Effect of different types and levels of fat addition and pellet binders on physical pellet quality of broiler feeds

Abstract

Two experiments were conducted to evaluate the effects of different types and levels of mixer-added fat (soybean oil: SO and calcium fat powder: CFP) and pellet binders (PBs: calcium lignosulfonate (CaLS) and bentonite (Ben)) on physical pellet quality (PPQ) parameters. PPQ included pellet durability index (PDI), pellet hardness, and pellet length of broiler diets processed under short-term conditioning. The first experiment had 4 treatments arranged as a 2 × 2 factorial with 2 types (SO and CFP) and 2 levels (1.5 and 3%) of mixer-added fat. In the second experiment, 22 treatments, combinations of 2 types of mixer-added fat (SO and CFP) at 3 levels (0, 1.5 and 3%) and 2 types of PB (CaLS = 0, 0.5, and 1% and Ben = 0, 1, and 2%), were arranged by a completely randomized design. PDI was measured by 2 devices: Pfost Tumbling box (PDIT) and Holmen NHP tester (PDIH). The results showed that the diets containing 1.5% CFP without PB had significant differences in all PPQ parameters. The results revealed that adding 0.5% CaLS to the 3% SO diets significantly enhanced PDIH, pellet hardness, and pellet length compared to other treatments. Moreover, 1.5% CFP diets with 2% Ben had significantly higher PDIT, PDIH, and pellet hardness among the treatments. Based on contour plots, different levels of Ben in the diets containing SO failed to create optimum PDIT values (>96%). However, 1.5 to 2.50% CFP diets without Ben had the optimum PDIT values. The optimum PDIT value was achieved by the diets containing 3% SO in the range of 0.21 to 0.56% CaLS. Furthermore, adding 0.5% CaLS to the diets containing less than 2.86% SO resulted in suboptimal PDIT values (<96%). The diets containing 1.5 to 2.50% CFP without CaLS had the optimum PDIT values. However, increasing CaLS levels more than 0.38% led to suboptimal PDIT values. Overall, these results indicated that the selection of appropriate PBs should be based on type and level of mixer-added fat.

Effect of Organic Pellet Binders on Physic and Nutrient Quality as an Eco Feed Product

“…Bentonite as good as binder type with molasses because of water content inside feed ingredient as a matter of feed pellet. Other experiment also reported that adding pellet binder 0 to 3 % significantly improved pellet durability index (PDI) [17] Using molasses 5% doses has highest effect on pile density and pile compaction density. It also effect to highest durability pellet value.…”

The effect of gradually decreasing the dietary energy content, at constant or increased lysine:energy ratio on broiler performance, carcass yield, and body composition

“…With a reduction of ∼30% of the oil content in the finisher diets in treatments 5 and 9, the pellet hardness was the highest (2.6 and 2.3 kPa, respectively) and about double the pellet hardness of the control treatment. Studies on the relation between added oil/fat content in the diet and pellet quality have reported that 3 to 6% added oil is ideal for optimizing pellet durability without excessive pellet hardness ( Briggs et al, 1999 ; Moritz et al, 2002 ; Mohammadi et al, 2019 ); pellet integrity is significantly compromised when the oil content surpasses 7.5% ( Briggs et al, 1999 ). Thus, the reduction in oil content in the low AME diets resulted in acceptable pellet quality.…”

Flight toward Sustainability in Poultry Nutrition with Black Soldier Fly Larvae

“…The notable fat content of BSFL significantly influences poultry feed formulation, necessitating adjustments in nutrient balance and energy density [46]. This high level of fat can also impact pellet processing, affecting aspects such as pellet stability and nutrient preservation [47]. Consequently, incorporating BSFL into poultry diets requires careful consideration of these factors.…”