聚盐植物碱蓬的营养及其对育肥羊饲用效果的研究

发布时间：2018-03-13 07:37

本文选题：碱蓬　切入点：非常规饲料　出处：《内蒙古农业大学》2017年硕士论文　论文类型：学位论文

【摘要】：受土地盐碱化和牧草资源短缺的影响,盐生植物碱蓬作为非常规饲料是一种潜在的饲料资源,但是现有的研究结果初步表明,盐生植物作为一类特殊的饲料资源,有效能值低和含盐量高是其最突出的2个限制因素。能否把碱蓬整株作为常规粗饲料替代品这方面,鲜有研究报道,本实验可以填补碱蓬饲料化这一领域空白。本实验对体外筛选的配方进行动物饲喂试验及效果验证,采用饲养试验与消化试验相结合的办法,对碱蓬饲料的适口性、对动物的生长性能、健康状况及消化利用效率进行测定和评价:应用康奈尔净碳水化合物-蛋白质(CNCPS)体系对查干淖尔碱蓬的营养价值进行评定;本实验旨在对碱蓬营养与饲喂价值评定,对盐生植物饲料化开发利用提供技术储备和理论依据。1.碱蓬常规营养成分测定通过常规营养成分的分析,碱蓬与常规粗饲料羊草相比,CP(DM%)略高,ADF(DM%)、NDF(DM%)和ADL(DM%)较低,碱蓬中Ash(DM%)含量明显高于羊草。可以大致判断碱蓬的营养价值优于羊草。2.应用CNCPS体系对碱蓬营养价值及饲用价值评定CNCPS体系对蛋白质和碳水化物的划分,同地区的碱蓬与其他常规牧草相比,蛋白中易消化降解部分B1、PB2比例相对较高,难以消化降解部分PC远低于常规粗饲料。碳水化合物中易消化利用的部分CA、CB1所占比例明显高于其他常规粗饲料,不易消化利用部分CC所占比例明显低于其他常规粗饲料。3.不同梯度碱蓬日粮对绵羊生长性能的影响通过饲养试验饲喂不同梯度碱蓬日粮得出结论,以500%碱蓬替代常规粗饲料,绵羊生长性能最好,平均日增重最高。4.不同梯度碱蓬日粮对绵羊各营养成分消化率的影响通过消化试验饲喂不同梯度碱蓬日粮得出结论,碱蓬平均CP消化率较低,但日均可消化获得CP量高于常规粗饲料;碱蓬平均GE消化率与常规粗饲料没有显著差异,但日均获得DE低于常规粗饲料。
[Abstract]:Influenced by the salinization of land and the shortage of forage resources, Suaeda salsa, as an unconventional feed, is a potential forage resource. However, the present research results show that halophyte is a special kind of forage resource. Low effective value and high salt content are the two most prominent limiting factors. Whether the whole Suaeda salsa strain can be used as a conventional forage substitute is rarely reported. This experiment can fill up the blank in the field of Suaeda salsa feed. In this experiment, the formula selected in vitro was fed to animals and its effect was verified. The palatability of Suaeda salsa feed was studied by combining feeding test with digestion test. The growth performance, health status and digestibility efficiency of animals were measured and evaluated. The nutritional value of Suaeda charanannae was evaluated by using the Cornell net carbohydrate-protein CNCPS system. The purpose of this experiment was to evaluate the nutrition and feeding value of Suaeda salsa and to provide technical reserve and theoretical basis for the development and utilization of halophytic plant feed. Suaeda salsa is a little higher than conventional crude forage Leymus chinensis. The nutrient value of Suaeda salsa was higher than that of Leymus chinensis, and the nutritional value of Suaeda salsa was better than that of Leymus chinensis. The nutritional value and feed value of Suaeda salsa were evaluated by using CNCPS system to evaluate the classification of protein and carbohydrate in CNCPS system. Compared with other conventional forage, Suaeda salsa in the same area has a relatively high proportion of easily digestible and degradable part B _ (1) O _ (2). The percentage of carbohydrates easily digestible and reused part of CAGCB1 was significantly higher than that of other conventional fodder. The effect of different gradient Suaeda Suaeda Diet on growth performance of Sheep was concluded by feeding different gradient Suaeda Suaeda Diet with 500% Suaeda salsa instead of conventional forage. The effect of different gradient Suaeda Suaeda Diet on the digestibility of nutrient components in Sheep was studied. The results showed that the average CP digestibility of Suaeda salsa was lower than that of the control. The average GE digestibility of Suaeda salsa was not significantly different from that of the conventional forage, but the average DE obtained per day was lower than that of the conventional crude feed.
【学位授予单位】：内蒙古农业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：S826.5

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