Czech Journal of Animal Science, 2015 (vol. 60), issue 9
Comparison of models to estimate genetic parameters for scores of competitive sport horse events in the Czech RepublicOriginal Paper
A. Novotná, A. Svitáková, J. Schmidová
Czech J. Anim. Sci., 2015, 60(9):383-390 | DOI: 10.17221/8453-CJAS 
The objective of the present study was to estimate genetic parameters and predict breeding values of sport horses in the Czech Republic using animal model variations. The data set for the evaluation was composed of edited records of show jumping competitions in the Czech Republic in years 1991-2013. Input data were not normally distributed; hence Blom transformation was used for the variable filtration. The Gibbs sampling algorithm was used for the genetic parameters estimation. Two models were examined. The first was a random regression model including the effect of a horse's experience in competition (expressed as the length of the horse's sporting...
Suitability of BovineSNP50 BeadChip for the evaluation of the Cervidae family diversityOriginal Paper
R. Kasarda, N. Moravčíková, V. Šidlová, A. Trakovická, O. Kadlečík, J. Pokorádi, R. Židek
Czech J. Anim. Sci., 2015, 60(9):391-399 | DOI: 10.17221/8457-CJAS
Polymorphic SNPs were identified using BovineSNP50 BeadChip in three groups of cervids: farmed Red deer (n = 3), and free range Red deer (n = 5) and Fallow deer (n = 2). From the total of 54 609 SNPs, 53.85% could be genotyped. Out of 28 502 successfully genotyped autosomal SNPs only 5.3% were polymorphic. The average minor allele frequency within cervids was 0.23 (number of polymorphic SNPs ranged from 467 to 686). Results of the molecular variance analysis showed that 67.38% of variation occurred within individuals and the rest was explained by a species difference (FST = 0.32). The value of FIT...
Opioid-induced hypophagia is mediated by 5-HT2c receptors in neonatal layer-type chickenOriginal Paper
M. Shojaei, M. Zendehdel, V. Babapour, S. Charkhkar, S. Hassanpour
Czech J. Anim. Sci., 2015, 60(9):400-410 | DOI: 10.17221/8458-CJAS
Opioidergic and serotonergic (5-HTergic) systems have crucial role in central regulation of food intake. This study was designed to investigate the role of the opioidergic system and the interaction with the 5-HTergic system in opioid-induced feeding behaviour in 3-h food-deprived (FD3) neonatal layer-type chicks. In total 432 chickens were allocated into 9 experiments, each per 4 treatment groups. In Experiment 1, birds were intracerebroventricularly (ICV) injected with D-Ala2-NMe-Phe4-Glyol5-enkephalin (DAMGO), µ-opioid receptor agonist (125, 250, and 500 pmol). In Experiment 2, chickens were ICV treated with D-Pen2, D-Pen5enkephalin...
Allele frequency for c.335 A>C polymorphisms in porcine ghrelin/obestatin prepropeptide gene and association analysis with performance traits in various pig breedsOriginal Paper
K. Tanaka, T. Takizawa, O. Oki, K. Fukawa, T. Ito, M. Miyabe, H. Mannen, Y. Kurosawa, K. Hirose
Czech J. Anim. Sci., 2015, 60(9):411-416 | DOI: 10.17221/8459-CJAS
The allelic frequency of c.335A>C polymorphisms in the porcine ghrelin/obestatin prepropeptide (GHRL) gene was surveyed among six pig breeds and two subspecies of wild boars. The c.335C was the most frequent allele in Berkshire, Landrace, Large White, Yorkshire, and Clawn miniature pigs and Ryukyu wild boars (Sus scrofa riukiuanus), whereas c.335A was the most frequent allele in Duroc and Meishan pigs and Japanese wild boars (S. s. leucomystax). The association of c.335A>C with performance traits was analyzed in Duroc, Landrace, Large White, and (Landrace × Large White) × Duroc (LWD)...
Relationships between growth and body condition development during the rearing period and performance in the first three lactations in Holstein cowsOriginal Paper
M. Vacek, L. Krpálková, J. Syrůček, M. Štípková, M. Janecká
Czech J. Anim. Sci., 2015, 60(9):417-425 | DOI: 10.17221/8460-CJAS
The relationship between growth and development of body condition during the rearing of replacement heifers and their subsequent performance in the production period of Holstein cows in the Czech Republic was studied. The data set used in this study covered 733 Holstein heifers born on one farm during the years 2004-2009. The evaluated effects considered were body weight (BW), average daily gain of live weight (ADG), and body condition score (BCS) of heifers. The results demonstrated the desirable effect of the higher achieved ADG in the period before sexual maturity on the lower age at first calving (AFC), the positive influence on milk yield in the...