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Effects of rolling and alkali treatment of barley grain supplements on forage intake and utilization by steers and lactating cows

Published online by Cambridge University Press:  27 March 2009

N. Sriskandarajah ,
A. Ashwood  and
R. C. Kellaway
N. Sriskandarajah
Affiliation:
Department of Animal Husbandry, University of Sydney, Camden, N.S.W. 2570, Australia
A. Ashwood
Affiliation:
N.S.W. Department of Agriculture, Agricultural Research Centre, Wollongbar, N.S.W. 2480, Australia
R. C. Kellaway
Affiliation:
Department of Animal Husbandry, University of Sydney, Camden, N.S.W. 2570, Australia
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Summary

In Expt 1, lactating dairy cows grazing kikuyu grass (Pennisetum clandestinum) were given no supplement (C), supplements of rolled barley grain at 4 (4R) and 6 (6R) kg/day and supplements of NaOH-treated whole barley grain at 4 (4A) and 6 (6A) kg/day. Daily production of milk (kg/day), fat and protein (g/day) and live-weight changes (g/day) respectively were C 7·82, 303, 276, 450; 4R 9·26, 338, 315, 865; 4A 10·23, 366, 349, 529; 6R 10·09, 352, 343, 672; 6A 10·61, 363, 348, 361.

Milk production was significantly higher (P < 0·05) and live-weight gain significantly lower (P < 0·05) on NaOH-treated grain than on rolled grain.

In Expt 2, yearling steers in pens were fed pasture hay ad libitum with no supplement (C) and 3 kg/day of barley grain which was either rolled (3R) or NaOH-treated whole grain (3A). Mean intakes of hay (g/day) and DOMD in vivo (%) respectively were C 7684, 60; 3R 5224, 65; 3A 6209, 60.

Hay intake was significantly higher (P < 0·05) on NaOH-treated grain than on rolled grain.

Fractional disappearance rates of rolled and NaOH-treated grain from nylon bags suspended in the rumen were, respectively, 0·15 and 0–07/h for the period 0–4 h, and 0·07 and 0·02/h for the period 4–12 h incubation. In Expt 2, rumen pH was higher and the digestion rate of hay in nylon bags in vivo was higher on C than on 3R and 3A. Volatile fatty acid (VFA) concentrations in the rumen did not differ significantly between diets.

It was concluded that greater milk production and hay intakes when cattle were fed NaOH-treated whole barley than when they were fed rolled barley were attributable to the slower rate of digestion of the former. The NaOH treatment (30 g NaOH/kg grain) was probably too low and further study is necessary to determine optimum levels of treatment, which are likely to vary with the ratio of grain: forage in the diet.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 95 , Issue 3 , December 1980 , pp. 555 - 562
Copyright
Copyright © Cambridge University Press 1980

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References

REFERENCES

Annison, E. F.Bickerstaffe, R. & Linzell, J. L. (1974). Glucose and fatty acid metabolism in cows producing milk of low fat content. Journal of Agricultural Science, Cambridge 82, 87–95.CrossRefGoogle Scholar
Bauman, D. E., Davis, C. L. & Bucholtz, H. F. (1971). Propionate production in the rumen of cows fed either a control or high-grain, low-fiber diet. Journal of Dairy Science 54, 1282–1287.CrossRefGoogle ScholarPubMed
Blaxter, K. L. (1967). The feeding of dairy cows for optimal production. George Scott Robertson Memorial Lecture, Queen's University, Belfast. 11 1966.Google Scholar
Blaxter, K. L., Wainman, F. W. & Wilson, R. S. (1961). The regulation of food intake by sheep. Animal Production 3, 51–61.Google Scholar
Blaxter, K. L. & Wilson, R. S. (1963). The assessment of a crop husbandry technique in terms of animal production. Animal Production 5, 27–42.Google Scholar
Broster, W. H. (1972). Effect on milk yield of the cow of the level of feeding during lactation. Dairy Science Abstracts 34, 265–288.Google Scholar
Broster, W. H., Broster, V. J. & Smith, T. (1969). Effect on lactation performance of level of feeding in early and in mid-lactation. Journal of Agricultural Science, Cambridge 72, 229–245.CrossRefGoogle Scholar
Campling, R. C. & Murdoch, J. C. (1966). The effect of concentrates on the voluntary intake of roughages by cows. Journal of Dairy Research 33, 1–12.CrossRefGoogle Scholar
Cowan, R. T., Byford, I. J. R. & Stobbs, T. H. (1975). Effects of stocking rate and energy supplementation on milk production from tropical grass-legume pasture. Australian Journal of Experimental Agriculture and Animal Husbandry 15, 740–746.CrossRefGoogle Scholar
Cowan, R. T. & Davison, T. M. (1978). Milk yields of cows fed maize and molasses supplements to tropical pastures at two stocking rates. Australian Journal of Experimental Agriculture and Animal Husbandry 18, 12–15.CrossRefGoogle Scholar
Flatt, W. P., Moe, P. W., Munson, A. W. & Cooper, T. (1969). Energy utilization by high producing dairy cows. II. Summary of energy balance experiments with lactating Holstein cows. In Energy Metabolism of Farm Animals, European Association of Animal Production Publication no. 12, p. 235 (ed. Blaxter, K. L., Kielanowski, J. and Thorbek, G.). Newcastle-upon-Tyne: Oriel Press.Google Scholar
Gray, D. M. & Schalm, O. W. (1962). The mastitis variable in milk yield as estimated by the California mastitis test. American Journal of Veterinary Research 23, 541–543.Google ScholarPubMed
Jeffery, H., Buesnel, R. J. & O'Neill, G. H. (1976). Short-term studies on the response of grazing dairy cows to dietary supplementation. Australian Journal of Experimental Agriculture and Animal Husbandry 16, 445–451.CrossRefGoogle Scholar
Kaufmann, W. (1976). Influence of the composition of ration and the feeding frequency on pH-regulation in the rumen and on feed intake in ruminants. Livestock Production Science 3, 103–114.CrossRefGoogle Scholar
Leaver, J. D., Campling, R. C. & Holmes, W. (1968). Use of supplementary feeds for grazing dairy cows. Dairy Science Abstracts 30, 355–361.Google Scholar
Mehrez, A. Z. & Ørskov, E. R. (1977). A study of the artificial fibre bag technique for determining the digestibility of feeds in the rumen. Journal of Agricultural Science, Cambridge 88, 645–650.CrossRefGoogle Scholar
Ministry of Agriculture, Fisheries and Food (1975). Energy allowances and feeding systems for ruminants. Technical Bulletin 33. London: H.M.S.O.Google Scholar
Ørskov, E. R., Macdearmid, A., Barnes, B. J., Grubb, D. A. & Lukins, B. A. (1979). Effect of sodium hydroxide treatment on digestibility of oats, barley, wheat and maize and on utilization of sodium hydroxide oats and barley by lambs and steers. Animal Production 432 (Abstracts).Google Scholar
Ørskov, E. R. & Reid, G. W. (1979). The effect of proportion of concentrate and method of cereal processing on type of rumen fermentation and milk quality in Friesian cows. Proceedings of the Nutrition Society 38, 131A.Google ScholarPubMed
Ørskov, E. R., Soliman, H. S. & Macdearmid, A. (1978). Intake of hay by cattle given supplements of barley subjected to various forms of physical treatment or treatment with alkali. Journal of Agricultural Science, Cambridge 90, 611–615.CrossRefGoogle Scholar
Schalm, O. W. & Noorlander, D. O. (1957). Experiments and observations leading to development of the California Mastitis Test. Journal of the American Veterinary Medical Association 130, 199–204.Google ScholarPubMed
Tilley, J. M. A. & Terry, R. A. (1963). A two stage technique for in vitro digestion of forage crops. Journal of the British Grassland Society 18, 104–111.CrossRefGoogle Scholar
Torres, F. & Boelcke, C. (1976). Grain supplementation of low quality grasses. First International Symposium, Feed Composition, Animal Nutient Requirements, and Computerization of Diets (ed. Fonnesbeck, P. V., Harris, L. E. and Kearl, L. C.). Utah Agricultural Experiment Station, Utah State University, Logan, Utah.Google Scholar
Van Soest, P. J. (1963). Use of detergents in the analysis of fibrous feeds. II. A rapid method for the determination of fiber and lignin. Journal of the Association of Official Agricultural Chemists 46, 829–834.Google Scholar