Test-day records of purebred Tsigai, Improved Valachian and Lacaune ewes were analysed with a general linear model in order to investigate the effects of flock-test day, lactation number, days in milk, litter size and month of lambing. In total, 121 576 (Tsigai), 247 902 (Improved Valachian) and 2 196 (Lacaune) test-day records gathered over the period 1995–2005 were included in the analyses. A...

Tsigai and Improved Valachian are the most spread sheep breeds in Slovakia. Both are multi-purpose breeds (Krupová et al., 2009), well adapted to local climate and environment. Tsigai is one of the oldest native breeds in areas from 500 to 800 m above sea level, mostly in the semi-extensive production system (Krupová et al., 2009), while improved Valachian is mostly kept in mountains and foothi...

Occurrence of the αS1-casein D allele (formerly "welsh" variant) in sheep breeds Tsigai, Improved Valachian and Slovak Merino was investigated by means of isoelectric focusing in ultra thin polyacrylamide gel. This variant in herds of the above mentioned breeds was observed as follows: Improved Valachian 3.64%; Tsigai 5.57%; Slovak Merino 12.45%. In the last mentioned breed in a single animal α...

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 ...

Selection for breeding animals as parents of next generation, based on genetic analyses of most important traits, became a standard for selection practices in most of the farm animal species in Slovakia. In this respect, about ten years of experience could be traced in Slovakian dairy cattle (Candrák et al., 1997) and pigs (Groeneveld and Peškovičová, 1999 and Peškovičová et. al., 1999). First ...

Tkáãiková a. , M. R. , Bhide I . Mikula: Asymmetric PCR-SSCP: a Useful Tool for Detection of OLA-DRB1(MHC class II) Gene Polymorphism in Slovak Improved Valachian Sheep. Acta Vet. Brno 2005, 74: 275-278. Detection of OLA-DBR1 (exon 2) gene polymorphism is presented in the paper. Rapid and inexpensive polymorphism detection method, namely, single stranded conformation polymorphism (SSCP) was ass...

The distribution of healthy and atretic follicles on the ovarian surface of improved Valachian ewes 17, 24, and 32 days postpartum is reported in this study. The number of healthy follicles was higher on day 24 postpartum and their mean diameter tended to increase to day 32 (P < 0.05) with the greatest diameter of 5 mm. 78-81% of atretic follicles ≥3 mm in diameter was observed where apoptosis ...