Figure 1: The addition of a multi-carbohydrase and phytase to re-formulated diets returned body weight gain and FCR to the level of the positive control group
Source: Jlali M., Bello A., Cozannet, P., Alleno C., Ceccantini M. and Preynat A. (2018). Effects of a multi-carbohydrase and phytase complex (MCPC) on growth performance of broilers fed whaet-corn soybean meal-based diets reduced in metabolizable energy and nutrients. Proceedings of the 11th Asian Pacific Poultry Conference.
of age these performance criteria were restored to the level of the positive control by the addition of the feedase – irrespective of the diet re-formulation. The lower specification diets (NC1, NC2 & NC3) significantly
reduced carcass, breast, and leg weights of broilers at 42 days of age (P < 0.0001; Figure 2). The inclusion of the feedase returned the carcass traits to positive control levels in all cases. This trial demonstrated that adding this global enzyme solution to
broiler diets would allow significant reductions in the specification up to a 5% reduction in ME, 6% in dAA, 0.18% in avP and 0.16% in Ca. The study showed that the enzyme combination makes it possible to reduce feed costs; whilst maintaining broiler performance, carcass yields and tibia characteristics.
A valuable solution to reduce the environmental footprint In this trial, the feed treated with enzymes had 25 kg less of soy oil, 8 kg less of phosphates and 20 kg less of soybean meal per each tonne of
feed, replacing it with 53 kg of corn. This substitution represents savings of close to 1.7 ha of arable land/ each 1,000 t of feed produced, due to the differences in productivity of soy and corn. Moreover, with 1,000 t of feed there was 8 t less of phosphates consumed, which is a limited natural resource. A second impact can be considered on the manure. A
supplementation of multi-carbohydrase could decrease the excretion of ammonia by 13% (Geraert et al., JRA, 1997), and the feedase treatment compared to no enzymes in the feed, decreased the P excretion by 37% (Bello A. et al, APPC, 2018).
Conclusion Considering that phytates and non-starch polysaccharides are the most relevant anti-nutritional factors in feed, decreasing its digestibility, the use of a multi-carbohydrase and phytase complex can save costs, without hampering performance. But it is also an effective way to improve sustainability, by decreasing the extension on arable land to produce feed ingredients, decreasing the N and P in manure.
Figure 2: The addition of a multi-carbohydrase and phytase to re-formulated diets restored carcass, breast and leg yield to that of the control
1050 1250 1450 1650 1850 2050
250 450 650 850
Carcass PC
NC1 NC2 a b b b a a a
a
b
b
b
a
a
a
a
b
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Breast NC3 NC1 + MCPC NC2 + MCPC NC3 + MCPC Source: authors (2018), Title. Proceedings of the 11th Asian Pacific Poultry Conference. FEED COMPOUNDER NOVEMBER/DECEMBER 2020 PAGE 29
Leg
Carcass characteristics, g
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