Hostname: page-component-cd9895bd7-7cvxr Total loading time: 0 Render date: 2024-12-27T12:20:46.628Z Has data issue: false hasContentIssue false
  • English
  • Français

Effects of abomasal infusions of sodium caseinate, a hydrolysate of casein or a corresponding mixture of free amino acids on milk yield and composition in dairy cows

Published online by Cambridge University Press:  01 June 2009

Jai-Jun Choung  and
David G. Chamberlain
Jai-Jun Choung
Affiliation:
Hannah Research Institute, Ayr, KA6 5HL, UK
David G. Chamberlain
Affiliation:
Hannah Research Institute, Ayr, KA6 5HL, UK
Get access Rights & Permissions [Opens in a new window]

Summary

The effects of the form in which amino acids are presented to the abomasum on the milk production of dairy cows receiving a basal diet of grass silage and a barley-based supplement were examined in two experiments. Effects of abomasal infusions of sodium caseinate were compared with the effects of corresponding levels of either an enzymic hydrolysate of casein (Expt 1) or a corresponding mixture of free amino acids (FAA; Expt 2). In Expt 1, although the yield of protein in milk increased progressively with each level of infusion, the yields of protein were greater for the caseinate than for the hydrolysate. Again, in Expt 2, for milk protein yield, sodium caseinate was superior to FAA at the lower level of infusion. In both experiments, the hydrolysate and FAA treatments were associated with higher concentrations of fat in the milk. There were indications of differences in the pattern of secretion of glucagon between the caseinate and FAA treatments. It is concluded that the differences between treatments relate either to the kinetics of absorption of amino acid residues or to the action of bioactive peptides released during digestion of casein.

Type
Original articles
Information
Journal of Dairy Research , Volume 62 , Issue 1 , February 1995 , pp. 29 - 37
Copyright
Copyright © Proprietors of Journal of Dairy Research 1995

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Adibi, S. A. & Kim, Y. S. 1981 Peptide absorption and hydrolysis. In Physiology of the Gastrointestinal Tract, vol. 2, pp. 1073–1095 (Ed. Johnson, L. R.). New York: Raven PressGoogle Scholar
Backwell, F. R. C., Bequette, B. J., Metcalf, J. A., Wray-Cahen, D., Crompton, L., Beever, D. E., Lobley, G. E. & Macrae, J. C. 1994 Peptide utilization by the mammary gland of lactating goats. Animal Production (in the press)Google Scholar
Brust, P., Köhler, R., Brandsch, M., Born, I., Hartrodt, B., Neubert, K. & Gebhardt, G. 1991 Effects of dietary β-casomorphins on the intestinal transport of amino acids and on plasma insulin concentrations in rats. Zoologisches Jahrblatt für Physiologie 95 97–107Google Scholar
Chamberlain, D. G., Choung, J. -J. & Robertson, S. 1992 Protein nutrition of dairy cows receiving grass silage diets. Effects of feeding a protein supplement of unbalanced amino acid composition. Journal of the Science of Food and Agriculture 60 425–430CrossRefGoogle Scholar
Choung, J.-J. & Chamberlain, D. G. 1993 Effects on milk yield and composition of intra-abomasal infusions of sodium caseinate, an enzymic hydrolysate of casein or soya-protein isolate in dairy cows. Journal of Dairy Research 60 133–138CrossRefGoogle Scholar
Choung, J. -J., Chamberlain, D. G., Thomas, P. C. & Bradbury, I. 1990 The effects of intraruminal infusions of urea on the voluntary intake and milk production of cows receiving grass silage diets. Journal of Dairy Research 57 455–464CrossRefGoogle ScholarPubMed
Derrig, R. G., Clark, J. H. & Davis, C. L. 1974 Effect of abomasal infusion of sodium caseinate on milk yield, nitrogen utilization and amino acid nutrition of the dairy cow. Journal of Nutrition 104 151–159CrossRefGoogle ScholarPubMed
Ebihara, K., Imamura, Y. & Kiriyama, S. 1979 Effect of dietary mineral composition on nutritional equivalency of amino acid mixtures and casein in rats. Journal of Nutrition 109 2106–2116CrossRefGoogle ScholarPubMed
Hara, H., Funabiki, R., Iwata, M. & Yamazaki, K. -I. 1984 Portal absorption of small peptides in rats under unrestrained conditions. Journal of Nutrition 114 1122–1129CrossRefGoogle ScholarPubMed
Hara, H., Yamada, M. & Kiriyama, S. 1992 Growth potencies and effects on digestive functions of an amino acid and a casein diet in rats of three strains. Bioscience Biotechnology and Biochemistry 56 454–459CrossRefGoogle Scholar
Kelly, N. C. & Thomas, P. C. 1978 The nutritive value of silages. Energy metabolism in sheep receiving diets of grass silage or grass silage and barley. British Journal of Nutrition 40 205–219CrossRefGoogle ScholarPubMed
MacLeod, N. A., Corrigall, W., Stirton, R. A. & Ørskov, E. R. 1982 Intragastric infusion of nutrients in cattle. British Journal of Nutrition 47 547–552CrossRefGoogle ScholarPubMed
Payne, R. W., Lane, P. W., Ainsley, H. E., Bricknell, K. E., Digby, P. G. N., Harding, S. A., Leech, P. K., Simpson, H. R., Todd, A. P., Verrier, P. J. & White, R. P. 1987 Genstat 5 Reference Manual. Oxford: Clarendon Press.Google Scholar
Rérat, A., Simoes Nunes, C., Mendy, F. & Roger, L. 1988 Amino acid absorption and production of pancreatic hormones in non-anaesthetized pigs after duodenal infusions of a milk enzymic hydrolysate or of free amino acids. British Journal of Nutrition 60 121–136CrossRefGoogle ScholarPubMed