Co-Authors:
Ilan, D., Agricultural Research Organization, Newe Ya'ar Regional Experiment Station, Israel
Levy, D., Agricultural Research Organization, Newe Ya'ar Regional Experiment Station, Israel
Holzer, Z., Agricultural Research Organization, Newe Ya'ar Regional Experiment Station, Israel
Abstract:
The effects of two levels of roughage (18 or 40%), of DES implantation (36 mg, twice), and of the addition of adjoining dirt yards to pens with concrete slatted floors, on the behaviour of intact male calves, were examined in a 2 x 2 x 2 factorial experiment. Observations were carried out on four days, every 15 min for 24 hr. Activities recorded were: standing, lying, eating, drinking, ruminating, jumping and idling. Animals on the high roughage diet spent 26% more time eating, 5% more time drinking, and 19% more time ruminating, than those on the low roughage diet. Most of the rumination was performed while the animals were lying down. Animals allowed yards adjoining their pens spent 20% less time ruminating and 13% more time jumping than animals confined to pens alone. Those allowed the yard preferred to stand there and to lie down in the pen. The yards were used more on a cool day than on a hot day. © 1973, British Society of Animal Science. All rights reserved.