Abstract
ABSTRACT The objective of this study was to evaluate the inclusion of feather and blood meal (FBM) in broiler pre-starter and starter diets according to the processing method used. Performance, digestibility, and intestinal morphometry of broilers fed diets containing FBM were evaluated in two experiments, in the pre-starter (1-7 d) and starter (8-21 d) phases in a randomized block design with four treatments and five replicates of 12 birds, totaling 20 experimental units per trial. The criteria used for block [...]
Highlights
Animal-derived ingredients are important inputs in the nutritional, economic, and food-safety aspects of animal diets (Bellaver et al, 2005; Caires et al, 2010; Silva et al, 2014; Beski et al, 2015)
In the metabolism trial carried out from days 4 to 7 in Experiment I (Table 5), the dry matter (DM) excretion values decreased as the processing pressure applied to feather and blood meal (FBM) was increased
Nitrogen intake and excretion were not affected by the processing of FBM (P>0.05), whereas N balance varied with the degrees of pressure tested (Table 5)
Summary
Animal-derived ingredients are important inputs in the nutritional, economic, and food-safety aspects of animal diets (Bellaver et al, 2005; Caires et al, 2010; Silva et al, 2014; Beski et al, 2015). Despite the widespread use of animal products in the formulation of animal diets, their nutritional value should be better investigated. Restrictions on their inclusion, real chemical and energy composition, Feather and blood meal at different processing degrees in broiler pre-starter and starter diets 2 quality and industrial yield, and methods to prevent bacteria proliferation through them must be considered (McCasland and Richardon, 1966; Nunes et al, 2005; Beski et al, 2015). Blood can be included if it does not significantly alter the composition of hydrolyzed feather meal. Feathers are included in practical feeds as part of the protein and amino acid source (Branco et al, 2003; Saima et al, 2008; Baker, 2009)
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