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  1. On-Farm Evaluation of an Automatic Enrichment Device with Maize Silage for Laying Hens

    Contributor(s):: Giersberg, Mona Franziska, Kemper, Nicole, Spindler, Birgit

    Challenges in alternative housing for laying hens are barren functional areas such as winter gardens and the occurrence of behavioral disorders. Environmental enrichment is a measure to deal with these problems. Therefore, an enrichment device offering maize silage automatically was tested in two...

  2. Sward botanical composition and sward quality affect the foraging behaviour of free-range laying hens

    Contributor(s):: Breitsameter, Laura, Gauly, Matthias, Isselstein, Johannes

    In a two-year experiment, we investigated the influence of sward plant species composition (sward type), stocking duration and state of sward degradation on the foraging behaviour of chickens. Laying hens (ISA Warren) were pastured on 15 sward types including 14 monocultures of grassland plant...

  3. Influence of diet sequence on intake of foods containing ergotamine d tartrate, tannins and saponins by sheep

    Contributor(s):: Jensen, Tiffanny Lyman, Provenza, Frederick D., Villalba, Juan J.

    Plant secondary compounds (SCs) play crucial roles in plant survival and defense against herbivores and in appropriate amounts SCs provide health and nutritional benefits to herbivores. The presence of SCs in plants is important, and means need to be found to enhance their benefits while...

  4. First links between self-feeding behaviour and personality traits in European seabass, Dicentrarchus labrax

    Contributor(s):: Ferrari, Sébastien, Benhaïm, David, Colchen, Tatiana, Chatain, Béatrice, Bégout, Marie-Laure

    Most studies carried out with seabass under self-feeding conditions report an intriguing social structure that is built around the device and the food dispenser with three coexisting triggering categories: high-triggering (HT), low-triggering (LT) and zero-triggering (ZT) fish. However, neither...

  5. Efficacy of foraging enrichments to increase foraging time in Grey parrots (Psittacus erithacus erithacus)

    Contributor(s):: van Zeeland, Yvonne R. A., Schoemaker, Nico J., Ravesteijn, Manon M., Mol, Marjon, Lumeij, Johannes T.

    Foraging enrichment is considered one of the most effective strategies to improve welfare and reduce stereotypies and other abnormal repetitive behaviours in captive animals, including parrots. Few studies, however, have investigated the effects of the different types of enrichment and determined...

  6. Additional foraging elements reduce abnormal behaviour – fur-chewing and stereotypic behaviour – in farmed mink (Neovison vison)

    Contributor(s):: Malmkvist, Jens, Palme, Rupert, Svendsen, Pernille M., Hansen, Steffen W.

    We investigated whether provision of additional appetitive and consummatory elements of foraging reduces baseline stress and abnormal behaviour – in terms of fur-chewing and stereotypic behaviour – in farmed mink. We studied 200 juveniles (n=100 females and 100 males) during the 5-month growth...

  7. Preference and motivation for different diet forms and their effect on motivation for a foraging enrichment in captive Orange-winged Amazon parrots (Amazona amazonica)

    Contributor(s):: Rozek, Jessica C., Millam, James R.

    Motivation tests were conducted to assess preference strength for diet form and a cage enrichment device by Orange-winged Amazon parrots (Amazona amazonica) held in individual cages, N=10. Each cage was equipped with two trough-type feeders, one of which had a hinged lid that required lifting to...

  8. Introduction of gum Arabic and guar to the diet of captive black-tufted ear marmosets

    Contributor(s):: Pupe, Rafael, Tavares, Maria Clotilde Henriques, Barros, Marilia

    Gum plays a significant role in the feeding ecology of wild callitrichids and thus is also supplemented to several primate species in captivity. However, little is known about the feeding habits of black tufted-ear marmosets (including gummivory), in both wild and captive populations. Therefore,...

  9. Equine ingestion of haylage harvested at different plant maturity stages

    Contributor(s):: Müller, Cecilia E.

    The influence of plant maturity at harvest of haylage on equine ingestion times and ingestive behaviour was studied. Haylage was harvested at three different occasions: June, July and August, from the primary growth of the same grass-dominated sward. Twelve adult horses of European warmblood type...

  10. Foraging Performance, Prosociality, and Kin Presence Do Not Predict Lifetime Reproductive Success in Batek Hunter-Gatherers

    Contributor(s):: Kraft, Thomas S., Venkataraman, Vivek V., Tacey, Ivan, Dominy, Nathaniel J., Endicott, Kirk M.

  11. Foraging performance, prosociality, and kin presence do not predict lifetime reproductive success in batek hunter-gatherers

    Contributor(s):: Kraft, Thomas S., Venkataraman, Vivek V., Tacey, Ivan, Dominy, Nathaniel J., Endicott, Kirk M.

  12. The interplay between exposure and preference for unpalatable foods by lambs

    Contributor(s):: Villalba, Juan, Spackman, Casey, Lobón, Sandra

    Herbivores satiate on single foods ingested too frequently or in excess. We hypothesized that exposure to the same unpalatable food too frequently or in excess causes satiety, which in turn would reduce subsequent use and preference for this food when alternatives become available. In each of...

  13. Monitoring the effects of feeding in groups: Behavioural trials in farmed elk in winter

    Contributor(s):: Moreira, Adam, McLaren, Brian

    We studied the effect of managing group size in domesticated elk in the context of social foraging theory, and toward recommendations for livestock well-being and efficient use of common pastures. We compared foraging in adult female elk presented with feeding trays of alfalfa pellets mixed with...

  14. Decision-making of goats when exposed to choice feeding: Triggered by taste or smell?

    Contributor(s):: Scherer, R., Gerlach, K., Südekum, K. H.

    Animals recognise known forages. However, it is unclear whether recognition is mainly based on sensory characteristics linked to postingestive feedback or whether the latter is activated each time before a choice is made. Moreover, knowledge is scarce regarding the duration of the memory process...

  15. Some like it varied: Individual differences in preference for feed variety in dairy heifers

    Contributor(s):: Meagher, Rebecca K., Weary, Daniel M., von Keyserlingk, Marina A. G.

    Motivation to explore is believed to be widespread among animals, but exploratory behaviour varies within populations. Offering variety in feed is one simple way of allowing intensively housed dairy cattle to express exploratory foraging behaviour. Individuals’ exploration of different feed...

  16. Behavioral patterns of (co-)grazing cattle and sheep on swards differing in plant diversity

    Contributor(s):: Cuchillo Hilario, Mario, Wrage-Mönnig, Nicole, Isselstein, Johannes

    Both botanical composition and the presence of additional grazer species may modify the grazing efficiency and ingestive behavior of ruminants. However, at present, potential effects of interactions between sward diversity and presence of multiple animal species on the grazing behavior of cattle...

  17. Feeding, foraging, and feather pecking behaviours in precision-fed and skip-a-day-fed broiler breeder pullets

    Contributor(s):: Girard, Ms Teryn E., Zuidhof, Martin J., Bench, Clover J.

    Broiler breeder chickens are feed-restricted to control growth and maximize chick production. Feed restriction creates welfare concerns as conventional skip-a-day feeding can increase activity levels and oral stereotypies during the rearing period. A precision feeding system has been developed to...

  18. Mother-offspring relationship in Morada Nova sheep bred in a tropical semiarid environment: A perspective on maternal investment and parental conflict

    Contributor(s):: Fonsêca, Vinícius F. C., Saraiva, Edilson P., Arruda, Maria F., Pereira, Walter E., Pimenta Filho, Edgard C., Santos, Severino G. C. G., Amorim, Mikael L. C. M., Silva, Josinaldo A.

    In 2011 and 2012, we investigated the mother-offspring relationship in 60 Morada Nova ewe-lamb pairs from lambing (August) until 40 d after lambing. In years 1 and 2, there were 28 and 32 multiparous ewes, 13 and 20 single male lambs, and 15 and 12 twin male lambs, respectively. The behavior of...

  19. Nutritional state and secondary compounds influence trembling aspen (Populus tremuloides) intake by lambs

    Contributor(s):: Heroy, Kristen Y., St. Clair, Samuel B., Burritt, Elizabeth A., Durham, Susan L., Villalba, Juan J.

    The foraging ecology of mammalian herbivores is determined by plant secondary compounds (PSC) that defend plants against herbivory, by nutrients that are required for maintenance, growth, and reproduction, and by the interaction between these variables. In this study, we explored the influence of...

  20. Effects of guest feeding programs on captive giraffe behavior

    Contributor(s):: Orban, D. A., Siegford, J. M., Snider, R. J.

    Zoological institutions develop human-animal interaction opportunities for visitors to advance missions of conservation, education, and recreation; however, the animal welfare implications largely have yet to be evaluated. This behavioral study was the first to quantify impacts of guest feeding...