Monensina sódica como aditivo de forragem II - efeitos no metabolismo ruminal e concentração de glicose e uréia no sangue

Abstract

One experiment was conducted to determine the effect of 0,15 and 30 mg mo­nensin/head/day upon rumen/metabolism, blood glucose and urea leveis and the supple­mentary value of monensin as a low quality forage addictive. The hay of perennial soybean (Glycine wightil) cv. Tinarro was used. COBAN -100 (Elanco Química Lt<la), at 10% in weight ofmonensin activity was utilized in this ex­periment. The experiment was clivided in three phases:- Phase I: Hay; - Phase II: Hay + 15 mg monensin/head/day. - Phase III: Hay + 30 mg monensin/head/day. Nine wethers were utilized anel three of them were rumen fistulated. A nine -replicate randomired complete block experimental design was used. No statistical differences (P < 0,05) were noticed for pH and ammonia and pro­tein concentration of lhe rumen fluid. ln the next hours after feeding, smaltor none chan­ges were registered in the treatment. The volatile fatty acid concentration, although showing some modifications de­creasing the acetic acid and increasing propionic acid concentrations, did not differ in ap­plied treatment (P < 0,05). Tbe blood glucose leveis increased sligbtly; althougb urea concentration was cli­creased with lhe addition of monensin but such changes were not meaningful (P < 0,05).