Czech Journal of Animal Science, 2019 (vol. 64), issue 8
In vitro antimicrobial effect of palm oils rich in medium-chain fatty acids against mastitis-causing Gram-positive bacteriaOriginal Paper
Klára Laloučková, Lucie Malá, Paula Slaničková, Eva Skřivanová
Czech J. Anim. Sci., 2019, 64(8):325-331 | DOI: 10.17221/66/2019-CJAS 
Various pathogens causing mastitis in dairy cattle are of serious concern due to their increasing antibacterial resistance and potential transmission to other cows, calves, and the environment, especially through the milking process. Therefore, alternative approaches to antimicrobial usage in the treatment or control of mastitis in dairy cattle are severely needed. The antibacterial effect of medium-chain fatty acids (MCFAs) is known to be significant for various pathogens, but there is only limited information about the activity of MCFAs on mastitis-causing pathogens. Moreover, no evidence about the antimicrobial effects of palm oils rich in MCFAs,...
Comparative metabolomic analysis of caecal digesta between Jinhua pig and Landrace pigOriginal Paper
Yujie Gong, Xiaoting Zou, Wenrui Xia, Xueting Wen, Xiaojun Zhang, Yingping Xiao, Hua Yang
Czech J. Anim. Sci., 2019, 64(8):332-342 | DOI: 10.17221/43/2018-CJAS
The metabolic difference in caecal digesta between Jinhua pig and Landrace pig was compared. Twenty weaned piglets at 28 days of age, including ten Landrace pigs (a Western pig breed) and ten Jinhua pigs (a Chinese native pig breed), were randomly selected and allocated into two groups. The pigs were fed the same corn-soybean diet on the same pig farm. At the age of 240 days, all pigs of each group were slaughtered, the digesta in the caecum of the twenty pigs were collected for metabolomic analysis and determination of short-chain fatty acids (SCFAs). The results showed that a total of 56 different metabolites (22 metabolites named and 34 metabolites...
Expression of NR3C1, INSR and SLC2A4 genes in skeletal muscles and CBG in liver depends on age and breed of pigsOriginal Paper
Dawid Szczepankiewicz, Marek Skrzypski, Ewa Pruszyńska-Oszmałek, Sławomir Sadkowski, Maciej Sassek, Tatiana Wojciechowicz, Paweł Antoni Kołodziejski, Przemysław Kaczmarek, Maciej Szydłowski, Paweł Maćkowiak, Krzysztof Wojciech Nowak
Czech J. Anim. Sci., 2019, 64(8):343-351 | DOI: 10.17221/5/2018-CJAS
The genes encoding glucose transporter 4 (SLC2A4, GLUT4), insulin receptor (INSR) and glucocorticoid receptor (NR3C1) are considered regulators of energy metabolism that may influence fat content in skeletal muscle at different ages and breeds of pigs. In the study we performed analysis of expression of NR3C1, INSR and SLC2A4 genes in two skeletal muscle tissues: semimembranosus and longissimus dorsi muscle in gilts from three breeds of pigs that differed in intramuscular fat content: Duroc (DU), Pulawska (PUL) and Polish Large White (PLW) at 60, 90, 120, 150, 180 and 210 days...
Multiple-factor associative effects of peanut shell combined with alfalfa and concentrate determined by in vitro gas production methodOriginal Paper
Jiu Yuan, Xinjie Wan
Czech J. Anim. Sci., 2019, 64(8):352-360 | DOI: 10.17221/94/2019-CJAS
The associative effects (AE) between concentrate (C), peanut shell (P) and alfalfa (A) were investigated by means of an automated gas production (GP) system. The C, P and A were incubated alone or as 40 : 60 : 0, 40 : 45 : 15, 40 : 30 : 30, 40 : 15 : 45, 40 : 0 : 60 and 30 : 70 : 0, 30 : 55 : 15, 30 : 40 : 30, 30 : 25 : 45, 30 : 10 : 60, 30 : 0 : 70 mixtures where the C : roughage (R) ratios were 40 : 60 and 30 : 70. Samples (0.2000 ± 0.0010 g) of single feeds or mixtures were incubated for 96 h in individual bottles (100 ml) with 30 ml of buffered rumen fluid. GP parameters were analysed using a single exponential equation. After incubation,...
Maternal effect on sports performance traits in horsesOriginal Paper
Tomasz Próchniak, Iwona Rozempolska-Rucińska, Grzegorz Zięba
Czech J. Anim. Sci., 2019, 64(8):361-365 | DOI: 10.17221/156/2018-CJAS
The aim of the study was to estimate the direct additive genetic effect and the additive maternal effect on the level of traits estimated during the Polish Jumping Championships for Young Horses. The investigations involved 541 stallions and 353 mares, which in total started in the Championships 1232 times. Variance and covariance components were estimated using the Gibbs sampling method. Heritability (h2) and repeatability (r2) coefficients as well as maternal effects (m2) were calculated for 7 sports performance traits. There was an additive maternal effect, ranging from 0.11 to 0.39, on the level of traits assessed...