Abstract

Oxidation of anthocyanin by polyphenol oxidase (PPO) or peroxidase (POD) causes enzymatic browning. It leads to Therapeutic welfare administration of xylazine and its co-administration with ascorbic acid in bucks exposed to road stress and its effect on chevon quality was experimented in Sahel bucks.The first group was administered with (0.015mg/Kg) xylazine intramuscularly. The second test group was given xylazine intramuscularly and ascorbic acid orally, while the third group was considered as control. Each group had sixteen animals. Blood samples were collected prior to the study, midway and at the end of the journey. Thyroid hormones triiodothyronine (T3), tetraiodothryronine (T4) and some electrolytes were assessed. A Pearson correlation of the hormones and chevon characteristics was conducted and the dynamics of electrolytes at different phases of the experimental journey was monitored. Animals were slaughtered and chevon characteristics assessed. There was a significant (P<0.05) negative correlation between water hold capacity (WHC) and shrinkage. Significant (P<0.01) positive correlation between WHC and pH was recorded. There was a significant (P<0.05) positive correlation of thyroid hormones and some chevon characteristics parameters in the test group administered with xylazine (0.015mg/kg) and ascorbic acid (300 mg/kg). There was also a significantly (P<0.05) higher Na+ plasma level at the end phase in the co-administered and control groups. The T3 was significantly (P<0.05) higher in xylazine at the end of the journey when compared to the co-administered group. In conclusion, xylazine and its co-administration influenced the T4 and T3 by causing adjustment in the physiology, which improved the chevon parameters namely; WHC, color, shrinkage adverse effect and ultimate pH.

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