Fleece Phenotype Influences Susceptibility to Cortisol-induced Follicle Shutdown in Merino Sheep
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چکیده
منابع مشابه
Water Penetration into the Fleece of Merino Sheep Affected with Fleece Rot
Fleece rot was induced in 15 young Merino ewes by treatment with repeated application of simulated rain. Forty days after induction, treated and five control ewes were subjected to 50 mm of simulated rain which contained a water soluble dye. Treated ewes absorbed significantly more water than controls (2.3 kg to 1.5 kg). Wool samples were collected at ten cm intervals along the dorsal midline t...
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The contribution of genetic and phenotypic parameters affecting fleece traits in 3/4th bred 2425 Bharat Merino Lambs sired by 154 rams over period of 1982-96 was evaluated. The year and season of shearing, sex of lamb, type of birth, age and weight of lamb contributed 8 to 42% of the phenotypic variability in the fleece traits. The least square means for the first and second six monthly greasy ...
متن کاملThe effects of short-term manipulation of thyroid hormone status coinciding with primary wool follicle development on fleece characteristics in Merino sheep.
Thyroidectomy surgery performed late in gestation results in perturbations in wool follicle development in foetal sheep, showing the importance of thyroid hormones for wool follicle development. The aim of this study was to determine the influence of transient manipulation of thyroid hormone status at a time corresponding with foetal primary wool follicle initiation. Pregnant Merino ewes (n = 1...
متن کاملMerino Sheep Selected for Divergent Fleece Weight Do Not Differ in the Proportion of Sulphur-containing Keratin Wool Proteins M.bray
Sixteen, 18-month old Merino rams from the SARDI Selection Demonstration Flocks (SDFs) were selected for divergent estimated breeding values (EBVs) for wool production. All sheep had similar total follicle numbers and live weights, and were fed a high-S or a low-S containing diet for 6 weeks prior to the collection of wool samples. Wool growth rate (WGR) and wool S concentration were measured. ...
متن کاملEstimates of genetic and environmental (co)variances for live weight and fleece traits in yearling South African Mutton Merino sheep
Yearling live weight and fleece trait data were obtained from between 2214 and 2270 yearling SA Mutton Merino progeny of the Elsenburg flock during a 20-year period from 1983 to 2002. Information of (co)variances for these traits in SA Mutton Merinos is exceedingly scarce in the literature. Estimates of (co)variance components and ratios were thus obtained from these data, using an Animal Model...
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ژورنال
عنوان ژورنال: Asian-Australasian Journal of Animal Sciences
سال: 2007
ISSN: 1011-2367,1976-5517
DOI: 10.5713/ajas.2007.1761