Linking herbivore experience, varied diets, and plant biochemical diversity

Provenza, Frederick D.; Villalba, Juan J.; Dziba, Luthando; Atwood, Sheldon B.; Banner, Roger E.

doi:10.1016/s0921-4488(03)00143-3

Cited by 447 publications

(389 citation statements)

References 118 publications

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“…Mote et al, 2008), that it would be useful to develop rangeland management practices meant to improve livestock's acceptance and preference of low-nutritious foods that animals commonly reject. Increasing dietary breath might alleviate the persistent selection pressure that animals exert over plant species of higher nutritional quality, thus reducing undesirable changes in the botanical composition of pasturelands (Milchunas et al, 1988;O' Connor, 1991;Provenza et al, 2003). The study of intake induction in livestock species may help in achieving such an applied end, and this paper is a step in that direction.…”

Section: Practical Implicationsmentioning

confidence: 99%

“…Nonetheless, the interaction of foodstuffs at different levels in the experience of the animal affects food intake and choice beyond the intrinsic properties of foods (Flaherty, 1996;Provenza et al, 2003). For instance, the specific array of plants encountered and the sequence of encounters could turn out to be crucial in -E-mail: efreidin@criba.edu.ar, efreidin@yahoo.com determining nutritional consequences, as well as the level of consumption of each species in ruminants (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Induction of low-nutritious food intake by subsequent nutrient supplementation in sheep (Ovis aries)

Freidin

Catanese

Cuello

et al. 2012

Animal

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Acceptance of and preference for a particular food depends not only on its intrinsic (e.g. nutritional) properties but also on expected or recent food experiences. An instance of this type of phenomenon has been called induction effect, which consists of an increased intake of a type of food when it precedes a hedonically preferred food in a sequence familiar to the animal, relative to controls that have access only to the less-preferred food. The purpose of our study was to assess intake induction of a low-nutritious food when followed by different high-nutritious supplements in sheep (Ovis aries). In this experiment, we ran a supplemented phase where animals fed oat hay (a low-nutritious food) in the first part of the daily feeding sessions followed by a supplement with either a high (soya bean meal; group GS) or a low (ground corn; group GC) protein-energy ratio in the second part ate more oat hay than controls that were fed oat hay in both parts of sessions (group GH). In addition, supplemented animals presented a stronger preference for oat hay over alfalfa hay than controls in a subsequent choice. When all animals received no food in the second part of the sessions (Non-supplemented phase), intake of oat hay converged to the control's intake level in all the groups, suggesting that the presence of supplements after access to oat hay was responsible for intake induction. Lastly, we repeated the supplemented phase with a different control group where animals received oat hay in the first part of the sessions and no food in the second part (group NF), thus equalizing groups in terms of the time of access to oat hay in a session. Groups GS and GC still developed higher intake of oat hay than group NF. In both supplemented phases of the experiment, we estimated animals' daily metabolizable energy (ME) and crude protein (CP) intake. CP intake was higher in group GS than in groups GC, GH and NF, but there was no difference between group GC and the controls. In turn, groups did not differ in ME intake in the First supplemented phase, and only group GS presented higher ME intake than the rest of the groups in the Second supplemented phase. Therefore, a nutritional account of the present induction effect seems insufficient. We propose that a learned association between oat hay and the post-ingestive feedback from the subsequent high-nutritious supplements underlay sheep's intake induction and increased preference for oat hay.

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Section: Practical Implicationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Induction of low-nutritious food intake by subsequent nutrient supplementation in sheep (Ovis aries)

Freidin

Catanese

Cuello

et al. 2012

Animal

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“…Direct observations of intake dynamics during a meal and during the grazing down of paddocks suggest that feeding choices on rangeland might be driven by the objective of stabilizing intake rather than maximizing it (Agreil et al, 2005). As a secondary objective, ruminants might also choose to mix feeds in order to optimize their intake of nutrients and to neutralize toxins (Provenza et al, 2003).…”

Section: Animal and Herd Behaviour In Mediterranean Rangelandsmentioning

confidence: 99%

“…When herbivores are confronted with a diversity of plants differing in their nutrient and toxin content, they need to learn how to mix their diet in order to avoid aversive effects. In the context of mixed diets, aversive effects may be modified by nutrient-nutrient, toxin-nutrient and toxin-toxin interactions, and herbivores may optimize their intake of nutrients and toxins on the basis of their experience of the mix of foods offered (see reviews of Provenza, 1996;Provenza et al, 2003). The social environment in a group of foraging animals enhances the learning efficiency in such complex situations because each animal no longer needs to discover everything by itself (Provenza, 2007).…”

Section: Animal and Herd Behaviour In Mediterranean Rangelandsmentioning

confidence: 99%

Rangeland utilization in Mediterranean farming systems

Jouven

Lapeyronie

Moulin

et al. 2010

Animal

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In the countries surrounding the Mediterranean basin, most of the semi-natural grazing lands are covered by rangelands. Rangelands can be defined as highly heterogeneous natural vegetation communities with high conservation value, growing in harsh environments (poor soils, unfavourable climatic conditions). In the recent socio-economic context, traditional livestock grazing practices that enabled one to reconcile rangeland preservation and animal production no longer apply, especially because they require labour that has become scarce and costly. The consequence is rangeland degradation, due to underutilization in Southern Europe, and overutilization in Northern Africa. We analysed issues raised by rangeland utilization in livestock farming systems of the Mediterranean basin. Based on a review of the scientific literature about rangeland utilization in this area, we argue that the best way to reconcile animal production and rangeland preservation would be to promote management practices allowing animals to express their adaptative capacities in feeding behaviour and productive response. In order to propose management practices adapted to extensive and simplified systems, we conclude that research efforts should focus on: (i) proposing a functional characterization of vegetation heterogeneity at the scale of the vegetation community, (ii) validating the criteria determining animals' foraging behaviour on Mediterranean rangelands, (iii) developing and using simulation models to test management strategies against seasonal and long-term variability in climatic conditions and (iv) evaluating the potential of modern technologies for improving rangeland utilization.

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“…This is particularly true because the ethical and legal landscape favors the use of repellents rather than toxicants; while animals are physiologically limited in their ability to ingest toxicants, the same is not true for repellents (Provenza et al, 2003). For example, if a particular chemical repellent was applied in a few areas, it should be effective in deterring animals from causing damage.…”

Section: Introductionmentioning

confidence: 99%

Influence of the number of repellent-treated and untreated food or water containers on intake by the European starling

Hile¹,

Tordoff²

2005

Appetite

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The availability of multiple sources of food and drink has a profound influence on choice behavior in rodents. It is not known how other taxa might respond to the same kind of variation in availability. We tested European starlings (Sturnus vulgaris) with various combinations of unadulterated and repellent-treated (0.025% citronellyl acetate) resources. In Experiment 1, birds drank more plain than repellent-treated water than when given (a) 2 bottles of plain water and 2 of repellent-water, or (b) 3 bottles of plain water and 1 of repellent-water. However, they drank more repellent than water when given 3 bottles of repellent-water and 1 of plain water. Thus, the aversion to the repellent became indifference when repellent-water was abundant. In Experiment 2, birds ate more untreated than treated food when given (a) 1 cup of untreated food and 1 cup of treated food or (b) 2 cups of untreated food and 1 of treated food. They ate equal amounts of untreated and treated food when given 1 cup of untreated food and 2 cups of treated food. These results demonstrate the effect of relative availability on choice, and imply that availability should be considered when using repellents. Published by Elsevier Ltd.

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Linking herbivore experience, varied diets, and plant biochemical diversity

Cited by 447 publications

References 118 publications

Induction of low-nutritious food intake by subsequent nutrient supplementation in sheep (Ovis aries)

Induction of low-nutritious food intake by subsequent nutrient supplementation in sheep (Ovis aries)

Rangeland utilization in Mediterranean farming systems

Influence of the number of repellent-treated and untreated food or water containers on intake by the European starling

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