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The effect of field wilting and mechanical treatment on the feeding value of grass silage for beef cattle and on beef output per hectare

Published online by Cambridge University Press:  02 September 2010

R. W. J. Steen
R. W. J. Steen
Affiliation:
Agricultural Research Institute of Northern Ireland, Hillsborough, Co. Down
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Abstract

Two experiments were carried out to compare three methods of harvesting grass silage for beef production. These involved (a) harvesting the grass directly with a flail forage harvester (b) pre-cutting the grass with a rotary mower and harvesting it with a precision-chop forage harvester without wilting and (c) pre-mowing and harvesting with a precision-chop forage harvester after field wilting for 36 to 80 h (experiment 1) or 20 to 24 h (experiment 2). Half of the grass harvested by each method received formic acid at a rate of 2·5 1/t while the other half received no additive. The silages were offered ad libitum and supplemented with 2·6 kg concentrates per head daily to 72 castrated male cattle in each experiment. The unwilted and wilted herbages had mean dry-matter concentrations of 163 and 273 g/kg at ensiling and all silages were well preserved. Harvesting silage with a precision-chop rather than a flail forage harvester produced only a small non-significant increase in intake (0·034) and performance (0·046) and did not affect carcass gain per ha. Field wilting for 36 to 80 h prior to ensiling (experiment 1) reduced animal performance by 0·08 and beef output per ha by 0·11. Wilting for 20 to 24 h in ideal weather (experiment 2) did not affect animal performance or beef output per ha compared with that produced by well-preserved, unwilted silage. There was no significant interaction between method of harvesting and additive treatment.

Type
Research Article
Information
Animal Production , Volume 41 , Issue 3 , December 1985 , pp. 281 - 291
Copyright
Copyright © British Society of Animal Science 1985

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References

Allen, D. M. and Kilkenny, B. 1984. Beef production from dairy-bred calves. In Planned Beef Production, 2nd ed., pp. 131–173. Granada, London.Google Scholar
Appleton, M. 1981. Silage dry matter percentage and animal performance. Proc. 6th Silage Conf., Edinburgh, pp. 33–34.Google Scholar
Brown, W. O. and Kerr, J. A. M. 1965. Losses in the conservation of grassland herbage in lined trench silos. 1. A comparison of long and lacerated silages made by the warm fermentation process. J. agric. Sci., Camb. 64: 135–141.CrossRefGoogle Scholar
Dulphy, J. P. and Demarouilly, C. 1972. [Effect of type of forage harvester on the feeding value of silages. 1. Preliminary results.] Annls Zootech. 21: 163–173.CrossRefGoogle Scholar
Dulphy, J. P. and Demarouilly, C. 1973. [Effect of type of forage harvester and chopping fineness on the feeding value of silages.] Annls Zootech. 22: 199–217.CrossRefGoogle Scholar
Dulphy, J. P. and Demarouilly, C. 1975. [Influence of the type of forage harvester on the value of grass silages for heifers of dairy breeds.] Annls Zootech. 24: 351–362.CrossRefGoogle Scholar
Elsden, S. R. and Gibson, Q. M. 1954. The estimation of lactic acid using eerie sulphate. Biochem. J. 58: 154–158.CrossRefGoogle Scholar
Ettala, E., Rissanen, H., Virtanen, E., Huida, L. and Kiviniemi, J. 1982. Wilted and unwilted silage in the feeding of dairy cattle. Annls agric. Fenn. 21: 67–83.Google Scholar
Flynn, A. V. 1978. The effect of ensiling on the beef production potential of grass. Proc. 5th Silage Conf., Hannah Res. Inst., Ayr, pp. 48–49.Google Scholar
Forbes, T. J. and Jackson, N. 1971. A study of the utilization of silage of different dry matter content by young beef cattle with and without supplementary barley. J. Br. Grassld Soc. 26: 257–264.CrossRefGoogle Scholar
Hastings, M. 1970. The effects of silage cutting date and wilting upon semi-intensive beef production. Anim. Prod. 12: 359 (Abstr.).Google Scholar
Hastings, M. 1974. The effects of silage chop length and mode of feeding in beef production. Proc. Br. Soc. Anim. Prod. (New Ser.) 3: 89.Google Scholar
Hastings, M. 1976. Aspects of harvesting, storage and unloading in practical silage systems. Proc. 4th Silage Conference, Hurley, Pap. No. 3.Google Scholar
Kempster, A. J., Cuthbertson, A. and Harrington, G. 1982. Beef carcase grading and classification. In Carcase Evaluation in Livestock Breeding, Production and Marketing, pp. 163–202. Granada, London.Google Scholar
Levitt, M. S., Hegarty, A. and Radel, M. J. 1964. Studies of grass silage from predominantly Paspalum dilatatum pastures in South Eastern Queensland. 2. Influence of length of cut on silages with and without molasses. Qd J. agric. Sci. 21: 181–192.Google Scholar
McCarrick, R. B. 1965. Effects of stage of growth and method of herbage conservation on performance of weanling cattle. Ir. J. agric. Res. 4: 161–178.Google Scholar
McCullough, I. I. 1979. Development of a high quality silage system for beef production. A. Rep. Res. Tech. Work, Dep. Agric. Nth. Ire., p. 207.Google Scholar
Marsh, R. 1979. The effects of wilting on fermentation in the silo and on the nutritive value of silage. Grass Forage Sci. 34: 1–10.CrossRefGoogle Scholar
Mayie, C. S. 1983. Studies on field and storage losses occurring during ensilage and on the supplementation of grass silage for milk production. Ph.D. Thesis, Queen's Univ. Belfast.Google Scholar
O'Kiely, P. and Flynn, A. V. 1980. Effect of wilting on the efficiency of utilising grass silage dry matter for beef production. An Foras Taluntais, Anim. Prod. Res. Rep., pp. 25–26.Google Scholar
O'Kiely, P. and Flynn, A. V. 1984. The pick-up wagon in silage making. Proc. 7th Silage Conf., Belfast, pp. 57–58.Google Scholar
Patterson, D. C. and Stef, N. R. W. J. 1982. Studies on the composition of effluent from grass silage and its feeding value for pigs and beef cattle. 55th A. Rep. agric. Res. Inst. Nth. he., pp. 23–29.Google Scholar
Raymond, F. 1980. Additive treated and wilted grass silage for intensive bull beef production. In Forage Conservation in the 80's (ed. Thomas, C.), Occ. Symp. Br. Grassld Soc. No. 11, pp. 397–402.Google Scholar
Reardon, T. F. 1975. A comparison of flail-chopped and fine-chopped silages. Agric. Res. in NZ Min. Agric. Fisheries, A. Rep. Res. Div., 1974-75, p. 51.Google Scholar
Steen, R. W. J. 1984. A comparison of unwilted and wilted grass silages offered to beef cattle without and with monensin sodium. Grass Forage Sci. 39: 35–41.CrossRefGoogle Scholar