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Performance of beef cattle in feedlot supplemented with different ionophores

by de Oliveira, Marcos Garcia

Abstract (Summary)
The present study was conducted to estimate performance of 36 castrated Nelore steers, in feedlot during 100 days of experiment. Treatments were: control (no ionophore), 44 mg of lasalocid/kg of concentrate in dry matter (DM) and 44 mg of monensin/kg of concentrate in DM. As forage, it was used Coast-Cross (Cynodon dactylon) hay, in 30% of total ration. There was not effect of monensin and lasalocid supplementation in blood glucose and urea concentrations. After 35 days of experiment, the dry matter intake decreased in monensin group, with -6,5% and -5,9%, for control and lasalocid groups (P<0,05). For other performance parameters, there were not significant diferences in daily gain (only tendence, with P<0,1668), feed efficiency, carcass dressing percentage, rib eye area and subcutaneous fat thickness through the experiment
This document abstract is also available in Portuguese.
Bibliographical Information:

Advisor:Marcus Antonio Zanetti; Marcelo Landim Brisola; Raul Franzolin Neto; Marcus Antonio Zanetti

School:Universidade de São Paulo

School Location:Brazil

Source Type:Master's Thesis

Keywords: feed additives lasalocid lasalocida monensin monensina

ISBN:

Date of Publication:12/07/2004

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