Grazing behavior of lactating and non-lactating yaks in the summer season of the Qinghai-Tibetan plateau

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	Grazing behavior of lactating and non-lactating yaks in the summer season of the Qinghai-Tibetan plateau
	Ding, Luming ; Long, Ruijun ; Wang, Changting ; Shang, Zhanhuan
	2006
发表期刊	ISRAEL JOURNAL OF ECOLOGY & EVOLUTION ; Ding Luming,Long Ruijun,Wang Changting, Shang Zhanhuan.Grazing behavior of lactating and non-lactating yaks in the summer season of the Qinghai-Tibetan plateau.ISRAEL JOURNAL OF ECOLOGY & EVOLUTION,2006,52(2):141-149
摘要	The effect of the physiological states of lactating vs. non-lactating (dry) on grazing behavior and herbage intake by yaks was examined in the summer season in the Qinghai alpine area under continuous stocking management. Intake rates were estimated over periods of 1 h by weighing the animals before and after grazing, retaining the feces and urine excreted, and applying a correction for insensible weight loss (the 1-h weight changes of yaks when non-eating before or after the intake rate measurement). It is hypothesized that the lactating yaks should eat more and spend more time eating than nonlactating yaks, because they expend more energy. In our experiment, there were no differences in the effect of physiological state (lactating vs. dry) of yaks observed on the rate of insensible weight loss, intake rate, grazing jaw movement rate, bites per grazing jaw movement, or bite mass. The dry yaks tended to eat more and spend more time eating than lactating yaks, but not significantly so. Compared with the dry yaks, the lactating yaks had a significantly lower bite rate and bites per bolus.; The effect of the physiological states of lactating vs. non-lactating (dry) on grazing behavior and herbage intake by yaks was examined in the summer season in the Qinghai alpine area under continuous stocking management. Intake rates were estimated over periods of 1 h by weighing the animals before and after grazing, retaining the feces and urine excreted, and applying a correction for insensible weight loss (the 1-h weight changes of yaks when non-eating before or after the intake rate measurement). It is hypothesized that the lactating yaks should eat more and spend more time eating than nonlactating yaks, because they expend more energy. In our experiment, there were no differences in the effect of physiological state (lactating vs. dry) of yaks observed on the rate of insensible weight loss, intake rate, grazing jaw movement rate, bites per grazing jaw movement, or bite mass. The dry yaks tended to eat more and spend more time eating than lactating yaks, but not significantly so. Compared with the dry yaks, the lactating yaks had a significantly lower bite rate and bites per bolus.
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/55825
专题	中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Ding, Luming,Long, Ruijun,Wang, Changting,et al. Grazing behavior of lactating and non-lactating yaks in the summer season of the Qinghai-Tibetan plateau[J]. ISRAEL JOURNAL OF ECOLOGY & EVOLUTION, Ding Luming,Long Ruijun,Wang Changting, Shang Zhanhuan.Grazing behavior of lactating and non-lactating yaks in the summer season of the Qinghai-Tibetan plateau.ISRAEL JOURNAL OF ECOLOGY & EVOLUTION,2006,52(2):141-149,2006.
APA	Ding, Luming,Long, Ruijun,Wang, Changting,&Shang, Zhanhuan.(2006).Grazing behavior of lactating and non-lactating yaks in the summer season of the Qinghai-Tibetan plateau.ISRAEL JOURNAL OF ECOLOGY & EVOLUTION.
MLA	Ding, Luming,et al."Grazing behavior of lactating and non-lactating yaks in the summer season of the Qinghai-Tibetan plateau".ISRAEL JOURNAL OF ECOLOGY & EVOLUTION (2006).