دورية أكاديمية
Comparison of in situ techniques to evaluate the recovery of indigestible components and the accuracy of digestibility estimates.
| العنوان: | Comparison of in situ techniques to evaluate the recovery of indigestible components and the accuracy of digestibility estimates. |
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| المؤلفون: | Adams JM; Department of Animal Science, Texas A&M University, College Station, TX., Norris AB; Department of Animal Science, Texas A&M University, College Station, TX., Dias Batista LF; Department of Animal Science, Texas A&M University, College Station, TX., Rivera ME; Department of Animal Science, Texas A&M University, College Station, TX., Tedeschi LO; Department of Animal Science, Texas A&M University, College Station, TX. |
| المصدر: | Journal of animal science [J Anim Sci] 2020 Oct 01; Vol. 98 (10). |
| نوع المنشور: | Comparative Study; Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: American Society of Animal Science Country of Publication: United States NLM ID: 8003002 Publication Model: Print Cited Medium: Internet ISSN: 1525-3163 (Electronic) Linking ISSN: 00218812 NLM ISO Abbreviation: J Anim Sci Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Champaign, IL : American Society of Animal Science |
| مواضيع طبية MeSH: | Biomarkers/*analysis , Dietary Fiber/*analysis, Animal Feed/analysis ; Animals ; Cattle ; Diet/veterinary ; Digestion ; Feces/chemistry ; Kinetics ; Male ; Random Allocation ; Rumen/metabolism |
| مستخلص: | Indigestible components, including indigestible dry matter (iDM) and indigestible neutral detergent fiber (iNDF), play an integral role as internal markers for determining ruminal kinetics and digestibility estimations. However, the accuracy of internal markers is dependent upon the incubation technique utilized as bag type (BT) and incubation length (IL) can be significant sources of error. Previous studies have primarily focused on iDM and iNDF as digestibility markers, but few studies have compared digestibility estimates to those of acid detergent insoluble ash (ADIA). Therefore, our objective was to investigate the effect of BT (F57, F58, and Dacron) and IL (288 and 576 h) on iDM and iNDF residues, DM and NDF digestibilities, and fecal recoveries when using in situ incubations. Additionally, we evaluated the accuracy of digestibility estimates when using iDM, iNDF, and ADIA. For iDM and iNDF, feed residues demonstrated a BT × IL interaction (P < 0.01). However, fecal residues were only influenced by the main effects of BT and IL (P < 0.01), with the F58 BT and 288-h IL having the greatest residues for both iDM and iNDF. The variation in residues was greatly reduced when using iNDF compared with iDM. Fecal recovery estimates most closely approximated 100% recovery when utilizing ADIA and iDM using the F57 × 576 h incubation method (P < 0.01), although recovery was overestimated for all incubation combinations. Fecal NDF recovery estimates better represented the excretion profiles when the F57 × 576 h combination was used with iDM as the internal marker (P < 0.01). Estimates of DM and NDF digestibility were the most accurate when utilizing ADIA (P < 0.01) relative to all other treatments. Our results indicate that the proper methodological application is specific to the purpose of the inferences. When evaluating fecal recoveries and digestibility, ADIA or iDM with F57 at 576-h in situ incubation provides the greatest accuracy. (© The Author(s) 2020. Published by Oxford University Press on behalf of the American Society of Animal Science. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.) |
| References: | J Anim Sci. 2016 Jan;94(1):248-54. (PMID: 26812331) J Dairy Sci. 1992 Sep;75(9):2605-17. (PMID: 1452861) J Anim Sci. 2019 Dec 17;97(12):5016-5026. (PMID: 31630198) J Anim Sci. 2003 Dec;81(12):3233-49. (PMID: 14677881) J Dairy Sci. 2013 Aug;96(8):5295-9. (PMID: 23746591) J Dairy Sci. 2013 Mar;96(3):1715-26. (PMID: 23312997) J Dairy Sci. 1991 Oct;74(10):3583-97. (PMID: 1660498) |
| فهرسة مساهمة: | Keywords: acid detergent insoluble ash; indigestible DM; indigestible NDF; internal markers |
| المشرفين على المادة: | 0 (Biomarkers) 0 (Dietary Fiber) |
| تواريخ الأحداث: | Date Created: 20201008 Date Completed: 20201214 Latest Revision: 20210917 |
| رمز التحديث: | 20240628 |
| مُعرف محوري في PubMed: | PMC7751196 |
| DOI: | 10.1093/jas/skaa296 |
| PMID: | 33031504 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1525-3163 |
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| DOI: | 10.1093/jas/skaa296 |