Effects of stocking rate on pasture production, milk production and reproduction of supplemented crossbred Holstein–Jersey dairy cows grazing lucerne pasture

Autor:	E. A. Comeron, D. Scandolo, Nicolas Lopez-Villalobos, L.A. Romero, T. N. Barry, J. Baudracco, C. W. Holmes, M. Maciel
Rok vydání:	2011
Předmět:	geography geography.geographical_feature_category Silage Ice calving Biology Sorghum biology.organism_classification Pasture Stocking Agronomy Grazing Herd Animal Science and Zoology Dry matter
Zdroj:	Animal Feed Science and Technology. 168:131-143
ISSN:	0377-8401
Popis:	Effects of stocking rates of 1.6, 2.1 and 2.6 cows/ha on farm efficiency were evaluated using 92 crossbred Holstein–Jersey cows in a completely randomised design for 2 yr in Argentina. A 44.1 ha farm was divided into three farmlets and one spring calving herd was allocated to each. Cows grazed on lucerne based pastures (Medicago sativa L.) and were supplemented with high tannin sorghum silage (Sorghum bicolor) produced on farm plus imported concentrates (1.8 t dry matter (DM) concentrate/cow/yr in all treatments). Stocking rate (SR) had no effect on pasture production, quality, persistence or botanical composition. Efficiency of grazing (herbage consumed/herbage allowance × 1000; g/kg DM) increased with increasing SR (P
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::492bcfc780071b02eb72d556bb6d0849 https://doi.org/10.1016/j.anifeedsci.2011.03.017 Zobrazit plný text záznamu Full Text from ScienceDirect