Changes in the milk response to different herbage mass of dairy cattle in a tropical climate

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Autor:Calvache, Iván; Beltran, Ignacio; Balocchi, Oscar; Venegas, Luz A.; Navas, Alexander

Institución:Instituto de Investigaciones Agropecuarias

Jefe proyecto: Beltrán G., Ignacio

Nombre proyecto: Orujo de uva como bioinsumo para alimentación de ganado bovino de carne: Una estrategia de adaptación y mitigación al cambio climático

Código proyecto: 503538-11

Serie Documental: Chilean Journal of Agricultural Research

N° Documento: v. 84(2) p. 225-235

The interaction between pasture and supplementation in dairy production systems constitutes a very important part of the efficiency of dairy. This study evaluated the effect of the herbage mass (HM) on the milk production and solid concentration. Twenty Holstein cows were distributed into two groups, 10 assigned 2200 kg DM ha-1 (low herbage mass, LHM) and 10 with 2800 kg DM ha-1 (medium herbage mass, MHM). Herbage mass was measured above 5 cm. The experiment lasted 8 wk. The variables evaluated were DM intake (DMI), milk production and composition (fat and protein concentration). Effects of treatments on variables were evaluated using a repeated measure analysis over time. The results showed nonsignificant differences in the pasture DMI between LHM and MHM for weeks 1, 2, 3 and 5 (P > 0.05). During week 4, pasture DMI was 3 kg greater for LHM than MHM (P < 0.05). The milk production did not differ between treatments per week, but the average was 2.4 kg greater for LHM compared to MHM (P < 0.05). In conclusion, changes in the pasture availability increased milk production at LHM, but not enough to cause changes in solids concentration. This clearly shows that, LHM can increase milk and solids production.

Enlace persistente:https://hdl.handle.net/20.500.14001/69254

Objetivos de desarrollo sostenible

N°2: Poner fin al hambre, lograr la seguridad alimentaria y la mejora de la nutrición y promover la agricultura sostenible

Citar esta publicación:
Calvache, Iván, Beltran, Ignacio, Balocchi, Oscar, Venegas, Luz A. y Navas, Alexander (2024-04) Changes in the milk response to different herbage mass of dairy cattle in a tropical climate [en línea]. Chillán, Chile: Instituto de Investigaciones Agropecuarias. Chilean Journal of Agricultural Research. v. 84(2) p. 225-235. Disponible en: https://hdl.handle.net/20.500.14001/69254 (Consultado: ).