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Statistical research on the fate of dietary mineral elements in dry and lactating cows IV. Chloride

Published online by Cambridge University Press:  27 March 2009

R. Paquay ,
F. Lomba ,
A. Lousse  and
V. Bienfet
R. Paquay
Affiliation:
Faculty of Veterinary Medicine, Cureghem, Brussels, Belgium
F. Lomba
Affiliation:
Faculty of Veterinary Medicine, Cureghem, Brussels, Belgium
A. Lousse
Affiliation:
Faculty of Veterinary Medicine, Cureghem, Brussels, Belgium
V. Bienfet
Affiliation:
Faculty of Veterinary Medicine, Cureghem, Brussels, Belgium
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Summary

Statistical analyses were carried out on the data obtained under very strict conditions in metabolism stalls with 41 different rations fed to 127 adult non-pregnant dry cows, and with 14 other different rations fed to 35 adult non-pregnant lactating cows that had calved 2–6 months earlier and whose daily milk production ranged from 11 to 20 kg.

The authors have calculated and studied the correlations between faecal and urinary losses of chloride, chloride excretion with the milk, digestible chloride and chloride balance and many other nutritive factors which were analysed for each of the 55 above mentioned experimental diets.

The results show that the digestion and utilization of chloride is not influenced by the amount of ingested chloride at the time of the trial. The digestion is generally very high, negatively correlated with dry matter, energy, and pentosans intakes, and positively with nitrogen and potassium intakes. But the most important factor in the fate of dietary chloride seems to be the necessity for the cow to eliminate most of the time high amounts of potassium in the urines.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 73 , Issue 2 , October 1969 , pp. 223 - 229
Copyright
Copyright © Cambridge University Press 1969

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References

REFERENCES

Lomba, F., Paquay, R., Bienfet, V. (1968). Statistical research on the fate of dietary mineral elements in dry and lactating cows. II. Mag-nesium. J. agric. Sci., Camb. 71, 181–8.CrossRefGoogle Scholar
Lomba, F., Paquay, R., Bienfet, V. (1969). Statistical research on the fate of dietary mineral elements in dry and lactating cows. III. Phosphorus. J. agric. Sci., Camb. 73, 215–22.CrossRefGoogle Scholar
Paquay, R., De Baere, R. & Lousse, A. (1966). Recherches statistiques sur la digestibilité des éléments de la ration. Annls Méd. vét. 110, 13–55.Google Scholar
Paquay, R., Lomba, F., Lousse, A. (1968). Statistical research on the fate of dietary mineral elements in dry and lactating cows. I. Calcium. J. agric. Sci., Camb. 71, 173–80.CrossRefGoogle Scholar