Arid
DOI10.3390/ani10010046
Use of Fecal Indices as a Non-Invasive Tool for Nutritional Evaluation in Extensive-Grazing Sheep
Orellana, Carla1; Parraguez, Victor Hugo2,3; Arana, Wilmer2; Escanilla, Juan2; Zavaleta, Carmen1; Castellaro, Giorgio2
通讯作者Castellaro, Giorgio
来源期刊ANIMALS
ISSN2076-2615
出版年2020
卷号10期号:1
英文摘要Simple Summary To adequately manage ruminants in extensive grazing, it is important to have non-invasive techniques to evaluate their nutritional status. Some of these techniques are based on the use of fecal indicators, such as the concentration of nitrogen, phosphorus and 2,6-diaminopimelic acid. These indices have been used in some species of wild ungulates, but their use has been limited in domestic ruminants. Hence, this research proposes the evaluation of fecal indices, as predictors of intake of dry matter, nitrogen and phosphorus in sheep that graze on Mediterranean annual grasslands. Abstract The aim of the present study was to assess the reliability of fecal indices as predictors of nutrient intake in sheep under extensive grazing conditions. Fecal concentrations of 2,6-diaminopimelic acid (DAPAf), nitrogen (FN) and phosphorous (FP) were determined in four sheep kept in an extensive grazing system on annual Mediterranean grassland in the vegetative, reproductive and dry phenological stages. Metabolizable energy (MEI), crude protein (CPI) and phosphorus (PI) intake were calculated using the botanical composition, metabolizable energy, crude protein and phosphorus concentrations in each vegetal species making up the animal's diet. Significant differences were observed in the nutrient intake for each phenological stage (p < 0.0001). The highest MEI, CPI and PI were observed during the vegetative stage (p < 0.0001). FN and FP were different in each phenological stage (p < 0.0001), with significant correlations observed between these variables (r = 0.916; p < 0.0001). Regressions among nutrient intake and fecal indices were significant, except in the cases of DAPAf and MEI, and DAPAf and CPI. Based on these results, fecal indices could be used to estimate nutrient intake in sheep under extensive grazing on annual Mediterranean grassland.
英文关键词annual Mediterranean grassland fecal indices sheep extensive grazing evaluation non-invasive tool
类型Article
语种英语
国家Chile
开放获取类型Green Published, gold
收录类别SCI-E
WOS记录号WOS:000515364400046
WOS关键词DESERT MULE DEER ; DIAMINOPIMELIC ACID ; DIET QUALITY ; PHOSPHORUS CONCENTRATIONS ; 2,6-DIAMINOPIMELIC ACID ; NITROGEN ; FECES ; FORAGE ; DIGESTIBILITY ; GRAIN
WOS类目Agriculture, Dairy & Animal Science ; Veterinary Sciences
WOS研究方向Agriculture ; Veterinary Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/314021
作者单位1.Univ Chile, Doctoral Program Forest Agr & Vet Sci, Campus Sur, Santiago 8820808, Chile;
2.Univ Chile, Fac Agr Sci, Santiago 8820808, Chile;
3.Univ Chile, Fac Vet Sci, Santiago 8820808, Chile
推荐引用方式
GB/T 7714
Orellana, Carla,Parraguez, Victor Hugo,Arana, Wilmer,et al. Use of Fecal Indices as a Non-Invasive Tool for Nutritional Evaluation in Extensive-Grazing Sheep[J],2020,10(1).
APA Orellana, Carla,Parraguez, Victor Hugo,Arana, Wilmer,Escanilla, Juan,Zavaleta, Carmen,&Castellaro, Giorgio.(2020).Use of Fecal Indices as a Non-Invasive Tool for Nutritional Evaluation in Extensive-Grazing Sheep.ANIMALS,10(1).
MLA Orellana, Carla,et al."Use of Fecal Indices as a Non-Invasive Tool for Nutritional Evaluation in Extensive-Grazing Sheep".ANIMALS 10.1(2020).
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