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	Provedor de dados Chilean J. Agric. Res. (3) Autor Anrique,René (3) Barchiesi-Ferrari,Claudia (2) Keim,Juan Pablo (1) Palavra-chave Extrusion (2) Allantoin (1) Cattle (1) Concentrate supplementation (1) Crude protein (1) High sugar ryegrass (1) Microbial protein synthesis (1) Milk production (1) Protein degradation (1) Protein supplements (1) Purine derivatives (1) Ruminal synchrony (1) Soybean meal (1) Zea mays (1) Mais... Tipo do documento Journal article (3) Ano 2012 (1) 2011 (2) País Chile (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Microbial protein synthesis in young steers fed with grass silage and extruded corn Chilean J. Agric. Res. Barchiesi-Ferrari,Claudia; Anrique,René. Microbial protein synthesis is essential to meet protein requirements in ruminants. The aim of this investigation was to evaluate the effect of incorporating extruded corn (Zea mays L.) into the ration of young steers fed with grass silage on microbial protein synthesis (MPS). Twenty young steers in metabolic cages were used for supplying food. The treatments consisted of combinations of extruded corn (EC) and ground corn (GC) EC-10 (10% EC-30% GC); EC-25 (25% EC-15% GC) and EC-40 (40% EC-0% GC). These foods constituted 40% of the ration (DM-based) and the remaining 60% was grass silage. The MPS was calculated through the excretion of purine derivatives (PD) in the urine, using total collection of urine. The inclusion of a higher percentage of extruded... Tipo: Journal article Palavras-chave: Purine derivatives; Extrusion; Allantoin; Microbial protein synthesis; Zea mays. Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000400012 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 Ruminal Degradability of Dry Matter and Crude Protein from Moist Dehulled Lupin and Extruded Rapeseed Meal Chilean J. Agric. Res. Barchiesi-Ferrari,Claudia; Anrique,René. The flow of ruminal undegradable protein (RUP) to the small intestine can be increased if ruminal degradation of dietary protein is reduced. The objective of this study was to evaluate the effect of extrusion on ruminal degradability of dry matter (DM) and crude protein (CP) from dehulled lupin (Lupinus albus L.) (DL) and rapeseed (Brassica napus L.) meal (RM). Unextruded soybean (Glicine max L.) meal (SBM) was used as a control. The DL was extruded at 130 ºC with 20% moisture and RM was extruded at 120 ºC with 20% moisture. Ruminal degradability was evaluated in situ by incubating feed samples for 2, 4, 8, 12, 24, and 48 h of fermentation in the rumen using three rumen-fistulated dairy cows. Values of CP soluble fraction (“a”) in SBM, DL, extruded... Tipo: Journal article Palavras-chave: Extrusion; Protein supplements; Protein degradation; Soybean meal; Cattle. Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000300014 Registros recuperados: 3 Primeira ... 1 ... Última

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