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Origin and population structure of Brazilian hair sheep breeds
Animal Genetics, 2021SummaryBrazilian hair sheep constitute a genetic diversity hotspot. These animals are found in the harsh environments of the Brazilian Northwest (semi‐arid) region. Genotypes (50K SNP chip) from seven Brazilian sheep breeds (five hair and two coarse wool types) and 87 worldwide breeds were used to test for population structure, admixture and genetic ...
T. P. Paim +10 more
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Phosphorus kinetics in growing hair sheep
Small Ruminant Research, 2008Kinetics modelling was used to study the effects of different dietary phosphorus (P) levels on P metabolism in young sheep. An experiment was conducted with 12 Santa Inlambs receiving a basal diet of a hay-concentrate mixture. Different amounts of dicalcium phosphate were added to the basal diet, to give the following treatments levels of 0, 1.5, 3 and
H. Louvandini +3 more
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Mineral requirements of hair sheep in tropical climates
Journal of Animal Physiology and Animal Nutrition, 2016SummaryIn this study, we evaluated the requirements of calcium (Ca), phosphorus (P), magnesium (Mg), sodium (Na) and potassium (K) for sheep hair growth. Experimental diets contained different levels of metabolizable energy [ME; 0.96, 1.28, 1.72, 2.18 and 2.62 Mcal/kg of dry matter, (DM), corresponding to 4.23, 5.64, 7.58, 9.61 and 11.55 MJ/kg DM]. The
E S, Pereira +9 more
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Hair diameter distribution in sheep interspecies hybrids
Moscow University Biological Sciences Bulletin, 2013Hair diameter distribution was studied in wild sheep species (argali—Ovis ammon, mouflon—O. Musimon; domestic sheep—O. aries) and their hybrids. In wild species and their hybrids, rather distinctly separated subpopulations of thin (underwool) hairs (10–22 μm diameter) and thick (kemp) hairs (85–302 μm) were detected, and intermediate diameters were ...
E. B. Vsevolodov +6 more
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Reproductive seasonality in creole hair sheep in the tropic
Tropical Animal Health and Production, 2015The objective of the present study was to evaluate the annual ovulatory activity of hair sheep at 15° N. Nineteen Creole ewes with body weight of 40.8 ± 0.3 kg were used. The ovulatory activity was monitored for a year by quantifying progesterone concentrations in blood samples obtained from all the ewes every 7 days.
Jaime, Arroyo +4 more
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Hair Sheep Performance in Brazil
2019Hair sheep production in Brazil is centered in the northeast region bounded by latitudes Io N and 18° 307 S and longitudes 34° 307 W and 48° 20’ W. According to the Anuario Estatistico do Brasil, regional sheep population is estimated at 5,289,912 head. Hair sheep in Brazil include the Pelo do Boi, the generic term for the population of grades and true
E.A.P. de Figueiredo +3 more
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Reproductive behavior in hair sheep rams under tropical conditions
Tropical Animal Health and Production, 2019The reproductive efficiency of sheep herds depends to a great extent on the ram. Male reproductive evaluation allows to select for the best and eliminate those with reproductive problems. The objective was to evaluate the effect of breed and age group on the reproductive behavior of hair sheep rams in the tropics of Mexico.
Jesús Ricardo Aké-Villanueva +3 more
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