Mycoplasma ovipneumoniae is an important respiratory pathogen of sheep across the world. In the present study nasal swab samples (n=778) were processed and 51isolates of M. ovipneumoniae were identified through biochemical tests and PCR. Difference in the isolation rate among districts (n=12), age groups (n=3), breads (n=6) was assessed. Similarly the isolate rate among healthy (n=513) and resp...

The aim of the present study was to evaluate genotypic distribution calpastatin (CAST) and insulin-like growth factor 1 (IGF1) gene polymorphisms in Tsigai sheep breed. Genomic DNA isolated from blood samples by phenol-chloroform method. A total 56 were genotyped PCR-RFLP Allele genotype frequencies calculated standard procedures. To population-genetic properties, Hardy–Weinberg Equilibrium (HW...

calpastatin has been introduced as an effective candidate gene as regards growth efficiency and meat quality traits. throughout the present study, blood sampling as well as carcass trait measurements were performed on 74 lori-bakhtiari sheep and on 40 zel-atabay cross-breds from industrial slaughterhouses of shahrekord and gorgan cities, respectively. following dna extaction, polymerase chain r...

Several studies have focused on polymorphisms of major histocompatibility complex (MHC) in sheep, Ovar-MHC. This molecule plays a pivotal role in antigen presentation for eliciting immune responses against invading pathogens. The best-characterized genetic control of disease resistance and immune response in animals is associated with MHC. Numerous molecular genetic investigations have been und...

An objective and accountable method is needed for deducing the number of registered animals in a breed from registration data. By following the principle that individual breeders register sufficient young females to be certain of having enough replacements for their current breeding stock, the ratios were calculated of the number of adult females in a breed to the number of female registrations...

Sumatera Composite (SC) sheep and Barbados Black Belly cross (BC) are two that have half the genetics of local (SL) sheep. Populations with partially same genetic composition sometimes difficult to distinguish. Based on female body size sheep, an analysis was carried out distinguish three breed relationship. The research conducted using SC, BC SL ewe measured in weight 8 sizes. Analysis varianc...

Growth differentiation factor 9 (GDF9) belong to the superfamily of transforming growth factor β that is highly expressed in growing ovarian follicles of oocyte, and it has been strongly related to fecundity traits in sheep. Therefore, the GDF9 gene could serve as a genetic marker for improvement of reproductive performance in sheep. Therefore, the aim of this study was to invest...

The worldwide production of sheep milk was 9,246,922 tonnes in 2009, whereas dairy cows produced 583,401,740 tonnes (FAOSTAT, at http://faostat.fao.org; accessed July 2011). The dairy sheep production is based on the utilization of local breeds of small or moderate effective and well adapted to local conditions in the different Mediterranean countries. This peculiarity contrasts with the "Holst...

The Small Tailed Han is a prolific local sheep breed in China. The bone morphogenetic protein receptor IB (BMPR-IB) gene, which affects the fecundity of Booroola Merino sheep, and the bone morphogenetic protein 15 (BMP-15) gene, which affects the fecundity of Inverdale, Hanna, Belclare, Cambridge, and Lacaune sheep, were studied as candidate genes associated with the prolificacy of Small Tailed...