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首页> 外文期刊>Ecological research >Moose winter diet components from feces and field feeding signs: consistency and variability related to forage availability and nutritional requirements
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Moose winter diet components from feces and field feeding signs: consistency and variability related to forage availability and nutritional requirements

机译：粪便和田间觅食迹象中的驼鹿冬季饮食成分：与饲料供应和营养需求相关的一致性和变异性

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摘要

Diet composition detection of herbivores, relating to feeding strategies, might be influenced by forage availability, geographical variation, and the results of diet estimation also varied in some extent by the different research methods. Therefore, it is difficult to assess how effective various methods of identifying herbivores diet components and their nutritional requirements are. In order to assess the consistency and variability of moose (Alces alces) winter diet composition across a large spatial scale, we compared the results of diet analysis from fecal analysis to those of parallel field survey related to forage availability and crude protein requirements during winter from December to March of 2012, 2013, and 2014 in the Greater Khingan Mountains, China. Our results suggested that: (1) the diet components variability between the two methods exist, and the value of species richness index, shannon wiener index and species evenness index in fecal analysis were greater than in field survey; (2) staple foods (birch, willow and aspen) identified from the two methods exhibited the stable consistency; and the percentage of birch was positive relative to forage availability from both methods; (3) quantitative crude protein of staple food items were different between both method, it was much lower than moose nutritional requirement by fecal analysis, and it was match the nutritional requirement of moose during field survey. These findings suggested that the two methods kept variability in detecting quantitative nutritional components, and only diet composition overlap consistency could not be reflected as quantitative nutritional similarity.
机译：食草动物的饮食成分检测与饲喂策略有关，可能受草料供应量，地理差异的影响，并且不同研究方法对饮食估算的结果也会有所不同。因此，很难评估鉴定草食动物饮食成分及其营养需求的各种方法的有效性。为了评估驼鹿（Alces alces）冬季饮食组成在较大空间范围内的一致性和变异性，我们将粪便分析的饮食分析结果与平行实地调查的饮食分析结果进行了比较，这些结果与冬季冬季的饲料供应和粗蛋白需求有关2012年12月至2012年3月，2013年和2014年在中国大兴安岭。我们的结果表明：（1）两种方法之间存在日粮成分变异性，粪便分析中物种丰富度指数，香农维纳指数和物种均匀度指数的价值大于田间调查； （2）从两种方法中识别出的主食（桦木，柳树和白杨木）表现出稳定的一致性；相对于两种方法的草料利用率，桦木的百分比为正。 （3）两种方法中主食定量蛋白质含量不同，粪便分析表明其含量远低于驼鹿的营养需求，与实地调查的驼鹿的营养需求相吻合。这些发现表明，这两种方法在定量营养成分检测中保持可变性，只有饮食组成重叠的一致性不能反映为定量营养相似性。

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  • 来源
    《Ecological research》 |2017年第5期|685-692|共8页
  • 作者

    Bao Heng; Dou Hongliang; Ma Yingjie; Liu Hui; Jiang Guangshun;

  • 作者单位

    Northeast Forestry Univ, Coll Wildlife Resources, Feline Res Ctr, Chinese State Forestry Adm, 26 Hexing Rd, Harbin 150040, Heilongjiang, Peoples R China;

    Northeast Forestry Univ, Coll Wildlife Resources, Feline Res Ctr, Chinese State Forestry Adm, 26 Hexing Rd, Harbin 150040, Heilongjiang, Peoples R China;

    Northeast Forestry Univ, Coll Wildlife Resources, Feline Res Ctr, Chinese State Forestry Adm, 26 Hexing Rd, Harbin 150040, Heilongjiang, Peoples R China;

    Northeast Forestry Univ, Coll Wildlife Resources, Feline Res Ctr, Chinese State Forestry Adm, 26 Hexing Rd, Harbin 150040, Heilongjiang, Peoples R China;

    Northeast Forestry Univ, Coll Wildlife Resources, Feline Res Ctr, Chinese State Forestry Adm, 26 Hexing Rd, Harbin 150040, Heilongjiang, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Diet components; Fecal analysis; Field survey; Forage availability; Crude protein;

    机译：日粮成分;粪便分析;田间调查;饲料利用率;粗蛋白;

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