ORIGINAL PAPER
Chemical composition, antioxidant activity and bioactive compounds of vegetation species ingested by goats on semiarid rangelands
1 |
Animal Nutrition Department, National Institute of Medical Sciences and Nutrition “Salvador Zubirán”; D.F, 14000, Mexico |
2 |
Tropical Forages Program, International Center for Tropical Agriculture (CIAT); Cali, 6713, Colombia |
3 |
Faculty of Life Sciences, Agricultural Sciences, Rhine-Waal University of Applied Sciences; Kleve 47533, Germany |
4 |
Faculty of Chemistry, National Autonomous University of Mexico (UNAM); D.F, 04510, Mexico |
5 |
Direction of Nutrition, National Institute of Medical Sciences and Nutrition “Salvador Zubirán”; DF, 14000, Mexico |
J. Anim. Feed Sci. 2013;22(2):106–115
Publication date: 2013-06-10
KEYWORDS
ABSTRACT
The first goal of this study was to evaluate the chemical composition
of vegetation consumed by goats on semiarid rangelands. Secondly,
antioxidant activity and identified bioactive compounds of this vegetation were
estimated. Twenty-five samples were analysed, including leaves, stems, fruits,
or a combination of them. Chemical composition demonstrated large differences
among species and smaller differences within species. Some species had
high protein contents, e.g. Acacia schaffneri, Celtis pallida and Prosopis laevigata.
Methanol:water was the best solution to extract bioactive compounds,
which we found in larger amounts in complete plants and stems than in fruits
and leaves. A. farnesiana pods had the largest polyphenol contents, whereas
A. farnesiana, A. schaffneri, Leptochloa dubia and others showed the best antioxidant
activity. A positive correlation was observed between antioxidant activity
and polyphenol-flavonoid concentration. Based on these results, it seems
necessary to study in more detail some species, e.g. the fruits of Acacia farnesiana
and A. schaffneri, to better understand their implications for ruminant
feeding and nutrition.
CORRESPONDING AUTHOR
D. C. Puga
Animal Nutrition Department, National Institute of Medical Sciences and Nutrition “Salvador Zubirán”; D.F, 14000, Mexico
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