Males are predicted to compete for reproductive opportunities, with sexual selection driving the evolution of large body size and weaponry through the advantage they confer for access to females. Few studies have explored potential trade-offs of investment in secondary sexual traits between different components of fitness or tested for sexually antagonistic selection pressures. These factors ma...

In this study, it was aimed to determine the effectiveness of transabdominal ultrasonographic imaging on 35th day pregnancy in determining status and number fetuses sheep. 69 Awassi sheep were used study. Sheep mated after oestrus synchronization during breeding season. On 50th days mating, a examination performed twice transabdominally each animal by ultrasonography. with single/multiple offsp...

myostatin or growth and differentiation factor 8 (gdf8), has been known as the factor causing double muscling phenotypes in which a series of mutations make the myostatin protein inactive, hence disabling it to regulate the deposition of muscle fibre. this phenotype happens with high frequency in a breed of sheep known as the texel. quantitative trait loci (qtl) studies show that a portion of t...

Association of genetic polymorphism in the calpastatin (CAST) gene with average daily gain was examined in Iranian purebred Kurdi sheep. The genotypes for CAST were determined by the PCR-SSCP method. Blood samples were collected from 84 purebred Kurdi sheep belonging to the Kurdi Breeding Station located in the Khorasan province, north-east of Iran. Extraction of genomic DNA was based on the Gu...

We evaluated the profitability of anthelmintic treatment and nutritional supplements using partial budget analysis on 108 weaned Menz (n=39), 50% Awassi-Menz (n=38) and 75% Awassi-Menz (n=31) crossbred sheep genotypes kept on-station under subclinical helminthosis at Debre Berhan, Ethiopia. Data were collected on feed intake, live weight, eggs per gram of faeces (EPG), packed cell volume (PCV),...

Background: With the increasing concern for health and nutrition, dietary fat has attracted considerable attention. The composition of fatty acids in the diet is important because they are associated with major diseases including cancers, diabetes, and cardiovascular disease. The fatty acid synthase (FASN) and stearoyl-CoA desaturase (delta-9-desaturase) (SCD) genes affect fatty acid compositio...

The industrialization since the beginning of previous century led to loss a significant number breeds. But it should be remembered, that disappearance breed is not only an important unit supplemented uniqueness specific landscape, met needs certain category people who lived in this territory, performed rituals associated with traditions and evolved complemented culture nation, but as well – gen...

Manchego sheep is the native breed in Castilla-La Mancha (a region of Spain). Its two main products are Manchego cheese and Manchego lamb, representing more than 50% of the final animal production in the region. Because of these economical implication and with the aim of improving Manchego sheep production, a selection scheme (called ESROM) based on the animal genetic merit was started fifteen ...

research results and facts of indigenous sheep production were reviewed with the aim of delivering relevant information for the beneficiaries. the common production system used in ethiopia was the extensive type, which was characterized by small flock sizes and the flock being periodically devastated by diseases. some indigenous sheep groups of the country were characterized and their names wer...

A study was conducted to determine the prevalence of ovine fasciolosis in Debre Berhan region based on clinical, abattoir and field survey from November 2007 to March 2008. Of total 475 ovine faucal samples examined 229 (48.21%) positive for fasciolosis. Sex wise Prevalence off sciolosis 73.05% in male and 26.95% in female animals. Statistical analysis of prevalence rate on sex basis showed no ...