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	Provedor de dados Chilean J. Agric. Res. (1) Scientia Agricola (1) Autor Keim,Juan Pablo (2) Alomar,Daniel (1) Anrique,René (1) López,Ignacio Fernando (1) Valderrama,Ximena (1) Palavra-chave Concentrate supplementation (1) Crude protein (1) High sugar ryegrass (1) Milk production (1) Ruminal synchrony (1) Tipo do documento Info:eu-repo/semantics/article (1) Journal article (1) Ano 2013 (1) 2011 (1) País Brazil (1) Chile (1) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Nutritional Strategies to Improve Nitrogen use Efficiency by Grazing Dairy Cows Chilean J. Agric. Res. Keim,Juan Pablo; Anrique,René. Grazing dairy cows are characterized by converting a low proportion of dietary N into milk N. This low N use efficiency (NUE) is mainly due to an excessive supply of crude protein (CP) of pasture with regard to animal requirements. Excess N in the diet has negative effects for the animal; it alters the organoleptic characteristics of milk and pollutes the environment through N excretions. The aim of this review was to analyze the available information on nutritional strategies to improve NUE by grazing dairy cows, such as diluting the dietary N through supplementation, synchronizing ruminal carbohydrate (CHO), and N fermentation rates, and using pastures with a high water soluble carbohydrates (WSC) content. There is a beneficial effect of carbohydrate... Tipo: Journal article Palavras-chave: Concentrate supplementation; Ruminal synchrony; High sugar ryegrass; Crude protein; Milk production. Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000400019 In situ rumen degradation kinetics as affected by type of pasture and date of harvest Scientia Agricola Keim,Juan Pablo; Valderrama,Ximena; Alomar,Daniel; López,Ignacio Fernando. Botanical composition affects the nutritive value and nutrient degradation kinetics of pastures. However, there is little information about pastures composed of various species. The present study was conducted to evaluate in situ degradation kinetics of dry matter (DM), crude protein (CP) and neutral detergent fiber (NDF) of a naturalized non fertilized pasture (NNF), naturalized fertilized pasture (NF), sown pasture with Lolium perenne L. and Trifolium repens L. (RGWC), and sown pasture with Bromus valdivianus Phil., Dactylis glomerata L., Holcus lanatus L., L. perenne and T. repens (MIXED); at three dates of harvest (early-spring, mid-spring and autumn). Duplicate bags were incubated in the rumen of three cannulated cows for 2, 4, 8, 12, 24 or 48 h.... Tipo: Info:eu-repo/semantics/article Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000600005 Registros recuperados: 2 Primeira ... 1 ... Última

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