Feed & Additive Magazine Issue 4 May 2021

SPECIAL STORY FEED & ADDITIVE MAGAZINE May 2021 45 As we can see, the results do not differ greatly be- tween diets 1 and 3, but we do find a difference in weight gain with diet 2, which we can consider as control diet. Once the suitability of SDP and SDE had been verified as effective substitutes for antibiotics, and as the last reference to highlight, we want to mention a study published by Song et al. 2012, where vari- ous diets were tested, in the absence and presence of ZnO and with equivalent diets at a nutritional level. The results showed that both the inclusion of SDP and SDE resulted in a similar aver- age daily gain in the diets that included ZnO and Carbadox and those that did not include them, in the so-called phase I (first week after weaning), as results in table 4. A NUTRITIOUS, SUSTAINABLE AND EFFECTIVE SOLUTION As a conclusion, we can say that both plasma and egg powder can be used as a sus- tainable alternative to ZnO with similar positive effects on growth performance and health. These positive effects can be explained by the high nutritional value of plasma and egg powder and thanks to the bioactive components they contain, mainly immu- noglobulins IgG (in plasma) and immunoglobulins IgY (in egg), which have a direct influence on pathogenic microorganisms, on the immune function and on the gut maturation and protection. In addition, the excellent nutritional composition of plasma and egg powder and their high digestibility make the use of their nutrients extremely valuable. As the undigested part is mini- mal, it prevents harmful bacterial proliferation in- side the gut. References available upon request carlos.ucero@veos.es Table 3. Adapted from 2006 Vilar da Silva et al. R1 = +ANTIM R2 = -ANTIM R3 = -ANTIM+SDE Body Weight g 63,54 63,06 62,52 Feed conversion kg/kg 2,308 2,381 2,362 Weight Gain g 29,10 21,91 27,53 Mortality % 0,83 0,83 0,83 R1: Diet one, with antimicrobials R2: Diet two, without antimicrobials. We can consider it as control diet R3: without antimicrobials and with SDE About Carlos Ucero, MVetMed Carlos graduated from the Complutense University of Madrid with a degree in Veterinary Medicine. Later he completed his edu- cation with postgraduate studies in Innovation Management and also in Business Management and Marketing. With more than 20 years experience in the animal health and welfare sector, he is now involved in business development and R&D management at the VEOS Group as Technical Sales Manager ACTIPRO, a brand dedicated to animal nutrition. Table 4. Adapted from Song et al. 2012 ADG (g) F:G Control (-AB,- ZnO,-SDP,-SDE) 50 0,35 -AB,-ZnO, +SDP, +SDE 120 0,55 +AB,+ZnO, +SDP,+SDE 124 0,67 ADG: Average daily gain F:G: feed/weight gain ratio -AB,-ZnO,-SDP,-SDE: diet formulated without antibiotics (Carbadox) & ZnO, without spray dried plasma and without spray dried egg) +AB,+ZnO,+SDP,+SDE: diet formulated with antibiotics (Carbadox) & ZnO, spray dried plasma and spray dried egg -AB,-ZnO,+SDP,+SDE: diet formulated without antibiotics (Carbadox) & ZnO and with spray dried plasma and spray dried egg