Some pharmacological Studies on The Concurrent Use Of Antioxidants And Growth Promoters

Feed additives are substances added to the poultry ration to perform different functions such as prevent oxidation and rancidity, as antioxidant [butylated hydroxy toluene ( B~T )] and affect favorably the performance of birdsin good health, as growth promoters ( virginiamycin or pro biotic ).The present study was carried out to evaluate the effect of feeding butylated hydroxy toluene ( BHT ), virginiamycin (Virginiamore), probiotic (Bio- Top), BHT with virginiamycin and BHT with probiotic for six successive weeks on economical parameters [ bobiochemical parameters [ total protein, serum uric acid and serum creatinine ]were also evaluated in growing broiler chickens. One hundred, one-day old, unsexed Hubbard chi.cks were used. They are classified by Ranking technique ( i.e. using weights of birds in grouping) into six groups of fifteen chicks each. The first group was fdiet) and kept as control. The second group was basal diet mixed with butylated hydroxy toluene ( BHT ) ( 130 mg / kg ration ). The third group was basal diet ( 20 mg / kg ration ). The fourth group was basal diet