干旱区生态环境知识资源中心(Arid): Effect of leaf type on browse selection by free-ranging goats in a southern African savanna

Arid

DOI	10.1371/journal.pone.0242231
	Effect of leaf type on browse selection by free-ranging goats in a southern African savanna
	Nyamukanza, Casper C.; Sebata, Allan
通讯作者	Nyamukanza, CC
来源期刊	PLOS ONE
ISSN	1932-6203
出版年	2020
卷号	15 期号:11
英文摘要	Broad- and fine-leaved woody species respond to seasonal changes from wet to dry season differently. For example, broad-leaved species shed their leaves earlier, while fine-leaved species, especially acacias retain green foliage well into the dry season. These differences are expected to result in variation in selection of broad- and fine-leaved woody species as browse by free-ranging goats. We tested the hypothesis that free-ranging goats select broad-leaved woody species more than fine-leaved species during wet (growth) season and fine-leaved woody species more than broad-leaved species during dry season. In addition, we tested if broad- and fine-leaved woody species had different foliar dry matter digestibility and chemical composition (crude protein, neutral detergent fibre, acid detergent fibre, total phenolics and condensed tannins concentration). Free-ranging goats were observed foraging on broad- and fine-leaved woody species over a two-year period (2014 and 2015) during three seasons: early wet (October/November), late wet (February/March) and dry (May/June). Ivlev's selectivity or Jacob's index (E-i) was calculated for five woody species (two broad-leaved and three fine-leaved) browsed by goats during wet and dry season. Jacob's selectivity index was higher for broad-leaved (Ziziphus mucronata and Searsia (Rhus) tenuinervis) than fine-leaved woody species (Acacia nilotica, Acacia karroo and Dichrostachys cinerea) during wet season. However, the trend was reversed during dry season with fine-leaved species having higher Jacob's selectivity index than broad-leaved species. Leaf dry matter digestibility and chemical composition was similar between broad- and fine-leaved woody species throughout the year. We conclude that goats selected broad-leaved woody species during wet season when browse was plentiful and then switched to fine-leaved species which retained leaves during dry season.
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000593946900039
WOS关键词	DIET SELECTION ; SEMIARID SAVANNA ; SMALL RUMINANTS ; INTAKE RATES ; NGUNI GOATS ; BEHAVIOR ; DESERT ; SEASON ; FIBER ; DIGESTIBILITY
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327738
作者单位	[Nyamukanza, Casper C.] Midlands State Univ, Dept Anim & Wildlife Sci, Gweru, Zimbabwe; [Sebata, Allan] Natl Univ Sci & Technol, Dept Forest Resources & Wildlife Management, Bulawayo, Zimbabwe
推荐引用方式 GB/T 7714	Nyamukanza, Casper C.,Sebata, Allan. Effect of leaf type on browse selection by free-ranging goats in a southern African savanna[J],2020,15(11).
APA	Nyamukanza, Casper C.,&Sebata, Allan.(2020).Effect of leaf type on browse selection by free-ranging goats in a southern African savanna.PLOS ONE,15(11).
MLA	Nyamukanza, Casper C.,et al."Effect of leaf type on browse selection by free-ranging goats in a southern African savanna".PLOS ONE 15.11(2020).