Author:
Walker-Love J.,Laird R.,Thomson J. M.,Gray K. W.
Abstract
1. Ninety-six Large White fattening pigs, 8-10 weeks old at the beginning of the trial were used to study the effects of ultra-violet irradiation (22½ hours daily) with and without oxytetracycline supplements of the diet. All meal fed was fortified with vitamin D.2. Under the conditions of this trial ultra-violet irradiation was without effect. Oxytetracycline supplementation resulted in significantly higher live-weight increases, lower age at slaughter and improved feed conversion.3. No significant treatment differences were recorded for any of the carcass measurements.4. Ultra-violet irradiation did not reduce the number of ‘thumping’ pigs nor the degree of lung damage by virus pneumonia, whereas ‘thumping’ was significantly less on the oxytetracycline treatments.5. The results are discussed in relation to vitamin D requirements and the presence of virus pneumonia.
Publisher
Cambridge University Press (CUP)
Subject
Animal Science and Zoology
Reference12 articles.
1. The analysis of replicated experiments when the field results are incomplete;Yates;Emp. J. exp. Agric.,1933
2. Ultrafioletovoe oblučenie životnyh;Novikova;Nauka i Žiznj,1954
3. The growth of pigs kept to one level of feeding, in two environments, and fed diets with and without an antibiotic
4. Antibiotics in nutrition;Braude;Nutr. Abstr. Rev.,1953
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