Czech Journal of Animal Science, 2017 (vol. 62), issue 8
Effect of glutamine and/or probiotic (Enterococcus faecium) feed supplementation on piglet performance, intestines structure, and antibacterial activityOriginal Paper
Ewa Hanczakowska, Małgorzata Świątkiewicz, Małgorzata Natonek-Wiśniewska, Krzysztof Okoń
Czech J. Anim. Sci., 2017, 62(8):313-322 | DOI: 10.17221/20/2016-CJAS 
The effect of glutamine and/or probiotic (Enterococcus feacium) supplements on piglet performance, intestines structure, and microbial status was estimated on 181 piglets (16 litters) of Polish Landrace. The piglets were allocated to 2 groups with 8 litters in each, kept in group pens, and fed a standard feed mixture (negative control, group C) or the same mixture supplemented with 2% of glutamine (Group GT). In each group half the animals received Cylactin® added in the amount of 0.35 × 109 CFU per kg feed. The probiotic consists of dehydrated cells of Enterococcus faecium strain NCIMB 10415. Feed and water...
Effect of the source and level of carotenoids in diets on their retention in eggsOriginal Paper
Věra Skřivanová, Michaela Englmaierová, Markéta Bendová, Miloš Skřivan
Czech J. Anim. Sci., 2017, 62(8):323-330 | DOI: 10.17221/17/2017-CJAS
The lutein and zeaxanthin deposition in egg yolks of hens was evaluated. The effects of various levels of extracts from Mexican marigold flowers in hen diets were compared in Experiments 1 (from 0 to 350 mg/kg) and 2 (from 0 to 950 mg/kg). In Experiment 3, the sources of carotenoids such as lutein (250 mg/kg) and Chlorella (12.5 g/kg) were examined. All three experiments were conducted using brown egg layers housed in enriched cages. The lutein concentrations in yolks were increased (P < 0.05) from 0.141 to 0.232 mg/60 g of egg (Experiment 1) and from 0.096 to 0.283 mg/60 g of egg (Experiment 2). A similar trend was observed for...
Effects of dietary conjugated linoleic acid on lipid peroxidation in breast and thigh muscles of broiler chickensOriginal Paper
Yongxiang Liu, Guopan Tang, Jianping Yang, Wantao Li
Czech J. Anim. Sci., 2017, 62(8):331-338 | DOI: 10.17221/95/2016-CJAS
The effect of dietary supplementation with conjugated linoleic acid (CLA) on lipid peroxidation in the breast muscles (Pectoralis major and Pectoralis minor) and thigh muscles of broiler chickens was investigated. A total of ninety-six 21-day-old Arbor Acres male broiler chickens were assigned to 2 dietary treatments (0 and 1.5% CLA) with 8 replicates per 6 chickens each. The left breast and thigh muscles of broiler chickens were excised on day 42. The broilers receiving the CLA diet exhibited lower malondialdehyde content and reactive oxygen species production (P < 0.01) in the breast and thigh muscles than the broilers...
Amino acid levels in muscle tissue of eight meat cattle breedsOriginal Paper
Josef Vopálenský, Pavel Suchý, Eva Straková, František Šimek, Miroslav Macháček, Ivan Herzig
Czech J. Anim. Sci., 2017, 62(8):339-346 | DOI: 10.17221/96/2016-CJAS
Ten clinically healthy bulls equal in weight were chosen from eight meat cattle breeds maintained in the same geographical conditions using the extensive grazing method. After slaughtering, muscle tissue samples were taken from the musculus longissimus and pars thoracis, and dry matter, nitrogenous substances, fat, and the levels of essential (EAAs) and non-essential (NEAAs) amino acids were determined. Significant differences were found between the monitored genotypes in the contents of dry matter, nitrogenous substances, fat, EAAs, and NEAAs (P ≤ 0.05). The highest concentrations of nitrogenous substances in muscle tissue...
Growth, carcass, and physiological traits of growing male China Micro-ducks fed various levels of dietary crude fibreOriginal Paper
Shui Ping Wang, Wen Juan Wang, Da Sheng Yang, Xue Li Zhao, Dong Mei Luo, Yi Bing Guo
Czech J. Anim. Sci., 2017, 62(8):347-356 | DOI: 10.17221/5/2017-CJAS
The objective of this study was to evaluate the responses of growth performance, organ development, carcass characteristics, and serum biochemical parameters to the diets with different levels of crude fibre (CF) in growing male China Micro-ducks (CMD). A total of 240 nineteen-day-old CMD were blocked on the basis of body weight, and then randomly allocated to four treatments, each with 6 replicate pens of 10 ducklings. The formal feeding experiment lasted for 35 days. The CF levels for four diets were 16.7, 42.6, 77.9, and 101.6 g/kg of dry matter (DM), respectively. The diet with the CF level of 101.6 g/kg of DM resulted in the first-rank growth...