Título:	Management Strategies for Lamb Production on Pasture-Based Systems in Subtropical Regions: A Review.
Autoria:	POLI, C. H. E. C. MONTEIRO, A. L. G. DEVINCENZI, T. ALBUQUERQUE, F. H. M. A. R. de MOTTA, J. H. da BORGES, L. I. MUIR, J. P.
Afiliação:	CESAR HENRIQUE ESPÍRITO CANDAL POLI, Universidade Federal do Rio Grande do Sul (UFRGS) - Porto Alegre, RS, Brazil; ALDA LUCIA GOMES MONTEIRO, Universidade Federal do Paraná (UFPR) - Curitiba, PR, Brazil; THAIS DEVINCENZI, Instituto Nacional de Investigación Agropecuaria (INIA) - Tacuarembó, Uruguay; FERNANDO HENRIQUE MELO ANDRADE RODRIGUES DE ALBUQUERQUE, CNPC; JULIANO HENRIQUES DA MOTTA, Universidade Federal do Rio Grande do Sul (UFRGS) - Porto Alegre, RS, Brazil; LUIZA ILHA BORGES, Universidade Federal do Paraná (UFPR) - Curitiba, PR, Brazil; JAMES PIERRE MUIR, Texas A&M AgriLife - Stephenville, TX, United States.
Ano de publicação:	2020
Referência:	Frontiers in Veterinary Science, v. 7, article 543, Sept. 2020.
Conteúdo:	Sheep production on pasture plays an important role in subtropical climates around the world, with great economic and environmental relevance to those regions. However, this production is much lower than its true potential in subtropical regions, largely due to lack of knowledge of how to feed grazing lambs, and mitigate gastrointestinal parasite infections. Due to weather instability and the high growth rate of tropical grasses, it is difficult to adjust the quality and quantity of feed consumed by lambs. In addition, due to warm, wet weather during spring, summer, and autumn, gastrointestinal parasite infection can be intense on subtropical pastures. Thus, the objective of this paper is to summarize 17 years of research in southern regions of Brazil testing alternative management for sheep farmers under these challenging conditions. Our review indicates that ewes play important roles raising their lambs. Besides protecting and providing milk, they leave a better pasture structure for lamb nutrition. The use of creep feeding and creep grazing are additional alternatives to improve lamb growth. However, feeding supplementation with concentrate can deteriorate pasture quality at the end of the summer?autumn season. Gastrointestinal parasitic infections can be reduced with improved lamb nutrition, although L3 larvae of Haemonchus contortus can be present at various pasture heights. This indicates that it is difficult to control L3 ingestion solely by manipulating grazing heights. We summarize important technologies for raising lambs on pasture-based systems to make the best of high herbage growth and minimize intense parasitic infections common in subtropical regions. We discuss research results in light of the latest studies from other ecoregions and climates, although there is a lack of similar research in subtropical regions of the world.
NAL Thesaurus:	Sheep feeding Feed supplements Feed concentrates Pastures Animal production Creep feeding Lamb feeding Ewes Pasture management Animal performance
Palavras-chave:	Creep grazing Concentrate supplement
Digital Object Identifier:	https://doi.org/10.3389/fvets.2020.00543
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPC)