Acknowledgement
The authors wish to make an invaluable thanks to Tropical Feed Resources Research and Development Center (TRO-FREC), Department of Animal Science, Faculty of Agriculture, Khon Kaen University, Khon Kaen, Thailand and Thailand Research Fund (TRF) through the Thailand Science Research and Innovation (TSRI) (TRF-IRN57W0002 and TRF-IRG5980010) for their kind support on research fund and facilities.
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