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Fatty-acid, amino-acid and mineral composition of two milk replacers for marsupials

Citation

Chuang, L-T and Pinfold, TL and Hu, H-Y and Chen, Y-S and Schulze, J and Presley, JM and Irons, G and Glew, RH, Fatty-acid, amino-acid and mineral composition of two milk replacers for marsupials, International Zoo Yearbook, 47, (1) pp. 190-199. ISSN 0074-9664 (2013) [Refereed Article]

Copyright Statement

Copyright 2013 The Authors. International Zoo Yearbook Copyright 2013 The Zoological Society of London

DOI: doi:10.1111/izy.12014

Abstract

Although milk replacers are widely used to feed orphaned and injured marsupial joeys in Australia, little is known about the nutrient composition of these foods. We analysed two milk substitutes, Di-Vetelact (DiV) and Wombaroo Kangaroo (Wom) [milk stage >07 (joeys having completed 70% of their pouch life)], for their content of fatty acids, amino acids, and minerals and trace elements. The protein contents of DiV and Wom were 250% and 173% of fresh weight, respectively, and, except for tryptophan, the amino-acid profile compared favourably with three high-quality proteins. The fattyacid content of DiV and Wom was 965% and 176%, respectively. Relative to marsupial milk, linoleic acid (DiV, 183%; Wom, 932%) and a-linolenic acid (DiV, 297%; Wom, 394%) were well represented in both milk replacers, but docosahexaenoic acid was not detected. Comparable amounts of zinc, iron, potassium, calcium, magnesium and phosphorus were present in DiV and Wom, but the copper content of DiV was only 5% that of Wom and manganese was not detected in DiV. These data indicate that two popular marsupial milk replacers contain healthful amounts of many essential nutrients relative to marsupial milk but lack the docosahexaenoic acid that is critical for brain growth and development in mammals.

Item Details

Item Type:Refereed Article
Keywords:amino acids;fatty acids;marsupial;milk replacer;minerals;nutrients;protein;weaning food
Research Division:Biological Sciences
Research Group:Zoology
Research Field:Animal Developmental and Reproductive Biology
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Biological Sciences
Author:Pinfold, TL (Dr Terry Pinfold)
ID Code:88618
Year Published:2013
Deposited By:Menzies Institute for Medical Research
Deposited On:2014-02-11
Last Modified:2014-04-29
Downloads:0

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