Piñeiro-Vázquez Angel Trinidad, Ayala-Burgos Armín Javier, Chay-Canul Alfonso Juventino, Ku-Vera Juan Carlos
Departamento de Nutrición Animal. Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Carretera Mérida-Xmatkuil km 15.5, C.P. 97300, Mérida, Yucatán, México.
Trop Anim Health Prod. 2013 Feb;45(2):577-83. doi: 10.1007/s11250-012-0262-6. Epub 2012 Sep 21.
The aim of the study was to evaluate the effect of graded levels of Enterolobium cyclocarpum pods in the ration on feed intake and digestibility by Pelibuey lambs. Five dietary treatments were imposed where ground pods replaced concentrate diet at 0, 20, 30, 40 and 50 % of dry matter (DM), respectively. The concentrate portion was composed of ground sorghum, soybean meal, cane molasses and minerals. Five entire Pelibuey lambs with initial bodyweight 34 ± 2 kg were allocated in the treatments in a 5 × 5 Latin square design. Values of dry matter intake (DMI) and dry matter (DMD) and organic matter (OMD) digestibility were measured and metabolisable energy intake (MEI) estimated. Rumen degradation constants for E. cyclocarpum were also measured. There were no differences (P > 0.05) in average DMI (86.6 g/kg(0.75)) and OMI (81.2 g/kg(0.75)) among treatments. As the level of incorporation of E. cyclocarpum pods increased, voluntary DMI and OMI increased, whereas apparent DMD and OMD decreased linearly. Average digestible DM (65 g/kg(0.75)) and OM (61 g/kg(0.75)) intakes were similar (P > 0.05) among treatments. Similarly, MEI (0.976 MJ ME kg(0.75)/day) was not different (P > 0.05) among treatments. The potential rumen degradation (A + B) of ground pods of E. cyclocarpum was 866.4 g/kg DM. Ground pods of E. cyclocarpum can be employed for lamb feeding up to 50 % of the ration, without affecting DMI, DM apparent digestibility and MEI.
本研究的目的是评估日粮中不同比例的象耳豆荚对佩利布埃羊采食量和消化率的影响。设置了五种日粮处理，分别用磨碎的豆荚以干物质（DM）的0%、20%、30%、40%和50%替代精料日粮。精料部分由磨碎的高粱、豆粕、甘蔗糖蜜和矿物质组成。五只初始体重为34±2千克的完整佩利布埃羊，采用5×5拉丁方设计分配到各处理组。测定了干物质采食量（DMI）、干物质消化率（DMD）和有机物消化率（OMD）的值，并估算了代谢能摄入量（MEI）。还测定了象耳豆在瘤胃中的降解常数。各处理组之间的平均DMI（86.6克/千克（0.75））和OMI（81.2克/千克（0.75））没有差异（P>0.05）。随着象耳豆荚掺入水平的增加，自愿DMI和OMI增加，而表观DMD和OMD呈线性下降。各处理组之间的平均可消化干物质摄入量（65克/千克（0.75））和有机物摄入量（61克/千克（0.75））相似（P>0.05）。同样，各处理组之间的MEI（0.976兆焦代谢能/千克（0.75）/天）没有差异（P>0.05）。象耳豆磨碎豆荚的潜在瘤胃降解率（A+B）为866.4克/千克DM。象耳豆磨碎豆荚可用于羔羊日粮，比例最高可达50%，而不影响DMI、干物质表观消化率和MEI。
