Template-Type: ReDIF-Article 1.0 Author-Name: Editorial Department Title: List of CJAS Reviewers in 2023 Journal: Czech Journal of Animal Science Pages: I-II Volume: 69 Issue: 1 Year: 2024 File-URL: http://cjas.agriculturejournals.cz/artkey/cjs-202401-0001_list-of-cjas-reviewers-in-2023.php File-Format: text/html Handle: RePEc:caa:jnlcjs:v:69:y:2024:i:1:id:cjs-202401-0001 Template-Type: ReDIF-Article 1.0 Author-Name: Murteza Cakir Author-Workplace-Name: Department of Neurosurgery, Medical Faculty, Ataturk University, Erzurum, Turkey Author-Name: Tayfun Karatas Author-Workplace-Name: Health Services Vocational School, Agri Ibrahim Cecen University, Agri, Turkey Author-Name: Serkan Yildirim Author-Workplace-Name: Department of Pathology, Faculty of Veterinary Medicine, Ataturk University, Erzurum, Turkey Title: Protective effects of green tea (Camellia sinensis) extract against cypermethrin-induced neurotoxicity in rainbow trout (Oncorhynchus mykiss) brain tissues Abstract: Corrigendum in: Czech J. Anim. Sci. 2024 May 31;69(5):209. doi: 10.17221/83/2024-CJASThis study was conducted to evaluate the protective impacts of green tea extract (GT) against cypermethrin-induced (CYP) neurotoxicity parameters such as acetylcholinesterase activity, oxidative stress, immune response, histopathology, apoptosis, and DNA damage in the brain tissues of rainbow trout (Oncorhynchus mykiss). The trial was divided into four groups (group 1, 2, 3 and 4). Group 1 was the control, while group 2 was treated with 0.1 mg/l of CYP, group 3 was treated with 0.1 mg/l of CYP + 100 mg/l of GT and group 4 was treated with 0.1 mg/l of CYP + 200 mg/l of GT for 14 days. While the level of malondialdehyde increased, the exposure to CYP in group 2 resulted in a reduction in acetylcholinesterase, lysozyme, total immunoglobulin, white blood cell, superoxide dismutase, and catalase levels in the brain tissues, as compared to group 1. Furthermore, CYP exposure in group 2 resulted in severe hyperaemia in meningeal and parenchymal vessels, accompanied by significant degeneration and necrosis. In addition, neurons in group 2 exhibited pronounced cytoplasmic expressions of 8-OHdG and caspase-3. On the contrary, both doses of 100 mg/l and 200 mg/l of GT demonstrated remarkable neuroprotective impacts against CYP toxicity across all parameters as mentioned above. In summary, this study conclusively showed that the administration of 200 mg dose of GT yielded more pronounced neuroprotective impacts, surpassing the impacts observed with the 100 mg dose of GT. The higher dosage effectively reduced CYP-induced oxidative stress, apoptosis and DNA damage, while exhibiting an enhanced immune response. Keywords: fish, extract, pesticide, oxidative stress, immunity, histopathology Journal: Czech Journal of Animal Science Pages: 29-37 Volume: 69 Issue: 1 Year: 2024 DOI: 10.17221/110/2023-CJAS File-URL: http://cjas.agriculturejournals.cz/doi/10.17221/110/2023-CJAS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/cjs-202401-0002.txt Handle: RePEc:caa:jnlcjs:v:69:y:2024:i:1:id:110-2023-CJAS Template-Type: ReDIF-Article 1.0 Author-Name: Uroš Ljubobratović Author-Workplace-Name: Research Centre for Aquaculture and Fisheries, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, Szarvas, Hungary Author-Name: László Ardó Author-Workplace-Name: Research Centre for Aquaculture and Fisheries, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, Szarvas, Hungary Author-Name: Georgina Fazekas Author-Workplace-Name: Research Centre for Aquaculture and Fisheries, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, Szarvas, Hungary Author-Name: Zoltán Horváth Author-Workplace-Name: H&H Carpio Halászati Kft., Ócsárd, Hungary Author-Name: Jovanka Lukić Author-Workplace-Name: Laboratory for Molecular Microbiology (LMM), Institute of Molecular Genetics and Genetic Engineering (IMGGE), University of Belgrade, Belgrade, Serbia Title: Effect of thermal management on vitellogenesis and maturation in indoor-reared pikeperch (Sander lucioperca) Abstract: The present study aimed to assess the effects of thermal manipulation on the vitellogenesis and final oocyte maturation (FOM) in pikeperch. Two groups of fish were stocked in two separate tanks of the climate chamber. One group was stocked at 10-month age (THERMAL), while the other was continually kept under stable photothermal conditions until 19-month-age (CONTROL) and then transferred to a climate chamber. The progress of vitellogenesis was assessed via evaluation of the oocyte diameter at the mid- and late-autumn phases, and the gonadosomatic index (GSI) at the late-autumn phase. Finally, females from the CONTROL group were hormonally stimulated before (WARMING) and after (STABLE) increase of the temperature from wintering to spawning, and the FOM progress, ovulation and plasma levels of 17 α, 20β dihydroxy progesterone (DHP) were assessed. Significantly larger oocytes at the mid-autumn phase (878.8 ± 40.1 μm vs 836.5 ± 46.5 μm) as well as the GSI at the end of the autumn phase (10.5 ± 1.7% vs 7.6 ± 1.1%) were noticed in THERMAL fish. Significantly faster FOM was seen in fish under the WARMING post-stimulation regime, and these fish had higher DHP levels at the moment of hormonal stimulation (5.4 ± 1.4 ng/ml vs 3.8 ± 1.2 ng/ml). According to the obtained results, it appears that photothermal induction of fish at a younger stage might have a positive impact on the first spawning, while the WARMING thermal regime seems to be more efficient in stimulating the FOM in fish upon first wintering. Keywords: spawning induction, fully controlled environment, oocyte growth, percids, final oocyte maturation Journal: Czech Journal of Animal Science Pages: 18-28 Volume: 69 Issue: 1 Year: 2024 DOI: 10.17221/136/2023-CJAS File-URL: http://cjas.agriculturejournals.cz/doi/10.17221/136/2023-CJAS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/cjs-202401-0003.txt Handle: RePEc:caa:jnlcjs:v:69:y:2024:i:1:id:136-2023-CJAS Template-Type: ReDIF-Article 1.0 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 - Suchdol, Czech Republic Author-Name: Darina Chodová Author-Workplace-Name: Department of Animal Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague - Suchdol, Czech Republic Author-Name: Jan Tyl Author-Workplace-Name: International Poultry Testing Station Ústrašice, Tábor, Czech Republic Author-Name: Monika Okrouhlá Author-Workplace-Name: Department of Animal Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague - Suchdol, Czech Republic Author-Name: Tarek A. Ebeid Author-Workplace-Name: Department of Poultry Production, Faculty of Agriculture, Kafrelsheikh University, Kafr El-Sheikh, Egypt Author-Workplace-Name: Department of Animal Production and Breeding, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah, Saudi Arabia Title: Does feed restriction and pasture affect carcass composition and meat quality of fast-growing chickens? Abstract: The aim of the study was to evaluate the effect of feeding regime (FR) and the combination of FR with pasture on the carcass composition and meat quality parameters of fast-growing chickens. Ross 308 chickens were split into three groups: Group 1 was fed ad libitum, and Groups 2 and 3 had a restricted diet. The chickens were feed-restricted at a rate of 70% ad libitum from 8 to 14 days of age. In Group 3, after restriction at the age of 21 days, chickens were kept on a pasture until the end of the experiment at 35 days of age. The chickens were fed ad libitum prior to and following restriction. Feed restriction and the combination of feed restriction and pasture significantly reduced final body weight, but the dressing out percentage was not affected. The breast percentage was the highest (P = 0.005) in the ad libitum group (30.5%), followed by the restricted group (28.2%) and the lowest in the group with a combination of feed restriction and pasture (27.4%). Breast pH and colour measured 24 h post mortem were not affected, whereas texture expressed as Fmax was the lowest in the group with the combination of feed restriction and pasture (P = 0.05). There was no effect of the group on meat dry matter, crude protein, cholesterol, and fatty acid content, but ether extract was the highest, and significantly so, in the ad libitum-fed group. In summary, feed restriction and the combination of feed restriction and pasture negatively affected final body weight and breast and abdominal fat percentages, which might be related to a short realimentation period for compensatory growth. However, these conditions negligibly affected carcass composition and the physical and chemical parameters of the meat. Keywords: chicken, limited feeding, pasture, meat characteristics Journal: Czech Journal of Animal Science Pages: 11-17 Volume: 69 Issue: 1 Year: 2024 DOI: 10.17221/154/2023-CJAS File-URL: http://cjas.agriculturejournals.cz/doi/10.17221/154/2023-CJAS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/cjs-202401-0004.txt Handle: RePEc:caa:jnlcjs:v:69:y:2024:i:1:id:154-2023-CJAS Template-Type: ReDIF-Article 1.0 Author-Name: Luděk Stádník Author-Workplace-Name: Department of Animal Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague - Suchdol, Czech Republic Author-Name: Veronika Kinterová Author-Workplace-Name: Laboratory of Developmental Biology, Institute of Animal Physiology and Genetics of the Czech Academy of Sciences, Liběchov, Czech Republic Author-Name: Jiří Šichtař Author-Workplace-Name: Department of Animal Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague - Suchdol, Czech Republic Author-Name: Jaromír Ducháček Author-Workplace-Name: Department of Animal Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague - Suchdol, Czech Republic Author-Name: Matúš Gašparík Author-Workplace-Name: Department of Animal Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague - Suchdol, Czech Republic Author-Name: Lucie Němcová Author-Workplace-Name: Laboratory of Developmental Biology, Institute of Animal Physiology and Genetics of the Czech Academy of Sciences, Liběchov, Czech Republic Author-Name: Radek Procházka Author-Workplace-Name: Laboratory of Developmental Biology, Institute of Animal Physiology and Genetics of the Czech Academy of Sciences, Liběchov, Czech Republic Author-Name: Radim Codl Author-Workplace-Name: Department of Animal Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague - Suchdol, Czech Republic Title: Comparison of selected data acquisition models using on-farm production records on qualitative parameters of oocytes in dairy cows Abstract: Dairy cows enter the negative energy balance in the early post-partum period, which negatively affects milk yield, health status and reproduction. This study aimed to determine if milk yield (MY) and fat/protein (F/P) ratio could be used as reliable indicators for predicting the quality of aspirated oocytes and their further use for in vitro fertilisation. A secondary goal was to compare different periods before oocyte aspiration to determine which period had the most significant impact on the oocyte development in donor cows. All tested Holstein cows were at their first lactation (n = 68). The first ultrasound-guided follicular aspiration in donor cows was done on average at 58.7 days in milk (DIM). Usually, a second aspiration followed a week later if no problems were detected. In total, 102 aspirations were performed. Three model equations with different F/P ratio distributions and variants of MY production were tested in statistical evaluation. On average, 3.6 oocytes were retrieved per donor per aspiration, with a minimum of 1 and a maximum of 12. The maturation rate was 62.2%, with a high probability of reaching metaphase II (90.45%). The highest number of oocytes was obtained from low-yielding cows with a low F/P ratio in all evaluated periods (P < 0.01). The quality and expansion of cumulus-oocyte complexes were unaffected by the metabolic status. However, a tendency for better quality oocytes in donors with lower MY and F/P ratios was observed in all models. Our preliminary results showed that the prediction of oocyte quality in a homogeneous group of the first-lactation cows was related to the chosen data acquisition model. Data about milk yield and F/P ratio obtained from on-farm systems provide a valuable source of information for the selection of oocyte donors. Keywords: milk yield, fat to protein ratio, ovum pick-up, maturation rate, lipid droplets Journal: Czech Journal of Animal Science Pages: 1-10 Volume: 69 Issue: 1 Year: 2024 DOI: 10.17221/156/2023-CJAS File-URL: http://cjas.agriculturejournals.cz/doi/10.17221/156/2023-CJAS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/cjs-202401-0005.txt Handle: RePEc:caa:jnlcjs:v:69:y:2024:i:1:id:156-2023-CJAS