Potentialities of the Asian Watergrass ( Hygroryza aristata ) as Feed in Aquaculture

Md. Moazzem Hossain, Md. Shahjahan, Saleha Khan, Abdul Shukor Juraimi, Md. Kamal Uddin and Mahmudul Hasan
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Md. Moazzem Hossain: Laboratory of Fish Ecophysiology, Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
Md. Shahjahan: Laboratory of Fish Ecophysiology, Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
Saleha Khan: Laboratory of Fish Ecophysiology, Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
Abdul Shukor Juraimi: Department of Crop Science, Universiti Putra Malaysia (UPM), Serdang 43400, Selangor, Malaysia
Md. Kamal Uddin: Department of Land Management, Universiti Putra Malaysia (UPM), Serdang 43400, Selangor, Malaysia
Mahmudul Hasan: Department of Crop Science, Universiti Putra Malaysia (UPM), Serdang 43400, Selangor, Malaysia

Sustainability, 2021, vol. 13, issue 12, 1-14

Abstract: Asian watergrass ( Hygroryza aristata ) is an herbaceous glabrous aquatic-rooted floating grass naturally growing in the tidally inundated coastal marshes, beels and canals. The ecology and growth performance of Asian watergrass were evaluated in the coastal wetland (CWL), in an artificially created canal (ACC) within the coastal wetland and in the university research ponds (URP). The study was conducted with three replications in each area. The proximate compositions of the leaves, roots and stems of the grass were determined. Important water and soil quality parameters were found favorable for the growth and production of Asian watergrass. The growth performance and total production of the grass were significantly higher in ACC (length: 2.78 m and weight: 386.86 metric ton ha −1 ) in comparison with those in CWL (2.36 m and 256.67 metric ton ha −1 ) and URP (2.22 m and 137.10 metric ton ha −1 ). Higher content of crude protein was found in leaves (17.49%) followed by roots (12.17%) and stems (9.39%), while the minerals (ash) and fiber contents were found higher in stems (25.68% and 9.53%) in comparison with those in leaves and roots. The findings indicate that the coastal wetlands of Bangladesh having available nutrients in both water and soil are suitable for higher growth and production of Asian watergrass. Considering the nutrient compositions, the Asian watergrass may be an important potential source of feed ingredient that may be used as fish feed in aquaculture throughout the world.

Keywords: Hygroryza aristata; coastal wetland; nutrients; proximate composition; fish feed (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
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