ISSUE FOCUS FEED & ADDITIVE MAGAZINE May 2024 27 out, selecting specific studies that meet the following criteria: • Performed in broilers; • Includes detailed information on the feed formulation and nutrient analysis; • Assess the effect of Excential Energy Plus as productivity enhancer (top-dressing); • Includes a control with a basal diet without emulsifier and iso-caloric with the treatment diet; • Contains data on the growth performance, feed intake and feed efficiency of the birds; • Performed before the end of 2023. As a result, the studies in Table 1 with trial details were taken into consideration. The following performance parameters for both treatments (control diet and Excential Energy Plus diet) were compiled for all studies, when available: • Body weight gain (BWG; g/bird) • Average daily gain (ADG; g/bird/day) • Average daily feed intake (ADFI; g/bird/day) • Feed Conversion Ratio (FCR), recalculated to a body weight of 2500g with the following formula: • European Production Efficiency Factor (EPEF), calculated with the following formula: Finally, the percentage of change when comparing the data in the Excential Energy Plus group with the control group was calculated with the following formula: Those results were compiled for each study according to their diet groups and statistical analysis was performed with ANOVA one-way test (significance level P<0.05). After studying the effect of each trial, these percentages of change were averaged and plotted per treatment and for each performance parameter. To conclude, applying 350 ppm of Excential Energy Plus on-top of a basal broiler diet is expected to numerically improve growth performance by 3.8%, feed efficiency by 3.9% and production efficiency by 6.1%. FCR 2500 = FCR - ( x 0.04) Body weight (g) - 2500) 100 EPEF = x 100 Liveability (%) × Body weight (kg) Days in life × FCR Percentage of change Control group data x 100 Treatment group data Control group data _ = BWG ADG ADFI FCR 2500 EPEF Control Excential Energy Plus 103.8% 103.8% 101.3% 96.1% 90% 92% 94% 96% 98% 100% 102% 104% 106% 108% 106.1% 10 Between 2014 and 2023 Belgium, China, Colombia, India, Mexico, South Africa, United Kingdom 6652 Ross 308, Cobb 430, Arbor Acres Male, 50:50 male and female 37.1 Corn-based (n=8), wheat-based (n=2) Animal fat, full fat soybean, palm oil, recycled oils from restaurants, rice bran oil, soybean oil, sunflower oil 3042.4 kcal/kg (2713 – 3164) metabolizable energy 7.01% (4.95 – 8.30) crude fat 21.59% (21.30 - 21.80) crude protein Number of selected studies Years of study completion Location of the study Total number of broilers Broiler breed Broiler sex Average days of life Main formulated cereals Main formulated fat sources Average dietary nutrients TABLE 1
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