Czech Journal of Animal Science - Latest articles

Results 31 to 60 of 108:

Effects of BRCA1 and TLR1 SNPs on milk production performance and somatic cell score in Holstein, Simmental and crossbred Holstein cattle

Maja Maurić Maljković, Tomislav Mašek, Marija Špehar, Kristina Starčević

Czech J. Anim. Sci., 2025, 70(7):267-275 | DOI: 10.17221/43/2025-CJAS  

Mastitis is a complex, common and economically problematic issue in dairy cattle production. In this study, breast cancer 1 (BRCA1) and toll-like receptor 1 (TLR1) genes were taken as candidate genes for mastitis resistance. This study investigated whether BRCA1 and TLR1 genes were associated with milk production traits (daily milk yield, fat, and protein content) and somatic cell score (SCS). A total of 105 cows (25 Holstein, 48 Simmental, and 32 crossbred Holstein) were genotyped using the PCR-RFLP method. Cows with the BRCA1 c.46126G>T GG genotype had significantly lower SCS than the other genotypes....

Regional patterns and cluster analysis of agricultural methane emissions in the EU-27 countries

Klára Bartoňová, Jan Saro, Mansoor Maitah, Jaromír Ducháček

Czech J. Anim. Sci., 2025, 70(7):253-266 | DOI: 10.17221/26/2025-CJAS  

Agricultural methane emissions strongly contribute to global greenhouse gas production. Under these circumstances, meeting international climate goals, including the Global Methane Pledge or the European Green Deal, requires developing targeted mitigation strategies. However, research using advanced clustering techniques in a multilevel context remains scarce and mostly limited to CO₂ emissions. This lack of time-series studies addressing regional variability hinders efforts to develop effective mitigation strategies. This study addresses three main research questions: (i) What are the main trends in agricultural methane emissions...

Synergistic effects of dried Padina sp. and prebiotic on growth, histology, and growth-related gene expression in European seabass (Dicentrarchus labrax)

Metin Yazici

Czech J. Anim. Sci., 2025, 70(7):286-299 | DOI: 10.17221/194/2024-CJAS  

This study evaluated the effects of feeding European seabass (Dicentrarchus labrax) that developed from the fingerling to juvenile stage a diet supplemented with a blend of Padina sp. and GroBiotic^®-A over a 12-week period. A total of 480 fish (initial weight: 2.08 ± 0.06 g) were randomly allocated to four groups, each comprising three replicates. The fish were fed to satiation with diets containing varying proportions of Padina sp. and GroBiotic^®-A: 0% Padina sp. and 0% GroBiotic^®-A (0P0G), 1% Padina sp. and 1% GroBiotic^®-A (1P1G), 2% Padina sp....

Genomic diversity characteristics of sheep populations in the Czech Republic, Slovakia, Serbia and Montenegro

Gábor Mészáros, Birgit Fürst-Waltl, Johann Sölkner, Hana Vostrá-Vydrová, Jan Calta, Milena Đokić, Božidarka Marković, Dragan Stanojević, Vladan Bogdanovic, Nina Moravčíková, Monika Chalupková, Adrián Halvoník, Radovan Kasarda, Luboš Vostrý

Czech J. Anim. Sci., 2025, 70(6):234-241 | DOI: 10.17221/69/2025-CJAS  

Monitoring the genetic diversity in livestock is a critical component for sustainable management of small and endangered breeds. In this paper we follow up the two most often used metrics of genetic diversity, the average inbreeding coefficients (F) and the effective population (N_e) size in 16 sheep breeds from four countries. The analysis was based on single nucleotide polymorphism (SNP) markers, with about 35 to 49 thousand SNPs and 19 to 98 individuals after quality control. The runs of homozygosity (ROH) method with the cgaTOH software was used to estimate F_ROH, for three different time points in the...

Consumer perceptions of lab-grown cells: Awareness, barriers, and the power of information. A review

Katalin Szendrő

Czech J. Anim. Sci., 2025, 70(6):203-222 | DOI: 10.17221/31/2025-CJAS  

Lab-grown cells (also known as cell-based or cultured meat) are novel food innovations that face uncertain consumer acceptance. This review examines recent research (2020–2024) on consumer perceptions of lab-grown cells, focusing on three main areas: (1) public awareness and familiarity, (2) psychological and cultural aspects shaping perceptions, and (3) the impact of information on acceptance. Results show that the awareness of lab-grown cells varies widely across regions; in countries with high meat consumption, such as the USA and Australia, or where culinary delights are highly valued, such as France, respondents rated lab-grown cells...

The role of spent coffee ground extracts as natural antioxidant supplements in the diet of Nile Tilapia (Oreochromis niloticus)

Khamanitjaree Saripan, Urailuck Pongket, Suriya Udduang, Supalug Kattakdad

Czech J. Anim. Sci., 2025, 70(6):242-252 | DOI: 10.17221/29/2025-CJAS  

This study evaluated the potential of spent coffee grounds extract (CGE) as an antioxidant supplement in the diet of Nile tilapia (Oreochromis niloticus). Four experimental diets with varying CGE levels were formulated: 0% (CGE0, control), 2% (CGE2), 4% (CGE4), and 6% (CGE6). Nile tilapia (initial mean body weight = 38.65 ± 0.85 g) were cultured in fiberglass tanks at a stocking density of 20 fish/m² under continuous aeration. The fish were fed three times daily at 5% of their total body weight. After an 8-week experimental period, the fish fed CGE-supplemented diets exhibited significantly higher growth rate compared to the...

The potential of tannin from Sonneratia alba fruit in defaunation of rumen protozoa and reducing methane gas production: An approach to increase livestock digestive efficiency

Roni Pazla, Antonius Antonius, Zaitul Ikhlas, Anuraga Jayanegara, Laily Rinda Ardani, Maureen Chrisye Hadiatry, Jumjunidang Jumjunidang, Tri Budiyanti, Firsoni Firsoni, Ardinal Ardinal, Kasma Iswari, Dewi Febrina, Eli Ratni

Czech J. Anim. Sci., 2025, 70(6):223-233 | DOI: 10.17221/130/2024-CJAS  

This research explores the addition of mangrove (Sonneratia alba) fruit to reduce the production of methane and the total population of protozoa. The dosage for adding mangrove fruit is 0% (without addition), 1.5%, 3%, and 4.5% in sugarcane tops-based feed. Results include ruminal product fermentation, gas and methane emissions, total protozoa, microbial protein production, microbial biomass, and nutrient digestibility. The research findings showed that an additional 1.5% to 4.5% dose can reduce methane gas emissions and the total number of protozoa. The total number of protozoa at 4.5% (T3) reached 9.89 × 10⁴ cells/ml and methane...

Effect of polyphenol-rich oil palm empty fruit bunch extract on in vitro rumen fermentation, fatty acid profile and microbial population

Nur Liyana Akmal Harun, Anjas Asmara Samsudin, Awis Qurni Sazili, Yong Meng Goh

Czech J. Anim. Sci., 2025, 70(5):161-172 | DOI: 10.17221/180/2024-CJAS  

The aim of this study was to evaluate the effect of oil palm empty fruit bunch (OPEFB) extract on in vitro rumen fermentation, fatty acid profile, and microbial population. Rumen fluid was obtained from three female dairy goats fed a similar diet of 60% Napier grass and 40% commercial pellets. The substrate used for the fermentation was a Napier grass and commercial pellet mixture (60 : 40 in dry matter) and the treatment diets were: CON (substrate without OPEFB extract), OPEFB-5 (substrate with 5% of OPEFB extract), OPEFB-10 (substrate with 10% of OPEFB extract). The characteristics of rumen fermentation including pH, fermentation...

Genetic diversity and population structure of a Creole sheep flock from Uruguay

Beatriz Carracelas, Pablo Peraza, Brenda Vera, Silvia Llambi, Gabriel Ciappesoni

Czech J. Anim. Sci., 2025, 70(5):173-182 | DOI: 10.17221/93/2024-CJAS  

Since 2020, the National Agricultural Research Institute (INIA) has conserved a Creole sheep flock at INIA Las Brujas. This study genetically characterised this population and compared it with six others: San Miguel National Park Creoles, commercial farms Creoles, Brazilian Creoles, Corriedale, Merilin and Soay sheep. The analysis included 628 individuals and 31 392 autosomal SNPs. Soay and San Miguel National Park Creoles exhibited the lowest genetic diversity (Ho = 0.266 and 0.279) and highest inbreeding (F_HOM: 0.283 and 0.249; F_ROH: 0.199 and 0.202). Merilin and Corriedale showed the highest genetic diversity (Ho = 0.351...

Effects of two protein levels on the performance of chicken males with different growth intensities

Jan Tyl, Eva Tůmová, Darina Chodová

Czech J. Anim. Sci., 2025, 70(5):194-201 | DOI: 10.17221/44/2025-CJAS  

At present, genetic selection programs produce chicken genotypes with different growth intensities, which might have variable requirements for dietary protein. The objective of this study was to compare the response of three different genotypes to two levels of crude protein in feed mixtures. Cockerels of fast-growing Ross 308, medium-growing Hubbard JA 757 and slow-growing ISA Dual chickens were used in the study. Each genotype was fed diets that differed in protein level: the control group (C) received commercial feed, and the experimental group was fed a diet with a 6% lower protein content (LP). The daily weight gain (DWG) and feed conversion ratio...

Different particle sizes of laying hens diets and it’s effect on blood biochemical parameters, ileal digesta viscosity and nitrogen retention

Ondřej Šťastník, Dana Zálešáková, Jakub Novotný, Vojtěch Kumbár, Andrea Roztočilová, Eva Mrkvicová, Leoš Pavlata

Czech J. Anim. Sci., 2025, 70(5):183-193 | DOI: 10.17221/11/2025-CJAS  

The aim of this work was to evaluate the effect of different particle sizes of hens diets on blood biochemical parameters, ileal digesta viscosity and nitrogen retention. In the experimental part, the effects of different physical structure were investigated on two groups of laying hens of the Bovans Brown hybrid from 76 to 80 weeks of age. A finely ground mash diet [geometric mean diameter (GMD), 632 µm] and a coarsely ground mash diet (GMD, 1 258 µm) with the equal nutritional content were used. In the experiment, the particle sizes of the feed mixtures were analysed and compared with the particle size of unaccepted feed residues using...

Mesobiliverdin IXα-enriched microalgae feed improves gut health in weaned piglets under LPS challenge

Tz-Shian Liao, Pei-En Chang, Yi-Ting Chen, Ching-Yi Chen, Cheng-Wei Tom Chang, Jon YutakaTakemoto, Yuan-Yu Lin

Czech J. Anim. Sci., 2025, 70(4):139-146 | DOI: 10.17221/159/2024-CJAS  

This study aimed to evaluate the effect of mesobiliverdin IXα-enriched microalgae (MBV-SP) on growth, diarrhoea prevalence, intestinal morphology, antioxidant capacity, and inflammatory cytokines in lipopolysaccharide (LPS)-induced enteritis in weaned piglets. Seventy-two 28-day-old piglets were randomly divided into four groups: control (NC), LPS, tylosin, and MBV-SP, with saline/LPS (100 µg/kg) administered intraperitoneally on day 14. Results showed reduced mortality and diarrhoea rates in the tylosin + LPS and MBV-SP + LPS groups compared to the LPS group. Histological analysis revealed improved villus morphology and decreased crypt...

Impact of microclimatic conditions on sperm production in Czech Holstein bulls: A correlational study

Filipp Georgijevič Savvulidi, Jaromír Ducháček, Martin Ptáček, Matúš Gašparík, Veronika Kovářová, Radim Codl, Luděk Stádník

Czech J. Anim. Sci., 2025, 70(4):121-129 | DOI: 10.17221/21/2025-CJAS  

In this study, the influence of microclimatic conditions in different seasons of the year (including the hottest months) on the quantitative and qualitative characteristics of ejaculates of Czech Holstein bulls was assessed. Bulls were kept in the facility with no forced ventilation or air conditioning. To determine the influence, the temperature-humidity index (THI) was calculated based on the microclimatic parameters measured directly in the facility with the animals. Bull sperm was obtained using an artificial vagina on five occasions throughout the year, in different seasons of the year including the hottest months. Semen was assessed for...

Effects of low-protein diet supplemented with exogenous protease on growth performance and intestinal health of broiler chickens

Xin Hao, Guifeng Zhang, Yilin Ge, Jie Wang, Weiren Yang, Lijie Yang

Czech J. Anim. Sci., 2025, 70(4):147-159 | DOI: 10.17221/18/2025-CJAS  

This experiment was conducted to study the effects of low-protein diet supplemented with exogenous protease on performance and intestinal health of broilers. A total of 560 one-day-old male Arbor Acres broiler chickens were randomly divided into 5 treatments with 8 replicates (12 birds per replicate) in a completely randomised design. The treatments were as follows: (1) maize-soybean meal basal diet (CON); (2) negative control with crude protein being 1% lower than in CON (NCON); (3) NCON + 12 000 U/kg coated alkaline protease (NCAP); (4) NCON + 16 000 U/kg alkaline protease (NAP); (5) NCON + 16 000 U/kg keratinase (NKA). The remaining 80 birds (10 replicates,...

Relationships among clinical mastitis test-day records, somatic cell counts, and linear udder conformation traits in Czech dairy cows

Jan Vařeka, Ludmila Zavadilová, Matúš Gašparík, Miloslava Štípková, Luboš Vostrý

Czech J. Anim. Sci., 2025, 70(4):130-138 | DOI: 10.17221/12/2025-CJAS  

This study evaluated test-day records of clinical mastitis (CM), somatic cell count, and nine udder conformation traits. Somatic cell count was log-transformed into somatic cell score (SCS) in 10 periods, each 30 days long and overall, for the first lactation. CM is a complex disease closely connected with somatic cell count. The optimum udder conformation traits significantly affect dairy cattle health. The CM binary trait was monitored in seven periods throughout lactation, each 50 days long, and for the whole lactation. A logistic regression model was used to estimate the risk of CM. The model included a fixed effect of herd-year-season, age...

Whole-genome resequencing data reveal the genetic diversity of local chickens in southern Zhejiang and surrounding areas in China

Yawen Zhang, Bo Zhang, Ziwei Li, Fengxiang Hou, Yan Zhao, Junjie Jin, Bin Song, Wenjie Gu

Czech J. Anim. Sci., 2025, 70(3):113-120 | DOI: 10.17221/186/2024-CJAS  

China’s local chicken breeds, especially those in the Zhejiang Province, are rich in genetic diversity owing to environmental heterogeneity and complex ecosystems. Distinctive local breeds have emerged through long-term natural selection and domestication. We investigated the genetic diversity and population structure of local chickens in southern Zhejiang and surrounding areas using whole-genome resequencing of 129 chickens from seven populations. A total of 1.8 terabytes of raw data was obtained, and 4 802 728 single nucleotide polymorphisms were detected. The Xianju chicken population exhibited the highest genetic diversity, while Yandang...

Association between conventional semen variables and sperm freezability in rams

Aizhan Makhanbetova, Filipp Georgijevič Savvulidi, Martin Ptáček, Lucie Langerová, Beybit Kulataev, Nurlan Malmakov

Czech J. Anim. Sci., 2025, 70(3):93-101 | DOI: 10.17221/185/2024-CJAS  

Assessments of routine ejaculated samples were used to evaluate the conventional semen variables (sperm motility, semen volume, sperm concentration) as initial decision-making criteria to freeze or not to freeze. However, the association of these attributes to the cryotolerance of ram sperm has not been adequately studied yet. The aim of this study was therefore to analyse if the semen volume, sperm motility and concentration can be used to predict post-thaw ram sperm motility. Additionally, in the present study we tested if the order of ejaculate sampling (first versus second, within a single collection session) and the breed of rams influenced...

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 Kulišťáková, Eva Sobotková, Radek Filipčík

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, Tomáš Kopec, Zuzana Rečková, Radek Filipčík, Milan Večeřa, Vojtěch Pešan, Eva Tůmová

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 Dobšíková, Martina Kosťuková, Vlastimil Šimek, Helena Stříbrná, Břetislav 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 Grześkowiak, Piotr Ślósarz

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 Všetičková, Pavel Suchý, Martin Kutlvašr

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 Migdał, Sylwia Ewa Pałka, Michał Kmiecik, Olga Jarnecka, Ewelina Semik-Gurgul, Łukasz Migdał

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 Tvarožková, Michal Uhrinčať, Lucia Mačuhová, Juliana Mačuhová, Vladimír Tančin

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, Jiří Bauer, Luboš 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 Kašná, Zuzana Krupová, Alena Pechová, Petr Fleischer, Soňa Šlosárková

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, Tomáš Šubrt, Helena Brožová, Robert Hlavatý, Jan Rydval, Jaromír Ducháček, Luděk 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 31^st 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 Všetičková, Pavel Suchý, Martin Kutlvašr

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...