{"title":"Understanding how high pellet-to-fine ratio feed impacts on-farm nutrient segregation over time","authors":"C.M. Poholsky, J.W. Boney","doi":"10.1016/j.japr.2023.100398","DOIUrl":null,"url":null,"abstract":"<div><p>On-farm nutrient segregation is influenced by manufacturing techniques, pellet-to-fine ratio (<strong>P:F</strong>), and feed line length. Additional research to understand nutrient segregation over time is warranted. Therefore, a study was conducted to determine how feed and nutrients travel throughout a commercial poultry house over a 5-d period. High P:F feed (85:15) was fed to commercial turkeys as part of a standard grow-out. Two experiments were conducted concurrently, differing in feed sample collection techniques. Samples were collected from 5 feed pan locations (<strong>FPL</strong>), designated at every 15 m of the 75 m feed lines. In experiment 1, residual feed was collected for analysis. In experiment 2, different feed pans were emptied of residual feed and then filled before collection. Measured variables included P:F, near-infrared spectrophotometer (<strong>NIRS</strong>) predicted nutrients, gross energy, phytase activity, amino acids (<strong>AA</strong>), and mineral concentrations. Data were analyzed in a repeated measure ANOVA using PROC MIXED in SAS. In experiment 1, residual feed consisted mostly of fines (∼73%), and nutrient composition of the feed was similar on each day (<em>P</em> > 0.05). In experiment 2, P:F and Cu concentration varied day by day (<em>P</em> < 0.001), owing to feed flow dynamics in the feed bin. Only proline varied by FPL (<em>P</em> = 0.050). Neither day of sample collection nor FPL affected crude protein, crude fiber, ash, gross energy, and phytase activity of the feed (<em>P</em> > 0.05). Overall, these data support augering high P:F feed through short feed lines for an even distribution of nutrients throughout the house.</p></div>","PeriodicalId":15240,"journal":{"name":"Journal of Applied Poultry Research","volume":"33 2","pages":"Article 100398"},"PeriodicalIF":1.6000,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1056617123000703/pdfft?md5=574073689d9f79d971deab07c6b61e29&pid=1-s2.0-S1056617123000703-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Applied Poultry Research","FirstCategoryId":"97","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1056617123000703","RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"AGRICULTURE, DAIRY & ANIMAL SCIENCE","Score":null,"Total":0}
引用次数: 0
Abstract
On-farm nutrient segregation is influenced by manufacturing techniques, pellet-to-fine ratio (P:F), and feed line length. Additional research to understand nutrient segregation over time is warranted. Therefore, a study was conducted to determine how feed and nutrients travel throughout a commercial poultry house over a 5-d period. High P:F feed (85:15) was fed to commercial turkeys as part of a standard grow-out. Two experiments were conducted concurrently, differing in feed sample collection techniques. Samples were collected from 5 feed pan locations (FPL), designated at every 15 m of the 75 m feed lines. In experiment 1, residual feed was collected for analysis. In experiment 2, different feed pans were emptied of residual feed and then filled before collection. Measured variables included P:F, near-infrared spectrophotometer (NIRS) predicted nutrients, gross energy, phytase activity, amino acids (AA), and mineral concentrations. Data were analyzed in a repeated measure ANOVA using PROC MIXED in SAS. In experiment 1, residual feed consisted mostly of fines (∼73%), and nutrient composition of the feed was similar on each day (P > 0.05). In experiment 2, P:F and Cu concentration varied day by day (P < 0.001), owing to feed flow dynamics in the feed bin. Only proline varied by FPL (P = 0.050). Neither day of sample collection nor FPL affected crude protein, crude fiber, ash, gross energy, and phytase activity of the feed (P > 0.05). Overall, these data support augering high P:F feed through short feed lines for an even distribution of nutrients throughout the house.
期刊介绍：
The Journal of Applied Poultry Research (JAPR) publishes original research reports, field reports, and reviews on breeding, hatching, health and disease, layer management, meat bird processing and products, meat bird management, microbiology, food safety, nutrition, environment, sanitation, welfare, and economics. As of January 2020, JAPR will become an Open Access journal with no subscription charges, meaning authors who publish here can make their research immediately, permanently, and freely accessible worldwide while retaining copyright to their work. Papers submitted for publication after October 1, 2019 will be published as Open Access papers.
The readers of JAPR are in education, extension, industry, and government, including research, teaching, administration, veterinary medicine, management, production, quality assurance, product development, and technical services. Nutritionists, breeder flock supervisors, production managers, microbiologists, laboratory personnel, food safety and sanitation managers, poultry processing managers, feed manufacturers, and egg producers use JAPR to keep up with current applied poultry research.
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