Czech Journal of Animal Science, 2021 (vol. 66), issue 11
Modelling the growth of rearing cattleOriginal Paper
Hanna Unterauer, Norbert Brunner, Manfred Kühleitner
Czech J. Anim. Sci., 2021, 66(11):441-449 | DOI: 10.17221/98/2021-CJAS 
Scientific growth literature often uses the models of Brody, Gompertz, Verhulst, and von Bertalanffy. The versatile five-parameter Bertalanffy-Pütter (BP) model generalizes them. Using the least-squares method, we fitted the BP model to mass-at-age data of 161 calves, cows, bulls, and oxen of cattle breeds that are common in Austria and Southern Germany. We used three measures to assess the goodness of fit: R-squared, normalized root-mean squared error, and the Akaike information criterion together with a correction for sample size. Although the BP model improved the fit of the linear growth model considerably in terms of R-squared,...
Molecular cloning, functional characterization, tissue expression and polymorphism analysis of buffalo PRDX6 geneOriginal Paper
Lihua Qiu, Xinyang Fan, Xiaohong Teng, Pei Wang, Yongwang Miao
Czech J. Anim. Sci., 2021, 66(11):450-458 | DOI: 10.17221/42/2021-CJAS
PRDX6 is a bifunctional protein involved in antioxidant regulation and phospholipid metabolism. Previous studies have shown that PRDX6 is involved in some biological pathways and networks related to lactation. The aim of this study was to explore the characteristics, function, tissue expression and variation of buffalo PRDX6 gene. We cloned and characterized the complete coding sequence (CDS) of buffalo PRDX6. The CDS of PRDX6 for swamp and river buffalo is the same, which consists of 675 nucleotides and encodes a protein of 224 amino acids. Buffalo PRDX6 contains one PRX_1cys functional domain (AA 7-222), which is probably...
Comparison of early-life jejunal microbiota diversity in two pig breedsOriginal Paper
Yuting Yang, Huan Gao, Jinming Ran, Ying Huang, Minghua Yang, Lijie Yang, Sumei Zhao, Shiyan Qiao, Hongbin Pan
Czech J. Anim. Sci., 2021, 66(11):459-469 | DOI: 10.17221/63/2021-CJAS
The pig intestinal microbiota perform multiple physiological functions during the lifespan of the host. Host genetics is considered a major factor shaping the intestinal microbiota. This study explored the jejunal microbial diversity and potential functional differences between Dahe (DH) and Diannan small-ear (DS) pigs, two important native Chinese breeds with different growth characteristics. Nine piglets of each breed (DH and DS) were fed sow milk until the age of 35 days. Jejunal chyme samples were collected for 16S rRNA sequencing. The birth weight, final body weight at day 35, and average daily gain tended to increase more in DH piglets than in...
Effects of chop lengths of ramie silage on ruminal fermentation, free amino acid content, and cellulase activity in goatsOriginal Paper
Shengnan Sun, Gongxuan Chen, Zhenping Hou, Xuelei Zhang, Guitao Jiang, Duanqin Wu
Czech J. Anim. Sci., 2021, 66(11):470-475 | DOI: 10.17221/6/2021-CJAS
Twelve Liuyang black goats were selected and divided into three groups in a randomized design and they were provided one of the three treatment diets with different chop lengths of ramie silage [1 cm (RS1), 2 cm (RS2), and 3 cm (RS3)]. The length had no effect on pH or the content of acetic acid, butyric acid, and valeric acid. In contrast, NH3-N decreased (P = 0.024) and the ratio of acetate to propionate (P = 0.083) and total volatile fatty acid (TVFA) content (P = 0.087) tended to decrease, and the proportion of propionic acid tended to increase (P = 0.096) with an increase in the chop length of ramie....