Figure 1: Hatchability of breeders over the trial period
Figure 3: Improved hatchability by using Methionine-Hydroxy- Analog-Chelates
Hatchability (%)
the laying performance and egg shell quality. The drop in hatchability quickly recovered and reached normal levels after 1 week. Even with such a short-term drop in productivity, the overall hatchability reached excellent levels. The quick recovery after an infection indicates an efficient
immune system, healthy animals and good management. It is well known that Mintrex fed birds have a more stronger immune system as shown by higher anti-body titres after immune challenges like vaccination. The enhanced immune response could explain why Mintrex fed birds reacted efficiently after the infection. A benchmark evaluation was used in the trial to better evaluate
the performance results: Age of the hens (weeks) + laying rate (%) * 100 Values higher than 120 indicate a very highly performing
flock. When the plateau was reached at week 29, Mintrex-fed birds continuously exceeded the reference value of 120 indicating high performing animals. Consistently exceeding the reference value of 120 is remarkable and supports the importance of supplementing diets with highly bioavailable chelated trace minerals.
Figure 2: Production number (benchmark 120)
using Mintrex in the diet, breeders are reacting with higher hatchability rates outperforming historical data (average) as well as the previous year (control group). Average hatchability (%) increased from 83.73% (Control) and
83.84% (Average) to 85.17% (Mintrex). The relative 1.71% higher hatchability is in line with other breeder studies increasing hatchability in the range of 1.9% - 4% in broiler or layer breeders. Consistently exceeding the hatchability compared to the previous year and the company average by supplementing diets with highly bioavailable chelated trace minerals supports the importance of delivering trace minerals to the tissue and metabolism of poultry. Finally yet importantly, the drop in hatchability caused by an
infection, reduced the average production parameters. Without the drop in week 37/38 (Figure 1) the overall hatchability would have been 85.67% compared to 85.17% (extrapolated by disregarding week 37/38). This means that hatchability increased by 2.3% which is perfectly in line with the experiences of previous breeder studies. It is well know that adding lower concentration of the HMTBa-
chelated trace minerals compared to the supplementation of ITM in diets for hens, results in stronger eggshell structure as seen by improved eggshell strength or thickness. This is directly visible by a reduced number in cracked or fissured eggs. Comparing the number of cracked eggs in the control diet vs. the Mintrex group (Figure 4),
Figure 4: Improved eggshell quality by using Mintrex
Hatchability results as one of the most important economic
parameters is illustrated in Figure 3 comparing results in the control group (year 2015) with the present study (year 2016). In addition, an average group is included in the evaluation. This specific group is used as a benchmark and based on the average farm results over the last years. The previous year (control group) is performing at identical levels to the average or historical data. This demonstrates that the previous flock fits very well in the overall hatchability results of the farm and can therefore be used as a real control group. By
PAGE 40 SEPTEMBER/OCTOBER 2017 FEED COMPOUNDER -2%
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