Abstract
Binders are the products that are used to bind, glue or hold the various feed ingredients together in order to maintain pellet integrity. For aqua-culturists, feed manufacturing is an expensive exercise due to the high cost of ingredients along with traditional artificial binders. The use of grain starches as aqua feed binders have advantages which include availability of that binder, nutritional contribution, and minimization of feed cost. A research trial was conducted to test physical properties such as palatability, water stability, dustiness, friability, settling velocity and floatation time of locally available starch i.e. wheat gluten, pea starch and guar gum and to assist their incorporation in on-farm aqua feed. Results revealed that among these three starch, the starch from pea source was proved superior over other two (wheat gluten and guar gum) as all physical quality parameters (dustiness, water stability and friability) revealed better performance of pea starch except pelletability in which guar gum performed best. Although not a single diet proved best in case of flotation time (Tf) and settling velocity (Vset) at varying lengths (6mm, 9mm and 12 mm). This finding indicates the significance of suitable binders for optimal water pollution and sustainable aquaculture. The use of these binders i.e. wheat gluten, pea starch and guar gum in fish feed pellets may also reduce dependence on synthetic binders and minimizes cost.
Highlights
IntroductionExpenses of feed usually constitute a huge cost in Aquaculture (almost 60%) (Sá et al, 2007; Fu, 2005)
Expenses of feed usually constitute a huge cost in Aquaculture (Sá et al, 2007; Fu, 2005)
Minimum value of palatability was observed as 58.82 ± 4.37% by DII, while in case of all other parameters i.e. dustiness, water stability and friability, the least mean values were obtained by DIII as 9.6 ± 3.37%, 53.1 ± 11.37% and 0.86 ± 0.28% respectively, which was bound with pea starch
Summary
Expenses of feed usually constitute a huge cost in Aquaculture (almost 60%) (Sá et al, 2007; Fu, 2005). The related water pollution caused by unutilized feed is one of the major reason of high algal. Starch has an important feature of gelatinization and non-crystallization (Colonna et al, 1984; Gomez and Aguilera, 1984; Chevanan et al, 2007). They act like a binder and increase the durability of pellets
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