Abstract：
We aimed to evaluate the effects of different drying methods for banana residues on the energy metabolism and respirometry of growing lambs. Twenty Santa Inês x Dorper lambs were fed five experimental diets: Tifton 85 grass hay (Control), shade-dried banana leaf hay (LH Shade), shade-dried pseudostem banana hay (PH Shade), sun-dried banana leaf hay (LH Sun), and sun-dried banana pseudostem hay (PH Sun). Nutrient intake and digestibility were assessed in metabolic cages, whereas O2 consumption and CO2, methane, and heat production were measured in a respirometry chamber with animals fed at maintenance and ad libitum levels. Nutrient and energy intake was not influenced by diet. Pseudostem hay had higher apparent digestibility of dry matter (71.5%), organic matter (72.4%), and neutral detergent fiber (58.0%). However, this led to greater energy loss in the form of methane (12.1%). The banana residue hays and drying methods did not alter oxygen consumption, CO2 production, or heat production of animals fed ad libitum or during maintenance. On the other hand, the use of leaf hay resulted in a reduction of 24.7% in enteric methane production of animals fed ad libitum. The inclusion of pseudostem hay is recommended in sheep feedlot diet. This residue provided greater use of DM, however promoted a greater loss of energy in the form of methane, resulting in similar energy consumption. The drying methods did not reduce the availability of nutrients and the sun drying method is recommended, since it is a faster drying method.
摘要：
我们旨在评估香蕉残留物的不同干燥方法对生长羔羊的能量代谢和呼吸测定的影响。二十只SantaInesxDorper羔羊饲喂了五种实验饮食：Tifton85草干草（对照），树干香蕉叶干草(LHShade),树干假茎香蕉干草（PHShade），晒干的香蕉叶干草（LH太阳），和晒干的香蕉假茎干草（PHSun）。在代谢笼中评估营养素摄入量和消化率，而氧气消耗和二氧化碳，甲烷，和热量的产生是在呼吸测定室中测量的，动物以维持和随意水平喂养。营养和能量摄入不受饮食影响。假茎干草具有较高的干物质表观消化率（71.5%），有机质(72.4%)，和中性洗涤剂纤维(58.0%)。然而,这导致甲烷形式的更大能量损失(12.1%)。香蕉渣干草和干燥方法没有改变耗氧量，二氧化碳生产,或随意喂养或维持期间的动物产热。另一方面,叶干草的使用导致随意饲喂的动物的肠甲烷产量减少了24.7％。建议在绵羊饲养场日粮中加入假茎干草。这种残留物提供了更多的DM使用，然而，甲烷形式的能量损失更大，导致类似的能源消耗。干燥方法没有降低营养物质的可用性，建议采用阳光干燥方法，因为它是一种更快的干燥方法。
