Changing the grazing session from morning to afternoon or including tannins in the diet was effective in decreasing the urinary nitrogen of dairy cows fed a total mixed ration and herbage
Our aim was to evaluate whether increasing soluble carbohydrates in the herbage by changing the time of the grazing session or including Acacia mearnsii tannin in the diet would affect intake, digestion, N partitioning, and productive performance of dairy cows fed a diet combining ryegrass herbage w...
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| Format: | article |
| Language: | English |
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2022
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| Online Access: | https://hdl.handle.net/20.500.12008/48184 https://doi.org/10.3168/jds.2021-21149 |
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| _version_ | 1868890113185939456 |
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| author | Pozo, Claudio A. |
| author2 | Kozloski, Gilberto Vilmar Cuffia, Maira Repetto, José Luis Cajarville, Cecilia |
| author2_role | author author author author |
| author_browse | Cajarville, Cecilia Cuffia, Maira Kozloski, Gilberto Vilmar Pozo, Claudio A. Repetto, José Luis |
| author_facet | Pozo, Claudio A. Kozloski, Gilberto Vilmar Cuffia, Maira Repetto, José Luis Cajarville, Cecilia |
| author_role | author |
| collection | COLIBRI |
| dc.contributor.none.fl_str_mv | Pozo Claudio A., Universidade Federal de Santa Maria (Santa Maria, Brasil). Departamento de Zootecnia Kozloski Gilberto Vilmar, Universidade Federal de Santa Maria (Santa Maria, Brasil). Departamento de Zootecnia Cuffia Maira, Universidad Nacional del Litoral (Esperanza, Argentina). Facultad de Ciencias Agrarias. Departamento de Producción Animal Repetto José Luis, Universidad de la República (Uruguay). Facultad de Veterinaria. Departamento de Producción Animal y Salud de Sistemas Productivos (IPAV) Cajarville Cecilia, Universidad de la República (Uruguay). Facultad de Veterinaria. Departamento de Producción Animal y Salud de Sistemas Productivos (IPAV) |
| dc.creator.none.fl_str_mv | Pozo, Claudio A. Kozloski, Gilberto Vilmar Cuffia, Maira Repetto, José Luis Cajarville, Cecilia |
| dc.date.none.fl_str_mv | 2022 2025-02-05T15:23:53Z 2025-02-05T15:23:53Z |
| dc.format.none.fl_str_mv | 17 h application/pdf |
| dc.identifier.none.fl_str_mv | Pozo, C, Kozloski, G, Cuffia, M, Repetto, J y Cajarville, C. Changing the grazing session from morning to afternoon or including tannins in the diet was effective in decreasing the urinary nitrogen of dairy cows fed a total mixed ration and herbage. Journal of Dairy Science. [en línea] 2022, 105(6), 4987-5003 https://hdl.handle.net/20.500.12008/48184 https://doi.org/10.3168/jds.2021-21149 |
| dc.language.none.fl_str_mv | en eng |
| dc.relation.none.fl_str_mv | Journal of Dairy Science, 2022, 105(6), 4987-5003 |
| dc.rights.none.fl_str_mv | info:eu-repo/semantics/openAccess Licencia Creative Commons Atribución - No Comercial - Sin Derivadas (CC - By-NC-ND 4.0) |
| dc.source.none.fl_str_mv | reponame:COLIBRI instname:Universidad de la República instacron:Universidad de la República |
| dc.subject.none.fl_str_mv | LOLIUM MULTIFLORUM PRODUCCION LECHERA NITROGENO EXCRECION TANINOS PASTOREO |
| dc.title.none.fl_str_mv | Changing the grazing session from morning to afternoon or including tannins in the diet was effective in decreasing the urinary nitrogen of dairy cows fed a total mixed ration and herbage |
| dc.type.none.fl_str_mv | Artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
| description | Our aim was to evaluate whether increasing soluble carbohydrates in the herbage by changing the time of the grazing session or including Acacia mearnsii tannin in the diet would affect intake, digestion, N partitioning, and productive performance of dairy cows fed a diet combining ryegrass herbage with partial total mixed ration (PMR). We hypothesized that both strategies could reduce the concentration of NH3-N in the rumen, reducing urinary N excretion. Nine Holstein cows were used in a triplicate 3 × 3 Latin square experiment with 3 experimental periods of 22 d. The cows were fed a fixed amount of PMR [60% of the predicted individual dry matter intake (DMI)], and an unrestricted amount of herbage in 1 grazing session of 5 h/d. The treatments were (1) morning grazing session and afternoon PMR meal (AM); (2) morning PMR meal and afternoon grazing session (PM); and (3) morning grazing session and afternoon PMR meal supplemented with 15.0 g of tannins/kg of PMR dry matter (TAN). Milk production was not affected by treatments. Although the protein concentration was lower for TAN than for PM, no differences were detected for the yield of any component between treatments. The concentration of individual or grouped fatty acids in milk fat was not affected by treatments, except for 16:1 cis-9 and Δ9-desaturase ratios 14:1/14:0 and 16:1/16:0, which were lower for TAN. Treatments did not affect total DMI, but PM tended to increase herbage DMI and reduce dry matter and crude protein digestibilities. Treatments did not affect cow eating and ruminating behavior except for the proportion of time spent eating PMR, which was higher for PM and TAN. Although no relevant effects of treatments on ruminal fermentation, purine derivatives excretion in urine, or N excretion in milk were detected, both PM and TAN decreased the total N excreted in urine by an average of 8% compared with AM. In conclusion, changing the grazing session from the morning to the afternoon and including tannins in the diet were effective in decreasing the excretion of urinary N but did not change the productive performance of dairy cows fed PMR and ryegrass herbage. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | anni_834fb390a3babd2bb3cd92f01683f1a7 |
| identifier_str_mv | Pozo, C, Kozloski, G, Cuffia, M, Repetto, J y Cajarville, C. Changing the grazing session from morning to afternoon or including tannins in the diet was effective in decreasing the urinary nitrogen of dairy cows fed a total mixed ration and herbage. Journal of Dairy Science. [en línea] 2022, 105(6), 4987-5003 |
| instacron_str | Universidad de la República |
| institution | Universidad de la República |
| instname_str | Universidad de la República |
| language | eng |
| language_invalid_str_mv | en |
| network_acronym_str | anni |
| network_name_str | oai-lr-anni |
| oai_identifier_str | oai:colibri.udelar.edu.uy:20.500.12008/48184 |
| publishDate | 2022 |
| publishDateSort | 2022 |
| reponame_str | COLIBRI |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | Licencia Creative Commons Atribución - No Comercial - Sin Derivadas (CC - By-NC-ND 4.0) |
| spelling | Changing the grazing session from morning to afternoon or including tannins in the diet was effective in decreasing the urinary nitrogen of dairy cows fed a total mixed ration and herbagePozo, Claudio A.Kozloski, Gilberto VilmarCuffia, MairaRepetto, José LuisCajarville, CeciliaLOLIUM MULTIFLORUMPRODUCCION LECHERANITROGENOEXCRECIONTANINOSPASTOREOOur aim was to evaluate whether increasing soluble carbohydrates in the herbage by changing the time of the grazing session or including Acacia mearnsii tannin in the diet would affect intake, digestion, N partitioning, and productive performance of dairy cows fed a diet combining ryegrass herbage with partial total mixed ration (PMR). We hypothesized that both strategies could reduce the concentration of NH3-N in the rumen, reducing urinary N excretion. Nine Holstein cows were used in a triplicate 3 × 3 Latin square experiment with 3 experimental periods of 22 d. The cows were fed a fixed amount of PMR [60% of the predicted individual dry matter intake (DMI)], and an unrestricted amount of herbage in 1 grazing session of 5 h/d. The treatments were (1) morning grazing session and afternoon PMR meal (AM); (2) morning PMR meal and afternoon grazing session (PM); and (3) morning grazing session and afternoon PMR meal supplemented with 15.0 g of tannins/kg of PMR dry matter (TAN). Milk production was not affected by treatments. Although the protein concentration was lower for TAN than for PM, no differences were detected for the yield of any component between treatments. The concentration of individual or grouped fatty acids in milk fat was not affected by treatments, except for 16:1 cis-9 and Δ9-desaturase ratios 14:1/14:0 and 16:1/16:0, which were lower for TAN. Treatments did not affect total DMI, but PM tended to increase herbage DMI and reduce dry matter and crude protein digestibilities. Treatments did not affect cow eating and ruminating behavior except for the proportion of time spent eating PMR, which was higher for PM and TAN. Although no relevant effects of treatments on ruminal fermentation, purine derivatives excretion in urine, or N excretion in milk were detected, both PM and TAN decreased the total N excreted in urine by an average of 8% compared with AM. In conclusion, changing the grazing session from the morning to the afternoon and including tannins in the diet were effective in decreasing the excretion of urinary N but did not change the productive performance of dairy cows fed PMR and ryegrass herbage.Pozo Claudio A., Universidade Federal de Santa Maria (Santa Maria, Brasil). Departamento de ZootecniaKozloski Gilberto Vilmar, Universidade Federal de Santa Maria (Santa Maria, Brasil). Departamento de ZootecniaCuffia Maira, Universidad Nacional del Litoral (Esperanza, Argentina). Facultad de Ciencias Agrarias. Departamento de Producción AnimalRepetto José Luis, Universidad de la República (Uruguay). Facultad de Veterinaria. Departamento de Producción Animal y Salud de Sistemas Productivos (IPAV)Cajarville Cecilia, Universidad de la República (Uruguay). Facultad de Veterinaria. Departamento de Producción Animal y Salud de Sistemas Productivos (IPAV)2025-02-05T15:23:53Z2025-02-05T15:23:53Z2022Artículoinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion17 happlication/pdfPozo, C, Kozloski, G, Cuffia, M, Repetto, J y Cajarville, C. Changing the grazing session from morning to afternoon or including tannins in the diet was effective in decreasing the urinary nitrogen of dairy cows fed a total mixed ration and herbage. Journal of Dairy Science. [en línea] 2022, 105(6), 4987-5003https://hdl.handle.net/20.500.12008/48184https://doi.org/10.3168/jds.2021-21149reponame:COLIBRIinstname:Universidad de la Repúblicainstacron:Universidad de la RepúblicaenengJournal of Dairy Science, 2022, 105(6), 4987-5003Las obras depositadas en el Repositorio se rigen por la Ordenanza de los Derechos de la Propiedad Intelectual de la Universidad de la República.(Res. Nº 91 de C.D.C. de 8/III/1994 – D.O. 7/IV/1994) y por la Ordenanza del Repositorio Abierto de la Universidad de la República (Res. Nº 16 de C.D.C. de 07/10/2014)info:eu-repo/semantics/openAccessLicencia Creative Commons Atribución - No Comercial - Sin Derivadas (CC - By-NC-ND 4.0)oai:colibri.udelar.edu.uy:20.500.12008/481842026-04-14T10:35:04Z |
| spellingShingle | Changing the grazing session from morning to afternoon or including tannins in the diet was effective in decreasing the urinary nitrogen of dairy cows fed a total mixed ration and herbage Pozo, Claudio A. LOLIUM MULTIFLORUM PRODUCCION LECHERA NITROGENO EXCRECION TANINOS PASTOREO |
| status_str | publishedVersion |
| title | Changing the grazing session from morning to afternoon or including tannins in the diet was effective in decreasing the urinary nitrogen of dairy cows fed a total mixed ration and herbage |
| title_full | Changing the grazing session from morning to afternoon or including tannins in the diet was effective in decreasing the urinary nitrogen of dairy cows fed a total mixed ration and herbage |
| title_fullStr | Changing the grazing session from morning to afternoon or including tannins in the diet was effective in decreasing the urinary nitrogen of dairy cows fed a total mixed ration and herbage |
| title_full_unstemmed | Changing the grazing session from morning to afternoon or including tannins in the diet was effective in decreasing the urinary nitrogen of dairy cows fed a total mixed ration and herbage |
| title_short | Changing the grazing session from morning to afternoon or including tannins in the diet was effective in decreasing the urinary nitrogen of dairy cows fed a total mixed ration and herbage |
| title_sort | Changing the grazing session from morning to afternoon or including tannins in the diet was effective in decreasing the urinary nitrogen of dairy cows fed a total mixed ration and herbage |
| topic | LOLIUM MULTIFLORUM PRODUCCION LECHERA NITROGENO EXCRECION TANINOS PASTOREO |
| url | https://hdl.handle.net/20.500.12008/48184 https://doi.org/10.3168/jds.2021-21149 |