Protective Effect of Phenorbarbitone aAnd Griseofulvin Againt Signal Grass (Brachiaria Decumbens) Toxicity in Sheep

The protective effect of phenobarbitone and griseofulvin against signal grass (B. decumbens) toxicity were studied in fifty-three Wiltshire x Malin (Indigenous Malaysian) male sheep. Twenty-six animals were used in phenobarbitone experiment and twenty-seven animals were used in griseofulvin experime...

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Bibliographic Details
Main Author: Ab Hamid, Hasiah
Format: Thesis
Language:English
Published: 2001
Online Access:http://ethesis.upm.edu.my/id/eprint/3560/1/FPSK_%28M%29_2001_11_F.pdf
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Summary:The protective effect of phenobarbitone and griseofulvin against signal grass (B. decumbens) toxicity were studied in fifty-three Wiltshire x Malin (Indigenous Malaysian) male sheep. Twenty-six animals were used in phenobarbitone experiment and twenty-seven animals were used in griseofulvin experiment. Grazing on signal grass significantly decreased the concentration of cytochrome P-4S0 and the activity of drug metabolizing enzyme, viz. aminopyrine-N-demethylase, aniline-4- hydroxylase, UDP-glucuronyltransferase and glutathione-S-transferase in liver and kidney of sheep. The concentration of cytochrome P-4S0 was determined in microsomal fraction according to the method of Omura and Sato (1964a) as described by Mazel (1971). The activities of aminopyrine-N-demethylase and aniline-4- hydroxylase were determined using Mazel, 1971 method by estimating the concentration of formaldehyde and p-aminophenol, respectively.