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A note on production responses of lactating ewes to calcium soaps of fatty acids

Published online by Cambridge University Press:  02 September 2010

D. Sklan
Affiliation:
Faculty of Agriculture, Hebrew University, PO Box 12, Rehovot, 76–100, Israel
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Abstract

Productive and metabolic responses were determined in ewes given diets containing calcium soaps of fatty acids for a period of 90 days after lambing as compared with ewes given a control diet.

Yield of milk and milk fat, milk protein and milk lactose were increased over the experimental period by feeding calcium soaps. Live-weight changes after lambing were not different in the two experimental treatments. No changes in rumen metabolism were observed when calcium soaps were offered whereas plasma concentrations of protein, glucose, triglycerides, phospholipids and cholesterol were enhanced.

It is concluded that calcium soaps of fatty acids can be included in diets of ewes to increase production of milk and milk solids.

Type
Research Article
Copyright
Copyright © British Society of Animal Science 1992

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References

Allen, P. C. 1988. The effect of eimeria acervulina infection on plasma lipids and lipoproteins in young broiler chicks. Veterinary Parasitology. 30: 1723.CrossRefGoogle ScholarPubMed
Bines, J. A., Brumby, P. E., Stony, J. E., Fulford, R. J. and Braithwaite, G. D. 1978. The effect of protected lipids on nutrient intakes, blood and rumen metabolites and milk secretion in dairy cows in early lactation. Journal of Agricultural Science, Cambridge 91: 135150.CrossRefGoogle Scholar
Brumby, P. E., Stony, J. E., Bines, J. A. and Fulford, R. J. 1978. Utilization of energy for maintenance and production i n dairy cows given protected tallow during early lactation. journal of Agricultural Science, Cambridge 91: 151159.CrossRefGoogle Scholar
Carlson, L. A. and Froberg, S. O. 1967. Blood Iipid and glucose levels during a ten day period of low calorie intake and exercise in man. Metabolism 16: 624630.CrossRefGoogle Scholar
Coulomb, J. J. and Favreau, L. 1963. A new simple semimicro method for the colorimetric determination of urea. Clinical Chemistry 9: 102109.CrossRefGoogle Scholar
Ferguson, J. D., Sklan, D., Chalupa, W. and Kronfeld, D. S. 1990. Effects of hard fats on the in vitro and in vivo rumen fermentation, milk production and reproduction in dairy cows. Journal of Dairy Science 73: 28642879.CrossRefGoogle ScholarPubMed
Kronfeld, D. S. 1976. The potential importance of the proportions of glucogenic, lipogenic and aminogenic nutrients in regard to the health and productivity of dairy cows. Advances in Animal Nutrition and Physiology 7: 715.Google Scholar
Ohajuruka, O. A., Wu, Z. G. and Palmquist, D. L. 1991. Ruminal metabolism, fiber and protein digestion by lactating cows fed calcium soap or animal-vegetable fat. Journal of Dairy Science. 74: 26012609.CrossRefGoogle ScholarPubMed
Perez Hernandez, M., Robinson, J. J., Aitken, R. P. and Fraser, C. 1986. The effect of dietary supplements of protected fat on the yield and fat concentration of ewes milk and on lamb growth rate. Animal Production 42: 455 (abstr.).Google Scholar
Schneider, P., Sklan, D., Chalupa, W. and Kronfeld, D. S. 1988. Feeding calcium salts of fatty acids to lactating cows. Journal of Dairy Science 71: 21432150.CrossRefGoogle Scholar
Sklan, D., Bogin, E., Avidar, Y. and Gur-Arie, S. 1989. Feeding calcium soaps of fatty acids to lactating cows: effect on production, body condition and blood lipids. Journal of Dairy Research 56: 675681.CrossRefGoogle ScholarPubMed
Sklan, D., Moallem, U. and Folman, Y. 1991. Effect of feeding calcium soaps of fatty acids on production and reproductive responses in high producing lactating cows. Journal of Dairy Science 74: 510517.CrossRefGoogle ScholarPubMed
Statistical Analysis Systems Institute. 1986. SAS. 6th ed. SAS Institute Inc., Cary, NC.Google Scholar
White, A. and Fletcher, T. C. 1986. Serum cortisol, glucose and lipids in plaice (Pleuronectes platessa L.) exposed to starvation and aquarium stress. Comparative Biochemistry and Physiology 84A: 649658.CrossRefGoogle Scholar