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  1. Lithium residue in milk from doses used to condition taste aversions and effects on nursing calves

    Contributor(s):: Ralphs, M. H.

    In the 1st trial, 3 lactating Hereford cows with calves 4-7 months of age were gavaged with lithium chloride at 100, 150 and 200 mg/kg liveweight. Milk yield and lithium concentration in blood serum and milk were measured at intervals up to 96 h after treatment. Milk yield decreased by 20% the...

  2. Conditioned taste aversions: how sick must a ruminant get before it learns about toxicity in foods?

    Contributor(s):: Toit, J. T. du, Provenza, F. D., Nastis, A.

    To determine if the food-avoidance learning abilities of large herbivores are as poorly developed as has previously been assumed, the relationship was investigated between the acquisition of a conditioned taste aversion (CTA) by sheep and the dose of gastrointestinal poison (LiCl) administered...

  3. Disorders in the feeding behaviour of fattening bulls

    Contributor(s):: Sambraus, H. H.

    For labour-saving reasons, fattening bulls in West Germany are commonly housed on slatted floors and fed only on maize silage and concentrates. Bulls kept under these conditions quite frequently show disturbances associated with feeding behaviour. In four fattening-bull enterprises 2 of the...

  4. "Poison-shyness" and "bait-shyness" developed by wild rats ( Rattus rattus L.). I. Methods for eliminating "shyness" caused by barium carbonate poisoning

    Contributor(s):: Naheed, G., Khan, J. A.

    Colonies of wild rats, were offered the choice between two baits-cereal grains, flours, mixtures, oily and sweet cereals, and also grain flour. The rats were poisoned in the preferred baits with barium carbonate (10 mg/g food; 20 mg/g food in oily baits) and then presented with the same choice of...

  5. Maternal locoweed exposure in utero and as a neonate does not disrupt taste aversion learning in lambs

    Contributor(s):: Pfister, J. A., Astorga, J. B., Panter, K. E., Molyneux, R. J.

    Taste aversion learning has been suggested as a sensitive measure of behavioural toxicosis. The purpose of this study was to determine if maternal locowood ingestion would adversely influence the ability of lambs to acquire and retain a conditioned taste aversion (CTA). Pregnant and lactating...

  6. Potential of three rodenticides to induce conditioned aversion to their baits in the Indian mole rat, Bandicota bengalensis

    Contributor(s):: Parshad, V. R., Kochar, J. K.

  7. Selective grazing behaviour in horses: development of methodology and preliminary use of tests to measure individual grazing ability

    Contributor(s):: Marinier, S. L., Alexander, A. J.

    The selective grazing behaviour of 5 plant species measured by the "two-hand" method by 12 horses of various breeds 1.5 to 18 years old was investigated. Results were analysed in relation to 5 measures of choosing behaviour: the strength of the choice; correspondence between first bite and the...

  8. Socially induced diet preference ameliorates conditioned food aversion in lambs

    Contributor(s):: Provenza, F. D., Burritt, E. A.

    To determine whether a socially induced diet preference could ameliorate a conditioned food aversion in lambs one group was conditioned to avoid the shrub Cercocarpus montanus by giving them lithium chloride, a toxin that produces strong food aversions, following shrub ingestion. On day 1 of...