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This study aimed to investigate effects of chicken age on proliferation and differentiation capacity of muscle satellite cells (MSCs) and to determine total amino acid contents of cultured meat (CM) produced. Chicken MSCs (cMSCs) were isolated from hindlimb muscles of broiler chickens at 5-week-old (5W) and 19-embryonic-day (19ED), respectively. Proliferation abilities (population doubling time and cell counting kit 8) of cMSCs from 19ED were significantly higher than those from 5W (p<0.05). Likewise, both myotube formation area and expression of myosin heavy chain heavy of cMSCs from 19ED were significantly higher than those from 5W (p<0.05). After cMSCs were serially subcultured for long-term cultivation in 2D flasks to produce cultured meat tissue (CMT), total amino acid contents of CMT showed no significant difference between 5W and 19ED chickens (p>0.05). This finding suggests that cMSCs from chicken embryos are more suitable for improving the production efficiency of CM than those derived from young chickens.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11377197 | PMC |
http://dx.doi.org/10.5851/kosfa.2024.e72 | DOI Listing |
Poult Sci
August 2025
Optima Life Sciences Private Limited, Pune Maharashtra, 411009, India.
Antibiotic growth promoters (AGPs) are increasingly subject to global regulatory restrictions and consumer pressure, driving the poultry industry toward antibiotic-free production systems. This shift has accelerated the search for effective alternatives, including innovative microbial additives, organic acids, phytogenics, and other bioactive compounds capable of supporting digestive function and enhancing immune competence in poultry. The present study reported the isolation and characterization of a novel Bacillus velezensis strain, BV-OLS1101, possessing robust probiotic attributes and a distinctive capacity to produce a serine protease subtilisin.
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August 2025
Department of Population Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands.
Colibacillosis, caused by avian pathogenic Escherichia coli (APEC), is a disease of major economic importance to the broiler industry. This study aimed to investigate genetic variation in susceptibility to colibacillosis by comparing four pure broiler breeder lines and their commercial four-way cross offspring. Three consecutive experiments were performed assessing mortality, growth retardation and mean lesion scores (MLS) after E.
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September 2025
Poultry Genetics and Breeding Division, ICAR-Directorate of Poultry Research, Rajendranagar, Telangana-500030, India.
Objectives: Vanaraja is a highly successful backyard chicken variety developed by crossing males of Vanaraja male line (PD-1) with females of Vanaraja female line (PD-2). Vanaraja was improved over the generations through selection in parent lines. This study was designed to estimate the genetic parameters and trend for major traits in PD-2 line in order to determine the future breeding strategy in the population.
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August 2025
College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, 410000, China; Hunan Provincial Engineering Research Center for Safe Poultry Production, Changsha, Hunan 410128, China; Yuelushan Laboratory, Changsha, Hunan 410128, China. Electronic address:
Sexual maturity significantly impacts poultry production efficiency, yet data on testicular development and regulatory mechanisms in indigenous breeds remain limited. In this study, we examined Xianghuang chickens, a indigenous early-maturing breed, to investigate the hypothalamus-pituitary-testis (HPT) axis. Hypothalamus, pituitary, and testis tissues were collected at 80 and 120 days post-hatch (dph) for analysis.
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August 2025
Department of Agricultural Education, Faculty of Industrial Education and Technology, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand. Electronic address:
Bruising chicken broiler is caused by physical stress and injury to the skin and underlying tissues is a major problem in poultry production, affecting both animal welfare and economic outcomes. The aim of this study was to classify the bruising class (low or high percentage of carcass showing bruise at slaughterhouse) per truckload comparing the predictive performance of six machine learning (ML) models- Least Absolute Shrinkage and Selection Operator (LASSO), Classification Tree (CT), Random Forest (RF), Naïve Bayes (NB), Support Vector Machine (SVM), and Extreme Gradient Boosting (XGB)- and using a data set including information about season, time of transport, sex of the flock, flock size, chicken age, chicken mean body weight, housing stocking density, on farm mortality and culling rate, and feed withdrawal time. The general objective was to offer tools for the early detection of flocks with a higher likelihood of bruising and to highlight how ML can support decision-making, strengthen welfare monitoring programs, and reduce economic losses in commercial broiler production.
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