已开发出用于切割和携带系统的大型和矮小的象草品种。矮人克隆具有更好的消化率;另一方面,高大的品种生产力更高。目的是验证最推荐用于切割和携带的草:高大(大象B和IRI-381)或矮(台湾A-1462.37和Mott)大象草品种,以喂养24只雄性绵羊,年龄在4至5个月之间,未阉割,体重约24.08±1.76kg,按摄入量取样,消化率,性能,摄食行为,氮平衡,微生物蛋白质合成,代谢参数,和瘤胃降解性。本研究分为两个实验:实验1历时38天,7个用于适应,31个用于数据收集。向大象草品种提供矿物混合物。收集的数据是摄入量,消化率,摄食行为,代谢参数,微生物蛋白质合成,和性能提交给一个完全随机的设计。对于实验2,对三只瘤胃瘘动物进行取样,持续20天。在这种情况下,在分裂区设计中采用随机区组.两种设计均为P<0.05,并通过SAS统计软件进行分析。莫特和台湾A-1462.37品种提供了更多的摄入量,消化率,体重增加,喂食时间,氮保留,微生物蛋白质合成的生产和效率,干物质(DM)和中性洗涤纤维(NDF)降解,DM,粗蛋白,NDF,但反省时间比大象B和IRI-381短。葡萄糖也有显著差异,甘油三酯,血浆尿素,血清总蛋白,尿尿素(mg/L),和尿中尿素排泄(毫克/天)。矮象草品种莫特和台湾A-1462.37比高大的大象B和IRI-381具有更大的营养价值。矮象草建议用于切割和携带系统。
Tall- and dwarf-sized elephant grass cultivars have been developed for cut-and-carry system. Dwarf clones have better digestibility; on the other hand, tall-sized cultivars are more productive. The aim was to verify which grass would be most recommended for cut-and-carry: tall-sized (Elephant B and IRI-381) or dwarf (Taiwan A-146 2.37 and
Mott) elephant grass cultivars to feed 24 male sheep, aged between 4 and 5 months, uncastrated, weighing approximately 24.08 ± 1.76 kg body weight which were sampled on intake, digestibility, performance, ingestive behavior, nitrogen balance, microbial protein synthesis, metabolic parameters, and ruminal degradability. This research was divided into two experiments: experiment 1 lasted 38 days, seven for adaptation and 31 for data collection. Elephant grass cultivars were supplied with a mineral mixture. Data collected were intake, digestibility, ingestive behavior, metabolic parameters, microbial protein synthesis, and performance submitted to a completely randomized design. For experiment 2, three rumen fistulae animals were sampled, lasting 20 days. In this case, a randomized block in split-plot design was applied. Both designs were with P < 0.05 and analyzed through SAS statistical software.
Mott and Taiwan A-146 2.37 cultivars provided greater intake, digestibility, weight gain, feeding time, nitrogen retention, production and efficiency of microbial protein synthesis, dry matter (DM) and neutral detergent fiber (NDF) degradability, and DM, crude protein, and NDF, but shorter rumination time rather than Elephant B and IRI-381. There was also a significant difference for glucose, triglycerides, plasma urea, total serum protein, urinary urea (mg/L), and urea excretion in urine (mg/day). Dwarf elephant grass cultivars as
Mott and Taiwan A-146 2.37 have greater nutritional value than tall-sized Elephant B and IRI-381. Dwarf elephant grass is recommended for cut-and-carry system.