this study was conducted at beresa watershed district of guraghe administrative zone, the southern regional state of ethiopia to evaluate the on-farm reproductive and egg production performances of local kei and its f1 crosses with fayoumi and rhode island red (rir) chicken breeds under farmers’ management. the local kei paternal line was mated with maternal lines of fayoumi and rir chickens to...

Background Ghezel sheep are highly prolific and one of the local sheep breeds in Iran and Turkey. Growth differentiation factor-9 (GDF9) gene has been found to be essential for growth and differentiation of early ovarian follicles. Novel mutations in GDF9 have been associated with increased ovulation rates and high litter sizes in heterozygous carriers. Therefore, fecundity gene for GDF9 (FecGH...

electrocardiographic study of 50 healthy markhoz goats ranging from less than 1 to more than 3 years inage was carried out. the heart rate varied from 99 to 123 beats/min with a mean of 110 beats/min. there wasa significant difference between the heart rate of goats in 3 age groups (pt waves and qt interval in base apex lead, qrs wave in lead i, p-r and pq interval in avf lead were higherand du...

this study aims at investigating the effectiveness of utilizing barley as a flushing ration with an energizing source and soybean meal-based diets as a flushing ration with a protein source the sexual and breeding behaviors in ghezel sheep. to this end, 36 three and half-year old ewes (51±1.5 kilograms) with the record of giving birth to two lambs and 6 three-year old (89±2.5 kilograms) rams we...

Genetic variation among sheep breeds in resistance to gastrointestinal nematodes (GIN) has been demonstrated in several production environments. Relationships between the ovine major histocompatibility complex and resistance to GIN have been studied, but few studies have systematically examined this issue in less-developed and semi-arid regions. The aim of the current study was to explore assoc...

the prevalence of the latent form of sheep abomasal phytobezoariasis and the effect of husbandry management on this condition were determined in a survey in and industrial abattoir in urmia from june 2005 to july 2006. the effect of different age groups and seasons on the prevalence of sheep abomasal phytobezoariasis was also determined. furthermore, the histological changes in the affected abo...