气候变化领域集成服务门户(CCPortal): Behavioural characteristics of yaks grazing summer and winter pastures on the Qinghai-Tibetan Plateau

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DOI	10.1016/j.applanim.2019.06.007
	Behavioural characteristics of yaks grazing summer and winter pastures on the Qinghai-Tibetan Plateau
	Liu, Peipei; Ding, Luming; Zhou, Yuqing; Jing, Xiaoping; Degen, A. Allan
通讯作者	Ding, LM (通讯作者)
发表日期	2019
ISSN	0168-1591
EISSN	1872-9045
卷号	218
英文摘要	The yak is the primary herbivore grazing on the Qinghai-Tibetan plateau, an area characterized by extremely harsh conditions and a very short vegetation growing season. Herbage quantity and quality peak in summer when it is lush and green, but is dry and withered in winter when it is scarce and of poor quality. Traditionally, yaks graze only natural pasture all year without supplements and have adapted well to the extreme winter conditions. Grazing behaviour has been used as an indicator for grazing management decisions and, in this study, was measured in five 4 to 8 years old yak cows suckling calves during summer and winter on the Qinghai-Tibetan plateau. The diurnal behavioural patterns were similar in the two seasons. Grazing time and jaw movements per hour increased at dawn (07:00), remained relatively steady and then decreased at dusk (19:00), whereas ruminations, mastications and boluses per hour exhibited an opposite trend and decreased at dawn, and then increased after dusk. Seasonally, with a decrease in herbage quality from summer to winter, yaks decreased grazing and ruminating times and walking distance (P < 0.05) and increased drinking and idling times (P < 0.05). Air temperature was the primary meteorological variable affecting yak behaviour and was correlated positively with grazing time, ruminating time, the rate of mastications while ruminating, boluses formed and mastications per bolus (P < 0.05). In addition, wind velocity and precipitation significantly influenced the grazing behaviour of yaks (P < 0.05). We concluded that both meteorological and forage conditions affected the grazing behaviour of yaks and that the general reduction in grazing activities in winter could have been a strategy to reduce exposure to the harsh conditions and, consequently, reduce energy expenditure for foraging and for thermoregulation.
关键词	BOS-GRUNNIENS HEAT-PRODUCTION RANGE COWS PATTERNS TEMPERATURE PERFORMANCE INGESTION RESPONSES GHRELIN WEATHER
英文关键词	Grazing yak; Behavioural characteristics; Pasture condition; Meteorological factors
语种	英语
WOS研究方向	Agriculture ; Behavioral Sciences ; Veterinary Sciences
WOS类目	Agriculture, Dairy & Animal Science ; Behavioral Sciences ; Veterinary Sciences
WOS记录号	WOS:000500193200006
来源期刊	APPLIED ANIMAL BEHAVIOUR SCIENCE
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259504
推荐引用方式 GB/T 7714	Liu, Peipei,Ding, Luming,Zhou, Yuqing,et al. Behavioural characteristics of yaks grazing summer and winter pastures on the Qinghai-Tibetan Plateau[J]. 中国科学院青藏高原研究所,2019,218.
APA	Liu, Peipei,Ding, Luming,Zhou, Yuqing,Jing, Xiaoping,&Degen, A. Allan.(2019).Behavioural characteristics of yaks grazing summer and winter pastures on the Qinghai-Tibetan Plateau.APPLIED ANIMAL BEHAVIOUR SCIENCE,218.
MLA	Liu, Peipei,et al."Behavioural characteristics of yaks grazing summer and winter pastures on the Qinghai-Tibetan Plateau".APPLIED ANIMAL BEHAVIOUR SCIENCE 218(2019).