The use of animal byproducts in broiler feeds: use of animal co-products in broilers diets

Abstract

This study aimed at evaluating live performance and carcass yield of broilers fed vegetarian diets or containing different animal byproduct meals after 8 days of age. In the experiment, 1080 one-day-old male chicks were distributed in a completely randomized experimental design with 6 treatments with 6 replicates. Diets were based on corn and soybean meal, and included or not animal meals, maintaining constant levels of minerals (calcium, phosphorus, and sodium) and amino acids (methionine, cystine, lysine, and threonine), The following treatments were applied: T1. Control (corn and soybean diet); T2. Inclusion of 5% meat and bone meal (MBM); T3. Inclusion of 5% blood meal (BM); T4. Inclusion of 5% feather meal (FM); T5. Inclusion of 5% poultry offal meal (OM); T6. Combination of meat and bone meal, feather meal, offal meal, and blood meal. Broiler weight gain, feed intake, feed conversion, livability and carcass yield were evaluated. At 35 days of age, it was verified that the combination of the four animal meals compromised weight gain. Broiler performance at 42 days of age was influenced by treatments, and the worst weight gain and true feed conversion were observed in birds fed diets with the combination of the four animal meals. The inclusion of 5% BM negatively affected the weight gain. It is concluded that MBM, FM, and OM inclusion can be individually used with no negative influence on broiler performance or carcass yield. In addition, it reduces feed costs

Poultry offal meal in broiler chicken feed

“…Superiority in WG was attributed to the improved balance of amino acids offered with the inclusion of 73.7 g kg -1 of POM in the diet, with supplementation of synthetic methionine and lysine. Some authors found an equivalence between the protein, POM and soybean meal sources during this phase (Bellaver et al, 2001;Caires et al, 2010), which did not occur in the present study, in which the results obtained in the initial phase were maintained in the subsequent phases. Currently, data regarding the amino acid digestibility of ingredients are used to formulate feed for birds.…”

“…The lack of consensus has been attributed to variability in the composition of the flours and the different criteria used in the formulations. However, some researchers have announced positive results from the application of new concepts in the formulation of experimental diets, such as correction for metabolizable energy and digestible amino acids, the ratios of calcium and phosphorus of the diets, which have demonstrated improvements in the birds' performance (Bellaver et al, 2001;Caires et al, 2010). This study evaluated the effects on the performance and carcass characteristics of broiler chickens resulting from the inclusion of POM in their diet.…”

Efficacy of a Synthetic Antioxidant Treatment in Stabilizing Poultry Byproduct Meal and Subsequent Impact of the Treated Meal on Selected Growth Parameters of Broilers

“…It is used in poultry diets as an alternative protein source to replace soybean (Erturk & Celik, 2004) and fish meal (Raja et al, 2001). The inclusion of animal by products in poultry diet significantly affects the bird performance (Caires et al, 2010;Silva et al, 2014;Edney et al, 2014). It can be added in poultry feeds up to 6%, according to Sahraei et al (2012), and inclusion levels ranging from 7.5% (Hosseinzadeh et al, 2010) to 12% (Christmas et al, 1996) have been reported.…”

Feather and blood meal at different processing degrees in broiler pre-starter and starter diets

“…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). Approximately 17% of a bird consists of non-edible wastes that are mainly composed of feathers and offal (8.5 and 6.5%, respectively), with the remaining constituents representing a minimal portion (Olivo et al, 2006).…”