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Chemical composition of milk from a herd of Norwegian goats

Published online by Cambridge University Press:  01 June 2009

Johanne Brendehaug  and
Roger K. Abrahamsen
Johanne Brendehaug
Affiliation:
Department of Dairy and Food Industries, Agricultural University of Norway, 1432 Ås-NLH, Norway
Roger K. Abrahamsen
Affiliation:
Department of Dairy and Food Industries, Agricultural University of Norway, 1432 Ås-NLH, Norway
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Summary

The chemical composition of Norwegian bulk collected goats' milk from the University herd was analysed during one lactation period (30 weeks, 20 samples during 1983). There was considerable variation in chemical composition during the year. Fat content decreased over the first 4 months of lactation and increased during the mountain pasture period. Protein concentration decreased during the first 4 months, and then increased until the end of lactation. Lactose concentration decreased throughout lactation. Casein nitrogen (casein N) was highest at mid lactation and lowest at the beginning and end of lactation. β-Lactoglobulin N showed the opposite trend. Citrate content showed a significantly quadratic decrease and total ash content an increase with advancing lactation. Mutual significant correlations between total P, K, Na, Ca and Mg were calculated, and all increased throughout lactation. There was significant positive correlation between concentrations of individual medium-chain fatty acids and stage of lactation. They remained more or less constant during the first part of the lactation, decreased to minima when the goats were on pasture, and increased during the last phase of lactation. Concentration of C16 fatty acid was negatively correlated with C18 and C18:1. Goat flavour intensity score and quality flavour score were highest at mid lactation, and positively correlated with the acid degree value.

Type
Original Articles
Information
Journal of Dairy Research , Volume 53 , Issue 2 , May 1986 , pp. 211 - 221
Copyright
Copyright © Proprietors of Journal of Dairy Research 1986

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References

REFERENCES

Akinsoyinu, A. O. & Akinyele, I. O. 1979 Major elements in milk of the West African dwarf goats as affected by stage of lactation. Journal of Dairy Research 46 427–431CrossRefGoogle ScholarPubMed
Antila, V. & Kankare, V. 1983 The fatty acid composition of milk lipids. Milchwissenschaft 38 478–481Google Scholar
Aschaffenburg, R. & Drewry, J. 1959 New procedure for the routine determination of the various non-casein proteins of milk. 15th International Dairy Congress. London 3 1631–1637Google Scholar
Bakke, M., Steine, T. A. & Eggum, AA. 1976 Relationship between content of free fatty acids and flavour score in goat milk. Agricultural University of Norway. Department of Animal Genetics and Breeding Report no. 408 8pp.Google Scholar
Bakke, H., Steine, T. & Eggum, Aa. 1977 Flavour score and content of free fatty acids in goat milk. Acta Agricultural Scandinavica 27 245–249CrossRefGoogle Scholar
Bakkene, G. & Steinsholt, K. 1975 [Milk of high and low flavour intensity for the manufacture of goats' milk mysost (33 + fat in DM).] Meieriposten 64 45–55Google Scholar
Boltz, D. F. & Howell, J. A. 1978 Colorimetric determination of nonmetals. In Chemical Analysis, Vol. 8. (Eds Elving, P. J., Winefordner, J. D. and Kolthoff, J. M.) New York: John Wiley & Sons. Inc.Google Scholar
Bråthen, G. 1980 [Lipolysis in milk. Automated determination of the acidity value with the AutoAnalyzer, and assessment of results.] Meieriposten 69 345–352Google Scholar
Clarke, P. L., Thomson, E. M. & Thompson, G. E. 1976 Acute cold exposure and milk secretion in the goat. Journal of Physiology 263 176P–177PGoogle Scholar
Devendra, C. 1972 The composition of milk of British Alpine and Anglo-Nubian goats imported into Trinidad. Journal of Dairy Research 39 381–385CrossRefGoogle ScholarPubMed
Faulkner, A., Blatohford, D. R., White, J. M. & Peaker, M. 1982 Changes in the concentrations of metabolites in milk at the onset and cessation of lactation in the goat. Journal of Dairy Research 49 399–405CrossRefGoogle ScholarPubMed
Faulkner, A. & Peaker, M. 1982 Reviews of the progress of Dairy Science: Secretion of citrate into milk. Journal of Dairy Research 49 159–169CrossRefGoogle ScholarPubMed
Fyksen, S. & Steinsholt, K. 1974 Strong or weak flavour in goats' milk for cheesemaking? Agricultural University of Norway Dairy Research Institute Report no. 183 16pp.Google Scholar
García Olmedo, R., Carballido, A. & Arnáez Ortiz, M. 1979 [Study of the fat in goats milk. II Major fatty acids and their ratios.] Anales de Bromatología 31 227–270Google Scholar
International Dairy Federation 1962 Determination of the total nitrogen content of milk by the Kjeldahl method. IDF Standard no. 20Google Scholar
International Dairy Federation 1969 Determination of the fat content of milk. Reference method. IDF Standard no. 1AGoogle Scholar
Jenness, R. 1980 Composition and characteristics of goat milk: Review 1968–1979. Journal of Dairy Science 63 1605–1630CrossRefGoogle Scholar
Karijord, Ø., Standal, N. & Syrstad, O.. 1982 Sources of variation in composition of milk fat. Zeitschrift für Tierzüchtung und Züchtungsbiologie 99 81–93CrossRefGoogle Scholar
Knowles, F. & Watkin, J. E. 1938 The milk of the goat under English conditions. Journal of Dairy Research 9 153–165CrossRefGoogle Scholar
Konar, A., Thomas, P. C. & Rook, J. A. F. 1971 The concentrations of some water-soluble constituents in the milks of cows, sows, ewes and goats. Journal of Dairy Research 38 333–341CrossRefGoogle Scholar
Korvald, T. 1958 [Flavour compounds in goat milk and goat cheese. I. Occurrence of the flavour in the different fractions of the milk.] Meieriposten 47 175–179, 183–187, 209–212.Google Scholar
Loewenstein, M. 1982 Dairy goat milk and factors affecting it. Proceedings of the third International Conference of Coat Production and Disease, USA226–236Google Scholar
Mahieu, H., Le Jaouen, J. C., Luquet, F. M. & Mouillet, L. 1977 [Comparative study of the composition and contamination of milk from cows, ewes and goats. I. Farm milk in 1972, 1973 and 1974.] Lait, 57 287–300CrossRefGoogle Scholar
Maraval, B. & Vignon, B. 1982 [Development of mineral composition in goats' milk in early lactation.] Milchwissenschaft 37 464–466Google Scholar
Nordic Committee on Food Analysis 1953 [Determination of dry matter, ash, chloride and acid degree value of milk, cream and condensed milk.] Nr. 11. UppsalaGoogle Scholar
Parkash, S. & Jenness, R. 1968 The composition and characteristics of goats' milk: a review. Dairy Science Abstracts 30 67–87Google Scholar
Peaker, M., Faulkner, A. & Blatchford, D. R. 1981 Changes in milk citrate concentration during lactation in the goat. Journal of Dairy Research 48 357–361CrossRefGoogle ScholarPubMed
Ramos, M. & Juarez, M. 1981 The composition of ewe's and goat's milk. International Dairy Federation Bulletin Document 140Google Scholar
Rysstad, G. & Abrahamsen, R. K. 1983 Fermentation of goats' milk by two DL-type mixed strain starters. Journal of Dairy Research 50 349–356CrossRefGoogle Scholar
Rønningen, K. 1965 [Relationship between yield, chemical content and flavour in goat milk.] Scientific reports from the Agricultural College of Norway 44, 29.Google Scholar
Skjevdal, T. 1972 Kraftfórtilskudd til mjølkegeiter på fjellbeite. Agricultural University of Norway Department of Animal Nutrition Report no. 407Google Scholar
Svensen, A. 1967 Fatty acid composition of Norwegian butterfat and some other fats. Agricultural University of Norway Dairy Research Institute Report no. 130Google Scholar
Technicon Instruments Corporation 1974 ‘Chloride in water and seawater (range 0, 4–2, 0 g/1)’. Method No. 217–72 W/A. Technicon Autoanalyzer Methodology, Tarrytown, NY:Technicon Instruments Corp.Google Scholar
Trodahl, S., Skjevdal, T. & Steine, T. A. 1981 Goats in cold and temperate climates. In Goat Production, pp. 489–513. (Ed. Gall, C.) London: Academic PressGoogle Scholar
Uusi-Rauva, E., Ali-yrkkø, S. & Antila, M. 1970 [Composition of Finnish goats' milk.] Suomen Kemistilehti B 43 178–182Google Scholar
Valen, A. & Valen, I. 1950 [Composition of cows' and goats' milk received at Norwegian dairies.] Meieriposten 39 793–797, 816–820Google Scholar