| 
      Data are represented as mean ± S.D, n=9. Means with the same letter in the 
    same column for each parameter are not significantly different. Significant difference 
    (P<0.05). ALT=Alanine aminotransferase; AST=Aspartate aminotransferase;
    T3=Triiodothyroxine; T4=Thyroxine
        | Treatment | ALT(U/l) | AST    (U/l) | T3    (ngml-1) | T4    (ngml-1) |  
        | S1 | 28.42 ± 0.93a | 121.35 ± 1.46a | 3.00 ± 0.19c | 4.11 ± 0.09d |  
        | S2 | 33.57 ± 1.06b | 126.57 ± 0.19b | 2.73 ± 0.01b | 3.84 ± 0.05c |  
        | S3 | 37.23 ± 1.62c | 128.09 ± 0.93c | 2.27 ± 0.03a | 2.64 ± 0.06b |  
        | S4 | 38.52 ± 0.59d | 132.69 ± 1.44d | 2.09 ± 0.04a | 2.21 ± 0.01a |  |