Seagrasses as potential source of fodder for livestock: Complete proximate and gas chromatography-mass spectrometry (GCMS) analysis
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Date
2019
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Abstract
The present study analysed the nutritional values of Cymodocea serrulata (R.Br.) Asch. & Magnus, Syringodium
isoetifolium (Asch.) Dandy and Enhalus acoroides (L.f.) Royle by complete proximate analysis and determined the
phytocompounds present in them by using Gas Chromatography-Mass Spectrometry (GC-MS) technique. The complete
proximate analysis revealed a higher content of crude protein, crude fibre, calcium, phosphorus and energy in all the
three grasses under study. However E. acoroides contained higher content of ether extract, lower level of acid
insoluble ash and gross energy compared to the other two grasses. The GC-MS analysis showed the presence of decane,
sucrose, tetradecanoic acid, deoxyspergualin, n-hexadecanoic acid, phytol, ricinoleic acid, docosyl isobutyl ether and
squalene in C. serrulata and decane, sucrose, phytol, 9,12,15-octadecatrienoic acid, (Z,Z,Z)-Triethylene glycol
monododecyl ether and Hexadecanoic acid and 2-hydroxy-1-(hydroxymethyl) ethyl ester in S. isoetifolium. Ethanol
extract of E. acoroides revealed the existence of decane, epoxomicin, tetradecanoic acid, n-hexadecanoic acid,
phytol, linoelaidic acid, 9,12,15-octadecatrienoic acid, (Z,Z,Z)-diethylene glycol monododecyl ether, hexadecanoic
acid, 1-(hydroxymethyl)-1,2-ethanediyl ester and 15,17,19,21-hexatriacontatetrayne in GC-MS study. All the three
seagrasses under study were found to be the rich sources of crude protein, energy, minerals and phytocompounds of
varied pharmacological properties which can enable them to be an eligible source of alternative nutritional supplements
for ruminants in the areas adjacent to coastal region of Ramanathapuram district, where fodder scarcity exists.