Czech Journal of Animal Science, 2009 (vol. 54), issue 8

Effect of wheat gluten and extracted, protected soybean meal addition to the diet of cows with different beta-lactoglobulin genotypes on the composition and physical properties of milk

T. Szulc, M. Pawelska-Góral, K. Hajduk

Czech J. Anim. Sci., 2009, 54(8):341-348 | DOI: 10.17221/1734-CJAS  

The effect of wheat gluten or extracted soybean meal (300 g of crude protein/head/day) on milk yield, composition and its physical properties was analysed in 53 cows of Polish Holstein-Friesian breed with different milk beta-lactoglobulin (blg) genotypes (AA, AB and BB). The addition of wheat gluten to the diet of cows with the AA and AB blg genotypes caused a significant increase in crude protein (by 0.21; P ≤ 0.05, and 0.19%; P ≤ 0.01), casein (by 0.15; P ≤ 0.05, and 0.15%; P ≤ 0.01) and dry matter content (0.3 and 0.5%; P ≤ 0.05) in milk, and a significant increase in beta-casein production (0.6...

Effects in genetic evaluation for semen traits in Czech Large White and Czech Landrace boars

J. Wolf, J. Smital

Czech J. Anim. Sci., 2009, 54(8):349-358 | DOI: 10.17221/1658-CJAS  

Data on 75 567 ejaculates from 1 417 boars of the breeds Czech Large White and Czech Landrace collected in 23 AI centres between 2000 and 2007 were analyzed. Fixed effects were estimated from a four-trait animal model for semen volume, sperm concentration, motility and percentage of abnormal spermatozoa and from single-trait animal models for the total number of spermatozoa and the number of functional spermatozoa. Both the total number of spermatozoa and the number of functional spermatozoa were highest in winter and lowest in summer. Boar's age had a strong influence on semen volume, the total number and the functional number of spermatozoa; these...

Porcine perilipin (PLIN) gene: Structure, polymorphism and association study in Large White pigs

Z. Vykoukalová, A. Knoll, S. Čepica

Czech J. Anim. Sci., 2009, 54(8):359-364 | DOI: 10.17221/1661-CJAS  

Perilipin, encoded by the PLIN gene, is a lipid droplet-associated phosphoprotein that functions as a key regulator of triacylglycerol storage and hydrolysis in adipocytes. In this study, structure and variability of the porcine PLIN gene were characterised. PCR fragments encompassing exons 1 to 9 and interspersed introns were sequenced and the obtained sequence was deposited in EMBL/GenBank/DDBJ databases (AM931171). Seven silent polymorphisms and one nonsynonymous polymorphism were detected in the coding sequence. The nonsynonymous polymorphism g.627G>A causing an amino acid substitution p.Val3Ile was found only in Meishan and Meishan...

The relationship between culling rate, herd structure and production efficiency in a pig nucleus herd

L. Houška

Czech J. Anim. Sci., 2009, 54(8):365-375 | DOI: 10.17221/1660-CJAS  

Computer simulation of sow culling was run in a nucleus herd. The specified constant culling rate from 15 to 21% was simulated for all parities. The resultant different age structure of a herd was studied from the aspect of piglet production and other production indicators. With increasing culling rate the percentage of mated gilts was increased in order to maintain the constant size of the sow herd. With 15% simulated culling, which required 17.09% of mated gilts, the percentage of sows at parity 1 and 2 and the percentage of sows at parities 3-5 were balanced (31.62% and 31.77%, respectively). Annual herd replacement was 37.62%. After five parities...

Enterococcus faecium CCM7420, bacteriocin PPB CCM7420 and their effect in the digestive tract of rabbits

M. Pogány Simonová, A. Lauková, Ľ. Chrastinová, V. Strompfová, Š. Faix, Z. Vasilková, Ľ. Ondruška, R. Jurčík, J. Rafay

Czech J. Anim. Sci., 2009, 54(8):376-386 | DOI: 10.17221/1659-CJAS  

The effect of Enterococcus faecium CCM7420, bacteriocin-producing strain with probiotic properties and its partially purified bacteriocin PPB CCM7420 on growth performance, microflora, Eimeria sp. oocysts, biochemical blood parameters and glutathione-peroxidase activity in rabbits was determined. An increase in the body weight of rabbits (P < 0.01) was achieved after E. faecium CCM7420 application. A non-significant reduction of faecal E. coli (including haemolytic E. coli), coagulase-positive staphylococci (CPS) and Staphylococcus aureus was found in rabbits administered the E. faecium CCM7420...