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Effects of lasalocid and protein levels on feed intake and growth rate of Awassi lambs

Published online by Cambridge University Press:  05 November 2021

M. M. Muwalla
Affiliation:
University of Jordan, Amman, Jordan
M. Y. Harb
Affiliation:
University of Jordan, Amman, Jordan
T. F. Crosby
Affiliation:
Faculty of Agriculture, University College Dublin, Lyons Research Farm, Newcastle, Co. Dublin, Ireland
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Extract

Lasalocid is a polyether antibiotic derived from the fermentation of streptomyces lasaliensis used as a coccidiostat in sheep. There are varying literature reports on lamb growth rate and feed intake when lasalocid is included in the diet of feedlot lambs. While some reports have shown that lasalocid enhances feed efficiency in ruminants by decreasing feed intake and either maintaining or improving rate of gain others indicate that lasalocid did not have any effect on lamb growth rates or feed efficiency (Stobart et al., 1987). Also, when lasalocid was fed to Chios lambs, growth rate was increased but there was no improvement in feed conversion efficiency (Hadjipanayiotou et al., 1988). There are no published data in the literature relating to the use of lasalocid as a growth promoter in the Awassi breed of sheep fed complete diets and the purpose of this study was to investigate the effect of lasalocid with two levels of protein on the growth rate and feed efficiency of weaned male and female Awassi lambs.

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Programme
Copyright
Copyright © British Society of Animal Science 1997

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References

Hadjipanayiotou, M., Papachristoforou, C. and Economides, S., 1988. Effect of lasalocid on growth, nutrient digestibility and rumen characteristics in Chios lambs and Damascus kids. Small Ruminant Research, 1:3, 217227.CrossRefGoogle Scholar
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Stobart, R.H., Bergstrom, R.C. and Romsa, J. 1987. Growth and feed efficiency of feed lot lambs fed lasalocid or monensin. SID Res. Dig. 3 (2): 9.Google Scholar