Czech Journal of Animal Science - Latest articles
Results 31 to 60 of 141:
LGALS3 promotes the proliferation of Liaoning Cashmere goat skin fibroblasts by regulating the expression of PIEZO1
Mei Jin, Weiyu Fan, Jinxu Xu
Czech J. Anim. Sci., 2025, 70(3):102-112 | DOI: 10.17221/72/2024-CJAS 
Long non-coding RNA (lncRNA) plays a role in the reconstruction of hair follicles and in the formation and growth of cashmere fibres. One cashmere growth-associated lncRNA was successfully screened out at the early stage in the laboratory, which was named LncRNA MTC. In this study, the binding of galectin 3 (LGALS3) to LncRNA MTC was examined through RNA immunoprecipitation (RIP) in skin fibroblasts of Liaoning Cashmere goats. The pLenti-LGALS3-His-IRES-EGFP lentiviral overexpression vector was built, and the result of CCK8 indicated that the overexpression of LGALS3 significantly enhanced the viability of skin fibroblasts (P < 0.05)....
Analysis of the mare breeding population of Haflinger breed in the Czech Republic
Michaela Kuli¹»áková, Eva Sobotková, Radek Filipèík
Czech J. Anim. Sci., 2025, 70(3):83-92 | DOI: 10.17221/8/2025-CJAS
The aim of this study was to analyse the conformation traits and body dimensions of Haflinger mares registered in the Czech Republic studbook. The study focused on the effects of age at studbook entry, year of birth, proportion of Arabian genes, and country of origin on various parameters. Data were collected from 825 mares, including scores obtained during the studbook entry evaluation and body measurements such as withers height measured with a stick (WHS), withers height measured with a tape (WHT), chest girth (CG), and cannon bone circumference (CBC). Based on these data, the bone index (BI) and body massiveness index (MI) were calculated. Statistical...
Analysis of ejaculate parameters and sperm morphology in roosters of initial laying strains
Ladislav Máchal, Tomá¹ Kopec, Zuzana Reèková, Radek Filipèík, Milan Veèeøa, Vojtìch Pe¹an, Eva Tùmová
Czech J. Anim. Sci., 2025, 70(2):72-81 | DOI: 10.17221/203/2024-CJAS
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...
Broilers responses to dietary wormwood administration under Eimeria-challenged conditions
David Zapletal, Radka Dob¹íková, Martina Kos»uková, Vlastimil ©imek, Helena Støíbrná, Bøetislav Koudela
Czech J. Anim. Sci., 2025, 70(2):55-63 | DOI: 10.17221/188/2024-CJAS
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...
Selected measurements of pork carcass geometry and association with slaughter value
Piotr Janiszewski, Dariuzs Lisiak, Karol Borzuta, Eugenia Grze¶kowiak, Piotr ¦lósarz
Czech J. Anim. Sci., 2025, 70(2):43-54 | DOI: 10.17221/161/2024-CJAS
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....
Effect of dehulled lupin seeds in feed mixture on muscle protein quality of ducklings
Eva Straková, Lucie V¹etièková, Pavel Suchý, Martin Kutlva¹r
Czech J. Anim. Sci., 2025, 70(2):64-71 | DOI: 10.17221/9/2025-CJAS
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...
Association between polymorphism within rabbit IGF1 gene and slaughter weight in Termond White rabbits
Anna Migda³, Sylwia Ewa Pa³ka, Micha³ Kmiecik, Olga Jarnecka, Ewelina Semik-Gurgul, £ukasz Migda³
Czech J. Anim. Sci., 2025, 70(1):33-41 | DOI: 10.17221/59/2024-CJAS
Growth traits belong to the most important economic traits in livestock. One of the genes involved in vertebrate growth and development is insulin-like growth factor 1 (IGF1). Therefore, in our study we hypothesised that within the sequence of rabbit IGF1 gene it is possible to identify a polymorphism that may influence growth, carcass or meat traits in rabbits. We identified 6 polymorphisms (g.89259430T>C; g.89259338C>G; g.89259328T>C; 89210029A>G; 89210349C>G and g.89194199C>T) within introns of the IGF1 gene. One polymorphism, g.89194199C>T, was analysed using polymerase chain reaction high-resolution melting...
Somatic cells and bacteriological examination of milk samples of goats
Barbora Gancárová, Kristína Tvaro¾ková, Michal Uhrinèa», Lucia Maèuhová, Juliana Maèuhová, Vladimír Tanèin
Czech J. Anim. Sci., 2025, 70(1):26-32 | DOI: 10.17221/163/2024-CJAS
Mastitis, mainly caused by contagious bacteria, is an important disease in dairy goat production, especially subclinical mastitis. The aim of the research was to study the relationship between somatic cell count (SCC) and presence of mastitis pathogens in goat milk during the period 2022–2024. A total of 987 udder-half milk samples were obtained from 5 goat farms in Slovakia. The presence of pathogens was determined by bacterial cultivation and grown colonies were identified by MALDI-TOF MS at the species level. Fossomatic 7 was used to determine SCC. To evaluate the frequency distribution of the samples, the following groups of SCC were...
Validation of the evaluation of longevity by weighted analysis
Daniela Fulínová, Jiøí Bauer, Lubo¹ Vostrý
Czech J. Anim. Sci., 2025, 70(1):17-25 | DOI: 10.17221/157/2024-CJAS
We applied the Interbull validation methodology, a widely accepted method in animal breeding, to assess novel weighted and nonweighted repeatability models for the prediction of breeding values for longevity in Czech Holstein cattle. The population included in the estimation also contained 58 704 animals with genotypes. Performance records from 1 055 814 cows in the full dataset and from 831 995 cows in the trimmed dataset were used for evaluation. Both linear models included effects of herd-year-period, animal, permanent environment, and correction for milk production of individual cows in relation to herd average lactation curve, differing...
Mid-infrared milk screening as a phenotyping tool for feed efficiency in dairy cattle
Ludmila Zavadilová, Eva Ka¹ná, Zuzana Krupová, Alena Pechová, Petr Fleischer, Soòa ©losárková
Czech J. Anim. Sci., 2025, 70(1):1-16 | DOI: 10.17221/165/2024-CJAS
Feed efficiency (FE) is one of the most essential traits in dairy cattle, primarily due to the high cost of feed, which constitutes a significant portion of dairy herd expenses. Unfortunately, assessing FE in individual cows requires precise measurement of feed consumption, a labour-intensive and expensive process that is impractical for group-fed cows on production farms. Efforts have been made to predict FE or, more precisely, dry matter intake (DMI), using predictors such as a body weight (BW), milk yield (MY), and milk composition. Recently, Fourier transform mid-infrared (FT-MIR) spectroscopy has been proposed as a tool to enhance the accuracy...
A decision support system for herd health management for dairy farms
Jan Saro, Tomá¹ ©ubrt, Helena Bro¾ová, Robert Hlavatý, Jan Rydval, Jaromír Ducháèek, Ludìk Stádník
Czech J. Anim. Sci., 2024, 69(12):502-515 | DOI: 10.17221/178/2024-CJAS
Industrial dairy farms boast highly advanced health monitoring and disease diagnosis systems. But without easily accessible, user-friendly web platforms for real-time decision-making, most dairy farmers cannot proactively manage herd health management and optimize treatments based on disease prediction and prevention. To bridge this gap, we have developed a web application of a Decision support system (DSS) for dairy health management based on machine learning. The system architecture combines a Flask backend with a React frontend and scalable cloud data storage and includes preprocessing, data integration, predictive modelling, and cost analysis....
Effects of tryptophan supplementation on performance, intestinal morphology and protein abundance of tight junction protein and indoleamine 2, 3-dioxygenase in weaned pigs
Pei Mao, Naizhi Hu, Mengmeng Gao, Lingping Zhao, Chengsheng Song, Wenfeng Ma
Czech J. Anim. Sci., 2024, 69(12):493-501 | DOI: 10.17221/65/2024-CJAS
This study determined the effect of tryptophan (Trp) supplementation on the protein abundance of intestinal tight junction and indoleamine 2, 3-dioxygenase (IDO) in weaned pigs. Ninety-six White × Landrace × Duroc piglets (5.31 ± 0.54 kg) were selected in a growth trial and the experiment lasted for 30 days. The basal diet based on corn and soybean contained Trp at 2.4 g/kg. The dietary treatments consisted of a basal diet or a basal diet + 500 mg/kg Trp. On the 31st day, 12 pigs (1 pig per pen) were randomly selected and slaughtered in order to collect samples for subsequent analysis. Dietary supplementation with Trp improved the villus...
Effect of dehulled lupin seeds in feed mixture on muscle protein quality of broiler chickens
Eva Straková, Lucie V¹etièková, Pavel Suchý, Martin Kutlva¹r
Czech J. Anim. Sci., 2024, 69(12):484-492 | DOI: 10.17221/156/2024-CJAS
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. Two hundred and forty ROSS 308 broiler chickens were divided into 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). The production parameters and the amino acid spectrum of breast and thigh muscles were evaluated up to 34 days of age. Final live weight of broiler chickens was not significantly affected...
Evaluation of weaning diets for sustainable indoor largemouth bass (Micropterus salmoides) larviculture
Jovanka Lukiæ, Norbert Vass, László Ardó, Jelena Stanivuk, Éva Lengyel-Kónya, Nata¹a Goliæ, Zsuzsanna Jakabné Sándor, Uro¹ Ljubobratoviæ
Czech J. Anim. Sci., 2024, 69(12):471-483 | DOI: 10.17221/129/2024-CJAS
This research evaluated the suitability of commercially available larval feeds, Otohime B2 (OB2), Aller Infa (AI), and Aqua Start (AS), and one Experimental Feed (EF), for the weaning of largemouth bass (Micropterus salmoides), LMB. Feeds were presented with various ω-3 fatty acid levels/bioavailability (high in OB2 and AI), fat percentage (high in OB2 and AS), free amino acid and short peptide (FAA + SP) levels (high in OB2), and various soluble protein (SPR) levels (high in AS and EF). Fish were co-fed Artemia plus OB2 from the 19th to 22nd day post-hatching (DPH), then Artemia in addition...
Pedigree analysis of the Latvian Warmblood horse heavy type population
Viktorija Nikonova, Daina Jonkus, Liga Paura
Czech J. Anim. Sci., 2024, 69(11):462-469 | DOI: 10.17221/147/2024-CJAS
A breeding program has been developed for the Latvian warmblood heavy type horses in Latvia, with the aim to preserve this type, because the number of these horses is small and the status of the local endangered breed has been granted. The aim of the study was to analyse the genetic structure, inbreeding and effective population size of the Latvian warmblood heavy type (LSB) horse population. Horses that were living at the time of the study on January 1, 2023 were used for the study. A total of 374 genetic resources live horses were analysed. Population structure analysis, inbreeding and effective population size were investigated. Calculations...
Dietary antioxidant supplementation improves the in vitro quality and antioxidant capacity of Colombian Creole stallion semen
Maria Claudia Puerta, Laura Henao-Salazar, Isabel Catalina Vélez, Sergio León, Banjamín Rojano, Giovanni Restrepo, Alexandra Úsuga
Czech J. Anim. Sci., 2024, 69(11):450-461 | DOI: 10.17221/98/2024-CJAS
Dietary antioxidant supplementation has become popular for managing male infertility because of its impact on the antioxidant capacity of semen. This study evaluates the effect of dietary antioxidant supplementation on the seminal characteristics of Colombian Creole horses. Semen from six Colombian Creole stallions was collected using an artificial vagina. The stallions were randomly allocated to a control group (CG) or a supplementation group (SG) that received a multi-antioxidant supplement. A repeated measures design, with a wash out period of two weeks between treatments, was used. Sperm motility and kinematics were assessed using a computer-assisted...
The effect of the dried Gracilaria spp. undergoing different drying methods on in vitro rumen fermentation
Farwa Shakeel, Yeni Widiawati, Sharly Asmairicen, Agung Purnomoadi, Agustin Herliatika, Yenny Nur Anggraeny, Setiasih Setiasih, Muhammad Rizwan, Ruslan Abdul Gopar, Antonius Antonius, Igit Atang Sunante, Idris Idris, Susi Riyanti, Winwin Widaringsih, Faizan Ahmad Shakir, Saad Irfan
Czech J. Anim. Sci., 2024, 69(11):441-449 | DOI: 10.17221/75/2024-CJAS
Seaweed has an important role in the mitigation of enteric methane (CH4) production by ruminant animals. The utilisation and its effectiveness in enteric CH4 reduction require a preservation process. The aim of the study was to investigate the effect of different drying processes on the effectiveness of seaweed Gracilaria spp. in reducing CH4 production assessed through an in vitro method. Three drying techniques, sun-drying, oven-drying, and freeze-drying, were applied to produce a dried product of Glacilaria spp. Rice straw basal diets combined with concentrate at the 70 : 30% were...
Quality and in vitro fertilising ability of cryostored Pinzgau bull insemination doses
Lucia Olexiková, Linda Dujíèková, Jaromír Va¹íèek, Andrej Balá¾i, Andrea Svoradová, Lenka Ku¾elová, Alexander Makarevich, Peter Ivaniè, Peter Chrenek
Czech J. Anim. Sci., 2024, 69(11):431-440 | DOI: 10.17221/142/2024-CJAS
Applicability of cryopreserved insemination doses is dependent on the quality of the semen after thawing. The aim of the study was to check the options of new markers for the assessment of sperm quality to predict their fertilisation ability. In five bulls of the Pinzgau breed, the sperm fertilising ability was determined using the in vitro fertilisation. Bulls were divided according to the achieved blastocyst rate: bulls with good fertilising ability (NOB – 38.6%, KAZ – 28.9%, GAL – 29.3%) and bulls with low fertilising ability (LOH – 19.4%, NUS – 22.1%). In addition to the sperm motility and morphology,...
A survey on rabbit meat perception and consumption in seven countries
Katalin Szendrõ, Antonella Dalle Zotte, Nikoletta Fülöp, Mónika Zita Nagy
Czech J. Anim. Sci., 2024, 69(10):419-429 | DOI: 10.17221/123/2024-CJAS
The aim of the study was to examine the rabbit consumption habits and opinions of people living in countries that regularly consume rabbit meat. Snowball sampling of data collection was used, a total of 1 860 error-free questionnaires were evaluated. Most of the completed questionnaires came from Hungary, Italy, Spain, China, Poland, France and Mexico. It is to note that 21.3% of respondents have not yet consumed rabbit meat: China (32.1%), Hungary (24.7%), Poland (22.4%), and France (4.8%). The main reasons for not consuming rabbit meat were emotional reasons (22.3%), it does not fit their dietary habits (15.7%). There are 28.7% of respondents...
Glutamine protects cow's ruminal epithelial cells from acid-induced injury in vitro
Yuanxiao Li, Yan Yu, Feiyan Zhao, Zihan Zhao, Mengying Dou, Zhijun Cao, Wang Li, Ke Ding, Cai Zhang
Czech J. Anim. Sci., 2024, 69(10):410-418 | DOI: 10.17221/170/2023-CJAS
This study was conducted to investigate the effects and mechanisms of glutamine (Gln) on the repair of acid-induced injury in dairy cow ruminal epithelial cells (RECs) in vitro. Dairy cow RECs were cultured in a medium with pH of 5.5 for 3 h and subsequently treated with various concentrations of Gln (4, 8, 12, 32 mmol/l) for 12 h. The messenger ribonucleic acid (mRNA) expression levels of occludin (OCLN), claudin 1 (CLDN1), toll-like receptor 2 (TLR2), toll-like receptor 4 (TLR4) and genes for inflammatory factors were measured using reverse transcription-quantitative real-time PCR (RT-qPCR)....
Comparative study: Efficacy of egg-yolk vs soy lecithin-based diluent in preservation of chilled bovine semen – Bacteriology and sperm quality
Michal Ïuraèka, Filip Benko, Miroslava Kaèániová, Eva Tvrdá
Czech J. Anim. Sci., 2024, 69(10):400-409 | DOI: 10.17221/138/2024-CJAS
This study compared the efficacy of the egg yolk (EY) and soy lecithin (SL) semen extender during 72-h storage at 4 °C in the presence/absence of streptomycin, penicillin, lincomycin, and spectinomycin. Bull semen samples (n = 12) were obtained and stored in either ANDROMED® (SL extender) or TRILADYL CSS® (EY extender). After 24, 48, and 72 h of storage at 4 °C, bacterial colonies (CFU – colony forming units) were grown and counted on tryptic soy and blood agar, and the bacterial isolates were identified using the MALDI-TOF MS Biotyper. Sperm motility, mitochondrial membrane potential (MMP), membrane...
Approach to creating an intelligent system for free-range livestock farming
Radka Malinova, Pencho Malinov, Evgeni Valchev, Todorka Glushkova
Czech J. Anim. Sci., 2024, 69(10):389-399 | DOI: 10.17221/90/2024-CJAS
The development of intelligent systems for the tracking of free-range livestock is a challenge to both information and communication technology (ICT) scientists and those in the animal sciences. Cyber-physical systems make it possible to track and control processes involving intelligent objects from the physical and virtual worlds. In the case of free-range grazing, it is necessary to manage processes in two domains ‒ that of the intelligent pasture management and that of the animals. Due to the differences in the conditions of different types of pastures – plain or high land and the characteristics of the cattle breeds, ready-made...
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 Sütõ, 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.
Jiøí Bezdíèek, Andrea Nesvadbová, Jaromír Ducháèek, Jana Sekaninová, Ludìk Stádník, Martina Jankù
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 Hanu¹, Eva Samková, Jindøich Èítek, Hana Nejeschlebová, Eva Dadáková, Lucie Hasoòová, Michael Rost, Irena Nìmeèková, Karolína Reindl, Markéta Borková, Ondøej 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%,...