دورية أكاديمية
Forage sources in total mixed rations early in life influence performance, metabolites, and behavior of dairy calves.
| العنوان: | Forage sources in total mixed rations early in life influence performance, metabolites, and behavior of dairy calves. |
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| المؤلفون: | Toledo AF; Department of Animal Science, 'Luiz de Queiroz' College of Agriculture (ESALQ), University of São Paulo, Piracicaba, SP 13418-260, Brazil., Dantas JG; Department of Animal Science, 'Luiz de Queiroz' College of Agriculture (ESALQ), University of São Paulo, Piracicaba, SP 13418-260, Brazil., Barboza RDF; Department of Animal Science, 'Luiz de Queiroz' College of Agriculture (ESALQ), University of São Paulo, Piracicaba, SP 13418-260, Brazil., Tomaluski CR; Department of Animal Science, 'Luiz de Queiroz' College of Agriculture (ESALQ), University of São Paulo, Piracicaba, SP 13418-260, Brazil., Oliveira ICR; Department of Animal Science, 'Luiz de Queiroz' College of Agriculture (ESALQ), University of São Paulo, Piracicaba, SP 13418-260, Brazil., Carvalho NI; Department of Animal Science, 'Luiz de Queiroz' College of Agriculture (ESALQ), University of São Paulo, Piracicaba, SP 13418-260, Brazil., Marino ED; Department of Animal Science, 'Luiz de Queiroz' College of Agriculture (ESALQ), University of São Paulo, Piracicaba, SP 13418-260, Brazil., Polizel DM; Department of Animal Production, College of Technology and Agricultural Sciences, São Paulo State University (UNESP), Ilha Solteira 15358-900, Brazil., Miller-Cushon EK; Department of Animal Sciences, University of Florida, Gainesville, FL 32611., Bittar CMM; Department of Animal Science, 'Luiz de Queiroz' College of Agriculture (ESALQ), University of São Paulo, Piracicaba, SP 13418-260, Brazil. Electronic address: carlabittar@usp.br. |
| المصدر: | Journal of dairy science [J Dairy Sci] 2024 Jun; Vol. 107 (6), pp. 3601-3613. Date of Electronic Publication: 2024 Jan 11. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: American Dairy Science Association Country of Publication: United States NLM ID: 2985126R Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1525-3198 (Electronic) Linking ISSN: 00220302 NLM ISO Abbreviation: J Dairy Sci Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: Champaign, IL : American Dairy Science Association Original Publication: Lancaster, Pa. [etc.] |
| مواضيع طبية MeSH: | Diet*/veterinary , Animal Feed*, Animals ; Cattle ; Weaning ; Silage ; Milk/chemistry ; Milk/metabolism ; Female ; Animal Nutritional Physiological Phenomena |
| مستخلص: | The objective of this study was to evaluate effects of forage inclusion and sources on performance, metabolism, and feeding behavior of dairy calves. Forty-eight Holstein calves were blocked and randomly assigned to 1 of 4 dietary treatments according to sex and BW at 28 d of life to determine the effects of feeding forage sources (ensiled and dry), with different quality on performance, metabolites, and behavior. Treatments consisted of a no-forage coarsely ground starter (CON); or total mixed ration (TMR) containing 7.5% on a dry matter (DM) basis of Tifton hay of either medium quality (MH) or low quality (LH); or 10% on a DM basis of corn silage (CS). During the first 28 d of life, all calves received 3 L of whole milk twice daily, a commercial pelleted starter and no forage, and water ad libitum. After that, the solid diet was changed to the respective dietary treatments. Calves were gradually weaned from 52 to 56 d of age, and followed for 14 d postweaning. Individual solid feed and milk intakes were recorded daily, and BW and metabolic indicators of intermediate metabolism were recorded weekly. Behavior was recorded, and the analysis was conducted on wk 7 (preweaning) and 10 (postweaning). Solid feed intake increased at wk 7 and 8 when MH, LH, and CS were included in TMR; the same results were observed postweaning. The diets did not affect the average daily gain and BW, but the feed efficiency increased with the CON diet. The β-hydroxybutyrate concentration was greater in calves receiving TMR-containing forage than CON diet. Furthermore, calves supplemented with forage had a greater rumination time. In conclusion, all forage sources included in the TMR showed feed intake and behavior benefits, reinforcing the need for fiber from forage in pre- and postweaning diets. (The Authors. Published by Elsevier Inc. on behalf of the American Dairy Science Association®. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).) |
| فهرسة مساهمة: | Keywords: effectiveness; fermented forage; particle size; total mixed ration |
| تواريخ الأحداث: | Date Created: 20240112 Date Completed: 20240522 Latest Revision: 20240522 |
| رمز التحديث: | 20240523 |
| DOI: | 10.3168/jds.2023-24138 |
| PMID: | 38216044 |
| قاعدة البيانات: | MEDLINE |
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