Sargassum binderi has been potentially used as laying hen feed since it contains bioactive compounds useful for poultry health. In addition, the high alginate content of S. binderi has made it inappropriate for the poultry diet. Therefore, the alginate content should be reduced before its use in poultry feed. This study aimed to reduce the alginate of S. binderi for use as laying hen feed. The experiment was performed in two phases in a completely randomized design. The first phase included heated S. binderi in the autoclave and the second phase entailed the immersion of S. binderi in whiting filtrate. The treatments in the physical method contained a control group, and four treatment groups heating for 15, 30, 45, and 60 minutes. The treatments in the chemical method had a control group and four treatment groups with immersion periods of 1, 2, 3, and 4 hours. Each treatment was repeated five times, and the investigated parameters were crude protein, total dry matter, organic matter, ash, and alginate, respectively. The heating durations of S. binderi in an autoclave and different immersion periods of S. binderi in whiting filtrate did not significantly affect total dry matter, organic matter, ash, alginate, and crude protein. The results of this study showed that physical treatment (heat treatment) and chemical treatments (whiting filtrate immersion) did not have a significant effect on the alginate content, crude protein, ash, dry matter, and organic matter.
Keywords: Alginate, Heating, Laying hen, Sargassum binderi, Whiting filtrate
