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首页> 外文期刊>Proceedings of the New Zealand Grassland Association >Management of browse plants as drought fodder for sheep: a preliminary study.
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Management of browse plants as drought fodder for sheep: a preliminary study.

机译：浏览植物作为绵羊干旱饲料的管理：一项初步研究。

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Two experiments were designed to provide practical guidelines to improve the effective use of browse plants as ruminant feed, especially during dry summers. The effects of planting stock and cutting management on forage yield and quality of Tangoiohybrid willow (Salix matsudana X S. alba), Kinuyanagi willow (Salix kinuyanagi) and erect dorycnium (Dorycnium rectum), a small leguminous shrub, were determined over one summer from 1- and 3-year-old trees. Experiment 1 was arranged as a 2X2 factorial with 2 species and 2 planting stocks in 5 randomized complete blocks. Experiment 2 was also arranged as a split-plot design with cutting heights allocated to main plots and species X frequency to sub-plots in 3 randomized complete blocks. At the hill country site (Ballantrae), the yields of Tangoio (66 g DM/tree) and Kinuyanagi (27 g DM/tree) were low, owing probably to the low soil nutrient status and the harsh climatic conditions. Poor regrowth after the summer harvest at Ballantrae suggested that willows can be utilized only once during the growing season in such environments. At the lowland site (Aokautere), Tangoio was higher yielding (P<0.05) than Kinuyanagi, with erect dorycnium the lowest yielding. Erect dorycnium was ineffective as drought fodder in the Manawatu owing to its relatively low yield. Tree forage digestibility and total nitrogen content were higher in Tangoio than Kinuyanagi (P<0.05) but were not affected by planting stock type and cutting height. Harvesting twice during the growing season increased the edible forage yield by 27%. Total condensed tannin content was higher in Kinuyanagi than Tangoio, a possible disadvantage. Unrooted stem cuttings were as productive as rooted cuttings and are cheaper to establish. It is concluded that Tangoio and Kinuyanagi have potential as drought fodder in addition to their traditional roles in soil conservation and rehabilitation.
机译：设计了两个实验，以提供实用指南，以提高浏览植物作为反刍动物饲料的有效利用，特别是在干燥的夏季。从一个夏季开始，从一个夏季开始，确定了种植和砍伐管理对桔梗柳（Salix matsudana X S. alba），基纽亚吉柳（Salix kinuyanagi）和直立do（Dorycnium直肠）的饲草产量和品质的影响。一岁和三岁的树木。实验1被安排为2X2阶乘，在5个随机完整块中具有2种和2种种植种群。实验2还被安排为分割图设计，在3个随机完整块中将切割高度分配给主图，将X频率分配给子图。在丘陵地带（Ballantrae），Tangoio（66克干/树）和Kinuyanagi（27克干/树）的产量很低，这可能是由于土壤养分状况低和气候条​​件恶劣。 Ballantrae的夏季收成后再生不良，这表明在这种环境下，柳树在生长期只能使用一次。在低地（Aokautere），Tangoio的产量高于Kinuyanagi（P <0.05），直立do的产量最低。直立do由于产量相对较低而不能作为马纳瓦图的干旱饲料。 Tangoio的牧草消化率和总氮含量高于Kinuyanagi（P <0.05），但不受种植类型和伐木高度的影响。在生长季节收获两次，使可食草料产量提高了27％。 Kinuyanagi中的总缩合单宁含量高于Tangoio，这可能是不利的。无根茎插条与有根插条一样有生产力，而且便宜。结论是，Tangoio和Kinuyanagi除了在土壤保持和恢复方面具有传统作用外，还具有干旱饲料的潜力。

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