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首页> 外文学位 >Influence of supplemental legumes that contain tannins and saponins on intake and diet digestibility in sheep fed grasses that contain alkaloids.
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Influence of supplemental legumes that contain tannins and saponins on intake and diet digestibility in sheep fed grasses that contain alkaloids.

机译：含有单宁和皂苷的补充豆类对饲喂含有生物碱的绵羊草的摄入量和日粮消化率的影响。

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摘要

My objectives were to determine if nutritional benefits occur when animals are offered foods with compounds---alkaloids, saponins, and tannins---that are potentially complementary. I hypothesized that food intake and digestibility increase when lambs consume plants such as alfalfa ALF that contain saponins or birdsfoot trefoil (BFT) that contain tannins when the basal diet is endophyte-infected tall fescue (TF) or reed canarygrass (RCG) both of which contain alkaloids. I predicted that the nutritional status of lambs would be enhanced if basal diets of alkaloid-containing grasses were supplemented with ALF or BFT.;Lambs fed a basal diet of either endophyte-infected TF or RCG ate more food and consequently digested more dry matter, energy and nitrogen when supplemented with ALF or BFT. Lambs ingested more dry matter and digested more nutrients when fed a basal diet of RCG than one of TF, and supplementing with ALF and BFT was more beneficial for lambs fed TF than for lambs fed RCG. Increased intake of digestible nutrients was due to greater intake when lambs were offered more than one food, not due to an increase in digestibility.;In pen trials meant to complement the field trials, lambs were offered an alkaloid-containing (either gramine or 5-methoxy-N,N-dimethyltryptamine) total mixed ration and supplemented with a food that contained saponins or tannins. All rations were isocaloric (3.3Mcal/kg) and isonitrogenous (14% CP). Lambs fed a ration with either alkaloid and offered a food containing saponin digested approximately the same amount of dry matter, energy, nitrogen, and NDF as lambs not offered saponin. When lambs were fed a ration with either alkaloid and supplemented with food that contained tannins, tannin consumption adversely affected dry matter, energy, and NDF digestibility, but lambs offered food with tannins increased dry matter intake, and as a result, they digested the same amount of dry matter, energy, and NDF as lambs not offered the food with tannins. Lambs offered tannin digested and retained more nitrogen than lambs not offered tannin. These findings indicate a nutritional advantage for sheep eating mixtures as opposed to monocultures of foods with different profiles of secondary compounds and nutrients.
机译：我的目标是确定向动物提供具有潜在互补性的化合物（生物碱，皂苷和单宁酸）的食物时是否会产生营养益处。我假设当基础饮食为内生菌感染的高羊茅（TF）或芦苇金丝雀（RCG）时，当羔羊食用苜蓿等ALF含有皂苷或鸟脚三叶（BFT）含有单宁的植物时，食物摄入量和消化率都会增加含有生物碱。我预测如果在碱性生物基草的基础日粮中添加ALF或BFT，则羔羊的营养状况将得到改善。;羔羊饲喂内生细菌感染的TF或RCG的基础日粮，可以吃更多的食物，从而消化更多的干物质，补充ALF或BFT时能量和氮。饲喂RCG的基础日粮时，羔羊比TF饲喂更多的干物质，并消化了更多的营养素，补充LF和BFT对饲喂TF的羔羊比饲喂RCG的羔羊更有益。可消化营养素的摄入量增加是由于当给羊羔提供一种以上的食物时摄入量增加了，而不是由于消化率的提高所致。在意在补充田间试验的围栏试验中，羊羔被提供了一种含生物碱的食物（无论是禾本科还是5种）。 -甲氧基-N，N-二甲基色胺）的总混合定量，并辅以含有皂苷或单宁的食物。所有配比均为等热量（3.3Mcal / kg）和等氮（14％CP）。羔羊饲喂任何一种生物碱，并提供一种食物，其中所含的皂苷消化后的干物质，能量，氮和NDF的含量与不提供皂苷的羔羊相同。当给羔羊定量饲喂生物碱并补充含单宁的食物时，单宁的食用会对干物质，能量和NDF的消化率产生不利影响，但是给羔羊提供单宁的食物会增加干物质的摄入量，因此，他们消化了相同的食物。大量的干物质，能量和NDF，因为羔羊没有为单宁提供食物。提供的单宁被消化的羔羊比不提​​供单宁的羔羊保留更多的氮。这些发现表明，羊食用混合饲料的营养优势，与单一化合物的次要化合物和营养素的概况不同。

著录项

  • 作者

    Owens, Jacob.;

  • 作者单位

    Utah State University.;

  • 授予单位 Utah State University.;
  • 学科 Agriculture Animal Culture and Nutrition.
  • 学位 M.S.
  • 年度 2008
  • 页码 63 p.
  • 总页数 63
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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