the main purpose of this study was to evaluate the influence of the photoperiod on the seminal traits of crossbreed wool-producing rams throughout on year period. for the effect of photoperiod two periods were considered: decreasing daylight length (summer and autumn) and increasing daylight length (winter and spring). for the study 5 baluchi × moghani (bl×mg) and 5 arkharmerino × moghani (am×m...

The present study was performed to evaluate the on-station growth performance of local and Dorper × local crossbred sheep in eastern Amhara region, Ethiopia. Data on 302 lambs collected over a 4-year period (2009 to 2012) on local and Dorper × local crossbred sheep at Sirinka breeding, evaluation and distribution site were used in this study. Fixed effects considered were breed, lamb sex, birth...

the present study was performed to evaluate the on-station growth performance of local and dorper × local crossbred sheep in eastern amhara region, ethiopia. data on 302 lambs collected over a 4-year period (2009 to 2012) on local and dorper × local crossbred sheep at sirinka breeding, evaluation and distribution site were used in this study. fixed effects considered were breed, lamb sex, birth...

A comparative slaughter trial was conducted to estimate the phosphorus (P) requirement for maintenance and growth of crossbred lambs of Dorper with a Chinese indigenous sheep breed, thin-tailed Han sheep. Thirty-five Dorper×thin-tailed Han crossbred, noncastrated ram lambs (20.3±0.22 kg of shrunk body weight (SBW)) were used. Seven lambs were randomly chosen and slaughtered at 20 kg SBW as the ...

Breed diversity is a valuable resource of the sheep industry. Crossbreeding systems use breed diversity to increase productivity relative to purebred flocks. Crossbreeding systems vary in managerial complexity and in use of beneficial effects due to crossbred ewes and lambs. Efficiency of meat production is maximized in terminal crossbreeding systems by use of specialized sire breeds to complem...

The purpose of this research was to evaluate differences in parasite resistance of Barbados blackbelly ewes and Suffolk crossbred ewes. 40 ewes were used for this study; 20 were Suffolk crossbreds and 20 were Barbados blackbelly. Fecal egg counts (FEC) verified that there were zero internal parasites in the sheep at the start of the experiment. The sheep were placed on a previously grazed pastu...

Lambs wool production and qualities from the progeny of 2 Merino and 2 Damara rams mated to Merino ewes were compared. The crossbred lambs produced about half the amount of wool and had high fibre diameter variation and medullated fibre components. Merino lambs wool was contaminated with pigmented and medullated fibres apparently transferred from continual exposure to the Damara crossbred lambs...

Abstract The physical and chemical properties structure of lamb fat are derived from the qualitative composition content saturated unsaturated fatty acids. Higher levels acid in sheep increase melting point yield a solid lard. Characteristic deposition carcass young is closely related to meat productivity nutritional value mutton. paper presents results prove influence genotype purebred Tsigai ...

Broad diversity among breeds of sheep is a precious industry resource. This breed diversity can be managed to increase performance and profit through use of crossbred ewes mated to rams of a terminal sire breed. Differences among breeds in performance for survival, growth, carcass, wool, and reproductive traits are due to the unique genetic history associated with each breed. Beneficial genetic...