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Effects on the bacon pig of adding protein and vitamin-mineral supplements to barley without mixing and at different time intervals

Published online by Cambridge University Press:  02 September 2010

T. L. J. Lawrence
T. L. J. Lawrence
Affiliation:
University of Liverpool, Faculty of Veterinary Science, Veterinary Field Station, Neston, Wirral, Cheshire L64 7TE
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Summary

1. In a randomized block experiment 72 Large White-type pigs (in pens of six) were individually fed twice daily on six variations of a basic diet containing 80% barley, 15% soya bean meal (S) and 5% of a vitamin-mineral supplement (VM).

2. For treatments 1 to 3 the pigs were given both supplements together. The combined supplement was either mixed with the barley (treatment 1—control), or added to the barley at either both meals of the day (2), or at only the morning meal (3). For treatments 4 to 6 the supplements were given separately. For treatment 4, VM was given at the morning feed and S in the afternoon; for treatment 5, VM was given at both feeds of one day and S at both feeds of the next day, for treatment 6 the supplements were given only at the morning feeds, VM on one day followed by S on the next day.

3. Overall, there were no significant differences between treatments 1 to 5 in growth rate or efficiency of food conversion. The pigs on treatment 6 refused a relatively large percentage of their food, grew significantly more slowly but converted their food significantly more efficiently than did the pigs on any of the other treatments. There were no significant differences between treatments in any of the carcass data recorded.

Type
Research Article
Information
Animal Production , Volume 12 , Issue 2 , May 1970 , pp. 299 - 305
Copyright
Copyright © British Society of Animal Science 1970

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References

REFERENCES

Braude, R. and Rowell, J. G. 1968. Effects of simplifying feeding methods for growing pigs by using a single ration throughout and by providing cereal and supplement components unmixed. J. agric. Sci., Camb. 71: 271–275.CrossRefGoogle Scholar
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Yeo, M. L. and Chamberlain, A. G. 1966. Delayed protein supplementation of barley diets for weaning pigs. Proc. Nutr. Soc. 25: xli.Google Scholar