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Ultra-violet irradiation of fattening pigs

Published online by Cambridge University Press:  01 March 1959

J. Walker-Love ,
R. Laird Jnr ,
J. M. Thomson  and
K. W. Gray
J. Walker-Love
Affiliation:
West of Scotland Agricultural College, Auchincruive, near Ayr
R. Laird Jnr
Affiliation:
West of Scotland Agricultural College, Auchincruive, near Ayr
J. M. Thomson
Affiliation:
West of Scotland Agricultural College, Auchincruive, near Ayr
K. W. Gray
Affiliation:
West of Scotland Agricultural College, Auchincruive, near Ayr
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Extract

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.

Type
Research Article
Information
Animal Production , Volume 1 , Issue 1 , March 1959 , pp. 21 - 29
Copyright
Copyright © British Society of Animal Science 1959

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References

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