Rao, S., and D. R. Notter. "Genetic analysis of litter size in Targhee, Suffolk, and Polypay sheep." Journal of Animal Science 78, no. 8 (2000): 2113. http://dx.doi.org/10.2527/2000.7882113x.

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Bergen, W. G., J. R. Busboom, and R. A. Merkel. "Leucine degradation in sheep." British Journal of Nutrition 59, no. 2 (1988): 323–33. http://dx.doi.org/10.1079/bjn19880039.

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1. In vitro leucine catabolism in adipose tissue, skeletal muscle, kidney and liver homogenates was studied in sheep.2. In Expt 1, Suffolk × Targhee ram lambs were slaughtered at 1, 28, 56, 84, 112, 140, 168, 196, 224 and 365 d of age. In Expt 2, 5-month-old crossbred wethers were fed on 80, 120 or 180 g crude protein (nitrogen × 6·25) /kg diets for 4 weeks or fed on 120 g crude protein/kg for 4 weeks and then fasted for 48 or 96 h before slaughter. Leucine catabolism was assayed in tissue homogenates for Expts 1 and 2.3. Leucine deamination (per unit protein) was highest in skeletal muscle at
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Cinar, Mehmet Ulas, Michelle R. Mousel, Maria K. Herndon, J. Bret Taylor, and Stephen N. White. "Association of TMEM8B and SPAG8 with Mature Weight in Sheep." Animals 10, no. 12 (2020): 2391. http://dx.doi.org/10.3390/ani10122391.

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Signature of selection studies have identified many genomic regions with known functional importance and some without verified functional roles. Multiple studies have identified Transmembrane protein 8B (TMEM8B)rs426272889 as having been recently under extreme selection pressure in domesticated sheep, but no study has provided sheep phenotypic data clarifying a reason for extreme selection. We tested rs426272889 for production trait association in 770 U.S. Rambouillet, Targhee, Polypay, and Suffolk sheep. TMEM8Brs426272889 was associated with mature weight at 3 and 4 years (p < 0.05). This
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Kuehn, L. A., R. M. Lewis, and D. R. Notter. "Connectedness in Targhee and Suffolk flocks participating in the United States National Sheep Improvement Program1." Journal of Animal Science 87, no. 2 (2009): 507–15. http://dx.doi.org/10.2527/jas.2008-1092.

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Snowder, G. D. "Characteristics of the American Polypay: A review." Animal Genetic Resources Information 29 (April 2001): 19–30. http://dx.doi.org/10.1017/s1014233900001371.

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SummaryThe Polypay sheep breed was developed at the U.S. Sheep Experiment Station with a reproductive capacity markedly superior to that of domestic US western range breeds. The Polypay is a four breed composite of Targhee, Rambouillet, Dorset and Finnish Landrace breeds. It is a medium-sized wool sheep (average mature ewe weight of 72 kg) with a smooth body free of excessive skin wrinkles on the neck and body and a poll head. Comparative studies with other US domestic breeds have shown the Polypay to have earlier sexual maturity higher fertility and prolificacy rates. Mature ewes give birth t
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Ercanbrack, S. K., and A. D. Knight. "Responses to various selection protocols for lamb production in Rambouillet, Targhee, Columbia, and Polypay sheep." Journal of Animal Science 76, no. 5 (1998): 1311. http://dx.doi.org/10.2527/1998.7651311x.

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Bromley, C. M., G. D. Snowder, and L. D. Van Vleck. "Genetic parameters among weight, prolificacy, and wool traits of Columbia, Polypay, Rambouillet, and Targhee sheep." Journal of Animal Science 78, no. 4 (2000): 846. http://dx.doi.org/10.2527/2000.784846x.

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Notter, D. R. "Effects of ewe age and season of lambing on prolificacy in US Targhee, Suffolk, and Polypay sheep." Small Ruminant Research 38, no. 1 (2000): 1–7. http://dx.doi.org/10.1016/s0921-4488(00)00144-9.

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Dissertations / Theses on the topic "Sheep Columbia sheep. Suffolk sheep. Targhee sheep"

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Abdulkhaliq, Ahed. "Estimation of phenotypic and genetic parameters for some reproductive traits in Columbia, Suffolk and Targhee sheep breeds." Connect to resource, 1986. http://rave.ohiolink.edu/etdc/view.cgi?acc%5Fnum=osu1244132589.

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