Influence of emulsifier blends having different hydrophilic-lipophilic balance value on growth performance, nutrient digestibility, serum lipid profiles, and meat quality of broilers

Abstract

Energy is a major cost component in diets for poultry. We hypothesized that the supplementation of emulsifier blends in broiler diets may contribute to the efficient utilization of energy and in increasing fat digestibility, thereby improving performance. To test our hypothesis, an experiment was conducted to evaluate the effect of a blend of emulsifiers on growth performance, nutrient digestibility, serum lipid profiles, and meat quality of broilers. A total of 768 1-d-old Ross 308 male broiler chicks with an average initial body weight of 45.55 ± 0.34 g were used in a 35 days feeding trial. Broilers were sorted into 4 treatments, 12 replications per treatment, and 16 birds per pen. Dietary treatments consisted of corn-soybean meal based basal diet and the basal diet supplemented with 0.05%, 0.075%, and 0.10% emulsifier. As a result of this study, the inclusion of 0.05%, 0.075%, and 0.10% emulsifier blends (sodium stearoyl-2-lactylate (SSL) and Tween 20) in the basal diet linearly increased (P = 0.0001) body weight gain (BWG) and improved feed conversion ratio (FCR) (linear effect P = 0.0001) on d 7 to 21, d 21 to 35 as well as overall. Broilers fed with different levels of emulsifier blends also showed a linear increment (P < 0.05) in dry matter (DM) and fat digestibility. A trend of linear reduction (P = 0.051) in low density lipoprotein (LDL) in the serum of broilers fed emulsifier blend was observed. The lightness value of breast muscle color linearly increased (P = 0.001), the redness and yellowness values tended to increase (P = 0.072 and P = 0.094 respectively), and the water holding capacity (WHC) showed trends in reduction (P = 0.078) with an increase in the level of emulsifier blends. With regards to relative organ weight, spleen weight was linearly (P = 0.001) reduced with the increase in the supplemental levels of emulsifier blends. A positive correlation between emulsifier content in the diet and BWG, DM and fat digestibility, and breast muscle color indices, were also observed. In conclusion, emulsifier blend supplementation positively influenced growth performance and nutrient digestibility in broiler chickens.

Effect of dietary globin, a natural emulsifier, on the growth performance and digestive efficiency of broiler chickens

“…Our results are in agreement with those reported by Arnouts and Lippens (2006) who observed a tendency of decreased FCR in the grower-finisher periods but no significant effect in the starter period, when 0.05% Globin was added to the feed. Other studies have found a lower FCR and a higher fat digestibility during grower and finisher periods when other emulsifiers were used in broiler diets (Kaczmarek et al 2015;Upadhaya et al 2018). In contrast to the present study, Arnouts and Lippens (2006), Kaczmarek et al (2015) and Upadhaya et al (2018) did not find any effects on performance or digestibility during the starter period.…”

“…Other studies have found a lower FCR and a higher fat digestibility during grower and finisher periods when other emulsifiers were used in broiler diets (Kaczmarek et al 2015;Upadhaya et al 2018). In contrast to the present study, Arnouts and Lippens (2006), Kaczmarek et al (2015) and Upadhaya et al (2018) did not find any effects on performance or digestibility during the starter period. The differences in effects on performance and fat digestibility as a result of dietary emulsifiers could be related to the dietary content of the saturated and unsaturated FAs, the sex of the birds and/or the type and dosage of the emulsifier.…”

“…Globin dietary supplementation did not affect aD CP , but a higher aD fat and aM CP were observed in the Globin group during the starter period. These results are in line with those observed by Upadhaya et al (2018), who found a similar protein digestibility, a higher DM and a higher fat digestibility in 35-day old broilers fed a diet supplemented with a commercial blend of emulsifiers (0.05 up to 0.10% supplementation). In a study that included a basal broiler diet supplemented with glycerol polyethylene glycol ricinoleate at concentrations of 1% and 2% of added fat, Roy et al (2010) found positive effects of emulsifiers on the digestion of fat as well as other nutrients.…”

“…The differences in effects on performance and fat digestibility as a result of dietary emulsifiers could be related to the dietary content of the saturated and unsaturated FAs, the sex of the birds and/or the type and dosage of the emulsifier. The dietary fat in the study by Arnouts and Lippens (2006) included palm fat (between 73 and 64% of the total fat ingredients during the starter and finisher periods, respectively), Kaczmarek et al (2015) used rapeseed oil and lard, Upadhaya et al (2018) used tallow fat as the major fat source, while only soybean oil was used as the fat ingredient in the present study. Zaefarian et al (2015), who used either soy oil or tallow as dietary fat sources, reported higher feed intakes and weight gains between 1 and 20 days of age, and for the whole rearing period during the early rearing period in broilers fed diets containing a lysolecithin emulsifier.…”

Effect of calcium stearoyl-2 lactylate and lipase supplementation on growth performance, gut health, and nutrient digestibility of broiler chickens

“…However, limited research conducted with the exogenous emulsifiers and inconsistent results were noted with broiler studies. A couple of studies observed improved growth performance and nutrient digestibility of the broiler chickens [6,7]. Contrary, Cho et al [8] and Zampiga et al [9] reported emulsifier had no such effect on growth performance in broiler chickens.…”