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The effects on production efficiency of oleandomycin and oxytetracycline fed at low levels in the diet of heavy pigs

Published online by Cambridge University Press:  01 June 1962

J. Vernon ,
E. A. Mercer  and
G. D. Rosen
J. Vernon
Affiliation:
Pfizer Limited, Sandwich, Kent
E. A. Mercer
Affiliation:
Pfizer Limited, Sandwich, Kent
G. D. Rosen
Affiliation:
International Protein Products Limited Berkshire House, High Holborn, London, W.1
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Extract

Results are presented of an investigation involving 328 pigs on 7 farms in East Anglia, on the effect of oxytetracycline (10 g./ton), oleandomycin (2·5 g./ton) and oxytetracycline (10 g./ton) plus oleandomycin (2·5 g./ton), on the live-weight gain, feed consumption and feed conversion efficiency of pigs from weaning to slaughter at approximately 260 lb. live-weight. Effects on number of days from weaning to slaughter and carcass characteristics are also given.

Both antibiotics gave significant improvements in daily live-weight gain (5·4% for OTC and 4·0% for OM) and feed conversion efficiency (3·9% for OTC and 2·3% for OM). There was a significant negative interaction between the antibiotics on live-weight gain from weaning to slaughter.

The average number of days from weaning to slaughter was significantly reduced by both antibiotics (5·8 days for OTC and 5·4 days for OM) and there was a significant interaction between antibiotics.

Feed conversion efficiency for all pigs was significantly better on those farms where antibiotics had not previously been used but the antibiotic treatment effects were the same in both categories of farm studied.

Type
Research Article
Information
Animal Production , Volume 4 , Issue 2 , June 1962 , pp. 279 - 287
Copyright
Copyright © British Society of Animal Science 1962

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References

REFERENCES

Barber, R. S., Braude, R., & Mitchell, K. G., 1960. Further studies on antibiotic, copper and zinc supplements for growing pigs. Brit. J. Nutr., 14: 499.CrossRefGoogle ScholarPubMed
Braude, R., Kon, S. K., & Porter, J. W. G., 1953. Antibiotics in nutrition. Nutr. Abstr. Rev., 23:473.Google ScholarPubMed
Braude, R., Wallace, H. D. & Cunha, T. J., 1953. The value of antibiotics in the nutrition of swine. A review. Antibiotics and Chemotherapy., 3: 271.Google ScholarPubMed
Brownlee, K. A., Delves, C. S., Dorman, M., Green, C. A., Grenfell, E., Johnson, J. D. A., & Smith, N., 1948. The biological assay of streptomycin by a modified cylinder plate method. J. gen. Microbiol., 2: 40.CrossRefGoogle Scholar
Ferrando, R., & Theodossiades, G., 1960. The action of oleandomycin alone or admixed with terramycin on the growth rate of pigs. Proc. Pfizer Europe, agric. Res. Conf., Lucerne, 1960.Google Scholar
Grove, D. A., & Randall, W. A., 1955. Assay methods of antibiotics. Medical Encyclopedia, Inc.Google Scholar
Hawbaker, J. A., Diaz, F., Speer, V. C., Hays, V. W., & Catron, D. V., 1960. The effect of oleandomycin on the performance of the young growing pig. J. Anim. Sci., 19: 800.CrossRefGoogle Scholar
Lloyd, L. E., Crampton, E. W., & Mowat, D. N., 1961. Effect of calcium:phosphorus ratio, oleandomycin and protein level on the performance of early weaned pigs. J. Anim. Sci., 20: 176.CrossRefGoogle Scholar
Lucas, I. A. M., 1957. Antibiotic supplementation in rations for pigs. Vet. Rec., 69: 233.Google Scholar
Lucas, I. A. M., & Calder, A. F. C., 1957. Antibiotics and a high level of copper sulphate in rations for growing bacon pigs. J. agric. Sci., 49: 184.CrossRefGoogle Scholar
Magruder, D. A., Sherman, W. C., Reynolds, W. M., & Luther, H. G., 1958. A new antibiotic, oleandomycin, in swine rations. J. Anim. Sci., 17: 1177 (Soc. Proc.)Google Scholar
Ridgeon, R. F., 1960. Economics of pig production. School of Agriculture, Cambridge University. Farm economics branch. Report No. 52.Google Scholar