Comparison of methods for the analysis of New Zealand sea lion,Phocarctos hookeri,milk |
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| Authors: | F G Riet Saprtza N Lopez‐Villalobos D D S Mackenzie P J Duignan A MacGibbon B L Chilvers |
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| Institution: | 1. Institute of Veterinary, Animal and Biomedical Sciences (IVABS) , Massey University , Private Bag 11 222, Palmerston North, New Zealand;2. Cetáceos Uruguay, Sección Etología, Facultad de Ciencias (UDELAR) , Iguá 4225, C.P 11400, Montevideo, Uruguay E-mail: frietsapriza@adinet.com.uy;3. Institute of Veterinary, Animal and Biomedical Sciences (IVABS) , Massey University , Private Bag 11 222, Palmerston North, New Zealand;4. Institute of Food Nutrition and Human Health , Massey University , Palmerston North, New Zealand;5. Faculty of Veterinary Science , University of Melbourne , 250 Princes Highway, Wernbee, VIC, 3030, Australia;6. New Zealand Wildlife Health Centre, IVABS , Massey University , Private Bag 11 222, Palmerston North, New Zealand;7. Fonterra Research Centre , Private Bag 11 029, Dairy Farm Road, Palmerston North, New Zealand;8. Aquatic and Threats Unit, Department of Conservation , P.O. Box 10 420, Wellington, New Zealand |
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| Abstract: | Abstract The milk composition of New Zealand sea lion, Phocarctos hookeri, was determined using standard analytical methods, a MilkoScan? FT 120 and an accelerated solvent extractor (ASE) for fat concentration. The results for fat, protein and total solid concentrations between the different analytical methods were assessed using different measures of statistical fitness including coefficient of determination, concordance correlation coefficient, mean prediction error, and intraclass correlation coefficient. The repeatability and reliability of the results obtained with the calibrated MilkoScan? FT 120 were comparable with those obtained using standard methods, the Roese‐Gottlieb method for fat, Kjeldahl method for protein and gravimetric method for total solids. The MilkoScan? FT 120s are fast and cost‐effective and are widely used in dairy laboratories around the world, which should make them readily accessible to ecologists/biologists studying the milk composition of non‐domestic animals. |
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| Keywords: | pinniped fat protein solids MilkoScan? FT 120 Roese‐Gottlieb |
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