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High level cereal diets for the growing/finishing pig: III. A comparison with a control diet of diets containing high levels of maize, flaked maize, sorghum, wheat and barley

Published online by Cambridge University Press:  27 March 2009

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

In a randomized block experiment, seventy-two Large White type weaner pigs (thirty-six hogs and thirty-six gilts) were individually and restrictedly fed to 200 lb live weight six diets (as wet mashes). Five of these diets contained high levels (85 % in the starter diets and 90 % in the finisher diets) of either maize, flaked maize, sorghum, wheat or barley. The sixth diet, which acted as the control diet for the experiment, was similar to the barley diet except that 25 % of weatings replaced a similar percentage of barley. A further three groups of six litter-mate hog pigs per group were used to measure the digestibility of these diets.

For the starter diets the maize diet had the highest digestible energy content, for the finisher diets the highest values were for the wheat and sorghum diets which in turn were similar to each other. The digestible energy content of the flaked maize diet was higher than the contents of the barley and control diets but lower than the contents determined for the other three diets.

Three of the pigs fed the sorghum diet developed leg weaknesses and this affected growth rate and food conversion efficiency. The symptoms suggested a pantothenic acid deficiency but the results of assays carried out on all the diets indicated that the condition was not necessarily due to a deficiency of this vitamin. Growth rates in the starter period (up to 115 lb) did not differ significantly between diets but food conversion for the maize and barley diets was significantly superior to that for the wheat and sorghum diets. In the finisher period growth rate and food conversion efficiency for the maize and wheat diets was significantly superior compared with that for the other four diets. Overall, from start to slaughter, the maize diet was significantly superior to the flaked maize, sorghum and control diets in both these parameters of performance. The energetic efficiencies of growth tended to be poorer for those diets with the better food conversion ratios, the best efficiency being for the control diet.

Carcass length differences were not significant but backfat thickness and eye muscle area differences followed closely the pattern found for lean and fat content of the carcass. In this context the highest percentages of lean were found first in the control and, secondly, in the barley treatment carcasses. Some differences were found in the development of anatomical regions and tissues within these regions. In particular, and relative to the five other diets, there were in the control diet carcasses (1) higher percentages formed by the leg and shoulder and (2) a higher percentage of lean in the middle.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 70 , Issue 3 , June 1968 , pp. 287 - 297
Copyright
Copyright © Cambridge University Press 1968

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References

REFERENCES

Agricultural Research Council (1966). The nutrient requirements of farm livestock. No. 3. Pigs. Summaries of Estimated Requirements. London: H.M.S.O.Google Scholar
Beames, R. M. (1963). A comparison of the digestibility of wheat and sorghum by pigs. Qd J. agric. Sci. 20, 231–8.Google Scholar
Becker, D. E., Jensen, A. H., Harmon, B. G., Nickelson, W. F. & Norton, H. W. (1965). Levels of wheat bran in meal and pelleted diets for pigs. J. Anim. Sci. 24, 873.Google Scholar
Bowland, J. P. (1967). Energy-protein relationships in rations for market pigs. 46th Annual Feeders' Day Report, Dept. Animal Science, University of Alberta, pp. 19–21.Google Scholar
Diggs, B. G., Becker, D. E., Terrill, S. W. & Jensen, A. H. (1959). The energy value of various feedstuffs for the young pig. J. Anim. Sci. 18, 1492.Google Scholar
Evans, R. E. (1960). Rations for livestock. Bull. No. 48. Ministry of Agriculture, Fisheries and Food. London: H.M.S.O.Google Scholar
Gill, D. R., Oldfield, J. E. & England, D. C. (1966). Comparative values of hull-less barley, regular barley, corn and wheat for growing pigs. J. Anim. Sci. 25, 34–36.CrossRefGoogle Scholar
Gorrill, A. D. L., Bell, J. M. & Williams, C. M. (1960). Ingredient and processing interrelationships in swine feeds. I. Effects of antibiotics, protein source and wheat bran on the responses to pelleted feed. Can. J. Anim. Sci. 40, 83–92.CrossRefGoogle Scholar
Greer, S. A. N., Hays, V. W., Mccall, J. T. & Speer, V. C. (1963). Effects of levels of feeding of corn and barley base diets on the performance and carcass characteristics of finishing pigs. J. Anim. Sci. 22, 1120.Google Scholar
Hammond, J. (1960). Farm Animals. Their Breeding, Growth and Inheritance. 3rd Edn.London: Edward Arnold and Co.Google Scholar
Kielanowski, J. (1967). Efficiency of energy utilization in growing pigs. Report of Proceedings and Invited Papers. 9th Int. Congr. Anim. Prod. pp. 212–24. Edinburgh, 1966.Google Scholar
Lawrence, T. L. J. (1967a). High level cereal diets for the growing/finishing pig. I. The effect of cereal preparation and water level on the performance of pigs fed diets containing high levels of wheat. J. agric. Sci. Camb. 68, 269–274.CrossRefGoogle Scholar
Lawrence, T. L. J. (1967b). High level cereal diets for the growing/finishing pig. II. The effect of cereal preparation on the performance of pigs fed diets containing high levels of maize, sorghum and barley. J. agric. Sci., Camb. 69, 271–81.CrossRefGoogle Scholar
Lucas, I. A. M. (1962). Feeding maize and wheat to pigs. Br. Fmr. No. 262, pp. 42–4.Google Scholar
Robinson, D. W., Prescott, J. H. D. & Lewis, D. (1965). The protein and energy nutrition of the bacon pig. IV. Digestible energy values of cereals in pig diets. J. agric. Sci., Camb. 64, 59–65.CrossRefGoogle Scholar
Srećković, A., Pavlović, M., Nikolić, M. & Bokorov, T. (1966). Influence of basic energy source upon growth, food conversion and carcass quality in fattening pigs for bacon and pork. Scientific Programme and Abstracts. 9th Int. Congr. Anim. Prod. Edinburgh, 1966.Google Scholar
Swift, R. W. (1957). The caloric value of T. D. N. J. Anim. Sci. 16, 753–6.CrossRefGoogle Scholar