This study was conducted at Yabello district of Borana zone with the objectives evaluating productive performance 25% Dorper crossbred and local blackhead Somali sheep under agro pastoralists’ conditions, creating awareness, improving knowledge skill. The training given to selected pastoralists, development agents, experts on importance management improved sheep. A total four F1 50% were ...

Performance of Dorper sheep was compared to other breeds in pure and cross-breeding evaluations under different production systems. The number of ewes lambed per ewe joint (E(L)/E(J)) varied for the Dorper from 0.68 to 0.91 (average 0.81) and for other breeds and crosses from 0.65 to 0.91 (average 0.82). Average litter size (L(B)/lambing) varied from 1.02 to 1.52 (average 1.28) and from 1.02 to...

This paper reviews research being undertaken by ILRI and collaborators to identify Quantitative Trait Loci (QTL) for resistance to gastrointestinal (GI) nematodes in the resistant East African Red Maasai sheep and in inbred strains of mice. Six F1 rams, crosses of Red Maasai (resistant) and Dorper (susceptible) sheep, were bred and then backcrossed to pure Red Maasai and Dorper ewes to produce ...

We determined the polymorphism C242T of the aromatase gene (Cyp19) and its allelic frequency, as well as the effect of the variants on productive and reproductive traits in 71 purebred Santa Inês sheep, 13 purebred Brazilian Somali sheep, nine purebred Poll Dorset sheep, and 18 crossbred 1/2 Dorper sheep. The animals were genotyped using the PCR-RFLP technique. The influence of the animal's gen...

The study aimed to assess additive breed effects for growth (birth, weaning and ewe adult weight), fitness (lamb survival tick count under natural challenge) reproduction traits per mated in Dorpers, the most common meat South Africa (SA), SA Mutton Merino (SAMM) a prominent dual-purpose extensive environments. Additionally, reciprocal crosses between two breeds were used estimate dam heterosis...