牛をフィードステーションに誘導することによる排泄場所の制御

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  • Defecation control through inducement of cattle movement to a feeding station

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Abstract

This study evaluated the possibility of decreasing defecation in a bedding area by inducing a heifer to visit a feeding station within a few minutes or immediately after standing. An experimental paddock (11.3 x 6 .8m) was made outdoors. Half of the paddock was roofed and bedded with straw to form a resting area. A feeding station was situated in the remaining area of the paddock，which was designated as the feeding area. Six Holstein heifers，the test subjects，were grouped together in the paddock. A standing detection device was developed and attached to the heifer's left hind leg. The feeding station had an antenna that identified the heifer carrying the ID-tag when it entered the station. This experiment included control period and an experimental period. The feeding station was closed during the control period. During the experimental period，the heifers were allowed to obtain the concentrate when they visited the feeding station within a limited time (60min，30min，10min，5min) after standing. Instances of defecation in the bedding area were counted in the morning and in the evening before cleaning. This study verified the possibility that the average number of instances of defecation in the bedding area decreased significantly (pく0.01) to 12.5±6.4 during the experimental period from average defecations in the bedding area were 23.5±t7.8 during the control period. We conclude that inducing the heifer to visit the feeding station within a few minutes after standing decreases defecation in the bedding area.

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