Czech Journal of Animal Science, 2015 (vol. 60), issue 2
Serotonin, GnRH-A, and dopamine interaction in the control of in vivo luteinizing hormone release in Prussian carp (Carassius gibelio Bloch) at the time of gonad recrudescenceOriginal Paper
M. Sokolowska-Mikolajczyk, D. Gajdzinski, G. Gosiewski, M. Socha
Czech J. Anim. Sci., 2015, 60(2):45-51 | DOI: 10.17221/7973-CJAS 
The effects of serotonin (5-HT), GnRH analogue (D-Ala6 LHRH, GnRH-A) and dopamine antagonist - pimozide (PIM), on luteinizing hormone (LH) release in mature Prussian carp female (Carassius gibelio Bloch) were examined at the time of gonad recrudescence. Fish were intraperitoneally injected with 5-HT (10 mg/kg), GnRH-A (20 μg/kg) or PIM (5 mg/kg) or the combinations: 5-HT+GnRH-A, 5-HT+PIM, 5-HT+GnRH-A+PIM. Before the injection and 3, 6, 12 or 24 h after treatment blood samples were collected for LH levels determination by ELISA method. The analysis of LH concentrations, expressed as the percentage of pre-treatment, showed that...
A mobile system for rearing meat chickens on pastureOriginal Paper
M. Skřivan, S.H. Pickinpaugh, V. Pavlů, E. Skřivanová, M. Englmaierová
Czech J. Anim. Sci., 2015, 60(2):52-59 | DOI: 10.17221/7974-CJAS
The effect of grazing on the productive performance and meat quality was evaluated for chickens (Ross 308, n = 192). Chickens were kept in two pens on wooden shavings (2 × 96) from one day of age. On day 23 of age, one group was moved to a pasture and kept in a portable floorless pen with an area of 0.11 m2 per chicken. The field portion of the experiment was conducted from the 1st till the 18th of June 2013. A control group was kept in the original pen until the end of the experiment at 6 weeks of age. Both groups were fed the same pelleted feed ad libitum. For the pasture-reared group, the moveable...
Association of the ADRB3, FABP3, LIPE, and LPL gene polymorphisms with pig intramuscular fat content and fatty acid compositionOriginal Paper
W. Xue, W. Wang, B. Jin, X. Zhang, X. Xu
Czech J. Anim. Sci., 2015, 60(2):60-66 | DOI: 10.17221/7975-CJAS
The aim of the present study was to investigate the associations of single nucleotide polymorphisms (SNPs) in candidate genes with fatness traits in the Longissimus dorsi muscle of pigs. The polymorphisms of genes were investigated, which included beta-3-adrenergic receptor gene (ADRB3), heart fatty acid-binding protein gene (FABP3), and hormone-sensitive lipase gene (LIPE) as well as lipoprotein lipase gene (LPL). The intramuscular fat (IMF) content and fatty acid composition contents in Longissimus dorsi muscle samples were measured. Results showed that ADRB3, LIPE, and LPL...
Comparison of the content of crude protein and amino acids in the whole bodies of cocks and hens of Ross 308 and Cobb 500 hybrids at the end of fatteningOriginal Paper
E. Straková, P. Suchý, P. Navrátil, T. Karel, I. Herzig
Czech J. Anim. Sci., 2015, 60(2):67-74 | DOI: 10.17221/7976-CJAS
Dry matter (DM), crude protein (CP), and the content of individual amino acids (AA) were determined in the bodies of Ross 308 and Cobb 500 hybrids including feathers after 40 days of fattening. Percentages for the content of individual AA were then calculated from the total sums of AA. The level of CP, irrespective of sex, was 453.16 ± 5.916 g/kg of DM for the Ross and 470.94 ± 5.404 g/kg of DM for the Cobb hybrid (P ≤ 0.05). For both hybrids, the content of CP was significantly (P ≤ 0.01) higher for cocks as opposed to hens. The AA levels in DM, irrespective of sex, were higher in the Cobb hybrid except for Glu;...
Genetic correlations between type traits of young Polish Holstein-Friesian bulls and their daughtersOriginal Paper
W. Jagusiak, A. Otwinowska-Mindur, E. Ptak, A. Żarnecki
Czech J. Anim. Sci., 2015, 60(2):75-80 | DOI: 10.17221/7977-CJAS
The objective of this study was to evaluate the usefulness of young bulls' conformation scores in a national type evaluation system. For this purpose the genetic correlations between conformation traits of sires and the same type traits of their daughters were estimated. Young bulls were evaluated as required for registration in the herd book and for entering progeny testing. Data were 7 linearly scored (1-9 scale) and 3 descriptive (scored from 50 to 100) conformation traits of 933 young bulls born between 2005 and 2008, and the same traits evaluated in their 65 479 daughters. A two-trait animal model was used to estimate genetic correlations between...
Conditions for cold stress development in dairy cattle kept in free stall barn during severe frostsOriginal Paper
S. Angrecka, P. Herbut
Czech J. Anim. Sci., 2015, 60(2):81-87 | DOI: 10.17221/7978-CJAS
The impact of low temperatures combined with higher velocity of ventilated air in winter during severe frost in a free stall barn on the development of cold stress in Holstein-Friesian breed dairy cattle was studied. The study included measurements of outside and inside air parameters and cows' milk yield. Cold stress was evaluated in three technological groups (TG) using the WCT (Wind Chill Temperature) index. During the research, significant temperature and wind velocity differences (by up to 5°C and 0.5 m/s) were recorded in three zones of the barn occupied by the individual TG. All this resulted in different values of WCT. During most severe frosts...