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The effect of feeding protected Methionine on the milk yield and fertility of Friesian dairy cows

Published online by Cambridge University Press:  22 November 2017

Bridget Drew ,
J A Foulkes  and
Jill F B Altman
Bridget Drew
Affiliation:
ADAS, MAFF, Coley Park, Reading
J A Foulkes
Affiliation:
MAFF, Cattle Breeding Centre, Reading
Jill F B Altman
Affiliation:
Rothamstead, Harpenden
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Extract

The results of studies undertaken outside the United Kingdom suggest that the inclusion of 50 g of 30% protected DL Methionine (Ketionin) into the ration of conventionally fed dairy cows improves feed utilisation, milk yield, fertility and health. For instance (Spørndly (1981) in Sweden measured the weight of cows during the experimental period and found that the weight loss in the control group was twice that of the cows that received Ketionin. In West Germany a significant increase in milk of 2.0 kg per day was obtained by Kaufmann and Hagemeister (1980) and similar results were reported by Kuther (1982). Stoikov (1978) in studies on 673 cows in Bulgaria showed an improvement in calving rate from 37% in the control group to 55% in the treated group and Daugaard (1978) working in Denmark reported that the inclusion of Ketionin reduced the incidence of Ketosis.

Type
Dairying
Information
Proceedings of the British Society of Animal Production (1972) , Volume 1984 , March 1984 , pp. 126
Copyright
Copyright © The British Society of Animal Production 1984

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References

Kuther, K. Protected methionine for high-yielding dairy cows. (German, English version may be requested from Rumen KJemi A/S). Rinderwelt 7:3–8, 1982.Google Scholar
Daugaard, J. Investigation on methionine supplement to lactating cows. Ph.D. Thesis. Institutes of Animal Sci. (65,80). The Royal Veterinary and Agricultural University. Copenhagen, Denmark, 1978.Google Scholar
Kaufmann, W., Hagemeister, H. Investigations of effect of producted methionine on milk yield and milk composition in practical feeding trials (German). Abteilung fur Tierernahrung, Bundesanstalt fur Milchforschung, Kield, Germany, 1980.Google Scholar
Sprøndly, R. Feeding experiments with coated methionine to lactating cows. Department of Animal Husbandry. Swedish University of Agricultural Sciences. Uppsala, Sweden, 1981.Google Scholar
Stoikov, D. Methionine and infertility in cows (Bulgarian). Veterinarna Sbirka 76:30–32, 1978.Google Scholar