Effects of a carbohydrase complex added in different inclusion rates in feeds for broilers on growth performance, digesta viscosity and foot pad health

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Nowadays, it is common to use non‐starch polysaccharide (NSP)‐degrading enzymes in poultry diets especially because of described beneficial effects on nutrient use efficiency and subsequently improved performance parameters (Hesselman and Åman, 1986; Dusel et al., 1998; Choct et al., 1999; Bedford, 2000; González‐Ortiz et al., 2015). Furthermore, the literature reports an improvement of excreta and litter quality of poultry when carbohydrase complex (CC) are added in the feed (Hesselman et al., 1981; Pettersson and Åman, 1988; Shirzadi et al., 2009).
Foot pad dermatitis (FPD) is especially caused by wet litter (Kamphues et al., 2011) and represents a widespread problem in poultry production, as it concerns economic aspects, but also animal health and welfare (Kamphues et al., 2011). Diverse, including dietary, approaches are needed to solve the problem of FPD.
Therefore, this study focussed the question whether a dietary CC might alter the dry matter content of excreta and of litter and thereby could also influence the prevalence and grade of FPD in broilers.

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