Czech Journal of Animal Science, 2011 (vol. 56), issue 11
Analysis of polymorphism in the porcine TLR4 gene and its expression related to Escherichia coliF18 infection
W.B. Bao, L. Ye, Z.Y. Pan, J. Zhu, G.Q. Zhu, X.G. Huang, S.L. Wu
Czech J. Anim. Sci., 2011, 56(11):475-482 | DOI: 10.17221/3836-CJAS 
The genetic variation in exon 1 of the TLR4 gene was detected among a total of 893 animals, including Asian wild boars, 3 imported commercial and 10 Chinese indigenous pig breeds. The expression of TLR4 was assayed by RT-PCR and different expression between resistant and sensitive resource populations to ETEC F18 was analysed to discuss the role that the TLR4 gene plays in resistance. In this study, new alleles were detected in exon 1 of the TLR4 gene. These polymorphisms are significantly different between Chinese indigenous breeds and imported breeds. Based on the published TLR4 gene sequence (AB232527)...
Effect of size sorting on the survival, growth and cannibalism in pikeperch (Sander lucioperca L.) larvae during intensive culture in RAS
M. Szczepkowski, Z. Zakęś, B. Szczepkowska, I. Piotrowska
Czech J. Anim. Sci., 2011, 56(11):483-489 | DOI: 10.17221/3837-CJAS
The aim of the experiment was to determine the impact of sorting on the growth, survival, and cannibalism of pikeperch larvae during intensive culture in recirculation systems. Larvae aged 48 days post-hatch (DPH) were reared in three groups - small specimens (group S - average body weight 40 mg), large specimens (group L - average body weight 76 mg), and unsorted ones (group U - average body weight 55 mg). After three weeks of rearing, there were no statistically significant differences in specific growth rates among the groups. However, increases in biomass were higher in the sorted groups. Survival exceeded 50% in the sorted groups and 39% in group...
Interaction between housing system and genotype in relation to internal and external egg quality parameters
E. Tůmová, M. Englmaierová, Z. Ledvinka, V. Charvátová
Czech J. Anim. Sci., 2011, 56(11):490-498 | DOI: 10.17221/3838-CJAS
The effect of three housing systems (conventional cages, enriched cages and litter) on egg quality parameters was evaluated in two experiments with four brown laying strains ISA Brown, Hisex Brown, Bovans Brown and Moravia BSL. During 40 weeks of lay the total number of 7200 eggs was produced and analysed for egg weight, egg component weight and eggshell quality indicators. In 60 eggs, pore density in the small-end, large-end and equatorial areas was determined. Significant interactions between genotype and housing were found out in egg weight (P ≤ 0.001), yolk and albumen weight (P ≤ 0.001) and yolk colour (P ≤...
Porcine neonates failing vitality score: physio-metabolic profile and latency to the first teat contact
M.E. Trujillo-Ortega, D. Mota-Rojas, O. Juárez, D. Villanueva-García, P. Roldan-Santiago, M. Becerril-Herrera, R. Hernández-González, P. Mora-Medina, M. Alonso-Spilsbury, A.M. Rosales, R. Martínez-Rodríguez, R. Ramírez-Necoechea
Czech J. Anim. Sci., 2011, 56(11):499-508 | DOI: 10.17221/3839-CJAS
The objective of this study was to compare the metabolic and electrolytic profile as well as the morphological appearance of the umbilical cord and newly born piglets' weight that failed the vitality test scale compared to those who passed. Newborn piglets were divided into three groups according to the vitality with a modified Apgar score at birth: Group 1, failing with a score < 5 (G1: n = 218), Group 2 had a score of 6 to 7 (G2: n = 439) and Group 3 had scores > 8 (G3: n = 464). Results showed significant differences among groups (P < 0.05) in the physio-metabolic pH,...
Stability of Aberdeen Angus breeding values in the Czech Republic from 1997 to 2007
J. Ducháček, J. Přibyl, L. Stádník, L. Vostrý, J. Beran, L. Štolc
Czech J. Anim. Sci., 2011, 56(11):509-520 | DOI: 10.17221/3840-CJAS
We predict the stability of breeding values (BVs) for direct effect (DE) and maternal effect (ME) for live weights at 210 days of age in the entire population of purebred Aberdeen Angus cattle in the Czech Republic according to an increase of progeny number in performance recording over a period of 11 years (1997 to 2007) and the course of BVs for DE and ME during the years of observation in animals born until 1997. Furthermore we compare genetic trends of BVs for DE and ME among animals born in different years and detect the level and significance of correlation coefficients among predictions of BVs for DE and ME performed during the years of observation....