Broilers fed diets supplemented with 2000 FTU/kg of the novel phytase showed higher final body weights and improved FCR.
and enzymatic activity over a range of pH values was evaluat- ed. The broader the functional pH range the better, as this en- sures superior bio-efficacy in the different pH environments throughout the broiler’s gut, including the very acidic early sections (gizzard and proventriculus). The recently-developed phytase showed an improved pH profile when compared to competitors, performing better than all other phytases, even at very low pH levels (>2) (see Figure 1). Its thermostability and phosphorus releasing ability were also enhanced when compared to other phytases currently available on the mar- ket, thus anticipating the outcomes obtained in the in vivo tests. The novel phytase and a competitor phytase were test- ed in vivo in broilers fed a corn- soybean meal-based diet. Broilers fed diets supplemented with 2000 FTU/kg of the nov- el phytase showed higher final body weights and an im- proved bodyweight-corrected feed conversion ratio (FCRc) when compared to a direct competitor (Figure 2). Phosphorus digestibility, an indicator of how successfully an enzyme can make phosphorus available, was also highest for the novel enzyme. The phytase was tested at different doses – 250, 500 and 1,000 FTU/kg – and presented the best results for each and all of the supplementation concentrations, espe- cially in the starter/grower phase of broiler’s development (Figure 3).
Improved performance Axtra PHY GOLD’s superior bio-efficacy when compared to competitor phytases has earned it top ranking among in-feed phytases. The novel enzyme displays a superior functional pH range, exhibits better thermostability, with improved growth performance in broilers and reduced phosphorus excretion. These benefits all work together to unlock extra potential in broiler production which is more efficient and sustainable.
phytases at 2000 FTU/kg.
FCRc (0-42 days) 1.80a
1.71ab 1.67b 1.65b
Positive Control
Negative Control
Axtra PHY GOLD 2000 FTU/kg
Competitor 2000 FTU/kg
Ileal digestable phosphorus (g/kg diet) – Day 21
Phytase dose (FTU/kg) ▶ POULTRY WORLD | No. 5, 2020 17
PHOTO: DUPONT
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36
