Performance of gilts and castrates when fed separately on two different levels of feeding

Mak T. K., . and Kuan K. K., . Performance of gilts and castrates when fed separately on two different levels of feeding. pp. 1-6. ISSN 0126-6128

Twenty castrated male pigs and twenty gilts initially averaging 52 kg were fed individually so that that p erformance and carcass quality o f pigs fe d on a scale based on ad libitum feed in g could be com pared to those fe d on a restricted regime under local environmental conditions. Pigs fed on a scale based on ad libitum feed in g showed a significantly faster grow th rate and had m or back fa t com pared to pigs on restricted feeding. For each 1 o f feed restriction there was a corresponding 1 reduction in average daily gain and 0.917c reduction in average backfat thickness. Gilts excelled over castrates in perform ance and carcass quality; the former grew faster were more efficient in feed utilization and produced carcasses w th less ackfa and larger loin eye area com pared to the latter. The digestible energy intake of pigs was less than anim als o f sim ilar live w eight in tem perate environments. In order to im prove efficiency of production it is suggested that castrates and gilts be fe d separately during the finishing stage with the castrates sub jected to a more severe level of feed restriction in order to limit fat deposition.

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Abstract

Twenty castrated male pigs and twenty gilts initially averaging 52 kg were fed individually so that that p erformance and carcass quality o f pigs fe d on a scale based on ad libitum feed in g could be com pared to those fe d on a restricted regime under local environmental conditions. Pigs fed on a scale based on ad libitum feed in g showed a significantly faster grow th rate and had m or back fa t com pared to pigs on restricted feeding. For each 1 o f feed restriction there was a corresponding 1 reduction in average daily gain and 0.917c reduction in average backfat thickness. Gilts excelled over castrates in perform ance and carcass quality; the former grew faster were more efficient in feed utilization and produced carcasses w th less ackfa and larger loin eye area com pared to the latter. The digestible energy intake of pigs was less than anim als o f sim ilar live w eight in tem perate environments. In order to im prove efficiency of production it is suggested that castrates and gilts be fe d separately during the finishing stage with the castrates sub jected to a more severe level of feed restriction in order to limit fat deposition.

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Item Type:	Article
AGROVOC Term:	Gilts
AGROVOC Term:	Feeding
AGROVOC Term:	Restricted feeding
AGROVOC Term:	Carcasses
AGROVOC Term:	Pigs
AGROVOC Term:	Backfat
AGROVOC Term:	Metabolism
AGROVOC Term:	Digestibility
AGROVOC Term:	Diet
AGROVOC Term:	Chemical composition
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:27
URI:	http://webagris.upm.edu.my/id/eprint/22842

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