Physiological response of growing pigs to qualitative and quantitative feed restriction in a humid tropical enviroment

Akinola S. O., . and Adeyemi O. A., . and Oluwatosin O. O., . and Njoku C. P., . and Sanya B. J., . Physiological response of growing pigs to qualitative and quantitative feed restriction in a humid tropical enviroment. pp. 125-140. ISSN 1394-3277

Feed restriction is a common management practice with market pigs to improve carcass quality and feed efficiency while decreasing production cost and carcass fat. But some scientists have argued that feed restriction poses stress on pig. Arising from this a 3 x 3 factorial experiment was carried out to determine the physiological responses of growing pigs to qualitative and quantitative feed restriction. Fifty four mixed breed pigs with initial average weight of 6.720.38 kg were divided into 9 treatment groups. Treatments 1-3 consisted of pigs fed ad-libitum with rations containing 20 18 or 16 crude protein respectively pigs on treatments 4-6 were fed 90 of ad-libitum with rations containing 20 18 or 16 crude protein respectively while treatments 7-9 were fed 80 of ad-libitum with rations containing 20 18 or 16 crude protein respectively. Pulse rate and rectal temperature were monitored on weekly basis while blood samples were collected on the 12th week for haematological and serum analysis. Quality of feed offered had no significant effect (p0.05) on the haematological and serum biochemistry parameters considered. Neutrophil lymphocyte neutrophil:lymphocyte monocyte total protein and cortisol values were significantly (p0.05) influenced by quantity of feed offered. Rectal temperature and pulse rate were not significantly (p0.05) influenced by the quality of feed but they were significantly (p0.05) affected by the quantity of feed offered. It can be concluded that quantitative not qualitative restriction had effect on some physiological (rectal temperature and pulse rate) and serum biochemistry parameters of growing pigs.

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Abstract

Feed restriction is a common management practice with market pigs to improve carcass quality and feed efficiency while decreasing production cost and carcass fat. But some scientists have argued that feed restriction poses stress on pig. Arising from this a 3 x 3 factorial experiment was carried out to determine the physiological responses of growing pigs to qualitative and quantitative feed restriction. Fifty four mixed breed pigs with initial average weight of 6.720.38 kg were divided into 9 treatment groups. Treatments 1-3 consisted of pigs fed ad-libitum with rations containing 20 18 or 16 crude protein respectively pigs on treatments 4-6 were fed 90 of ad-libitum with rations containing 20 18 or 16 crude protein respectively while treatments 7-9 were fed 80 of ad-libitum with rations containing 20 18 or 16 crude protein respectively. Pulse rate and rectal temperature were monitored on weekly basis while blood samples were collected on the 12th week for haematological and serum analysis. Quality of feed offered had no significant effect (p0.05) on the haematological and serum biochemistry parameters considered. Neutrophil lymphocyte neutrophil:lymphocyte monocyte total protein and cortisol values were significantly (p0.05) influenced by quantity of feed offered. Rectal temperature and pulse rate were not significantly (p0.05) influenced by the quality of feed but they were significantly (p0.05) affected by the quantity of feed offered. It can be concluded that quantitative not qualitative restriction had effect on some physiological (rectal temperature and pulse rate) and serum biochemistry parameters of growing pigs.

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Item Type:	Article
AGROVOC Term:	Physiological response
AGROVOC Term:	Humid tropics
AGROVOC Term:	Food restriction
AGROVOC Term:	Pigs
AGROVOC Term:	Carcasses
AGROVOC Term:	Feed efficiency
AGROVOC Term:	Production costs
AGROVOC Term:	Crude protein
AGROVOC Term:	Ad libitum feeding
AGROVOC Term:	Crude protein
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:27
URI:	http://webagris.upm.edu.my/id/eprint/22167

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