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首页> 外文期刊>Journal of Agriculture of the University of Puerto Rico >EFFECT OF THE PHYSICAL FORM OF TROPICAL LEGUMES CRATYLIA ARGENTEA (DESV.) KUNTZE, CALLIANDRA CALOTHYRSUS MEISN. AND LEUCAENA LEUCOCEPHALA (LAM. DE WIT) ON SELECTIVE CONS UMPTION BY LAMBS'
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EFFECT OF THE PHYSICAL FORM OF TROPICAL LEGUMES CRATYLIA ARGENTEA (DESV.) KUNTZE, CALLIANDRA CALOTHYRSUS MEISN. AND LEUCAENA LEUCOCEPHALA (LAM. DE WIT) ON SELECTIVE CONS UMPTION BY LAMBS'

机译：热带豆科植物桔梗的物理形态的影响，CALIANDRA CALOTHYRSUS MEISN。和LEUCAENA LEUCOCEPHALA（LAM。DE WIT）关于羔羊的选择性消费

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摘要

Tropical legumes can improve animal performance by increasing forage intake and digestibility and also indirectly, by fixing nitrogen in the soil, thus improving yield and crude protein content of grasses grown in association (Broderick, 1995). In thetropics, shrub legumes have a potential use in small ruminant feeding systems. Shrubs generally out-yield herbaceous legume species, are more tolerant to adverse management conditions, and produce good quality forage even during long dry seasons (Lascano and Avila, 2002). However, their evaluation as forage for small ruminants has been limited. Cratylia argéntea (Desv.) Kuntze (CA), Calliandra calothyrsus Meissner (CC) and Leu-caena leucocephala (Lam. de Wit) (LL), are three potential tropical shrub legume species that need further evaluation as forage sources for sheep and goats. All three shrubs have previously been evaluated as supplements and in protein banks in ruminant grazing systems (Pamo et al., 2005; Espinoza et al., 1999; Sánchez and Garcia, 1998). However, there is limited information on the effect of the physical form of these shrubs on palat-ability, preference, and ingestive behavior of small ruminants. The objective of this study was to evaluate in three different experiments the selective consumption of CA, CC, and LL by lambs when offered: under grazing conditions in pastures with grass-legume associations, as legume hay when combined with grass hay, or as fresh-cut legume herbage for animals in confinement.
机译：热带豆科植物可以通过增加草料的摄入量和消化率来提高动物的生产能力，还可以通过在土壤中固氮来间接提高动物的生长能力，从而提高联合生长的草的产量和粗蛋白含量（Broderick，1995）。在热带地区，灌木豆科植物在小型反刍动物饲养系统中具有潜在用途。灌木通常能获得高产的草本豆科植物品种，更能耐受不利的管理条件，即使在漫长的干旱季节也能产生优质的牧草（Lascano和Avila，2002）。但是，它们对小型反刍动物的饲料评价有限。 Cratyliaargéntea（Desv。）Kuntze（CA），Calliandra calothyrsus Meissner（CC）和Leu-caena leucocephala（Lam。de Wit）（LL）是三种潜在的热带灌木豆科植物，需要进一步评估，作为绵羊和山羊的饲料来源。先前已经评估了这三种灌木作为补充剂和反刍动物放牧系统中的蛋白质库（Pamo等，2005; Espinoza等，1999;Sánchez和Garcia，1998）。但是，关于这些灌木的物理形态对小反刍动物适口性，偏好和摄食行为的影响的信息有限。这项研究的目的是在三个不同的实验中评估提供的羔羊对CA，CC和LL的选择性消费：在放牧条件下与草-豆科植物结合的牧场，在与草干草结合时作为豆类干草或新鲜禁食动物用豆科牧草。

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