Table 1 – Summary of the performance data in the TH Bingen trial. Parameter
Final weights (g) Daily gain (g) FCR (kg/kg) Mortality (%)
80 ppm Zn Sulphate 2449 69
1,32 2,5
80 ppm MiaTrace Zn 2534 72
1,32 3,75
Table 2 – Bone quality examination results. tibia...
weight [g] length [cm]
Phosphorus [g/kg OS] Calcium [g/kg OS] Zinc [mg/kg OS]
Mean Mean Mean Mean Mean
80 ppm Zn sulphate 17.87
10.27a 178.93 360.11 300
80 ppm zinc sulphate. No differences were observed in this respect compared to the group with the addition of 40 ppm zinc from zinc sulphate. Insoluble zinc is the fraction in the di- gesta that cannot be used by the body for metabolism and is excreted. Thus, when using the protected zinc source just as much soluble zinc can be provided as when administering 80 ppm zinc from zinc sulphate, even though the amount of zinc is reduced by 50%. The amount of the insoluble zinc frac- tion is significantly lower and thus less zinc is excreted un- used. Apparent ileal digestibility was better in the protected zinc group compared to the other two groups. Measured zinc levels in the blood plasma of the animals were also highest in the group fed protected zinc. As zinc can have an effect on gut health, differences in appar- ent ileal digestibility of crude protein between the three groups were used as an indicator of gut health. Again, the group fed 40 ppm zinc from a protected source showed the best protein digestibility. MiaTrace Zn improves performance. Feed intake was numerically higher than in the two control groups over the entire fattening period and thus at the same level. Daily gains were higher in the experimental group and the feed conversion rate improved. In terms of performance data, the animals in the group fed protected zinc were about 55 g heavier at the end of fattening compared to the two groups fed conventional zinc sulphate.
Stomach protected zinc The results from both trials show the superiority and positive effects of a stomach-protected zinc source (MiaTrace Zn; MIA- VIT GmbH) on the zinc status and animal performance of broilers compared to zinc sulphate. Reduced interactions with components of the feed slurry, as well as a targeted re- lease of zinc ions enable lower zinc levels to be used in the feed while at the same time ensuring that the animals’
Difference 85 3 0
1,25
P – Value 0,519 0,474 0,728
80 ppm MiaTrace Zn 21.19
10.99b 181.71 363.16 326
SEM
0.889 0.166 0.100 1.414 7.426
P – Value 0.075 0.023 0.175 0.303 0.082
Zinc is an essen- tial trace ele- ment in broiler production.
requirements are met. The fact that the zinc can pass through the gizzard intact means that the zinc is used more effectively and other nutrients are absorbed.
Figure 2 – Zinc fractions in digesta (mg/kg digesta) 122,9b
71,29a 54,15b 57,01b 31,88a 30,24a 14,25
40 ppm ZN-sulphate Zn total
Soluble Zn
Insoluble Zn 80 ppm sulphate
40 ppm MiaTrace Zn 76,82b 54,57b
▶ POULTRY WORLD | No. 7, 2022
15
PHOTO: MIAVIT
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