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.

牧场上的绵羊生产在世界各地的亚热带气候中发挥着重要作用，与这些地区在经济和环境方面都息息相关。但是，这种产量远低于其在亚热带地区的真实潜力，这在很大程度上是由于缺乏对如何喂食放牧羔羊和减轻胃肠道寄生虫感染的知识。由于天气的不稳定性和热带草的高生长率，很难调节羔羊消耗的饲料的质量和数量。此外，由于春季，夏季和秋季的温暖潮湿天气，亚热带牧场的胃肠道寄生虫感染可能很严重。因此，本文的目的是总结在巴西南部地区进行的17年研究，以测试在这些挑战性条件下对养羊者的替代管理。我们的评论表明，母羊在饲养羔羊方面发挥着重要作用。除了保护和提供牛奶外，它们还为羊羔营养提供了更好的牧场结构。creep食和creep食是改善羔羊生长的其他选择。但是，在夏季至秋季结束时，补充浓缩饲料会降低牧草质量。尽管羔羊的L3幼虫可以改善肠道营养，但可以通过改善羔羊营养来减少胃肠道寄生虫感染。在夏季至秋季结束时，补充浓缩饲料会降低牧草质量。尽管羔羊的L3幼虫可以改善肠道营养，但可以通过改善羔羊营养来减少胃肠道寄生虫感染。在夏季至秋季结束时，补充浓缩饲料会降低牧草质量。尽管羔羊的L3幼虫可以改善肠道营养，但可以通过改善羔羊营养来减少胃肠道寄生虫感染。捻转血矛线虫可以在各种牧场高度出现。这表明仅通过控制放牧高度很难控制L3的摄入。我们总结了在牧场系统上饲养羔羊的重要技术，以充分利用高牧草生长并减少亚热带地区常见的强烈寄生虫感染。尽管在世界亚热带地区缺乏类似的研究，但我们会根据其他生态区域和气候的最新研究来讨论研究结果。