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Concentrate supplementation on milk yield, methane and CO2 production in crossbred dairy cows grazing in tropical climate regions
Robles Jimenez, Lizbeth Esmeralda; Hernandez Arni, Xochitemol; Benaouda, Mohammed; Osorio Avalos, Jorge; Corona, Luis; Castillo-Gallegos, Epigmenio; Castelán Ortega, Octavio Alonso; Gonzalez-Ronquillo, Manuel.
Afiliação
  • Robles Jimenez, Lizbeth Esmeralda; Facultad de Medicina Veterinaria y Zootecnia. Programa de Maestría y Doctorado en Ciencias Agropecuarias y Recursos Naturales. Toluca. México
  • Hernandez Arni, Xochitemol; Universidad Nacional Autónomade México. Facultad de Medicina Veterinaria y Zootecnia. Programa de Maestría y Doctorado en Ciencias de la Salud y la Producción Animal. Ciudad de México. México
  • Benaouda, Mohammed; Universidad Autónoma del Estado de México. Facultad de Medicina Veterinaria y Zootecnia. Departamento de Nutrición Animal. Toluca. México
  • Osorio Avalos, Jorge; Facultad de Medicina Veterinaria y Zootecnia. Programa de Maestría y Doctorado en Ciencias Agropecuarias y Recursos Naturales. Toluca. México
  • Corona, Luis; Universidad Nacional Autónoma de México. Facultad de Medicina Veterinaria y Zootecnia. Ciudad de México. México
  • Castillo-Gallegos, Epigmenio; Universidad Nacional Autónoma de México. Facultad de Medicina Veterinaria y Zootecnia. Ciudad de México. México
  • Castelán Ortega, Octavio Alonso; Facultad de Medicina Veterinaria y Zootecnia. Programa de Maestría y Doctorado en Ciencias Agropecuarias y Recursos Naturales. Toluca. México
  • Gonzalez-Ronquillo, Manuel; Facultad de Medicina Veterinaria y Zootecnia. Ciencias Agropecuarias y Recursos Naturales. Toluca. México
J. Anim. Behav. Biometeorol. ; 09(02): 1-8, Apr. 2021. tab
Article em En | VETINDEX | ID: vti-32435
Biblioteca responsável: BR68.1
Localização: BR68.1
ABSTRACT
The objective of this study was to evaluate the level of concentrate supplementation on the production and chemical composition of milk from 12 crossbred F1 dual-purpose cowsBos taurus ½ Bos indicus) and estimate the emission of CH4, N2O, and CO2 gases. The study included 12 crossbred F1 dual-purpose cows over 60 days of lactation. The cows grazed on 28% tropical native grassland and 72% Brachiaria spp. and Cynodon neumfluensis, supplemented with 0, 150, 300, and 450g of concentrate per kg daily milk production, during three experimental periods of 15 days each in a crossover design. Pasture and concentrate samples were collected and were analyzed for dry matter, crude protein, neutral detergent fiber, and acid detergent fiber. Milk production (kg d-1) was recorded daily, nitrous oxide (N2O), and emissions from excreta and daily CH4 production were calculated. Results were analyzed with the SAS MIXED procedure. Concentrate supplementation in tropical crossbred dairy cows did not improve milk yield but increased CH4 and N2O production (P < 0.0001) per cow as the concentrate increased in the diet; the Ym factor from the tropical region yielded less CH4 than the IPCC Ym model (P < 0.0001). In conclusion, the calculation of CH4 using specific emission factors for the tropical climate region is better than the IPCC default emission factors in order not to overestimate the CH4 emissions.(AU)
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Texto completo: 1 Base de dados: VETINDEX Idioma: En Revista: J. Anim. Behav. Biometeorol / J. Anim. Behav. Biometeorol. Ano de publicação: 2021 Tipo de documento: Article

Texto completo: 1 Base de dados: VETINDEX Idioma: En Revista: J. Anim. Behav. Biometeorol / J. Anim. Behav. Biometeorol. Ano de publicação: 2021 Tipo de documento: Article