The demand in the world market for high quality fine and superfine wool is increasing, responding to greater textile industry demands price incentives. There are few research studies focused on hair follicle population Merino sheep Uruguay. This study evaluates association between most relevant economical traits. work was carried out Ultrafine Australian (UAM) Dohne (DM) animals (lambs rams). P...

REINECKE, R. K. Studies on Haemonchus contortus l. The influence of previous exposure to Trichostrongylus axei on infestation with H . cantor/us. Onderstepoort J. vet. Res. 41 (4) , 213216 (1974) . A group of Merino sheep, aged 67 months was infested orally with 50 000 infective larvae of Trichostrongylus axei. This group and a control group were challenged 9092 days later with 50 000 infective...

Transferrin types were determined for flocks of Finnish Landrace, Clun Forest, Soay and Merino sheep and gene frequencies were calculated. Analysis of ratios of transferrin types in segregating matings of Finnish Landrace and Clun Forest revealed a significant excess of heterozygotes in matings of heterozygous rams with heterozygous and with homozygous ewes. In Finnish Landrace, matings of shee...

A grazing trial in Central Otago compared the effectiveness of feral goats, Angora goats and Merino sheep for sweet brier control. The three ammal types were set stocked in replicate 0.5 ha paddocks at 10 Angoras, 14 ferals and 12 Merinos per ha. Goats were also rotationally grazed on a 50 ha block at approximately 10 goats per ha. Goat grazing reduced living brie, in the trial paddocks to negl...

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...

Instead of attempting a full scale review, this paper concentrates on the area of group breeding, firstly reviewing the essential differences between group breeding schemes and the traditional stud ram breeding system, then briefly reviewing the recentfine tuning of the open nucleus ram breem programme of the Australian Merino Society, and final1 +e identifying research and development prioriti...

Molecular genetics provides an increasing capacity to modulate the function of individual genes, but the practical implications of these technologies are still poorly understood. This study examined adult Merino or Merino-cross sheep that had an additional copy of the ovine GH gene with a modified metal-lothionine promoter, which resulted in a doubling of the plasma concentration of GH. Previou...

Pástorová B. , Buleca J . , Pi l ipãinec, E. ·vick ̆, J . Szarek: Plasma Neuromediators and the Enzymatic Profile of Sheep. Acta Vet. Brno 2000, 69: 277-280. The study focused on the plasma norepinephrine and epinephrine and activity of selected plasma enzymes and LD isoenzyme spectrum in two sheep breeds (Slovak Merino and Improved Valachian) during the anoestrous period. Radioenzymatic method ...