Czech Journal of Animal Science, 2022 (vol. 67), issue 7
The associative effects of sunflower straw, sunflower plate, sunflower seed shells associated with concentrate and alfalfa evaluated by using an in vitro gas production techniqueOriginal Paper
Jiu Yuan, Xinjie Wan
Czech J. Anim. Sci., 2022, 67(7):253-265 | DOI: 10.17221/51/2022-CJAS 
This study aimed to evaluate the multiple-factor associative effects (AEs) of concentrate (C) to sunflower straw (SS) to alfalfa (A) ratios, concentrate to sunflower plate (SP) to alfalfa ratios, concentrate to sunflower seed shell (SSS) to alfalfa ratios at 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, respectively, by using an in vitro gas production (GP) method. Thirty-three feed combinations and nine single feeds C, SS, A; C, SP, A; C, SSS, A were incubated respectively for 72 h in a GP tube. A total of 42 treatment combinations were...
Effect of carboxymethyl chito-oligosaccharide on cysteine absorption in intestinal porcine epithelial cellsOriginal Paper
Huayu Huang, Chen Zhang, Luqiu Feng, Naixiu Wang, Kai Wang, Zhenhui Song, Ling Gan
Czech J. Anim. Sci., 2022, 67(7):266-274 | DOI: 10.17221/138/2021-CJAS
Oxidative stress is associated with retarded growth and the initiation and progression of diseases in pigs. The carboxymethylation of chito-oligosaccharide (COS) can improve its antioxidant activity for such issues. Herein, an orthogonal experiment L9 (34) test design was used to optimise the preparation conditions of carboxymethyl (CM)-COS. Fourier-transform infrared analysis evidenced the carboxymethylation of COS, and an in vitro study indicated that the hydroxyl radical scavenging ability of CM-COS is superior to that of COS. CM-COS can also better promote the absorption of cysteine and increase the expression of the amino acid...
Effects of dietary Astragalus mongholicus, Astragalus polysaccharides and Lactobacillus on growth performance, immunity and antioxidant status in Qingjiaoma finishing broilersOriginal Paper
Fang Wei, Diliyaer Abulahaiti, Cheng Cheng Tian, Yan Chen, Su Su Jiang, Jian Xiong Lu, Guo Hua Zhang
Czech J. Anim. Sci., 2022, 67(7):275-285 | DOI: 10.17221/12/2022-CJAS
Three hundred 21-day-old male Qingjiaoma broilers were randomly assigned to six groups to investigate the effect of dietary stems and leaves of Astragalus mongholicus (AMSLs), Astragalus polysaccharides (APSs), Lactobacillus (Lac) and their combinations on finishing broilers in a 42-day feeding experiment. Supplementary 1% AMSLs, 1 000 mg/kg APSs and 4.5 × 1010 CFU/kg Lac improved significantly growth performance. Dietary AMSLs, APSs and Lac increased the serum concentrations of immunoglobulins IgA, IgG and complements C3 and C4. Furthermore, AMSLs increased glutathione peroxidase (GSH-Px) and superoxide...
Carcass characteristics and breast meat quality in fast-, medium- and slow-growing chickensOriginal Paper
Jaroslav Valenta, Darina Chodová, Eva Tůmová, Mohamed Ketta
Czech J. Anim. Sci., 2022, 67(7):286-294 | DOI: 10.17221/91/2022-CJAS
The aim of the present study was to compare carcass characteristics and meat quality of fast- (Ross 308), medium- (Hubbard JA757) and slow-growing (ISA Dual) chickens (n = 1 980). When the chickens reached an average live weight of 2 kg, 40 birds (males to females, 1 : 1) of each genotype were randomly selected and slaughtered for carcass analysis. Pectoralis major (PM) muscle samples were taken to determine the physical...