Czech Journal of Animal Science - Latest articles
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Does the incidence of egg yolk influence the meat quality and fatty acid profile of broilers of two chicken genotypes?
Antonella Dalle Zotte, Marco Cullere, Bianca Palumbo, Tamás Donkó, Zoltán Sütő, Gábor Milisits
Czech J. Anim. Sci., 2024, 69(9):378-387 | DOI: 10.17221/122/2024-CJAS 
The present experiment studied the effects of egg composition (egg yolk content; Y) of two different chicken genotypes (selected by computed tomography; CT) on hatched chick growth performance, slaughter traits, and meat quality. Three thousand five hundred eggs per genotype were scanned by CT. Then, for each genotype, eggs were selected according to their Y content: low (21.0 ± 0.88 – 350 eggs), medium (24.5 ± 0.15– 350 eggs) and high (28.3 ± 0.98 – 350 eggs). The remaining eggs were excluded from the study. At 11 weeks of age, 15 chickens per group were slaughtered, carcasses were dissected and breast and legs...
Preliminary results on the antioxidant capacity of the Coffea arabica grounds extract on semen parameters of Fleckvieh cattle in the Amazonas region
Deiner Jhonel Gongora-Bardales, Marilu Mestanza Mendoza, Gleni Tatiana Segura Portocarrero, Lizeth Amparo Heredia Vilchez, Jonathan Alberto Campos Trigoso, José Américo Saucedo-Uriarte, Hugo Frias Torres, Rainer Marco López Lapa, Segundo Jose Zamora Huaman, William Bardales Escalante, Nilton Luis Murga Valderrama
Czech J. Anim. Sci., 2024, 69(9):367-377 | DOI: 10.17221/115/2024-CJAS
Livestock farming is vital to a country's economy, and technological innovations in animal genetics and reproductive biotechnologies are key for environmental and socioeconomic development. This study aimed to evaluate the antioxidant capacity of Coffea arabica grounds (CAG) extract on the semen parameters of Fleckvieh cattle. CAG was processed, and its antioxidant capacity was assessed using DPPH, FRAP, and total phenols assays. Semen was collected from a pedigree bull and analysed macroscopically and microscopically. Different concentrations of CAG (0, 1, 1.5, and 2 mg/ml) were tested at 4, 12, 24, and 36 h post-refrigeration. The study...
The effect of different forages on rumen microbiota and milk production performance in Holstein dairy cows
Szu Han Wang, Hsiao Han Liao, Chia-Xin Lee, Hsiao-Ming Chen, Ling-You Chen, Shih-Te Chuang, Jih-Tay Hsu
Czech J. Anim. Sci., 2024, 69(9):356-366 | DOI: 10.17221/86/2024-CJAS
Optimising the feed composition, especially the forage choice, and reducing costs are essential for improving dairy production efficiency. Different forage sources and proportions were used to formulate rations containing equal energy and protein, and their effects on rumen microbiota and milk production performance of dairy cows were evaluated in two experiments. In experiment 1, thirty lactating cows (235 ±13 d postpartum; milk production 29.1 ± 1.0 kg/day) were divided into Pangola and Bermuda groups. In experiment 2, twenty lactating cows (79.9 ± 8.1 d postpartum; milk production 34.7 ± 0.6 kg/day) were divided into...
Changes in the oxidative - biochemical status in dairy cows during the transition period affecting reproductive and health parameters.
Jiří Bezdíček, Andrea Nesvadbová, Jaromír Ducháček, Jana Sekaninová, Luděk Stádník, Martina Janků
Czech J. Anim. Sci., 2024, 69(9):345-355 | DOI: 10.17221/128/2024-CJAS
Negative energy balance (NEB) after calving leads to unique metabolic changes in cows and it provides important information on the period when nutrient output prevails over nutrient intake associated with a number of physiological changes in the organism suitable for detection using biochemical blood analyses. The aim of this paper is to summarise current knowledge of the changes in blood parameters during the period of NEB in relation to non-esterified fatty acids, ketone bodies, and immunologic and stress indicators. The impact of these changes on bovine reproduction and health is also discussed in the sequel. The period of NEB is still...
Cryopreservation of early-stage male Black Sea trout (Salmo trutta labrax) germ cells and comparison of the whole tissue and enzymatically isolated cells
Ege Güngör, Aygül Ekici, Merve Erçin, Selda Oktayoğlu, Taiju Saito, İlker Keskin
Czech J. Anim. Sci., 2024, 69(8):331-343 | DOI: 10.17221/71/2024-CJAS
The high plasticity, or the ability to differentiate into various cell types, and capacity to become both gametes of early-stage germ cells (eGCs) allows them to be used for the long-term storage and recovery of genetic information. In this study, species-specific protocols (isolation period, enzymatic separation solution, incubation period, appropriate cryoprotectant, and cryopreservation protocol) were established for the isolation and long-term preservation of Black Sea trout eGCs. In addition, the difference between the application of cryopreservation to the whole gonad tissue and to the enzymatically separated cells has been shown in terms...
Whole-genome sequencing revealed the population structure of Fujian chicken breeds
Zhiming Zhu, Linli Zhang, Qingwu Xin, Li Li, Zhongwei Miao, Qinlou Huang, Nenzhu Zheng
Czech J. Anim. Sci., 2024, 69(8):323-330 | DOI: 10.17221/91/2023-CJAS
Indigenous chicken breeds from Fujian Province, China, exhibit unique and distinctive phenotypic characteristics, including morphology, behaviour, integumentary pigmentation, feather colouration, and production performance. However, the underlying genetic basis governing these specific traits remains unclear. This study aimed to elucidate the population structure of six Fujian local chicken breeds [Bairong chickens (BRCs), Jinhu chickens (JHCs), Minqing chickens (MQCs), Dehua chickens (DHCs), Xiangdong chickens (XDCs), and Hetian chickens (HTCs)] in terms of their genetic resources within the province. The whole-genome resequencing revealed 8 678 612...
Pedigree-based genetic diversity of Debrecen White rabbit
János Posta, Noémi Anikó Szabó, Róbert Juráskó
Czech J. Anim. Sci., 2024, 69(8):317-322 | DOI: 10.17221/116/2024-CJAS
This research was carried out to evaluate the pedigree data of the Debrecen White rabbit breed. Pedigree information was supplied by the Debrecen White Rabbit Breeder Association. The final dataset contained all available information on animals registered by the breeding association up to 2023. The reference population was the active breeding stock in 2023. The estimated complete generation equivalent was 7.8, while the mean of maximum generations was 16.29 for the present stock. All individuals within the current population were inbred, with a 5.37% mean inbreeding coefficient. The division of the inbreeding coefficient showed that homozygosity...
The stability of fatty acids in yoghurts produced from bulk milk samples intentionally selected according to dairy production systems
Oto Hanuš, Eva Samková, Jindřich Čítek, Hana Nejeschlebová, Eva Dadáková, Lucie Hasoňová, Michael Rost, Irena Němečková, Karolína Reindl, Markéta Borková, Ondřej Elich
Czech J. Anim. Sci., 2024, 69(8):303-316 | DOI: 10.17221/84/2024-CJAS
The fatty acid (FA) composition of milk fat can be positively influenced by the modification of dairy farming and the possible selection of raw material for processing. The question arises as to whether the benefits of a better FA composition will be maintained even after processing dairy products. Thus, the aim was to obtain a more favourable FA composition by a targeted selection of cow’s milk (grazing vs stabled herds) and then compare FAs of milk and fermented product (yoghurt). Bulk tank milk of grazing herds had significantly better FA composition than milk of stabled herds (for example, C16:0 28.07% vs 32.27%,...
Corrigendum: A decision support system based on disease scoring enables dairy farmers to proactively improve herd health
Saro Jan
Czech J. Anim. Sci., 2024, 69(7):302 | DOI: 10.17221/111/2024-CJAS
Effect of tannin degradation of mangrove (Sonneratia alba) fruit on nutrient digestibility, protozoa population and methane gas production
Elihasridas Elihasridas, Roni Pazla, Novirman Jamarun, Gusri Yanti, Sharli Asmairicen, Leni Marlina, Maureen Chrisye Hadriatry, Ratna Wylis Arief, Hadriana Bansi, Shahid Ullah Khan, Faheem Ahmed Khan, Ezi Masdia Putri, Antonius Antonius, Zaitul Ikhlas, Zahlul Ikhsan, Laily Rinda Ardani, Anggela Titania Siva, Hileri Yendrita, Fezi Zelinea
Czech J. Anim. Sci., 2024, 69(7):292-301 | DOI: 10.17221/38/2024-CJAS
This study examined the fermentation duration in relation to the effectiveness of tannin levels in mangrove (Sonneratia alba) fruit during the fermentation process using Aspergillus niger. The tested durations were 7, 10, 13, and 16 days in anaerobic conditions. The outcomes measured included crude fat, crude fibre, and nitrogen-free extract digestibility. Microbial biomass, protozoa population, and methane gas production were also recorded as responses to the rumen microbial activity. The results showed that 16 days of fermentation gave the highest average for all responses. The protozoa population reached around 4.07 × 105 cells/ml...
How the milk chemical composition and fatty acid profile are influenced by physiological factorsin Najdi dairy sheep
Abdulkareem Mohammed Matar, Faisal Ahmed Alshamiry, Ramzi Ahmed Amran, Riyadh Salah Aljumaah, Muneeb Musthafa, Massimo Todaro
Czech J. Anim. Sci., 2024, 69(7):280-291 | DOI: 10.17221/37/2024-CJAS
Sheep milk production is a complex process that is influenced by various factors. This study aims to investigate how the litter size (single vs. twins), birth type (male vs. female), age of the ewes and body weight affect the milk composition and fatty acid profile of milk fat. Milk samples were collected from 119 Najdi ewes that were the subject of this study. Gas chromatography-mass spectrometry (GC-MASS) was used to quantify the fatty acids (FAs). The results showed that the twins birth type (female/female) has a significant influence (P < 0.05) on the concentration of linoleic acid (LA), alpha-linolenic acid (ALA), behenic...
Commonly used genomic estimators of individual inbreeding in livestock
Adrián Halvoník, Nina Moravčíková, Monika Chalupková, Radovan Kasarda
Czech J. Anim. Sci., 2024, 69(7):269-279 | DOI: 10.17221/91/2024-CJAS
Abstract: Management of inbreeding is one of the crucial parts of breeding programs in livestock populations. Traditionally, the inbreeding coefficient is calculated using pedigree data; however, it can also be estimated from genomic data. Nowadays, various approaches to estimating genomic-based inbreeding coefficients are increasingly integrated into research and breeding practices. These genomic estimators can supplement or replace pedigree-based coefficients. Each genomic-based inbreeding coefficient has its own properties and different ranges of values, and some of them need specific settings for calculation. Moreover, depending on the methodological...
The impact of parity, litter size and birth weight variations within a litter on piglet pre-weaning performance
Nqobile Lungile Buthelezi, Bohani Mtileni, Khathutshelo Agree Nephawe, Peter Ayodeji Idowu, Mamokoma Catherine Modiba, Hezekiel Mpedi, Takalani Judas Mpofu
Czech J. Anim. Sci., 2024, 69(7):255-268 | DOI: 10.17221/36/2024-CJAS
Sows are selected for their prolificacy. Therefore, assessing difficulties that can be associated with large litters is crucial. This review aims to highlight the factors that can affect reproductive performance such as breed, parity, litter size, environment, and nutrition. Understanding these factors can help producers make informed decisions about sow management and other aspects. Higher within-litter variation is the result of a high number of piglets born. It has been determined that large litter sizes pose a risk to animal welfare in the pig industry. Moreover, large litters bring more piglets with low birth weight leading to high pre-weaning...
Effects of maize silage withdrawal from finishing ration on weight gain, carcass yield and beef quality of Holstein Friesian × Belgian Blue crossbred bulls
Tayfun Gündüz, Hayrettin Çayıroğlu
Czech J. Anim. Sci., 2024, 69(6):219-229 | DOI: 10.17221/40/2024-CJAS
This study was practical work in a commercial beef cattle enterprise to offer beef producers different options in a total mixed ration (TMR) design. This study was conducted to determine the effects of withdrawing maize silage from TMR during the finishing period on weight gain, carcass yield and beef quality of meat in beef cattle. Fifty-two Holstein Friesian x Belgian Blue crossbred bulls were used in this study for 126 days. These bulls were divided into four feeding methods described as (i) no maize silage in TMR (C1), (ii) maize silage was withdrawn from TMR two months before slaughter (S1), (iii) maize silage was withdrawn from TMR one month...
Relationship between rib fat thickness and carcass price among different carcass weight groups in Korean native cattle
Eunjeong Jeon, Sangbuem Cho, Myungsun Park, Sung-Il Ahn, Junior Isaac Celestin Poaty Ditengou, Ki-Beom Kim, Sung-Sub Shin, Nag-Jin Choi
Czech J. Anim. Sci., 2024, 69(6):211-218 | DOI: 10.17221/57/2024-CJAS
The study assessed the relationship between rib fat thickness and carcass price among different carcass weight groups in Korean native cattle (Hanwoo), taking into account changes in the beef grading system. Data from 8 926 Hanwoo steers, with an average age of 30.6 ± 1.88 months and slaughtered between 2017 and 2019, were analysed. The variables considered included rib fat thickness, carcass weight, eye muscle area, marbling score, and carcass price. Steers were categorised into eight carcass weight groups ranging from 250 kg to 650 kg in the original system, rib fat thickness consistently had a negative impact on carcass price, with partial...
Comparative study on the large-scale intensive culture of pikeperch (Sander lucioperca) larvae: Evaluation of two different live exogenous food options
Václav Kučera, Tomáš Pěnka, Oleksandr Malinovskyi, Carlos Yanes-Roca, Zhaxygali B. Kuanchaleyev, Tomáš Policar
Czech J. Anim. Sci., 2024, 69(6):243-254 | DOI: 10.17221/42/2024-CJAS
This study is focused on the comparison of production efficiency (growth, survival, and development) and economic evaluation of large-scale larvae culture in pikeperch (Sander lucioperca) using Artemia (Group A) compared to using rotifers and the subsequent combination of rotifers and Artemia (Group R) as a first exogenous feed following weaning and intensive culture of juveniles. Both experimental groups were stocked with the same initial density (100 pcs per litre) of larvae at 4 days post hatching (DPH). Each group was cultured in triplicate until 65 DPH. Assessed parameters included FBW (final body weight), FTL (final total length), SGR (specific...
Influence of daily feed ration on growth and condition of juvenile pikeperch (Sander lucioperca) reared in a recirculating aquaculture system (RAS)
Tomáš Pěnka, Oleksandr Malinovskyi, Jitka Kolářová, Václav Kučera, Tomáš Policar
Czech J. Anim. Sci., 2024, 69(6):230-242 | DOI: 10.17221/33/2024-CJAS
The study tested the effect of daily feed ration (DFR: 0.5%, 0.75%, 1.0%, 1.25%, and 1.5% of fish biomass) on juvenile pikeperch (Sander lucioperca) with an initial body weight of 21.5 ± 5.1 g and total length of 144.5 ± 8.5 mm. The pikeperch were fed floating feed at 8-hour intervals for a duration of 84 days. By the end of the experiment, the group fed DFR of 1.5% exhibited the highest body weight (51.5 ± 16.1 g) and total length (188.2 ± 17.8 mm). The weight heterogeneity, measured as the coefficient of variation (CV), ranged between 30.29 and 33.24%. The specific heterogeneity rate (SHR) ranged from 304.44 to 334.94‰/day....
Corrigendum: Protective effects of green tea (Camellia sinensis) extract against cypermethrin-induced neurotoxicity in rainbow trout (Oncorhynchus mykiss) brain tissues
Murteza Cakir
Czech J. Anim. Sci., 2024, 69(5):209 | DOI: 10.17221/83/2024-CJAS
A decision support system based on disease scoring enables dairy farmers to proactively improve herd health
Jan Saro, Luděk Stádník, Petra Bláhová, Simona Huguet, Helena Brožová, Jaromír Ducháček
Czech J. Anim. Sci., 2024, 69(5):165-177 | DOI: 10.17221/53/2024-CJAS
Decision support systems (DSSs) enable dairy farmers to make informed and timely decisions on herd health management. However, the lack of a disease scoring system by category and severity limits the application of this approach. In this study, we developed an innovative approach to dairy herd health management by establishing a novel scoring system for dairy herd health management aimed at providing a more nuanced understanding of disease impact. For this purpose, we retrieved 5-year data from 2 558 disease diary records of 798 primiparous and multiparous cows housed on a Czech farm and classified 125 production diseases into six categories, namely...
High percentage of morphological defects in sperm of the Zemplin rabbit breed: A major obstacle to fertility?
Jakub Vozaf, Andrea Svoradová, Jaromír Vašíček, Lucia Olexiková, Andrej Baláži, Hana Ďuránová, Alexander Ostró, Silvia Toporcerová, Peter Chrenek
Czech J. Anim. Sci., 2024, 69(5):191-199 | DOI: 10.17221/29/2024-CJAS
This research investigates the high prevalence of morphological defects in the sperm of a particular rabbit breed, namely the Zemplin rabbit (ZR). We tried to uncover the possible causes and consequences of the observed abnormalities. Ejaculate samples from ten adult males were divided into two qualitative groups according to the motility parameters revealed by CASA (computer-assisted sperm analysis). Group A contained samples with total motility (TM) above 50% and progressive motility (PM) above 30%. Group B contained samples with TM and PM below these values. Viability (SYBR-14/DRAQ5TM and SYTOXTM Green/DRAQ5TM staining)...
Meta-analysis of genetic parameters for productive traits in Nile tilapia (Oreochromis niloticus)
Elizangela Zayana Lima D'suze, Nandrya Hayne Santos de Lima, Denise de Assis Paiva, Nilsa Duarte da Silva Lima, Thalles Ribeiro Gomes, José Teodoro de Paiva
Czech J. Anim. Sci., 2024, 69(5):200-208 | DOI: 10.17221/6/2024-CJAS
The advances in the production traits of Oreochromis niloticus are due to the development of genetically superior broodstock animals. Understanding the genetic variability of fish stocks is crucial to any animal breeding program. The aim of this study was to perform a meta-analysis of genetic parameters that considers the variability between studies for economically important traits in the Nile tilapia (Oreochromis niloticus) production. The final dataset from literature review contained 226 estimates of heritability and 53 estimates of genetic correlation across 37 peer-reviewed articles published between 2002 and 2022. Weighted genetic...
In vitro and in sacco evaluation of total mixed ration silage added different levels of chitosan
Ayu Septi Anggraeni, Anuraga Jayanegara, Ahmad Sofyan, Erika Budiarti Laconi, Nur Rochmah Kumalasari, I Nyoman Gunadarma, Hendra Herdian, Rusli Fidriyanto
Czech J. Anim. Sci., 2024, 69(5):178-190 | DOI: 10.17221/173/2023-CJAS
This experiment aimed to evaluate the effects of chitosan administration to total mixed ration (TMR) silage on ruminal fermentation characteristics and degradability by using both in vitro and in sacco methods. The completely randomized design (CRD) used in this study included five treatments and six replications. The treatments consisted of TMR silage with distilled water as control (SA), TMR with 1% acetic acid (SB), 0.5% chitosan in 1% acetic acid diluent (SC), 1% chitosan in 1% acetic acid diluent (SD), and 1.5% chitosan in 1% acetic acid diluent (SE). The variables observed were ruminal fermentation parameters, methane production...
Effects of medium-chain fatty acids on growth performance, microbial attributes, and fat deposition in broiler chicken
Hew Wei Ee, Suriya Kumari Ramiah, Saminathan Mookiah, Zulkifli Idrus
Czech J. Anim. Sci., 2024, 69(4):119-128 | DOI: 10.17221/175/2023-CJAS
Poultry are monogastric animals that share a fat tissue structure that is strikingly comparable to the fat in animal feed. This indicates that the kind and source of fat in animal diets can significantly impact the accumulation and composition of fatty tissue in the resulting carcass. Hence, feeding (or dietary) manipulation is one of the best and commonly employed management strategies to improve of gut health and function in broiler production. Medium-chain fatty acids (MCFAs) are fatty acids with six to twelve carbon atoms that are prevalent in coconut and palm kernel oils. Much research is being conducted on nutritional approaches to enhance gut...
Dietary levels of soluble and insoluble fibre sources for young slow-growing broilers
Nayanne Rodrigues de Oliveira, Fabiana Ramos dos Santos, Maura Regina Sousa Silva, Isadora da Silva Rissato, Geyniane Carvalho Roque, Carollynne Martins Silva, Hemylla Sousa Santos Barros, Nathan Ferreira da Silva, Cibele Silva Minafra, Francisco Ribeiro de Araújo Neto
Czech J. Anim. Sci., 2024, 69(4):139-154 | DOI: 10.17221/84/2023-CJAS
This study aimed to evaluate the effects of dietary levels of soluble and insoluble fibre on the performance and digestive development of slow-growing broilers during the starter period. A total of 400 one-day-old Isa LabelTM male chicks were used that were distributed in a completely randomized factorial design 2 × 2 + 1 (inclusion of 2% or 4% of corncobs as a source of insoluble fibre IF and citrus pulp as a source of soluble fibre (SF); and a control treatment) with eight replicates of 10 birds each. The addition of IF to diets improved the weight gain and feed conversion of broilers at 7 and 21 days of age. Both fibre sources added to diets...
Effects of age and litter-of-origin on cryopreserved spermatozoa in Sumava rams
Anežka Málková, Martin Ptáček, Filipp Georgijevič Savvulidi, Szabolcs Tamás Nagy, Luděk Stádník
Czech J. Anim. Sci., 2024, 69(4):129-138 | DOI: 10.17221/32/2024-CJAS
This study aimed to evaluate the influence of the internal factors of ram age and litter-of-origin on semen quality during the cryopreservation process in Sumava sheep rams. This breed is included in the protected genetic resources of the Czech Republic. The sires were systematically divided into four groups according to age (under 1.5 years, 1.5 to 2.5 years, 2.5 to 3.5 years, and over 4.5 years) and according to litter frequency (singletons vs twins). Semen was evaluated after equilibration, and after cryopreservation using iSperm® mCASA and flow cytometry. During cryopreservation, there was a significant decrease in total sperm motility...
Field study: Factors influencing virgin queen bee acceptance rate in Apis mellifera colonies
Agnese Smilga-Spalvina, Kriss Spalvins, Ivars Veidenbergs
Czech J. Anim. Sci., 2024, 69(4):155-164 | DOI: 10.17221/22/2024-CJAS
Regular replacement of old and problematic queen bees is necessary to maintain the strength and productivity of bee colonies. Beekeepers replace queen bees using queen cells, virgin queens, or mated laying queens. In this study, we explored factors influencing the acceptance of the virgin queens. A comprehensive field study was conducted in the summer of 2023, involving the introduction of 754 virgin queens of different age and 194 queen cells into mating nuclei of various states using three different methods. The article aims to provide recommendations to beekeepers for introducing virgin queens, thereby increasing the frequency of successful requeening....
Effect of three types of oils on intramuscular fat composition of fattened cockerels
Eva Straková, Lucie Všetičková, Pavel Suchý
Czech J. Anim. Sci., 2024, 69(3):102-109 | DOI: 10.17221/5/2024-CJAS
The aim of the study was to assess the effect of selected vegetable oils on the representation of dietary fatty acids in the muscle of broiler cockerels. The experiment included three groups of one-day-old cockerels of ROSS 308 genotype, 15 individuals each. The feed mixture and drinking water were fed to the cockerels, ad libitum. In accordance with the technological instructions for the hybrid combination ROSS 308, BR1 was fed to chickens up to 9 days of age with the same nutrient and oil (soybean) composition for all three groups. From day 10 to day 28 of fattening the chicks were fed BR2 and from day 29 to day 35 BR3. The components and...
The nurse sow system ‒ A natural process of handling large litters: A review
Joab Malanda Osotsi, Gabriella Novotni-Danko, Peter Balogh
Czech J. Anim. Sci., 2024, 69(3):89-101 | DOI: 10.17221/158/2023-CJAS
Reproductive performance in pig production has gained genetic momentum resulting in large litters. Several strategies have been used to raise the number of piglets to address the challenge of a large litter size. This review provides a rationale for employing the nurse sow system as a biological way of handling large litters, exploring its step-by-step processes and its selected impacts. By exposing these steps, pig farmers will use the information to pinpoint their weak points in the chain and customize the procedures to meet their farm-specific goals for improved productivity. The nurse sow system helps to maximize pre-weaning survival by boosting...
The effect of ellagic acid on rabbit sperm in vitro parameters after cryopreservation
Jovana Grba, Lenka Kuželová, Alexander Makarevich, Andrej Baláži, Saša Dragin, Dragana Tekić, Peter Chrenek
Czech J. Anim. Sci., 2024, 69(3):110-117 | DOI: 10.17221/142/2023-CJAS
Cryopreservation reduces the antioxidant activity of spermatozoa and makes them more sensitive to damage caused by reactive oxygen species (ROS). The addition of antioxidants to the freezing medium could prevent cryo-damage by mitigating the harmful effects of ROS and, thus, protecting the spermatozoa. This study aimed to evaluate the effect of ellagic acid (EA) on the rabbit sperm traits after freezing-thawing. Semen samples collected from New Zealand White rabbit males were cryopreserved in a BotuCrio freezing medium (Nidacon, Sweden) supplemented with different concentrations of ellagic acid (EA at 0, 0.5, 1.5 and 2.5 mM) using the manual slow freezing...
Enhancing cattle production and management through convolutional neural networks. A review
Jean de Dieu Marcel Ufitikirezi, Roman Bumbálek, Tomáš Zoubek, Petr Bartoš, Zbyněk Havelka, Jan Kresan, Radim Stehlík, Radim Kuneš, Pavel Olšan, Miroslav Strob, Sandra Nicole Umurungi, Pavel Černý, Marek Otáhal, Luboš Smutný
Czech J. Anim. Sci., 2024, 69(3):75-88 | DOI: 10.17221/124/2023-CJAS
The rise in demand for animal products associated with global population growth has driven the world toward precision livestock farming, where convolutional neural networks (CNN) have gained increasing attention due to their potential to enhance animal health, productivity, and welfare. However, the effectiveness and generalizability of CNN applications in cattle production are limited by several challenges and limitations, which require further research and development to address. This systematic literature review aims to provide a comprehensive overview of the applications of CNN in cattle production. It identified some potential applications of...