干旱区生态环境知识资源中心(Arid): Seasonal changes in feed intake, diet digestibility and diet composition by lactating and non-lactating goats browsing in a semi-arid rangeland of Argentina

Arid

DOI	10.1111/gfs.12393
	Seasonal changes in feed intake, diet digestibility and diet composition by lactating and non-lactating goats browsing in a semi-arid rangeland of Argentina
	Egea, Angela V.1,2; Bakker, Maria L.3; Allegretti, Liliana I.1,2,4; Paez, Sebastian A.2; Grilli, Diego J.1; Guevara, Juan C.2; Villalba, Juan J.5
通讯作者	Egea, Angela V.
来源期刊	GRASS AND FORAGE SCIENCE
ISSN	0142-5242
EISSN	1365-2494
出版年	2019
卷号	74 期号:1 页码:115-128
英文摘要	We determined the seasonal nutrient and secondary compound intake, in vivo diet digestibility (DD) and diet species composition of goats in different physiological states in a desert rangeland of Argentina. During the wet and the dry seasons, 24 mature female Creole goats (six non-lactating, non-pregnant and six lactating in each season) were used in a 2 x 2 factorial design. Diet botanical composition, DD and dry-matter intake (DMI) were estimated by the combined use of visual observation, microhistological analyses of faecal samples and n-alkane technique. Browse species dominated the goats' diets (>80%) in both seasons and physiological states, with a twofold increase in the proportion of forbs during the wet season (p 0.10). Lactating goats showed greater DMI than non-lactating animals, and they also displayed greater intakes of some tanniferous (Mimosa ephedroides) and high-protein (Atriplex lampa) shrubs (p < 0.10). Lactating and non-lactating goats selected diets with adequate crude protein (CP) and fibre content but insufficient energy, although lactating goats tended to increase energy and tannin content in their diets (p < 0.20). Physiological state did not influence DD, but digestibility was greater (p < 0.10) in the wet season, attributed to the greater protein content and lower tannin content of the diet. These results have important implications for managerial interventions on traditional goat production systems in the study area aiming at enhancing goat nutrition and welfare, as well as the sustainability of rangeland resources in the region.
英文关键词	diet composition feed intake goat grazing behavior nutrient tannin
类型	Article
语种	英语
国家	Argentina ; USA
收录类别	SCI-E
WOS记录号	WOS:000458443600013
WOS关键词	CENTRAL MONTE DESERT ; CONDENSED TANNINS ; N-ALKANES ; POLYETHYLENE-GLYCOL ; NUTRIENT CONTENT ; FORAGE INTAKE ; VARIED DIETS ; CREOLE GOATS ; SHEEP ; RUMINANTS
WOS类目	Agronomy
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216108
作者单位	1.Univ Juan Agustin Maza, Fac Ciencias Vet & Ambientales, Mendoza, Argentina; 2.Inst Argentino Invest Zonas Aridas IADIZA, Mendoza, Argentina; 3.Univ Nacl Ctr Prov Buenos Aires, Fac Ciencias Vet, Tandil, Argentina; 4.Univ Nacl Cuyo, Fac Ciencias Agr, Mendoza, Argentina; 5.Utah State Univ, Dept Wildland Resources, Logan, UT 84322 USA
推荐引用方式 GB/T 7714	Egea, Angela V.,Bakker, Maria L.,Allegretti, Liliana I.,et al. Seasonal changes in feed intake, diet digestibility and diet composition by lactating and non-lactating goats browsing in a semi-arid rangeland of Argentina[J],2019,74(1):115-128.
APA	Egea, Angela V..,Bakker, Maria L..,Allegretti, Liliana I..,Paez, Sebastian A..,Grilli, Diego J..,...&Villalba, Juan J..(2019).Seasonal changes in feed intake, diet digestibility and diet composition by lactating and non-lactating goats browsing in a semi-arid rangeland of Argentina.GRASS AND FORAGE SCIENCE,74(1),115-128.
MLA	Egea, Angela V.,et al."Seasonal changes in feed intake, diet digestibility and diet composition by lactating and non-lactating goats browsing in a semi-arid rangeland of Argentina".GRASS AND FORAGE SCIENCE 74.1(2019):115-128.