Three native sheep breeds like Jamuna basin, Barind tract and Coastal belt that used to rear in semi-intensive systems three agro-ecological zones of Bangladesh. The quality meat is a multifactorial trait dependent on the perspective goals link production chain. In this review an attempt has been made present detail carcass traits attributes relation other breeds. Some factors influence lamb na...

The genetic structure of sheep reflects their domestication and subsequent formation into discrete breeds. Understanding genetic structure is essential for achieving genetic improvement through genome-wide association studies, genomic selection and the dissection of quantitative traits. After identifying the first genome-wide set of SNP for sheep, we report on levels of genetic variability both...

BACKGROUND Multiple births occur frequently in some Iranian sheep breeds, while infertility scarcely occurs. Mutation detection in major fecundity genes has been explored in most of Iranian sheep flocks over the last decade. However, previously reported single nucleotide polymorphisms (SNPs) for bone morphogenetic protein receptor-(BMPR)-1B and growth differentiation factor ) GDF9( known to aff...

The aim of this experiment was to study the effect of breed (Churra and Merino) and advancing season (middle June, late July and early October) on rumen fermentation in sheep grazing a continuously stocked grass /white clover pasture. Six mature sheep (three Churra and three Merino) fitted with rumen cannulae were used. During each grazing period, samples of the grazed herbage (obtained using t...

Analyses of birth and weaning weights, fleece weights of ewes, and number born per litter of Polypay sheep collected at the U.S. Sheep Experimental Station from 1978 through 1998, confirmed previous analyses of three other dual-purpose breeds that cytoplasmic effects do not contribute to variation in these four traits. In general, estimates of genetic parameters that would be needed for nationa...

Background: Many genomic imprinting left during long-term selective evolution may drive the formation of important economical traits introduced and indigenous sheep breeds. Methods: In this study, OvineSNP50 BeadChip data breeds GMM DOR breed Sunit were downloaded from public databases. Selective sweep base on Pi Fst strategy initially screened for a number candidate genes that could explain ge...

A total of 146 Menz and Horro lambs of both sexes were serially slaughtered and dissected at 5 different stages of growth (i.e. at 1, 3, 6, 9 and 12 months of age) to define the pattern of growth and partitioning of fat among body depots of indigenous Ethiopian Menz and Horro sheep breeds. The GLM procedure of SAS and an allometric growth equation were used to assess the effects of various fact...

Any producer contemplating the prospect of sheep dairying will face the problem of breeds: which breeds or what type of animals to purchase (or develop) in order to have the most economical commercial milk production? The problem is not an easy one to solve because there is not a single breed that combines all favorable traits. Some breeds are better than others in producing milk and others are...

The calcareous xerothermic grasslands of the Festuco-Brometea class are among most endangered Natura 2000 sites in Europe. greatest threats include a lack grazing, secondary succession, and invasive alien expansive native species. abandonment such is caused by low nutritional value biomass, as well difficult habitat conditions. aim this study was to assess physiological responses sheep breeds h...

An analytical model that evaluates the benefits from 10 years of genetic improvement over a 20-year time frame was specified. Estimates of recent genetic trends in recorded traits, industry statistics and published estimates of the economic values of trait changes were used to parameterise the model for the UK sheep and beef industries. Despite rates of genetic change in the relevant performanc...