ARTICLE 84 FEED & ADDITIVE MAGAZINE November 2025 barns were included, both following a sequential off-on design. During the control phase (barn 1: 32–39 weeks; barn 2: 34–42 weeks), hens received a standard diet. In the subsequent treatment phase (barn 1: 39–45 weeks; barn 2: 42–47 weeks), the same diet was supplemented with Anta®Catch at 1 kg per tonne of feed. Environmental and management factors remained comparable. The results were impressive (Figure 1). Mortality dropped by up to 37 %, and the occurrence of small eggs fell dramatically — by 81 % in barn 1 and 57 % in barn 2. Eggshell quality improved significantly: Soft-shelled eggs decreased by 23 % and 34 %, while broken eggs were reduced by up to 11 % (Figure 2). For farmers, these figures translate directly into better results: Fewer downgraded eggs, fewer hanBarn 1 4.10% 1.56% -23% 1.66% -34% 1.09% 1.20% 4.5% 4.0% 3.5% 3.0% 2.5% 2.0% 1.8% 1.6% 1.4% 1.2% 1.0% 0.8% 0.6% 0.4% 0.2% 0.0% Broken Egg Rate (%) Soft Shell Egg Rate (%) -0.7% b a 4.07% 3.67% -11% 3.24% Control Anta®Catch Barn 1 Barn 1 Barn 1 Figure 2. Soft-shelled (a) and broken eggs (b) before vs. after Anta®Catch supplementation Barn 1 0.59% b a -81% -57% 0.13% 0.30% 0.11% Small Egg Rate (%) 0.7% 0.6% 0.5% 0.4% 0.3% 0.2% 0.1% 0.0% 3.5% 3.0% 2.5% 2.0% 1.5% 1.0% 0.5% 0.0% Mortality (%) 3.05% -20% 2.45% 2.47% -37% 1.55% Barn 2 Barn 1 Barn 2 Control Anta®Catch Figure 1. Mortality (a) and small egg rate (b) before vs. after Anta®Catch supplementation
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