Template-Type: ReDIF-Article 1.0 Author-Name: Eva Straková Author-Workplace-Name: Department of Animal Husbandry, Animal Nutrition and Biochemistry, Faculty of Veterinary Hygiene and Ecology, University of Veterinary Sciences Brno, Brno, Czech Republic Author-Name: Lucie Všetičková Author-Workplace-Name: Department of Zoology, Fisheries, Hydrobiology and Apiculture, Faculty of AgriSciences, Mendel university in Brno, Brno, Czech Republic Author-Name: Pavel Suchý Author-Workplace-Name: Department of Animal Husbandry, Animal Nutrition and Biochemistry, Faculty of Veterinary Hygiene and Ecology, University of Veterinary Sciences Brno, Brno, Czech Republic Author-Name: Martin Kutlvašr Author-Workplace-Name: Department of Animal Husbandry, Animal Nutrition and Biochemistry, Faculty of Veterinary Hygiene and Ecology, University of Veterinary Sciences Brno, Brno, Czech Republic Title: Effect of dehulled lupin seeds in feed mixture on muscle protein quality of ducklings Abstract: The aim of the study was to prepare and test the effect of diets with 50% and 100% replacement of soybean meal with dehulled seeds of white lupin (Lupinus albus) variety Zulika. One hundred and eighty Cherry Valley duckling were divided to control group (C) and two experimental groups E50 (50% replacement of soybean meal with dehulled white lupin meal) and E100 (100% replacement of soybean meal with dehulled white lupin meal). There were evaluated the production parameters and the amino acid spectrum of breast and thigh muscles up to 42 days of age. The effect of diets containing lupin meal had no negative effect on the yield of duckling. In particular, positively can be evaluated higher growth rate in the experimental groups compared to the control (C 3.22 ± 0.28 kg, E50 3.40 ± 0.27 kg, E100 3.48 ± 0.28 kg), at the same time significantly lower mortality in the experimental groups compared to the control (C 5.88%, E50 1.47%, E100 1.49%) and, except for E100, minimal differences in feed conversion ratio (C 2.33 kg/kg, E50 2.27 kg/kg, E100 2.71 kg/kg). Feeding diets based on lupin meal resulted in the reduction of most essential and non-essential amino acids (P ≤ 0.05) in the dry matter content of both breast and thigh muscle (E50, E100). Lupine meal-based diets positively influenced ducks' health, which was reflected by lower mortality rate in the experimental groups. Therefore, the results show that diets based on lupin meal had a positive effect on the health and welfare of intensively fattened ducks and that they affected positively the economic aspect of breeding. Keywords: amino acids, duck, fattening, Lupinus albus, utility Journal: Czech Journal of Animal Science Pages: 64-71 Volume: 70 Issue: 2 Year: 2025 DOI: 10.17221/9/2025-CJAS File-URL: http://cjas.agriculturejournals.cz/doi/10.17221/9/2025-CJAS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/cjs-202502-0001.txt Handle: RePEc:caa:jnlcjs:v:70:y:2025:i:2:id:9-2025-CJAS Template-Type: ReDIF-Article 1.0 Author-Name: Piotr Janiszewski Author-Workplace-Name: Department of Meat and Fat Technology, Prof. Wacław Dąbrowski Institute of Agricultural and Food Biotechnology-State Research Institute, Poznań, Poland Author-Name: Dariuzs Lisiak Author-Workplace-Name: Department of Meat and Fat Technology, Prof. Wacław Dąbrowski Institute of Agricultural and Food Biotechnology-State Research Institute, Poznań, Poland Author-Name: Karol Borzuta Author-Workplace-Name: Department of Meat and Fat Technology, Prof. Wacław Dąbrowski Institute of Agricultural and Food Biotechnology-State Research Institute, Poznań, Poland Author-Name: Eugenia Grześkowiak Author-Workplace-Name: Department of Meat and Fat Technology, Prof. Wacław Dąbrowski Institute of Agricultural and Food Biotechnology-State Research Institute, Poznań, Poland Author-Name: Piotr Ślósarz Author-Workplace-Name: Faculty of Veterinary Medicine and Animal Science, University of Life Sciences, Poznań, Poland Title: Selected measurements of pork carcass geometry and association with slaughter value Abstract: The aim of the research was to use a vision technique to assess the relations between anatomical pork carcass traits, carcass geometry and slaughter value. The measurements in the experiment were performed on 128 selected pork carcasses. The 3D image of the carcass was assessed, especially its shape. Based on the carcass curvatures the correlation coefficients for these surfaces and slaughter value traits were calculated. The possibility of using the external dimensions and geometry of pork carcass for the accurate estimation of meatiness and the share of primal cuts using the technique of acquiring carcass images in a 3D configuration was confirmed. This can be useful in improving the classification methods of the SEUROP system. In the fattener breeding process the ham size increased whereas the carcass front decreased. That was probably why the carcass width or surface size correlation with the meat content were positive on the carcass back and negative on the shoulder. Keywords: 3D image, lean meat content, pigs, pork carcass assessment, primal cut assessment Journal: Czech Journal of Animal Science Pages: 43-54 Volume: 70 Issue: 2 Year: 2025 DOI: 10.17221/161/2024-CJAS File-URL: http://cjas.agriculturejournals.cz/doi/10.17221/161/2024-CJAS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/cjs-202502-0002.txt Handle: RePEc:caa:jnlcjs:v:70:y:2025:i:2:id:161-2024-CJAS Template-Type: ReDIF-Article 1.0 Author-Name: David Zapletal Author-Workplace-Name: Department of Animal Breeding, Animal Nutrition and Biochemistry, Faculty of Veterinary Hygiene and Ecology, University of Veterinary Sciences Brno, Brno, Czech Republic Author-Name: Radka Dobšíková Author-Workplace-Name: Department of Animal Breeding, Animal Nutrition and Biochemistry, Faculty of Veterinary Hygiene and Ecology, University of Veterinary Sciences Brno, Brno, Czech Republic Author-Name: Martina Kosťuková Author-Workplace-Name: Department of Animal Breeding, Animal Nutrition and Biochemistry, Faculty of Veterinary Hygiene and Ecology, University of Veterinary Sciences Brno, Brno, Czech Republic Author-Name: Vlastimil Šimek Author-Workplace-Name: Department of Animal Breeding, Animal Nutrition and Biochemistry, Faculty of Veterinary Hygiene and Ecology, University of Veterinary Sciences Brno, Brno, Czech Republic Author-Name: Helena Stříbrná Author-Workplace-Name: Department of Pathology and Parasitology, Faculty of Veterinary Medicine, University of Veterinary Sciences Brno, Brno, Czech Republic Author-Name: Břetislav Koudela Author-Workplace-Name: Department of Pathology and Parasitology, Faculty of Veterinary Medicine, University of Veterinary Sciences Brno, Brno, Czech Republic Title: Broilers responses to dietary wormwood administration under Eimeria-challenged conditions Abstract: Some herbs can be used as phytogenic additives as they naturally contain specific bioactive phytochemicals that are effective in controlling coccidiosis and some other poultry diseases due to their immunostimulatory effects and they can be also nutritious. The aim of the study was to evaluate the effect of Artemisia absinthium (WW) meal inclusion to a diet on the production performance, oocyst output and minerals content of meat in broilers infested by Eimeria oocysts. Ross 308 broilers were randomly assigned to four dietary groups. Broilers in the control group were fed basal diets without coccidiostat or WW. Broilers of the R group were fed starter and grower diets supplemented with coccidiostat robenidine. Broilers in the W3 and W6 groups were fed diets containing 3 and 6% of WW in feed, resp. At the age of 16 days, all broilers were infested by oocysts of Eimeria spp. to induce a mild coccidiosis infection. The WW meal had no effect on the production performance and carcass traits of broilers (P > 0.05). However, the used levels of administered WW meal were not effective in reducing the number of oocysts faecal output in infested broilers. Administration of coccidiostat robenidine prevented the development of Eimeria oocysts in the intestine as long as 4 days after the cessation of feeding the medicated diet to broilers (P < 0.05). As for minerals of breast meat, broilers of the W3 group displayed a higher Ca level compared to those in the R group (P < 0.05). On the contrary, the R group showed the highest Cu level compared to all other dietary groups assessed (P < 0.01). It can be concluded that for the coccidiosis control in poultry production, it is advisable to monitor the content of specific bioactive substances with proven anticoccidial activity when using WW products. Keywords: Artemisia absinthium, coccidiosis, chicken, minerals of meat, oocyst output, production Journal: Czech Journal of Animal Science Pages: 55-63 Volume: 70 Issue: 2 Year: 2025 DOI: 10.17221/188/2024-CJAS File-URL: http://cjas.agriculturejournals.cz/doi/10.17221/188/2024-CJAS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/cjs-202502-0003.txt Handle: RePEc:caa:jnlcjs:v:70:y:2025:i:2:id:188-2024-CJAS Template-Type: ReDIF-Article 1.0 Author-Name: Ladislav Máchal Author-Workplace-Name: Department of Animal Breeding, Faculty of AgriSciences, Mendel University in Brno, Brno, Czech Republic Author-Name: Tomáš Kopec Author-Workplace-Name: Department of Animal Breeding, Faculty of AgriSciences, Mendel University in Brno, Brno, Czech Republic Author-Name: Zuzana Rečková Author-Workplace-Name: Department of Animal Breeding, Faculty of AgriSciences, Mendel University in Brno, Brno, Czech Republic Author-Name: Radek Filipčík Author-Workplace-Name: Department of Animal Breeding, Faculty of AgriSciences, Mendel University in Brno, Brno, Czech Republic Author-Name: Milan Večeřa Author-Workplace-Name: Department of Animal Breeding, Faculty of AgriSciences, Mendel University in Brno, Brno, Czech Republic Author-Name: Vojtěch Pešan Author-Workplace-Name: Department of Animal Breeding, Faculty of AgriSciences, Mendel University in Brno, Brno, Czech Republic Author-Name: Eva Tůmová Author-Workplace-Name: Department of Animal Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic Title: Analysis of ejaculate parameters and sperm morphology in roosters of initial laying strains Abstract: The aim of this study was to evaluate the influence of laying hybrid lines of domestic fowl (Gallus gallus f. domestica) and their age on ejaculate parameters in roosters. Parameters assessed included ejaculate volume, sperm concentration, total sperm count (TSC), percentage of normal spermatozoa, and sperm motility. Additionally, morphological defects were observed: defects of the acrosome, head, neck, tail, and immature spermatozoa. The study included 120 roosters of the Barred Plymouth Rock, Sussex Light, Rhode Island Red, and Rhode Island White laying lines. Ejaculate was repeatedly evaluated at the ages of 34, 43, and 52 weeks. The average ejaculate volume was 0.52 ml, sperm concentration 2.53 × 109 cm-3, motility 81.1%, and defect occurrence rates were as follows: acrosome defects 0.7%, head defects 3.0%, neck defects 2.4%, and tail defects 2.9%. A statistically significant effect (P < 0.01) of the line was observed for all parameters except tail defects. Statistically significant differences between age categories were confirmed for volume, sperm concentration, TSC, immature spermatozoa, and normal spermatozoa (P < 0.01), as well as for ejaculate volume, neck, and tail defects (P < 0.05). The volume, concentration and TSC reached significantly higher values at 43 weeks of age. The incidence of normal spermatozoa and immature spermatozoa was significantly lower at 34 weeks of age. The interaction of age and line was significant (P < 0.01) for sperm concentration, TSC, motility, head, tail, and normal spermatozoa. The highest values of volume, concentration, and TSC were observed in the BPR line, which also exhibited the lowest occurrence of head defects and immature spermatozoa. The RIR line showed a higher occurrence of sperm defects. Younger roosters (34 and 43 weeks of age) had higher ejaculate parameter values and a higher occurrence of sperm defects compared to the older ones. Keywords: acrosome, abnormal spermatozoa, chicken, hybrid lines, motility Journal: Czech Journal of Animal Science Pages: 72-81 Volume: 70 Issue: 2 Year: 2025 DOI: 10.17221/203/2024-CJAS File-URL: http://cjas.agriculturejournals.cz/doi/10.17221/203/2024-CJAS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/cjs-202502-0004.txt Handle: RePEc:caa:jnlcjs:v:70:y:2025:i:2:id:203-2024-CJAS