Journal of Applied Poultry Research最新文献

{"title":"Circadian rhythm of locomotor activity and body temperature in free-range laying hens as measured by triaxial accelerometers and subcutaneous biologgers","authors":"José A. Abecia ,&nbsp;Francisco Canto ,&nbsp;Javier Plaza ,&nbsp;Jaime Nieto ,&nbsp;Carlos Palacios","doi":"10.1016/j.japr.2025.100607","DOIUrl":"10.1016/j.japr.2025.100607","url":null,"abstract":"<div><div>Biosensors are essential tools for monitoring temperature in poultry because they provide real-time data that can enhance animal welfare and productivity. The aim of this study was to evaluate the use of triaxial accelerometers and subcutaneous biologgers to monitor of locomotor activity (LA) and body temperature (BT) in free-range laying hens, to explore their potential for assessing circadian patterns relevant to welfare monitoring. Five hens were fitted with a harness that carried an accelerometer to record LA for 6 d. In addition, hens received a surgically implanted biologger to record BT every 15 min. Animals were housed indoors that had an artificial photoperiod (16L:8D) and an adjacent outdoor pen. Hen BT decreased between 1900 h and 2300 h, and was lowest 30 min before lights turned off at 2330 h. From that moment, BT increased throughout the night and until 0900 h in the morning; after which, it remained stable until the evening. Animals remained practically motionless during darkness, and began moving immediately after lights turned on. BT and LA exhibited a 24-h circadian rhythm. There was a significant correlation between BT and LA (P &lt; 0.01), but BT was not correlated with ambient T. LA was correlated with indoor and outdoor ambient T (P &lt; 0.01). In conclusion, free-range laying hens exhibited clear circadian rhythms in LA and BT, which were synchronized with the light-dark cycle. Ambient T influenced LA, which was correlated with BT. Those findings can contribute to the optimization of management practices that are intended to maximize welfare and productivity.</div></div>","PeriodicalId":15240,"journal":{"name":"Journal of Applied Poultry Research","volume":"34 4","pages":"Article 100607"},"PeriodicalIF":2.0,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145219126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of dietary turmeric and ginger powder on performance, serum chemistry and gut microbiota in laying hens","authors":"Z. Li ,&nbsp;M. Qumar ,&nbsp;M. Irfan ,&nbsp;M.T. Khan ,&nbsp;G. Faran ,&nbsp;G. Abbas ,&nbsp;K. Prince ,&nbsp;G.A. Dilbar ,&nbsp;M.A. Gondal ,&nbsp;M. Rauf ,&nbsp;I. Ahmed ,&nbsp;M. Ilyas ,&nbsp;A. Hussain ,&nbsp;H. Yuan ,&nbsp;Dalia Fouad","doi":"10.1016/j.japr.2025.100605","DOIUrl":"10.1016/j.japr.2025.100605","url":null,"abstract":"<div><div>This study investigated the effects of dietary supplementation with turmeric and ginger on the performance of laying hens. A total of 160 commercial Hi-Sex White caged laying hens were randomly assigned to four dietary treatments, each consisting of five replicates of eight birds, using a completely randomized design (CRD). Group T₁ served as the control and received only the basal diet, while groups T₂, T₃, and T₄ were supplemented with 1.0 % turmeric + 0.5 % ginger, 0.5 % turmeric + 1.0 % ginger, and 0.75 % turmeric + 0.75 % ginger, respectively. The experiment lasted for 10 weeks, from 45 to 54 weeks of age. The results demonstrated that the T₄ group (0.75 % turmeric + 0.75 % ginger) exhibited reduced feed intake, enhanced egg production, and an improved feed conversion ratio compared to the other groups (<em>P</em> <em>&lt;</em> 0.0001). All supplemented groups produced significantly heavier eggs than the control (<em>P</em> <em>&lt;</em> 0.0001). Hematological analysis revealed elevated red blood cell counts (<em>P</em> <em>=</em> 0.001) and hemoglobin levels (<em>P</em> <em>=</em> 0.037) in the T₄ group, along with increased white blood cell counts in the T₂, T₃, and T₄ groups (<em>P</em> <em>=</em> 0.003). Biochemical analysis indicated a significant reduction in blood urea nitrogen across all supplemented groups (<em>P</em> <em>=</em> 0.001), with a marked decrease in total cholesterol observed only in the T₄ group (<em>P</em> <em>=</em> 0.001). Although the <em>Escherichia coli</em> count in the T₄ group was slightly higher (<em>P</em> <em>=</em> 0.001) than in the T₂ and T₃ groups, this did not negatively affect the birds’ health or performance. Overall, the T₄ diet supported superior productivity, favorable physiological responses, and an improved serum lipid profile. These findings suggest that a balanced dietary inclusion of turmeric and ginger at 0.75 % each may be an effective strategy to enhance the performance and health of laying hens.</div></div>","PeriodicalId":15240,"journal":{"name":"Journal of Applied Poultry Research","volume":"34 4","pages":"Article 100605"},"PeriodicalIF":2.0,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145219128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance and carcass characteristics of Barred Plymouth Rock chickens in comparison to broilers","authors":"B.A. McCrea","doi":"10.1016/j.japr.2025.100601","DOIUrl":"10.1016/j.japr.2025.100601","url":null,"abstract":"<div><div>The popularity of keeping small flocks of chickens has brought with it an interest in the production characteristics of heritage breeds of chicken. The definition of heritage chicken breed is one that physically conforms to the standards of the American Poultry Association; mates naturally; has a long, productive outdoor lifespan; and a slow growth rate. Production information on raising meat Barred Plymouth Rocks is lacking since research focuses have been on diet formulation and genetics for broiler production. This study was undertaken to determine the production efficiency of Barred Plymouth Rocks as compared to broilers in body weight, feed intake, FCR, mortality, footpad lesion scores, carcass dressing percentage, skin color, parts, organ weights, and both bone length and width.</div><div>There were significant differences in body weight between broilers and Barred Plymouth Rocks throughout the study. Barred Plymouth Rocks took 17 weeks to reach a live body weight that was 17.35 % smaller than that of the broilers at six weeks. The Barred Plymouth Rocks required more than twice as much feed to reach nearly the same body weight as that of the broiler. There was a significant difference between the two breeds with regard to FCR; the broilers being the more efficient breed. The Barred Plymouth Rock had a significantly lower carcass dressing percentage of just under 65 % as compared to just over 68 % in broilers. The Barred Plymouth Rocks were less efficient at developing muscle on the carcass and more efficient at building bones and internal organs, had lower mortality, yellower skin on the breast area, and lower footpad lesions scores. This information will aid producers of niche market heritage chickens in their decision-making when considering this breed for meat production.</div></div>","PeriodicalId":15240,"journal":{"name":"Journal of Applied Poultry Research","volume":"34 4","pages":"Article 100601"},"PeriodicalIF":2.0,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145099449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of different DNA extraction methods for the detection of Clostridium perfringens by loop-mediated isothermal amplification (LAMP) assay","authors":"Deepa Chaudhary ,&nbsp;Sabin Poudel ,&nbsp;Chuan-Yu Hsu ,&nbsp;Linan Jia ,&nbsp;Anuraj T. Sukumaran ,&nbsp;Xue Zhang ,&nbsp;Wen-Hsing Cheng ,&nbsp;Aaron S. Kiess ,&nbsp;Kenneth S. Macklin ,&nbsp;Li Zhang","doi":"10.1016/j.japr.2025.100600","DOIUrl":"10.1016/j.japr.2025.100600","url":null,"abstract":"<div><div><em>Clostridium perfringens</em> (<strong>C. perfringens</strong>) is a gram-positive bacterium that causes necrotic enteritis in poultry, resulting in significant economic losses. The development of a reliable and cost-effective diagnostic assay is crucial to prevent the spread of this bacterium. The loop-mediated isothermal amplification (LAMP) assay has emerged as a promising tool for in-field detection of <em>C. perfringens</em>. However, for effective implementation in low-resource settings, a simplified, low-cost DNA extraction method that minimizes equipment needs is crucial. This study aimed to identify an optimal DNA extraction method for the LAMP assay targeting <em>C. perfringens</em> detection. We evaluated four DNA extraction methods, Spin-column (<strong>SC</strong>), Magnetic Beads (<strong>MB</strong>), Dipstick (<strong>DS</strong>), and Hotshot (<strong>HS</strong>), based on DNA yield, purity, quality, and their compatibility with LAMP and PCR assays. The effectiveness of these methods was tested using spiked broiler feces with reference <em>C. perfringens</em>. Our findings indicated that SC and MB methods yielded DNA of higher purity and quality. Specifically, the SC method demonstrated superior performance in both LAMP and PCR assays across all tested <em>C. perfringens</em> strains. While the HS method was not the top performer, it proved to be the most practical for DNA extraction in resource-limited environments. Sensitivity tests for the LAMP assay showed the highest detection capability with SC-extracted DNA, while DS and HS methods exhibited lower sensitivity. In summary, this study provides valuable information for establishing a practical and adaptable diagnostic approach for <em>C. perfringens</em> detection in low-resource settings, with the HS-DNA extraction method as a feasible option for on-site LAMP assays.</div></div>","PeriodicalId":15240,"journal":{"name":"Journal of Applied Poultry Research","volume":"34 4","pages":"Article 100600"},"PeriodicalIF":2.0,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145044518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development and testing of an indoor air scrubber for removing ammonia from air within poultry houses","authors":"Philip A. Moore Jr. ,&nbsp;Kelsey Anderson ,&nbsp;Jerry Martin ,&nbsp;Hong Li ,&nbsp;Joseph L. Purswell","doi":"10.1016/j.japr.2025.100599","DOIUrl":"10.1016/j.japr.2025.100599","url":null,"abstract":"<div><div>High levels of ammonia (NH₃) in poultry houses negatively affect bird BW, FCR, and disease resistance, and negatively affect the health of agricultural workers. The objectives of this research were to build and test the efficacy of a newly developed indoor air scrubber on reducing NH₃ concentrations. A full-scale prototype was constructed, and a series of experiments were conducted in a shop under various conditions using sulfuric acid for capturing NH₃. Dilute sulfuric acid (1%) was sprayed through 21 nozzles placed in six rows at multiple heights and orientations. Scrubbing efficiency was tested for two h at five NH₃ concentrations (10, 25, 50, 75 and 100 ppm) and two air flow rates (7,372 and 9,334 m³ h^-1) with three replications of each of the ten scenarios. The efficiency of the scrubber decreased with increases in air flow rate and NH₃ concentration. At the lower air flow rate the percent NH₃ reduction was 99, 98, 96, 94, and 93% when inflow concentrations were 10, 25, 50, 75, and 100 ppm NH₃, respectively, with corresponding outflow concentrations of 0.1, 0.7, 2.2, 4.2, and 7.3 ppm NH₃. At the higher flow rate, the percent reduction was 90, 91, 88, 87 and 87% at 10, 25, 50, 75 and 100 ppm NH₃, respectively, with corresponding outflow concentrations of 1.1, 2.4, 6.1, 9.9, and 13.1 ppm. When inflow NH₃ levels were relatively high (&gt;50 ppm), the scrubber captured over 100 g N hr^-1. This technology would result in much lower NH₃ concentrations in poultry houses, which would improve poultry production and worker health, and capture valuable nitrogen fertilizer, while reducing air and water pollution</div></div>","PeriodicalId":15240,"journal":{"name":"Journal of Applied Poultry Research","volume":"34 4","pages":"Article 100599"},"PeriodicalIF":2.0,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145044517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Throughput agents alleviate concerns about pelleting broiler feed with low-moisture corn and large pellet die thicknesses","authors":"L.E. Knarr ,&nbsp;K.M. Bowen ,&nbsp;E.A. Lynch ,&nbsp;E.B. Estanich ,&nbsp;A.K. Renner ,&nbsp;R.O. Adejumo ,&nbsp;J. Ferrel ,&nbsp;J.S. Moritz","doi":"10.1016/j.japr.2025.100598","DOIUrl":"10.1016/j.japr.2025.100598","url":null,"abstract":"<div><div>Low-moisture corn, due to late harvesting and/or improper handling and storage, may negatively impact the pellet production rate (PPR) and pellet durability index (PDI). This is likely due to less lubrication and particle agglomeration associated with the lower moisture content. Recently, Azomite® (AZM) was tested in combination with 32-, 38-, and 45 mm pellet die thicknesses (PDT), which showed that incorporating 0.25 % AZM increased PPR and largely maintained PDI relative to the 0.0 % AZM control within each PDT. Additionally, past research has shown that the inclusion of mixer-added water (MAW) at levels of 1.50 to 3.00 % can increase PPR and PDI. Therefore, the objective of this experiment was to determine the influence of PDT, AZM, and MAW on PPR, PDI tested for 30 sec (PDI-30), PDI tested for 60 sec (PDI-60), and hot pellet temperature (HPT) of a broiler grower diet manufactured with low-moisture corn. Modifying PDT had a similar effect on PPR and PDI relative to previously published literature, where increasing PDT resulted in decreased PPR and increased PDI. Additionally, the incorporation of 0.25 % AZM and 1.50 % MAW returned similar increases in PPR; however, these effects were not additive. It could, therefore, be concluded that AZM and MAW are effective feed additives to increase feed manufacturing efficiency and/or feed quality. However, the anecdotal incidents of plugs and slips at the pellet die associated with the 1.5 % MAW inclusion should be considered, as these may cause an overall decrease in high-quality feed production.</div></div>","PeriodicalId":15240,"journal":{"name":"Journal of Applied Poultry Research","volume":"34 4","pages":"Article 100598"},"PeriodicalIF":2.0,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145099448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of acidified clay and sodium bisulfate on litter ammonia, pH, total aerobic plate counts and broiler footpad dermatitis","authors":"J.B. Payne ,&nbsp;D.M. Miles ,&nbsp;K.L. Moncada ,&nbsp;K. Gardner","doi":"10.1016/j.japr.2025.100597","DOIUrl":"10.1016/j.japr.2025.100597","url":null,"abstract":"<div><div>Acidified clay and sodium bisulfate are common litter amendments utilized to control ammonia and lower pH in poultry litter. Three separate pen trials were conducted to compare the efficacy of both amendments for controlling litter ammonia, pH, total aerobic plate counts (APC), and improving footpad lesions in commercial broilers. A commercial broiler research farm was chosen as the test site. Day-old broiler chicks were placed in 40 pens (60 per pen for a total of 2400 birds) on used pine shavings. Pens were blocked within the house. Prior to placement pens were de-caked and top dressed as necessary. Treatments consisted of (1) control; (2) acidified clay and (3) sodium bisulfate. Composite litter surface samples were collected from each pen and analyzed for pH and APC on days 0-5. Litter surface ammonia concentrations were measured on days 0-5. Ammonia flux measurements were recorded on days 3 and 6. Broiler footpad lesion scores were assessed on day 38. Ammonia, pH, total APC and ammonia flux values were significantly lower in treated litter compared to values in the control. Ammonia concentrations in the acidified clay group were significantly lower than values in the sodium bisulfate group. On day 1, pH and total APC values in the acidified clay treated litter were lower than values in the sodium bisulfate treated litter. Average footpad lesion scores within a pen were significantly higher in the control group as compared to the acidified clay and sodium bisulfate groups. Additionally, average footpad lesion scores were significantly higher in the sodium bisulfate group as compared to the acidified clay group. Both litter amendments proved effective for controlling ammonia, pH, total APC and improving footpad dermatitis, supporting greater broiler rearing efficiency, productivity, and marketable broiler paws.</div></div>","PeriodicalId":15240,"journal":{"name":"Journal of Applied Poultry Research","volume":"34 4","pages":"Article 100597"},"PeriodicalIF":2.0,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145044516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advances in poultry nutrition book review edited by Todd J. Applegate","authors":"V.E. Ayres","doi":"10.1016/j.japr.2025.100595","DOIUrl":"10.1016/j.japr.2025.100595","url":null,"abstract":"","PeriodicalId":15240,"journal":{"name":"Journal of Applied Poultry Research","volume":"34 4","pages":"Article 100595"},"PeriodicalIF":2.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145219127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessing soybean processing add-backs in soybean meal via a dietary broiler performance test","authors":"S.C. Wells ,&nbsp;K.N. Gaffield ,&nbsp;R.D. Goodband ,&nbsp;C.A. Umberson ,&nbsp;E.S. Greene ,&nbsp;K.B. Nelson ,&nbsp;M.T. Kidd","doi":"10.1016/j.japr.2025.100596","DOIUrl":"10.1016/j.japr.2025.100596","url":null,"abstract":"<div><div>This experiment assessed the feeding value of soybean meal with the inclusion of soybean crush plant “add-backs” ingredients (i.e. gums and soapstocks) in Cobb MX x 500 male broilers from 0 to 45 d of age. Five corn and soy-based diets were formulated with soybean meal containing various levels of soybean gums and soapstocks inclusions or the addition of an inert filler. Diet 1 contained soybean meal with no add-backs whereas diets 2 through 5 contained either 4 % gums, 4 % soapstocks, 2 % gums and 2 % soapstocks, or 4 % inert filler, respectively. Diets were fed to 1,200 male broilers across 10 replicate treatment pens of 24 birds in a randomized complete block design. Birds were weighed at d 0, 14, 28, and 45 and live performance was assessed from the 0 to 45 d period. After each weigh period, one bird per pen was selected for body composition analysis using dual x-ray absorptiometry. Additionally at d 45, one bird per pen was selected for assessment of gut integrity. Six birds per pen were evaluated for carcass characteristics at d 45. Diet 1 had significantly higher FCR from 0 to 45 d than treatments 2 through 5. No significant responses were observed for most live performance measurements, carcass yields, gut integrity, or woody breast measurements. In conclusion, soybean gums and soapstocks added back to soybean meal can be fed to broilers without loss in performance.</div></div>","PeriodicalId":15240,"journal":{"name":"Journal of Applied Poultry Research","volume":"34 4","pages":"Article 100596"},"PeriodicalIF":2.0,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145026300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating phytase activity and amino acid density as suitable on-farm nutrient segregation markers: Effects on broiler performance, processing yields, and bone mineralization","authors":"B.S. Liebross,&nbsp;D.R. Boontarue,&nbsp;C.M. Poholsky,&nbsp;J.W. Boney","doi":"10.1016/j.japr.2025.100594","DOIUrl":"10.1016/j.japr.2025.100594","url":null,"abstract":"<div><div>Pellet quality and feed line length influence the nutrient density in feed pans throughout poultry houses. Reported variability in amino acid density (AAD) and phytase activity (PhyAct) along feed lines prompted this investigation. The objectives were to determine the impact of nutrient segregation, as measured in a controlled field trial, on broiler performance, processing yields, and bone mineralization in a replicated pen trial. Dietary treatments were arranged in a 2 × 3 factorial in a randomized complete block design. Ross 308 male broilers were provided diets varying in AAD (95 % and 105 % of recommendation) and PhyAct (250, 500, 750 FTU/kg) from d11-38. Experimental diets were given full nutrient release credit for phytase at 500 FTU/kg; however, the phytase was withheld at the mill. Liquid phytase was later mixed into diets to create the PhyAct levels. Broiler performance and bone mineralization were measured from d11-38 while processing yields were determined on d39. The main effects of AAD and PhyAct did not interact (<em>P</em> &gt; 0.05). However, broilers fed excess AAD improved d38 BW by 121 g, overall FCR by 0.077, and breast yield by 1.056 % compared to those fed reduced AAD (<em>P</em> &lt; 0.05). Conversely, the main effect of PhyAct did not affect measured parameters (<em>P</em> &gt; 0.05). While variability in both AAD and PhyAct can be identified in the field, these data demonstrated that AAD is a suitable marker for nutrient segregation that impacts performance. The lack of broiler performance differences makes PhyAct (500 FTU/kg dose) a poor nutrient segregation marker.</div></div>","PeriodicalId":15240,"journal":{"name":"Journal of Applied Poultry Research","volume":"34 4","pages":"Article 100594"},"PeriodicalIF":2.0,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145099447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}