MATCHING INGESTIVE BEHAVIOUR OF GOATS TO LOCAL FEED RESOURCES
Abstract
This study was undertaken to find ways of reducing the time taken by goats tobegin to eat an edible feed that they have not previously encountered. Experiment 1demonstrated that the time taken for goats (7-8 months old) to ingest an unfamiliar feed(rice straw) was shorter (4 days) when it was first offered to them in the presence offamiliar positive cues (the odor or flavor of juices extracted from previously eaten,nutritionally beneficial grasses), than if it was offered in the absence of such cues (10 days).In contrast, when the feed was offered in the presence of the odor of parasitised goat feces,the time to first ingestion was extended to 20 days. Experiment 2 showed that when sixmonthold goats were exposed to feeds they had not experienced previously (rice straw orrice bran) they did not ingest these feeds in less than 7 days. However, they commencedingesting these feeds immediately if they had been exposed to them, prior to weaning, inthe presence of their mother or another adult goat. Application of the principles of feedingbehavior, as illustrated by the present studies, to goats in Vietnam may improve theirproduction, especially when diets are changed frequently and include both familiar andunfamiliar materials.Keywords: Behavior; Diet selection; Flavor; Neophobia; Social facilitation; Goat.References
Chapple, R. S., Wodzicka Tomaszewska, M. and Lynch, J. J., The learning behaviour
of sheep when introduced to wheat. 1. Wheat acceptance by sheep and the effect of
trough familiarit, Applied Animal Behaviour Science, No. 18, (1987), 157-162.
Corey, D. T., The determinants of exploration and neophobia, Neuroscience and
Behavioural Reviews, No. 2, (1978), 235-253.
Drewnowski, A. and Rock, C. L., The influence of genetic taste markers on food
acceptance, American Journal of Clinical Nutrition, No. 62, (1995), 506-511.
Launchbaugh, K. L., Provenza, F. D. and Werkmeister, M. J., Overcoming neophobia in
domestic ruminants through addition of a familiar flavor and repeated exposure to
novel foods, Applied Animal Behaviour Science, No. 54, (1997), 327-334.
Lobato, J. F.P., Pearce, G. R. and Beilharz, R. G., Effect of early familiarization with
dietary supplements on the subsequent ingestion of molasses-urea blocks by sheep,
Applied Animal Ethology, No. 6, (1980), 149-161.
Leon, M., Galef, B.G. Jr. and Behse, J.H., Establishment of pheromonal bonds and diet
choice in young rats by odor pre-exposure, Physiology and Behavior, No. 18, (1977),
-391.
Lynch, J. J., Keogh, R. G., Elwin, R. L., Green, G. C. and Mottershead, B. E., Effects of
early experience on the post-weaning acceptance of whole grain wheat by fine-wool
Merino lambs, Animal Production, No. 36, (1983), 175-183.
McDonald, C. L., Gittins, S. P. and Rowe, J. B. Effect of time of year and prior feeding
experience on feeding behaviour of sheep as if for live export, Proceedings of the
Australian Society of Animal Production, No. 17, (1988), 226-229.
Mirza, S. N. and Provenza, F. D. Preference of the mother affects selection and
avoidance of foods by lambs differing in age, Applied Animal Behaviour Science, No.
, (1990), 255-263.
Nicol, C. J. The social transmission of information and behaviour, Applied Animal
Behaviour Science, No. 44, (1995), 79-98.
Nolan, J. V., Hinch, G. N. and Lynch, J. J., Feeding behaviour and nutrient intake in
ruminants. Recent Advances in Animal Nutrition in Australia -1995, Ed. Rowe, J. B.
and Nolan, J. V, University of New England, Armidale NSW, (1995), 129-135.
Provenza, F. D. and Balph, D. F., Applicability of five diet-selection models to various
foraging challenges ruminants encounter. In: Behavioral mechanisms of food selection.
Ed. R. N. Hughes, NATO ASI Series, (1990), 424-459.
Provenza, F. D. , Role of learning in food preferences of ruminants: Greenhalgh and
Reid revisited, In "Ruminant Physiology: Digestion, Metabolism, Growth and
Reproduction, Proceedings VIII International Symposium on Ruminant Physiology"
(W. von Engelhardt, S. Leonhard-Marek, G. Breves, et al., eds.), Ferdinand Enke
Verlag, Stuttgart, Germany, (1996), 233-247.
Tien, D. V , Nolan, J. V, Lynch, J.J and Hinch, J. N., Grass odor and flavor overcome
feed nephobia in sheep, Small Ruminant Research, No. 32, (1999), 223-229, Elsevier
Science Ltd.