Czech Journal of Animal Science, 2010 (vol. 55), issue 4
Economic values for traits of pigs in Hungary
L. Houška, M. Wolfová, I. Nagy, Z. Csörnyei, I. Komlósi
Czech J. Anim. Sci., 2010, 55(4):139-148 | DOI: 10.17221/100/2009-CJAS 
Marginal economic values for production and reproduction traits of pigs were estimated applying a bio-economic model to Hungarian commercial sow herds with integrated fattening of piglets. Data collected between 2002 and 2008 were used for the calculation. Marginal economic values (in € per unit of the trait per sow per year) estimated for fattening days in the station test, age at the end of the field test, lean meat percentage in the carcass, percentage of valuable cuts in the carcass and the number of piglets born alive were 2.84 €/day, 2.71 €/day, 22.45 €/%, 28.81 €/% and 54.22 €/piglet in the first litter, respectively.
Comparison of PRKAG3 and RYR1 gene effect on carcass traits and meat quality in Slovenian commercial pigs
M. Škrlep, T. Kavar, M. Čandek-Potokar
Czech J. Anim. Sci., 2010, 55(4):149-159 | DOI: 10.17221/6/2009-CJAS
The effect of polymorphisms at PRKAG3 (R200Q and I199V) and RYR1 (R615C) genes on carcass traits and meat quality was examined in a sample of 257 commercial pigs, crosses of Landrace × Large White as maternal line and Pietrain (N = 96), Pietrain × Landrace (N = 42) or Pietrain × Hampshire (N = 119) as paternal line. Pigs were genotyped (PCR-RFLP) and traits of interest were measured (which included carcass and ham weight, measurements of fatness, meatiness, ultimate pH, colour parameters and drip loss). The observed genotype frequencies at PRKAG3 gene were 9.7%, 38.9%, 32.7%, 6.2% and 12.5%...
Effects of long-term liquid commercial semen extender and storage time on the membrane quality of boar semen
S. Frydrychová, J. Čeřovský, A. Lustyková, M. Rozkot
Czech J. Anim. Sci., 2010, 55(4):160-166 | DOI: 10.17221/62/2009-CJAS
The objective of this study was to assess the sperm membrane integrity in extended boar semen during storage time using specific spectrum laboratory methods. Boar semen was diluted with the long-term liquid commercial extenders Androhep (A), Androstar (AS), Androstar plus (AS+), LD and M III and was stored up to 96 h. The sperm membrane integrity was evaluated by motility, viable spermatozoa, short hypoosmotic swelling test (sHOST) and by the activity of the enzyme aspartate aminotransferase (AST). Negative changes in the quality of sperm membrane in relation to storage time were observed after 48 h for sHOST, after 72 h for viable spermatozoa...
Effects of different levels of dietary supplemental caprylic acid and vitamin E on performance, breast muscle vitamin E and A, and oxidative stability in broilers
M. Skřivan, G. Dlouhá, M. Englmaierová, K. Červinková
Czech J. Anim. Sci., 2010, 55(4):167-173 | DOI: 10.17221/221/2009-CJAS
The paper reports data from four experiments (EXP). Broiler cockerels Ross 308 were allocated to 3 or 5 (EXP 4) dietary treatments comprising 300 (3 replicated pens of 100 chicks per pen), 50, 50 or 100 chickens. The EXP lasted 42, 38, 42 and 38 days. All basal diets contained adequate ingredients. The inclusion of 0.5% caprylic acid (CA) in diets reduced (P < 0.05) body weight (EXP 1). The results of EXP 3 and 4 indicated that the diet supplemented with 0.25% CA and 30 mg vitamin E (total vitamin E concentration 50 mg) resulted in similar BW like the basal diet, but the increased supplemental vitamin E to 150 mg (EXP 3) or to 100 mg (EXP...
Sperm motility and monthly variations of semen characteristics in Perca fluviatilis (Teleostei: Percidae)
S.M.H. Alavi, M. Rodina, A. Hatef, V. Stejskal, T. Policar, J. Hamáčková, O. Linhart
Czech J. Anim. Sci., 2010, 55(4):174-182 | DOI: 10.17221/118/2009-CJAS
Dynamics of sperm motility (sperm velocity, percentage of motility and flagellar beat frequency) and monthly variations of semen characteristics (semen volume and osmolality and sperm concentration and motility) were studied in Perca fluviatilis. This study showed that sperm velocity, percentage of motility and flagellar beat frequency significantly and rapidly decreased after the activation of sperm motility. Twelve spermiating males were randomly selected and electronically tagged to study monthly variations of semen characteristics. The semen was collected 4 times (29th November 2005, 10th January 2006, 21st...