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Substitution of corn meal with dry brewer´s yeast in the diet of sheep

2016; Universidad de Antioquia; Volume: 29; Issue: 2 Linguagem: Inglês

10.17533/udea.rccp.v29n2a03

2256-2958

Ronaldo Lopes Oliveira, Robson José Freitas Oliveira, Leílson Rocha Bezerra, Thiago Vinícius Costa Nascimento, Caius Barcellos de Pellegrini, Marcondes Dias de Freitas Neto, Nilton Guedes do Nascimento Júnior, Wender Ferreira de Souza,

Genetic and phenotypic traits in livestock

dry brewery residue can be an important tool for reducing the cost of concentrated feed for sheep. Objective: to evaluate the intake, digestibility and feeding behavior of sheep fed dry brewery residue. Methods: twenty lambs of undefined breed, with 30.33 ± 4.94 Kg body weight and seven months average age were used. Animals were fed diets containing 50% forage (Tifton-85 hay) and 50% concentrate. Treatments consisted of 0, 33, 66, and 100% corn meal substitution with dry brewery residue. Data were subjected to analysis of variance and regression analyses using a 5% significance level. Results: dry matter intake based on average body weight was 3.40% and showed no significant variation with the substitution level. Diet composition did not affect (p > 0.05) intake of crude protein, ether extract, ash, lignin and total digestible nutrients (71.26%). Substitution of corn meal with dry brewery residue did not affect nutrient digestibility (p > 0.05). Feeding behavior, time spent feeding and ruminating were not affected (p > 0.05) by the substitution; however, idling time was quadratically related to the percentage of dry brewery residue that was substituted for corn meal, with an inflection point at 41.58% replacement. Conclusion: dry brewery residue can replace up to 100% corn meal without negative effects on intake, digestibility or the feeding behavior of sheep.