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Effects of number and siting of single-space feeders on performance and feeding behaviour of growing pigs

Published online by Cambridge University Press:  27 March 2009

A. T. S. Morrow  and
N. Walker
A. T. S. Morrow
Affiliation:
Agricultural Research Institute of Northern Ireland, Large Park, Hillsborough, Co Down BT26 6DR, UK
N. Walker
Affiliation:
Agricultural Research Institute of Northern Ireland, Large Park, Hillsborough, Co Down BT26 6DR, UK
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Summary

Two experiments of randomized block design were carried out at the Agricultural Research Institute of Northern Ireland in 1991/92 involving groups of 20 pigs fed ad libitum from single-space feeders with built-in water supply from 37 kg to slaughter at 91 kg liveweight.Treatments were replicated 16 and 6 times respectively in Experiments 1 and 2. In the first experiment, one feeder perpen was compared with two feeders per pen positioned side by side. Two feeders increased feed intake (P < 0·05) but had no significant effects on growth rate or feed conversion. With two feeders, the total time that feeders were occupied and the number of visits to feeders were both increased, while the number of enforced withdrawals from feeders and the amount of queuing were both decreased compared with the single feeder. In the second experiment, placing two feeders 2 m or more apart instead of side by side had no significant effects on feed intake or growth rate but improved feed conversion efficiency by 4%. This improvement was associated with fewer and longer visits to feeders but no difference in enforced withdrawals or queuing. In both experiments all treatments showed broadly similar patterns of diurnal feeding behaviour with two peaks of activity daily, a smaller peak pre-midday and a larger one in the afternoon. This pattern was influenced more by number of visits to feeders than by the mean duration of each visit. It is recommended that two single-space feeders are used in pens of 20 finishing pigs when non-pelleted diets are offered ad libitum and that feeders are sited some distance apart, not side by side.

Type
Animals
Information
The Journal of Agricultural Science , Volume 122 , Issue 3 , June 1994 , pp. 465 - 470
Copyright
Copyright © Cambridge University Press 1994

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