Effect of castration and testosterone implanatation on apolipoprotein in male chickens.

Chen K. L., . and Chi W. T., . and Chiou P. W. S., . (2004) Effect of castration and testosterone implanatation on apolipoprotein in male chickens. [Proceedings Paper]

Castration changes the lipoprotein composition and hence lipid accumulation in male chickens. Apolipoprotein apo plays an important role in lipoprotein. Therefore this trial studied the influence of castration and testosterone implantation in capon on the apoliprotein composition within the lipoproteins. Healthy and uniform male and Single Comb White Leghorn chickens were castrated at 12-weeks-old. Capon were randomly selection at 16-weeks-old for a 10-weeks feeding experiment. Fisteen intact male and capon each were assigned to Trial 1. Ten sham-operated and 40 capon were in Trial 2 and randomly divided into four treatmentscholesterol implantation 1.62 mm i.d. 3.6 mm o.d. 9.240.23mg medium testosterone 1.62 mm i.d. 3.16 mm o.d. 9.81 24mg doses. Trial 1 results showed that castration did not significantly affect P0.05 various apolipoprotein rations in LDL at 16 21 and 26-weeks-old capon. Castration however significantly increased P0.05 apo 66 kDa and decreased P 0.05 apo AI in HDL at 21-weeks-old capon compared to male. Data from Trial 2 showed that testosterone implantation did not significantly influence P0.05 apo ratio in LDL. Significantly increased apo 66 kDa and decreased apo AI in HDL at 16 and 21-weeks-old and significantly increased apo 66kDa and decreased apo C and E in HDL at 26-weeks-old compared from CHOL implanted to sham. Testosterone implandtation significantly decreased apo 66kDa and the amount decrease was correlated to the increase in the dose implanted as shown in the high dose testosterone implanted exhibiting significantly lower than CHOL implanted P0.05. However this was still significantly higher P0.05 than that for the sham. All testosterone implanted capon and sham showed significantly lower P0.05 apo C ratio compared to CHOL implanted. Castration change the apo ratio in HDL and hence influenced lipoprotein transport while testosterone implantation changed the lipoprotein apo ratio in capon approaching to the level intact male chicken.

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Abstract

Castration changes the lipoprotein composition and hence lipid accumulation in male chickens. Apolipoprotein apo plays an important role in lipoprotein. Therefore this trial studied the influence of castration and testosterone implantation in capon on the apoliprotein composition within the lipoproteins. Healthy and uniform male and Single Comb White Leghorn chickens were castrated at 12-weeks-old. Capon were randomly selection at 16-weeks-old for a 10-weeks feeding experiment. Fisteen intact male and capon each were assigned to Trial 1. Ten sham-operated and 40 capon were in Trial 2 and randomly divided into four treatmentscholesterol implantation 1.62 mm i.d. 3.6 mm o.d. 9.240.23mg medium testosterone 1.62 mm i.d. 3.16 mm o.d. 9.81 24mg doses. Trial 1 results showed that castration did not significantly affect P0.05 various apolipoprotein rations in LDL at 16 21 and 26-weeks-old capon. Castration however significantly increased P0.05 apo 66 kDa and decreased P 0.05 apo AI in HDL at 21-weeks-old capon compared to male. Data from Trial 2 showed that testosterone implantation did not significantly influence P0.05 apo ratio in LDL. Significantly increased apo 66 kDa and decreased apo AI in HDL at 16 and 21-weeks-old and significantly increased apo 66kDa and decreased apo C and E in HDL at 26-weeks-old compared from CHOL implanted to sham. Testosterone implandtation significantly decreased apo 66kDa and the amount decrease was correlated to the increase in the dose implanted as shown in the high dose testosterone implanted exhibiting significantly lower than CHOL implanted P0.05. However this was still significantly higher P0.05 than that for the sham. All testosterone implanted capon and sham showed significantly lower P0.05 apo C ratio compared to CHOL implanted. Castration change the apo ratio in HDL and hence influenced lipoprotein transport while testosterone implantation changed the lipoprotein apo ratio in capon approaching to the level intact male chicken.

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Item Type:	Proceedings Paper
Additional Information:	Summary En
AGROVOC Term:	COCKERELS
AGROVOC Term:	CHICKENS
AGROVOC Term:	YOUNG ANIMALS
AGROVOC Term:	POULTRY
AGROVOC Term:	CASTRATION
AGROVOC Term:	ANIMAL HUSBANDRY METHODS
AGROVOC Term:	TESTES
AGROVOC Term:	APOPROTEINS
AGROVOC Term:	ASIA
Geographical Term:	MALAYSIA
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:27
URI:	http://webagris.upm.edu.my/id/eprint/16553

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