Association between PrP genotypes and selected growth traits of Hungarian Merino and German Mutton Merino rams (Short Communication)
نویسندگان
چکیده
In sheep, susceptibility to scrapie is associated with the prion protein (PrP) gene polymorphism. In this study the association between selected growth traits (daily weight gain from birth to weaning and in farm fattening performance test, as well as body weight at one and two years) and PrP genotypes ARR/ARR, ARR/XXX and XXX/XXX (XXX representing AHQ, ARQ, ARH or VRQ) has been investigated in Hungarian Merino (n=286) and German Mutton Merino (n=215) rams. No significant association was found among the studied growth traits and the PrP genotypes in the Hungarian Merino breed. In case of a group of German Mutton Merino rams lamb daily gain was significantly (P≤0.05) – but in a small extent – associated with PrP genotype, which influenced the daily gain values by 9.6 %.
منابع مشابه
Genetic Parameters for Growth Traits of the Hungarian Merino and Meat Sheep Breeds in Hungary
Heritabilities and genetic correlations between weaning weight (WW) and average daily gain (ADG) for the Hungarian Merino, Ile de France, Charollais, German Mutton Merino, German Blackheaded, Texel, Fleisch Merino and Suffolk were studied. The selection of replacements is based on the two traits. The amount of records provided by the Hungarian Sheep Breeder’s Association and by the Hungarian Ag...
متن کاملBreeding for resistance to scrapie: Detection of polymorphisms in the prion protein gene in German sheep breeds
Scrapie is a fatal neurodegenerative disease of sheep and goats belonging to the group of transmissible spongiform encephalopathies (TSE). TSEs are characterised by distinctive pathology, the involvement of a hostencoded prion protein (PrP) in disease development and genetic control of susceptibility. Polymorphisms in three different codons of the ovine prion protein (PrP) gene (136, 154, 171) ...
متن کاملRelative performance and efficiency of five Merino and Merino-type dam lines in a terminal crossbreeding system with Dormer or Suffolk sires
The production performance of ewes was assessed in a terminal crossbreeding experiment involving five Merino and Merino-type dam lines and two terminal crossbreeding sire breeds. Dam lines were SA Mutton Merino (SAMM), SAMM rams crossed to Merino ewes (SAMM cross), Dohne Merino, as well as specialist Merino lines selected for clean fleece weight (FW+) and for an increased reproduction (Rep+). D...
متن کاملReproductive performance of commercial Merino, Dohne Merino and SA Mutton Merino flocks in the Southern Cape
Data of 23 189 Merino ewes (8 farms), 7692 Dohne Merino ewes (3 farms) and 2399 SA Mutton Merino ewes (1 farm) were recorded for the 1988-1991 lambing seasons. The udders of ewes present at lamb marking were inspected to differentiate between barren (unlambed), lambed and lost (lambed ewes suckling no progeny), and wet (lambed and suckling ~ 1 lamb) ewes, using the 'wet and dry' technique. The ...
متن کاملPrion protein (PrP) gene polymorphisms and breeding for resistance to scrapie in Polish Merino sheep
Genetic susceptibility or resistance of sheep to scrapie is associated with polymorphisms particularly in the three codons 136, 154 and 171 of the ovine prion protein (PrP) gene. The aim of the study was to reveal the PrP haplotype and genotype distribution in the Polish Merino breed and to make a forecast of the application of a scrapie resistance breeding programme for this breed. PCR-RFLP an...
متن کامل