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	Provedor de dados Agriscientia (Córdoba) (1) R. Bras. Zootec. (1) Autor Galantini,J.A (1) Iglesias,J.O (1) Krüger,H (1) Salem,Hichem Ben (1) Venanzi,S (1) Palavra-chave Semiarid regions (2) Alternative feeds (1) Animal trampling (1) Feeding management (1) Performance (1) Small ruminants (1) Soil porosity (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2014 (1) 2010 (1) País Argentina (1) Brazil (1) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Soil pore distribution as affected by cattle trampling under no-till and reduced-till systems Agriscientia (Córdoba) Iglesias,J.O; Galantini,J.A; Krüger,H; Venanzi,S. Soil pore size affects soil air and water dynamics, and thus influence crop productivity. The aim of this study was to evaluate the impact of reduced-tillage (RT) and no-tillage (NT) systems on soil pore distribution under animal grazing. The soil was sampled at 0-5, 5-10, 10-15 and 15-20 cm depths before and after animal grazing. Bulk density, total porosity and the volume of three pore sizes (macropores, mesopores and micropores) were determined. Differences in total porosity between both tillage systems were statistically significant (P<0.01) in the top 10 cm layer before grazing. Lower total porosity in NT could be related to the effect of previous years&#8217;grazing. In RT, disk operations before planting the oat (Avena sativa) crop increased... Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil porosity; Animal trampling; Semiarid regions. Ano: 2014 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2014000200004 Nutritional management to improve sheep and goat performances in semiarid regions R. Bras. Zootec. Salem,Hichem Ben. Small ruminant production is the main source of income of farmers living in arid and semiarid regions. Sheep and goats raised in these areas are generally confronted with severe nutritional deficits during food scarcity period which exacerbate disease and health problems and consequently low productive and reproductive performances. These areas are characterized by rainfall seasonality and scarcity resulting in a low fodder potential. Therefore, native rangelands are degrading due to overgrazing, high stocking rates and mismanagement. Options to improve small ruminant-based production systems include i) innovative technologies targeting the increase of feed resources availability, rumen manipulation using natural compounds to boost microbial activity,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Alternative feeds; Feeding management; Performance; Semiarid regions; Small ruminants. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001300037 Registros recuperados: 2 Primeira ... 1 ... Última

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