摘要
Inclemency of weather frequently causes critical water contents in cereal grains above 15%. Ensiling in pre-mature condition may be an alternative to other techniques of preservation. Aim of this study was to compare apparent total tract digestibility (Dt; barley, wheat, triticale, rye) of proximate nutrients and pre-caecal digestibility (Dpc; barley, wheat) of amino acids (AA), respectively, from cereal grains in ensiled and almost dry condition. Moistly harvested cereal grains (67–73% dry matter) were milled through a 4-mm sieve and ensiled with lactic acid bacteria (LAB, 3 × 105 colony forming units/g Lactobacillus plantarum DSMZ 8862 and 8866). To investigate Dt, two trials were conducted with six Mini-Lewe pigs and four German Landrace pigs, respectively. Dpc of AA was determined using four German Landrace pigs with ileo-rectal anastomosis. Dt of proximate nutrients did not differ between cereal grains and their silages, except for ether extract, which was more digestible in ensiled than dry wheat, triticale and rye (p < 0.05). Lysine content was lower in ensiled than dry barley and wheat. In barley, ensiling was accompanied by reduced Dpc of lysine and histidine (p < 0.05). In wheat, ensiling increased Dpc of lysine, methionine, threonine and leucin (p < 0.05). Ensiling of pre-mature cereal grains with LAB can serve as a reasonable storage alternative. However, as limited data are yet available, further research is required to understand completely the impact of ensiling on nutritional value as indicated, for example, by the lysine content and the Dpc of certain AA.
摘要译文
天气Inclemency经常导致谷粒的15％以上的临界水含量。青贮预成熟条件可以是一种替代保存其他技术。这项研究的目的是比较明显的总消化率;近因营养素和预盲肠消化率（D PC（D吨大麦，小麦，黑小麦，黑麦），大麦，小麦的氨基酸（AA），分别从谷物中青贮和几乎无水的条件）。的潮湿的收获谷粒（67-73％干物质）通过一个4毫米筛研磨并青贮用乳酸菌（LAB，3×10 SUP 5 / SUP菌落形成单位/克植物乳杆菌DSMZ 8862和8866）。调查ð吨，两项试验分别有六个小型猪LEWE和四个德国长白猪进行，分别。 AA的D- PC用四家德国长白猪与回肠直肠吻合术确定。近因营养素ð吨谷物及青贮之间没有差异，除了用乙醚提取，这是在比青贮干小麦，黑小麦和黑麦更易消化（P青贮伴随着赖氨酸和组氨酸（P减少ðPC与雷青贮预成熟谷粒可以作为合理的存储选择。然而，由于有限的数据尚未公布，进一步的研究是需要完全理解青贮营养值所指示的，例如，由赖氨酸含量和一定的AA对D PC的影响。
W. Hackl[1]; B. Pieper[2]; R. Pieper[3]; U. Korn[2] and A. Zeyner[1];. Effects of ensiling cereal grains (barley, wheat, triticale and rye) on total and pre-caecal digestibility of proximate nutrients and amino acids in pigs[J]. Journal of Animal Physiology and Animal Nutrition, 2010,94(6): 729-735