Fait partie de [OMC54]

2001 - 235 p.

Effects of the use of Gustor XXI(r) as a substitute of growth promoters in the intensive fattening of lambs

Garin D., Caja G., Mesià J.

108 lambs were used to evaluate the effects of Gustor XXIâ, an additive based on dicarboxylic acid salts together with a yeast culture, as an alternative to the use of growth promoters. The experimental design consisted of a 3x3 factorial with three doses of additive in the concentrate and three equilibrated plots of 12 lambs each per treatment. Average daily gain (ADG), concentrate intake (CI) and feed per gain ratio (FGR) were calculated during the whole fattening period (13-23 kg). Carcass weight and grading were recorded after slaughter. Rumen pH and apparent parakeratosis were also measured. The use of Gustor XXIâ reduced FGR and CI, but ADG was not affected. Carcass weight, conformation and subcutaneous and kidney adiposity, and rumen pH were unaltered by treatments. A better use of energy and an interest in Gustor XXIâ as a substitute of growth promoters in the intensive fattening of lambs are concluded.

Mots-clés    

ACIDE ORGANIQUE, AGNEAU, CONTROLE DE CROISSANCE, ENGRAISSEMENT

Citer cet article    

Garin D., Caja G., Mesià J. Effects of the use of Gustor XXI(r) as a substitute of growth promoters in the intensive fattening of lambs. In : Brufau J. (ed.). Feed manufacturing in the Mediterranean region. Improving safety: From feed to food. Zaragoza : CIHEAM, 2001. p. 181-184. (Cahiers Options Méditerranéennes; n. 54). 3. Conference of Feed Manufacturers of the Mediterranean, 2000/03/22-24, Reus (Spain). http://om.ciheam.org/om/pdf/c54/01600029.pdf