Larry D. Howery

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Wild and domestic ungulates modify their behaviour in the presence of olfactory and visual cues of predators but investigations have not exposed a domestic species to a series of cues representing various predators and other ungulate herbivores. We used wolf (Canis lupus), mountain lion (Puma concolor), and mule deer (Odocoileus hemionus) stimuli (olfactory(More)
We tested the hypothesis that cattle aided by visual cues would be more efficient than uncued animals in locating and consuming foods placed in either fixed or variable locations within a 0.64-ha experimental pasture. Eight yearling steers were randomly selected and trained to Ž . Ž . associate traffic barricades and traffic cones with highoat–barley(More)
A study was conducted in an eight-arm radial maze to determine if cattle with various foraging experiences could facilitate location of feeding sites by other cattle. Heifers assigned as ‘‘folŽ . lowers’’ ns24 were initially trained to expect straw at the end of each arm. Initial training of Ž . Ž . heifers assigned as ‘‘leaders’’ ns12 differed based on the(More)
Social learning can be of critical importance to cattle grazing rangeland environments with high variability of food resources across space and time. Experienced individuals can greatly facilitate foraging decisions (what to eat and where to eat) of naïve peers in such settings. We conducted an experiment with cattle to investigate strength and persistence(More)
Sweet resin bush (Euryops subcarnosus DC ssp. vulgaris B. Nord; or, Euryops multifidis (L. f.) DC.), a South African shrub introduced to Arizona in the 1930s, was discovered on the Santa Rita Experimental Range (SRER) in 1998. Due to the threat of spread of this invasive plant and its potential to cause adverse environmental and economic effects, and(More)
Wild and domestic ungulates modify their behaviour in the presence of olfactory and visual cues of predators but investigations have not exposed a domestic species to a series of cues representing various predators and other ungulate herbivores. We used wolf (Canis lupus), mountain lion (Puma concolor), and mule deer (Odocoileus hemionus) stimuli (olfactory(More)
This paper reviews the literature and reports on the current state of knowledge regarding the potential for managers to use visual (VC), auditory (AC) and olfactory (OC) cues to manage foraging behaviour and spatial distribution of rangeland livestock. We present evidence that free-ranging livestock use these sensory cues to make decisions about foraging,(More)
I am a professor and rangeland extension specialist in the SNRE. My appointment is 70% Extension and 30% Research. My job responsibilities involve developing and conducting a program of extension and research to promote the sustainable management of rangelands. My approach to extension and research has been programmatic, focused in the following 3 areas: 1)(More)
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