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An evaluation of the micronization process for preparing cereals for the growing pig. 2. Effects on growth rate, food conversion efficiency and carcass characteristics

Published online by Cambridge University Press:  02 September 2010

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

1. In each of two 2 × 3 factorially designed experiments 72 pigs were individually- and scale-fed diets containing 86·5% of maize, wheat or barley in ground or micronized, flaked and ground (micronized) forms.

2. In both experiments, the first between 17 and 20 kg and the second between 22 and 90 kg live weight, pigs offered the micronized maize and barley diets grew significantly faster and converted the dry matter of their diets significantly more efficiently than did pigs offered the ground maize and barley diets. There were no significant differences between the micronized and ground wheat diets in the first experiment but in the second experiment the micronized diet gave significantly inferior results.

3. In pigs slaughtered at 90 kg live weight those fed all the micronizedbased diets had significantly higher killing-out percentages than those fed the diets based on the ground cereals. Other within-cereal significant differences were those of increased carcass length in pigs given micronized maize and increased fat deposition in pigs given micronized wheat.

Type
Research Article
Information
Animal Production , Volume 16 , Issue 2 , April 1973 , pp. 109 - 116
Copyright
Copyright © British Society of Animal Science 1973

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References

REFERENCES

Lawrence, T. L. J. 1972a. High level cereal diets for the growing/finishing pig. VI. An evaluation of flaked maize, wheat and barley when included at high levels in the diet of the weaned pig grown to cutter weight (160 lb.). J. agric. Sci., Camb. 79: 155–160.CrossRefGoogle Scholar
Lawrence, T. L. J. 1972b. An evaluation of the major cereal grains for the growing pig. A.D.A.S. q. Rev. No. 7: 99–105.Google Scholar
Lawrence, T. L. J. 1973. An evaulation of the micronization process for preparing cereals for the growing pig. 1. Effects on digestibility and nitrogen retention. Anim. Prod. 16: 99–107.Google Scholar