Poultry Science最新文献

{"title":"Effects of dietary net energy, crude protein, and standardized ileal digestible lysine on growth performance, nitrogen utilization, and hepatic metabolism in 22-35 day-old broilers.","authors":"Yao Yu, Caiwei Luo, Tahir Mahmood, Li Chen, Yves Mercier, Jianmin Yuan","doi":"10.1016/j.psj.2026.107867","DOIUrl":"https://doi.org/10.1016/j.psj.2026.107867","url":null,"abstract":"<p><p>This study investigated the effects of dietary net energy (NE), crude protein (CP), and standardized ileal digestible lysine (SID Lys) densities on growth performance, nitrogen retention efficiency (NRE), and hepatic amino acid (AA) metabolism in male broilers from 22 to 35 days. A total of 936 Cobb 500 male broilers were assigned to 13 dietary treatments with 6 replicates of 12 birds using a Box-Behnken design. The design comprised three dietary NE levels (2200, 2290, and 2380 kcal/kg), three CP levels (18%, 19.5%, and 21%), and three SID Lys levels (1.08%, 1.14%, and 1.20%). The data showed that reducing dietary CP from 21% to 18% did not significantly affect body weight gain (BWG) but did significantly improve NRE (P < 0.05). Dietary CP reduction significantly down-regulated hepatic LKR and BCKDHa mRNA expression and tricarboxylic acid (TCA) cycle-related metabolites, while upregulating glycolysis-related enzymes. Increasing NE did not affect BWG but improved NRE (P < 0.05). High energy levels significantly down-regulated hepatic AMP and TCA cycle-related metabolites, while up-regulating mTOR and S6K1 mRNA expression in breast muscle. BWG responded linearly to increasing SID Lys levels (P < 0.05). However, dietary SID Lys levels showed a quadratic effect for NRE with an estimated optimal SID Lys level of 1.146% for maximum NRE. Increasing dietary SID Lys first increased, then reduced mTOR and S6K1 mRNA expression (P < 0.05). Our results revealed that reducing dietary CP from 21% to 18% did not compromise growth performance. A dietary combination of 1.20% SID Lys and 2380 kcal/kg NE (NE/SID Lys ratio of 198.3 kcal/g) appeared favorable for growth performance. For optimal nitrogen retention efficiency, a moderate SID Lys level of 1.146% with a SID Lys/CP ratio of 0.063 is recommended. These findings suggest that a low-CP diet can be effectively formulated by appropriately increasing SID Lys levels and maintaining adequate dietary energy, thereby achieving protein-sparing effects without sacrificing broiler growth.</p>","PeriodicalId":20459,"journal":{"name":"Poultry Science","volume":"105 12","pages":"107867"},"PeriodicalIF":4.5,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149184088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Theoretical model and parameter optimization of embryo eggshell perforation under impact.","authors":"Xin Wang, Mingyan Zhao, Chenyu Chen, Haoke Chen, Mingxuan Liang, Chuan He, Duo Fu, Xiaojing Zhu, Huiming Sun, Cheng Gao","doi":"10.1016/j.psj.2026.107394","DOIUrl":"10.1016/j.psj.2026.107394","url":null,"abstract":"<p><p>Prior to in-ovo vaccination, the eggshell must be perforated at the air cell region; however, inappropriate perforation parameters can easily cause hole-shape deformation, crack propagation, and shell membrane damage, thereby affecting hatching safety. To obtain low-damage perforation parameters, this study independently designed an impact perforation experimental device for embryo eggs, established a Pogorelov-Griffith bending-fracture coupled model, and optimized punch diameter D, impact velocity V, and impact force F by combining single-factor experiments, three-factor three-level orthogonal experiments, and GA-BP neural network optimization. The mechanical damage score S, constructed from the hole-shape deviation index DI and crack length CL, was used as the primary evaluation indicator, and the effects of the optimized parameters on hatch-of-viable, late embryonic mortality, visible contamination rate, methylene blue penetration, and shell membrane damage were further evaluated through simulated in-ovo manipulation experiments. The results showed that the effects of D, V, and F on S followed the order of \"D > V > F\". An increase in punch diameter significantly aggravated hole-shape deformation and crack propagation; impact velocity exhibited an optimal window within the range of 2.2-2.3 m/s; and results of impact force tended to stabilize near 1.5-1.6 N. The GA-BP model showed good predictive ability for S, with an overall R² of 0.91 and an RMSE of 0.02. Based on the combined results of mechanical optimization and biological validation, the recommended parameters were D = 2.0 mm, V = 2.25 m/s, and F = 1.6 N. This parameter group had the lowest S, milder dye penetration and shell membrane damage, a lower visible contamination rate, and the highest hatch-of-viable among the perforation-treated groups. This study indicates that S can serve as a mechanical evaluation indicator for screening low-damage perforation parameters, and the recommended parameter window can provide experimental evidence for optimizing eggshell perforation in in-ovo vaccination.</p>","PeriodicalId":20459,"journal":{"name":"Poultry Science","volume":"105 10","pages":"107394"},"PeriodicalIF":4.5,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13393663/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148550091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Combined effects of fenugreek-milk thistle-ginkgo and thyme-cinnamon-oregano feed additives on physicochemical and oxidative stability profiles of broiler meat.","authors":"Xiaofeng Zhang, Guangjie Chen, Chenglin Jin, Xibin Zhang, Yanbing Zhao, Hu Zhang, Jiecheng Zhang, Xiaoyu Song, Xiaomei Luan, Peng Li","doi":"10.1016/j.psj.2026.107396","DOIUrl":"10.1016/j.psj.2026.107396","url":null,"abstract":"<p><p>Chicken breast meat is susceptible to lipid and protein oxidation during post-mortem processing and storage, which adversely affects its physicochemical properties, nutritional value, and market acceptability. Most existing research has concentrated on single-component plant extracts as feed additives, whereas the combined effects of multi-plant additives remain insufficiently characterized. This study evaluated the effects of two composite plant-derived feed additives (Group A: Trigonella foenum-graecum, Silybum marianum, and Ginkgo biloba; Group K: Thymus vulgaris, Cinnamomum verum, and Origanum vulgare) and their combined supplementation (Group A+K) on the quality and oxidative stability of broiler breast meat, with particular emphasis on myofibrillar protein (MP) structure and water dynamics. A total of 32,000 one-day-old Ross 308 broilers were assigned to four dietary treatments (control, A, K, and A+K) and fed for 35 d. The analyzed indicators included shear force, texture profile, water-holding capacity (WHC), MP secondary structure, oxidative markers (carbonyl and thiol contents), surface hydrophobicity, solubility, particle size, and water distribution. Group A showed the greatest tenderization response, with an approximately 50% reduction in shear force compared with the control (P < 0.05). The A+K group showed enhanced combined responses, including a 9% increase in WHC and an 8.02% decrease in carbonyl content compared with the control (P < 0.05). All treatment groups exhibited an increased MP alpha-helix proportion, reduced surface hydrophobicity and particle size, and improved solubility (P < 0.05). The A+K group also improved adhesiveness and cohesiveness. LF-NMR analysis indicated that the dietary treatments promoted a shift from free water toward immobilized water, which was associated with improved WHC. Overall, these composite plant-derived additives, especially the A+K combination, may regulate broiler meat quality through multiple targets by attenuating protein oxidation, maintaining MP structural stability, and optimizing water distribution. These findings provide a practical basis for developing plant-derived feed formulations for high-quality and oxidatively stable broiler meat.</p>","PeriodicalId":20459,"journal":{"name":"Poultry Science","volume":"105 10","pages":"107396"},"PeriodicalIF":4.5,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13393654/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148550064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Novel expression and localization of hypoxia inducible factor 1 alpha (HIF1α) and selected angiogenesis-related factors in the oviduct of laying and non-laying hens.","authors":"Marta H Machura, Karolina Frydrych, Andrzej Sechman, Anna Hrabia","doi":"10.1016/j.psj.2026.107404","DOIUrl":"10.1016/j.psj.2026.107404","url":null,"abstract":"<p><p>Egg formation and oviposition in hens depend on a network of blood vessels that supply the oviduct with all the essential molecules. This network develops during angiogenesis, a process involving many regulators, including hypoxia inducible factor 1 alpha (HIF1α), the vascular endothelial growth factor (VEGF) system, and the angiopoietin (ANGPT) system. Given the lack of information on HIF1α and angiogenesis in the avian oviduct, this study examined the expression of HIF1α, VEGFA and its receptors, ANGPT1 and ANGPT2 and their receptor mRNA transcript and protein abundances, as well as protein localization in the oviduct of laying and non-laying hens. A pause in laying was induced by fasting for five consecutive days. On day 6 of the experiment, tissues were harvested from control hens and hens that had been fasted. Quantitative RT-PCR and western blot analyses revealed changes in the expression of the examined factors between the distinct segments of the oviduct. In laying hens, the mRNA expression of genes related to angiogenesis was highest in the infundibulum, shell gland, and vagina and lowest in the magnum. In fasted hens, partial oviductal regression was accompanied by a decrease in mass, thinner epithelium, and degenerating tubular glands. Fasting also affected gene expression in oviductal parts, with the most pronounced upregulation occurring in the isthmus and vagina. The presence of both the unmodified and modified forms of HIF1α was detected, with higher abundances of the modified form observed in fasted hens. Immunoreactivity for HIF1α and VEGFA proteins was observed in all tissues of the oviductal wall, with strong immunopositive signals for HIF1α in the muscles and for VEGFA in the luminal epithelium and blood vessels. In the oviduct of fasted hens, immunoreactivity for HIF1α and VEGFA proteins was relatively stronger than in the oviduct of control hens. The results indicated that HIF1α and other factors associated with angiogenesis might play a role in regulating oviductal vascularization in hens, under both physiological conditions and fasting-induced regression. Furthermore, our findings provide novel insights into the involvement of HIF1α and angiogenesis-related factors in the function and remodeling of the avian oviduct.</p>","PeriodicalId":20459,"journal":{"name":"Poultry Science","volume":"105 10","pages":"107404"},"PeriodicalIF":4.5,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13392608/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148536814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamics of the magnum microbiome and predicted metabolic pathways across the egg-laying cycle in commercial laying hens.","authors":"Ava Vankempen, Md Ahosanul Haque Shahid, Birendra Mishra","doi":"10.1016/j.psj.2026.107359","DOIUrl":"10.1016/j.psj.2026.107359","url":null,"abstract":"<p><p>The microbiome of a chicken's reproductive tract is essential for egg production and safety. It helps regulate the immune system, preventing the transmission of pathogens like Salmonella and Staphylococcus that can contaminate eggs and pose health risks. Older hens may experience reduced immune function, which can disrupt their microbiome and increase the likelihood of harmful bacterial growth. We hypothesize that age-related shifts in the oviduct microbiome influence egg production and safety. This study aims to identify microbial communities and predicted pathways in the magnum of laying hens across egg production phases and to detect any changes that may affect reproductive health and egg quality. In this study, magnum mucosa samples were aseptically collected from the hens at the peak production phase (37 weeks of age), the mid-decline phase (67 weeks of age), and the declined production phase (87 weeks of age). After DNA extraction, 16S rRNA gene sequencing was performed on an Illumina platform, and microbial diversity was analyzed using CLC bioinformatics tools. The microbial metabolic pathways were compared between groups. Raw data were analyzed using QIIME2, PICRUSt2, and STAMP v2. The level of significance was considered at P < 0.05. The magnum samples showed significant differences in alpha and beta diversity across ages. While all age groups displayed the same core phyla, there were significant changes in relative abundance in Brevibacillus, Lactobacillus, and Bacteroides. The relative abundance of the species Phocaeicola barnesiae, associated with increased egg production, significantly decreased with age. In addition, metabolic microbiome profiling showed differences in microbial biosynthesis of essential amino acids, such as l-methionine and l-lysine, between age groups. Predicted enzyme profiles revealed a functional shift in the magnum microbiota from predominantly aerobic metabolism in younger hens to enhanced anaerobic and fermentative pathways in middle and older hens, suggesting age-associated microbial remodeling. This study revealed key differences in microbial community diversity and their predicted metabolic and enzymatic pathways in the magnum across varying age and egg production levels, providing insight into age-associated functional shifts that may inform strategies to optimize reproductive health and sustained productivity in laying hens.</p>","PeriodicalId":20459,"journal":{"name":"Poultry Science","volume":"105 10","pages":"107359"},"PeriodicalIF":4.5,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13427422/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148579958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"GSK3β inhibits the differentiation of follicular granulosa cells by promoting lipid accumulation through autophagy in chickens.","authors":"Yuechen Liao, Ashi Li, Yangqiwen Luo, Cangning Zhang, Meng Ma, Genxi Zhang, Liumei Sun, Jiying Liu, Manman Shen, Liang Qu","doi":"10.1016/j.psj.2026.107399","DOIUrl":"10.1016/j.psj.2026.107399","url":null,"abstract":"<p><p>Granulosa cells (GCs) are integral to the process of follicular development in poultry, with their differentiation and hormone synthesis being critical for follicle selection. While glycogen synthase kinase 3 beta (GSK3β) is recognized as a significant regulator of energy metabolism, differentiation, and autophagy, its specific function within GCs remains unclear. Elucidating the role of GSK3β in GCs is essential for deciphering the mechanisms governing follicle selection. Our in vitro studies in GCs from prehierarchical follicles demonstrated that overexpression of GSK3β inhibited both differentiation and proliferation, while simultaneously promoting steroid hormone synthesis. Conversely, GSK3β knockdown yielded the opposite effects. Transcriptomic analyses, supplemented by further validation, revealed that overexpression of GSK3β initiated autophagy and lipid metabolism but impeded autophagic flux, as evidenced by increased LC3-II levels and elevated p62 accumulation. Furthermore, GSK3β overexpression resulted in enhanced intracellular lipid droplet accumulation. These effects, along with the observed rise in progesterone levels and reduction in FSHR levels, were attenuated by co-treatment with rapamycin (Rapa). Mechanistically, our findings suggest that the impairment of autophagic flux induced by GSK3β triggers lipid accumulation, leading to elevated mitochondrial damage and lipid peroxidation, which in turn negatively affects GC differentiation. In conclusion, GSK3β disrupts follicular GC function by initiating autophagy while blocking its flux. This disruption induces excessive lipid accumulation, ultimately inhibiting GC differentiation. This study provides novel insights into the role of GSK3β in poultry follicular development and offers a new theoretical framework for understanding the mechanisms of follicle selection.</p>","PeriodicalId":20459,"journal":{"name":"Poultry Science","volume":"105 10","pages":"107399"},"PeriodicalIF":4.5,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13427471/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148562928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Post-slaughter poultry meat preservation for sustainable food systems: Mechanisms, microbial safety, shelf-life extension, and emerging preservation strategies.","authors":"Rabin Raut, Zahidul Hasan Tushar, Roshik Shrestha, Md Salman Mostafa, Ayush Adhikari, Ujjwal Basnet, Farazi Abinash Rahman","doi":"10.1016/j.psj.2026.107869","DOIUrl":"10.1016/j.psj.2026.107869","url":null,"abstract":"<p><p>Post-slaughter handling plays a critical role in determining the quality, microbial safety, and shelf life of poultry meat, yet spoilage and contamination remain persistent challenges for the poultry industry, contributing to food loss and reduced sustainability across the food supply chain. This review synthesizes current knowledge on post-slaughter factors influencing poultry meat deterioration, with emphasis on microbial ecology, spoilage mechanisms, and preservation strategies that enhance food safety and support sustainable food systems. Key processing steps, including scalding, defeathering, evisceration, chilling, packaging, and transport, are identified as major contamination points, where cold-chain integrity strongly governs microbial growth and quality loss. Major spoilage organisms, including Pseudomonas spp., lactic acid bacteria, Enterobacteriaceae, Brochothrix thermosphacta, Campylobacter, and Salmonella, are discussed in relation to psychrotrophic growth, enzymatic degradation, lipid oxidation, biofilm formation, and volatile compound production. Shelf-life assessment is evaluated using integrated microbiological, chemical (TBARS, TVB-N, VOCs), and sensory indicators, each with inherent limitations, to support effective quality management and minimize product losses. Preservation strategies are categorized into conventional (refrigeration, freezing), biological (lactic acid bacteria, bacteriocins, plant extracts), and advanced systems such as modified atmosphere packaging, vacuum packaging, active and intelligent packaging, and nanotechnology-based approaches. Evidence indicates that multi-hurdle strategies combining complementary interventions provide superior shelf-life extension through synergistic effects on microbial and oxidative stability. Collectively, these preservation strategies have the potential to reduce food loss and waste, improve resource efficiency, and enhance the sustainability of poultry production and food systems while maintaining product quality and safety.</p>","PeriodicalId":20459,"journal":{"name":"Poultry Science","volume":"105 12","pages":"107869"},"PeriodicalIF":4.5,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13673034/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149114304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inter-breed diversity and temporal dynamics of the fecal microbiota in two local chicken breeds from karst regions in China.","authors":"Zhengdong Wang, Qian Xiao, Mengyuan Wang, Yong Yue, Sanqiang Du, Fuping Zhang, Xiongxiong Cui","doi":"10.1016/j.psj.2026.107865","DOIUrl":"10.1016/j.psj.2026.107865","url":null,"abstract":"<p><p>The aim of this study was to investigate the temporal dynamics and inter-breed differences of fecal microbiota in two indigenous chicken breeds from Guizhou during the early post-hatch period. Six hundred chicks, including 300 Guizhou yellow chickens (GY) and 300 Changshun green-shell egg chickens (CG), were reared under identical conditions, and fecal samples were collected at post-hatch days 1, 3, 7, 14, 30, and 45. Microbial communities were analyzed using 16S rRNA gene sequencing. Alpha diversity analysis revealed a progressive increase in microbial richness and diversity with age in both breeds, with CG peaking at day 45 and GY at day 30. Beta diversity analysis indicated breed-specific clustering, reflecting distinct temporal succession patterns. Taxonomic profiling showed Bacillota as the dominant phylum across all time points, while Enterococcus and Ligilactobacillus were the core genera, with early samples enriched in Escherichia-Shigella and Clostridium. LEfSe analysis identified age- and breed-specific microbial biomarkers, demonstrating a general trend of early dominance by Clostridia and Escherichia-Shigella, mid-stage enrichment of diverse genera including Candidatus Arthromitus and Ruminococcus, and late-stage prevalence of lactic acid bacteria such as Lactobacillus and Streptococcus. Functional prediction indicated carbohydrate and amino acid metabolism as the predominant microbial functions. Quantification of ecological processes revealed that homogeneous selection constituted the dominant mechanism, overwhelmingly governed microbiota assembly, with stochastic processes playing a minor, breed-specific role. The CG breed exhibited a pattern of rapid, directional succession, culminating in a stable and phylogenetically conserved community. This suggests that host genetic factors may exert strong and consistent deterministic selection, which could thereby facilitate the formation of specialized microbiota. In contrast, the GY breed displayed a more gradual and variable assembly process, resulting in a community with higher temporal turnover and greater phylogenetic plasticity. Overall, the findings reveal that inter-breed diversity is not merely compositional but extends to the underlying ecological rules governing community succession. Meanwhile, these findings suggest that inter-breed diversity may be shaped by host genetic factors, which in turn mold the temporal assembly and functional features of the early gut microbiota, providing insights into precision nutritional management and health optimization for local poultry breeds.</p>","PeriodicalId":20459,"journal":{"name":"Poultry Science","volume":"105 12","pages":"107865"},"PeriodicalIF":4.5,"publicationDate":"2026-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13681981/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149184043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to \"Development and evaluation of a multi-epitope subunit vaccine against Salmonella Enteritidis infection\" [Poultry Science, Volume 105, Issue 11, November 2026, Article 107636].","authors":"Yuying Zhao, Guohui Li, Yu-An Li, Quan Li, Huoying Shi","doi":"10.1016/j.psj.2026.107845","DOIUrl":"10.1016/j.psj.2026.107845","url":null,"abstract":"","PeriodicalId":20459,"journal":{"name":"Poultry Science","volume":"105 12","pages":"107845"},"PeriodicalIF":4.5,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13653464/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149081842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Valorization of shrimp waste meal through organic acid treatment: Impact on broilers performance, serum metabolites, digestibility, meat quality, and economic feasibility.","authors":"Md Aliar Rahman, Shathi Akter, Jesmin Aktar, Khan Md Shaiful Islam, Mohammad Al-Mamun, Md Abul Hashem, Rakhi Chowdhury","doi":"10.1016/j.psj.2026.107858","DOIUrl":"10.1016/j.psj.2026.107858","url":null,"abstract":"<p><p>Shrimp waste meal (SWM), is a protein rich by-product whose utilization is limited by high-chitin and ash content. Organic acid-treatment may improve its nutritive value, allowing higher inclusion in broiler diets. Therefore, present study evaluated the effects of citric- and formic acid-treated SWM on growth, digestibility, serum metabolites, meat quality, and profitability in broilers over 35-day. For trial-1, 240 Cobb-500 chicks were allocated to four groups: control, corn-soybean meal (SBM) without SWM; untreated SWM (USWM), citric acid-treated SWM (CSWM), and formic acid-treated SWM (FSWM), with 25% SBM replaced by untreated or treated SWM. For trial-2, 300 Cobb-500 chicks were assigned to five groups: FSWM0 (control) without FSWM, and FSWM25, FSWM50, FSWM75, and FSWM100, where SBM was replaced with 25%, 50%, 75%, and 100% FSWM, respectively. In trial-1, body weight gain and feed conversion ratio in the FSWM group were comparable with the control, whereas USWM and CSWM resulted in poorer performance (P < 0.05). The CSWM and FSWM groups had lower abdominal fat and serum triglycerides concentrations than the control and USWM groups (P < 0.001). FSWM displayed higher dry matter, nitrogen, and chitin digestibility than USWM and CSWM (P < 0.05). Meat redness was optimum in USWM, followed by FSWM and CSWM (P < 0.05). In trial-2: performance declined in the FSWM75 and FSWM100 groups, with no variation in the control, FSWM25, and FSWM50 groups. Serum triglycerides decreased linearly with increasing FSWM inclusion (P = 0.006). Nitrogen and ash retention remained unchanged in the control, FSWM25, and FSWM50 groups but decreased in FSWM75 and FSWM100, alongside a decline (P = 0.001) in chitin digestibility. Meat redness increased in FSWM groups compared with the control (P < 0.05). The benefit-cost ratio was similar among the control, FSWM25, and FSWM50 groups but decreased in FSWM75 and FSWM100. Therefore, formic acid-treated SWM outperformed untreated and citric acid-treated SWM in broiler diets. Formic acid-treated SWM can replace 50% SBM, maintaining growth, digestibility, and profitability, while improving meat quality.</p>","PeriodicalId":20459,"journal":{"name":"Poultry Science","volume":"105 12","pages":"107858"},"PeriodicalIF":4.5,"publicationDate":"2026-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13673041/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149113765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}