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Dietary verbascoside supplementation in donkeys: effects on milk fatty acid profile during lactation, and serum biochemical parameters and oxidative markers

Published online by Cambridge University Press:  07 March 2017

A. G. D’Alessandro ,
F. Vizzarri ,
M. Palazzo  and
G. Martemucci
A. G. D’Alessandro*
Affiliation:
Dipartimento di Scienze Agro-Ambientali e Territoriali, University of Bari, Via G. Amendola 165/A, 70126 Bari, Italy
F. Vizzarri
Affiliation:
Dipartimento Agricoltura, Ambiente e Alimenti, University of Molise, Via De Sanctis snc, 86100 Campobasso, Italy
M. Palazzo
Affiliation:
Dipartimento Agricoltura, Ambiente e Alimenti, University of Molise, Via De Sanctis snc, 86100 Campobasso, Italy
G. Martemucci
Affiliation:
Dipartimento di Scienze Agro-Ambientali e Territoriali, University of Bari, Via G. Amendola 165/A, 70126 Bari, Italy
*
†E-mail: [email protected]
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Abstract

Various uses of donkeys’ milk have been recently proposed for human consumption on the basis of its nutritional characteristics. Improvements in milk fatty acid profile and animal oxidative status can be induced through dietary supplementation of phenolic compounds. The study aimed to evaluate in donkeys the effects of dietary supplementation with verbascoside (VB) on: (i) the fatty acid profile and vitamins A and E contents of milk during a whole lactation, and (ii) blood biochemical parameters and markers of oxidative status of the animals. At foaling, 12 lactating jennies were subdivided into two groups (n 6): control, without VB supplement; VB, receiving a lipid-encapsulated VB supplement. Gross composition, fatty acid profile and vitamins A and E contents in milk were assessed monthly over the 6 months of lactation. Serum total cholesterol, high-density lipoproteins cholesterol and low-density lipoproteins cholesterol, tryglicerides, non-esterified fatty acid, bilirubin, alanine aminotransferase (ALT), aspartate aminotransferase, reactive oxygen metabolites, thiobarbituric acid reactive substances (TBARs), vitamin A and vitamin E were evaluated at 8 days after foaling (D0) and then at D90, D105 and D120 of lactation. In milk, the VB supplementation decreased the saturated fatty acids (P<0.05) and increased the monounsaturated fatty acids (P<0.05), and vitamins A and E (P<0.01) values. On the serum parameters, the VB supplementation decreased total cholesterol (P<0.01), tryglicerides, bilirubin, ALT and TBARs, and increased (P<0.01) vitamin E. In conclusion, the VB dietary supplementation affects the nutritional quality of donkey’s milk with a benefit on the oxidative status and serum lipidic profile of the animals.

Keywords

donkeyverbascoside supplementmilkfatty acid profileblood biochemical parameters
Type
Research Article
Information
animal , Volume 11 , Issue 9 , September 2017 , pp. 1505 - 1512
Copyright
© The Animal Consortium 2017 

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