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Performance of Gilts and Castrates when fed separately on Two Different Levels of Feeding

K. K. KUAN and T. K. MAK

Pertanika Journal of Tropical Agricultural Science, Volume 5, Issue 1, July 1982

Keywords: Castrates; Gilts; Performance; adlibitum; Restricted feeding and Carcass characteristics.

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Twenty castrated male pigs and twenty gilts initially averaging 52 kg were fed individually so thatthat performance and carcass qualityty of pigs fed on a scale based on ad libitum feed in g could be compared to those fed on a restricted regime under local environmen talconditions. Pigs fe d on a scale based on ad libitum feed in g showed a significantly faster growth rate and had more back fat compared to pigs on restricted feeding. For each 1% o f fe e d restriction there was a corresponding 1 reduction in average daily gain and 0.917c reduction in average b a c k fa t thickness. Gilts e xcelled over castrates in p erformance and carcass q u a lity ; the fo rm e r grew faster, were more efjicient in feed utilization and p ro d u c ed carcasses with less b a c k fa t and larger loin eye area compared to the latter. The digestible energy intake of pigs was less than animal’s o f similar live weight in temperate environments. In order to improve e ffic ien cyof production , it is suggested th a t castrates and gilts be fed separately during the finishing stage with the castrates subjected to a more severe level of feed restriction in order to limit fa t d eposition.

ISSN 1511-3701

e-ISSN 2231-8542

Article ID

PERT-0122-1982

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