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  1. Food Preferences in Dogs: Effect of Dietary Composition and Intrinsic Variables on Diet Selection

    Full-text: Available

    | Contributor(s):: Raúl A. Alegría-Morán, Sergio A. Guzmán-Pino, Juan Ignacio Egaña, Carem Muñoz, Jaime Figueroa

    A ten-year food preference database (2007–2017) was used to relate food selection in dogs to the nutritional components of diets by doing a principal component analysis (PCA) and a linear regression between components obtained and dogs’ preferences. Intake and preference of...

  2. Using self-selection to evaluate the acceptance of a new diet formulation by farmed fish

    | Contributor(s):: Carlberg, H., Cheng, Ken, Lundh, T., Brannas, E.

    The evaluation of new diet composition is commonly achieved by performing time-consuming growth trials, which may negatively impact the welfare of a large number of fish if the feed is not accepted. Instead, the fish's behavioural responses to a new diet composition can be used as a first step in...

  3. A test of "nutritional wisdom" in perch ( Perca fluviatilis) by self-selection of encapsulated macronutrients

    | Contributor(s):: Brannas, E., Strand, A.

    Developing optimal diets based on fish macronutrient requirements is an expensive and laborious task requiring years of research. However, many species of fish can compose a species-specific optimal diet from single source macronutrients in capsules through self-selection. Eurasian perch is a...

  4. Experimental verification of the effects on normal domestic cats by feeding prescription diet for decreasing stress

    | Contributor(s):: Miyaji, K., Kato, M., Ohtani, N., Ohta, M.

    The objective of this study was to evaluate the effects of diet on the feline stress response by measuring plasma and urinary cortisol. A study diet was developed with a unique combination of nutrients that supports the management of stressful situations. The specific formulation of the diet...

  5. The Maillard reaction and pet food processing: effects on nutritive value and pet health

    | Contributor(s):: van Rooijen, Charlotte, Bosch, Guido, van der Poel, Antonius F. B., Wierenga, Peter A., Alexander, Lucille, Hendriks, Wouter H.

  6. Nutritional ecology of obesity: from humans to companion animals

    | Contributor(s):: Raubenheimer, D., Machovsky-Capuska, G. E., Gosby, A. K., Simpson, S.

    We apply nutritional geometry, a framework for modelling the interactive effects of nutrients on animals, to help understand the role of modern environments in the obesity pandemic. Evidence suggests that humans regulate the intake of protein energy (PE) more strongly than non-protein energy...

  7. The Waltham book of companion animal nutrition- a review

    | Contributor(s):: R. Glenn Brown

    Writing a text on nutrition that is both easy to read and informative is difficult. The subject has the potential to produce anesthesia in even the most conscientious reader. To understand the full scope of nutrition, it is necessary to review basic gastrointestinal physiology and metabolism, as...

  8. Using stable isotope analysis to quantify anthropogenic foraging in black bears

    | Contributor(s):: Merkle, J. A., Derbridge, J. J., Krausman, P. R.

  9. Critical impact assessment of organic agriculture

    | Contributor(s):: Xie, Biao, Wang, XiaoRong, Ding, ZhuHong, Yang, YaPing

    Based on its production guideline, organic agriculture has set for itself the goals of minimizing all forms of pollution and maintaining sustainability of the farming system. By striving for these goals, organic farming meets the demands of an increasing number of consumers who are critical of...

  10. Feeding behaviour of sheep on shrubs in response to contrasting herbaceous cover in rangelands dominated by Cytisus scoparius L

    | Contributor(s):: Pontes, L. da S., Agreil, C., Magda, D., Gleizes, B., Fritz, H.

    The foraging responses of ewes faced with a diversity of feed items and their effects on broom (Cytisus scoparius L.) consumption were examined. The experiment was conducted on a farm in the autumn with ewes (n=33) grazing three small paddocks (0.44 ha on average, for at least 10 days each)...

  11. Lambs fed protein or energy imbalanced diets forage in locations and on foods that rectify imbalances

    | Contributor(s):: Scott, L. L., Provenza, F. D.

    Ruminants eat a variety of foods from different locations in the environment. While water, cover, social interactions, and predators are all likely to influence choice of foraging location, differences in macronutrient content among forages may also cause ruminants to forage in different...

  12. Postingestive feedback from starch influences the ingestive behaviour of sheep consuming wheat straw

    | Contributor(s):: Villalba, J. J., Provenza, F. D.

    Plant species present a complex array of biochemicals to herbivores that in conjunction with a plant's physical structure influence intake. The role of postingestive feedback from macronutrients on the ingestion of a low-quality forage by sheep was investigated. The ingestive behaviour of 2...

  13. Does sward height affect feeding patch choice and voluntary intake in horses?

    | Contributor(s):: Edouard, N., Fleurance, G., Dumont, B., Baumont, R., Duncan, P.

    The numbers of horses grazing at pasture are increasing in developed countries, so a proper understanding of their feeding selectivity and of the tactics they use for extracting nutrients from swards is essential for the management of horses and grasslands. Resource acquisition in herbivores can...

  14. Exploiting flavour preferences of common marmosets to increase palatability of a dry pellet diet

    | Contributor(s):: Caldwell, C. A., Watson, C. F. E., Morris, K. D.

    Although commercially available complete diets exist for common marmosets, the animals' consumption of these diets (available in dry pellet form) is typically very low. Increasing consumption of the pellet diet could have positive consequences for the welfare of the marmosets as the pellets are...

  15. Uncertainties of nutrigenomics and their ethical meaning

    | Contributor(s):: Korthals, M., Komduur, R.

    Again and again utopian hopes are connected with the life sciences (no hunger, health for everyone; life without diseases, longevity), but simultaneously serious research shows uncertain, incoherent, and ambivalent results. It is unrealistic to expect that these uncertainties will disappear. We...

  16. Swimming, grazing and social behaviour of rohu Labeo rohita (Hamilton) and common carp Cyprinus carpio (L.) in tanks under fed and non-fed conditions

    | Contributor(s):: Rahman, M. M., Verdegem, M. C. J., Nagelkerke, L. A. J., Wahab, M. A., Verreth, J. A. J.

    Fish behaviour was monitored in 1-m2 tanks each stocked with three 67-g rohu (Labeo rohita). In addition, 80-g common carp (Cyprinus carpio) were stocked at 0, 1 or 2 fish per tank. All tanks were fertilized prior to stocking to stimulate natural food production. In addition, half of the tanks...

  17. Sequence of food presentation influences intake of foods containing tannins and terpenes

    | Contributor(s):: Mote, T. E., Villalba, J. J., Provenza, F. D.

    Interactions among nutrients and secondary compounds in plants can influence the kinds and amounts of different forages herbivores ingest, but little is known about how the sequence of plant ingestion may influence these interactions. The physiological pathways and rates of nutrient and secondary...

  18. An investigation into the causation of chewing behaviour in growing pigs: the role of exploration and feeding motivation

    | Contributor(s):: Day, J. E. L., Kyriazakis, I., Lawrence, A. B.

    Pigs, with a high or low level of feeding motivation, were allowed to chew an initially novel length of tubing which exuded a sucrose solution, a saccharin solution or water. A measure of exploratory activity was obtained by also providing each pig with an identical control-tube which exuded only...

  19. Foraging in a heterogeneous environment - an experimental study of the trade-off between intake rate and diet quality

    | Contributor(s):: Edouard, N., Duncan, P., Dumont, B., Baumont, R., Fleurance, G.

    Among the factors determining the choice of feeding sites by herbivores, the rate of intake of net energy and nutrients is a major one. For grazers, patches of tall grasses are ingested faster, but are digested less fully because of their high fibre contents; conversely, short grass is highly...

  20. Foraging mechanics and their outcomes for cattle grazing reproductive tropical swards

    | Contributor(s):: Benvenutti, M. A., Gordon, I. J., Poppi, D. P., Crowther, R., Spinks, W.

    For grazing animals an important determinant of animal performance is the rate of nutrient intake (RNI) which depends on diet quality and instantaneous intake rate (IIR). In turn, diet quality and IIR are the outcome of the interaction between the morphology and behaviour of the animal and the...