干旱区生态环境知识资源中心(Arid): Resting and field metabolic rates of Awassi sheep and Baladi goats raised by Negev bedouin

Arid

DOI	10.1017/S0021859620000726
	Resting and field metabolic rates of Awassi sheep and Baladi goats raised by Negev bedouin
	Kam, Michael; El-Meccawi, Shaher; Brosh, Arieh; Degen, A. Allan
通讯作者	Degen, AA
来源期刊	JOURNAL OF AGRICULTURAL SCIENCE
ISSN	0021-8596
EISSN	1469-5146
出版年	2020
卷号	158 期号:5 页码:431-437
英文摘要	Sheep are grazers and goats are intermediate feeders. By employing O-2 consumption and heart rate measurements, resting metabolic rate (RMR) and field metabolic rate (FMR) were determined in four male fat-tailed Awassi sheep (44.0 +/- 3.94) and four male Baladi goats (35.5 +/- 5.42 kg) that were co-grazing natural pasture in the Negev Desert. There were 67.7 +/- 3.75 g DM/m(2) of herbaceous vegetation biomass, which was rapidly becoming senescent and more fibrous. We hypothesized that FMR of these desert-adapted ruminants would be relatively low when compared to other sheep and goat breeds, as animals in arid areas tend to have low metabolic rates. Both sheep (n = 6) and goats (n = 6) foraged 71% of the allotted 11 h free-pasture period; however, sheep grazed more than goats (P < 0.001); whereas goats browsed more than sheep (P < 0.001). RMR was higher (P = 0.007) in sheep than in goats (529 +/- 23.5 v. 474 +/- 25.4 kJ/kg(0.75) BW/d), but FMR did not differ between species (618 +/- 55.7 v. 613 +/- 115.2 kJ/kg(0.75) BW/d). In addition, the cost of activities, as a proportion of FMR, did not differ between sheep and goats; FMR increased by 89 kJ/kg(0.75) BW/d or 17% in sheep and by 138 kJ/kg(0.75) BW/d or 29% in goats. In comparing FMRs of sheep and goats in this study with these species in other studies, differences were inconsistent and, therefore, our hypothesis was not supported.
英文关键词	Field metabolic rate goats heart rate resting metabolic rate sheep
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000599904000007
WOS关键词	HEART-RATE MEASUREMENTS ; ENERGY-EXPENDITURE ; RUMINANTS ; PASTURES ; BEHAVIOR ; SELECTION ; CATTLE ; DRY ; DIVERSIFICATION ; LOCOMOTION
WOS类目	Agriculture, Multidisciplinary
WOS研究方向	Agriculture
来源机构	Ben-Gurion University of the Negev
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327907
作者单位	[Kam, Michael; Degen, A. Allan] Ben Gurion Univ Negev, Jacob Blaustein Inst Desert Res, Desert Anim Adaptat & Husb, Wyler Dept Dryland Agr, IL-84105 Beer Sheva, Israel; [El-Meccawi, Shaher] Achva Acad Coll, IL-79800 Mb Shikmim, Israel; [Brosh, Arieh] Agr Res Org, Newe Yaar Res Ctr, Beef Cattle Sect, POB 1021, IL-50250 Bet Dagan, Israel
推荐引用方式 GB/T 7714	Kam, Michael,El-Meccawi, Shaher,Brosh, Arieh,et al. Resting and field metabolic rates of Awassi sheep and Baladi goats raised by Negev bedouin[J]. Ben-Gurion University of the Negev,2020,158(5):431-437.
APA	Kam, Michael,El-Meccawi, Shaher,Brosh, Arieh,&Degen, A. Allan.(2020).Resting and field metabolic rates of Awassi sheep and Baladi goats raised by Negev bedouin.JOURNAL OF AGRICULTURAL SCIENCE,158(5),431-437.
MLA	Kam, Michael,et al."Resting and field metabolic rates of Awassi sheep and Baladi goats raised by Negev bedouin".JOURNAL OF AGRICULTURAL SCIENCE 158.5(2020):431-437.