Inclusion of different levels of common-bean residue in sheep diets on nutrient intake and digestibility

Wanderson José Rodrigues de Castro, Anderson de Moura Zanine, Alexandre Lima de Souza, Daniele de Jesus Ferreira, Luiz Juliano Valerio Geron, André Gustavo Leão, Fagton de Mattos Negrão, Mariane Moreno Ferro

Abstract


The objective of this study was to evaluate the effect of including common-bean residue in diets for feedlot sheep on the intake and digestibility of nutrients by these animals. Sixteen intact male sheep were allotted in a completely randomized design with four treatments and four replicates. Treatments consisted of the inclusion of 0, 11, 22, and 33% of the common-bean residue (dry matter basis) in the experimental diets, which corresponded to the substitution levels of 0.0, 33.3, 66.7, and 100.0% of cottonseed cake for the bean residue. Data of the studied variables were subjected to analyses of variance and regression, adopting a significance level of 5%. The model was chosen based on the significance of the regression parameters, evaluated by the t test (P<0.05), and on the coefficients of determination. The levels of inclusion of the common-bean residue in the diet influenced (P<0.05) the intakes of dry matter (DM), crude protein, organic matter, ether extract, and indigestible neutral detergent fiber, expressed in g animal-1 day-1, percentage of body weight (%BW), and metabolic weight (BW0.75), which decreased linearly. However, the inclusion of the different levels of common-bean residue did not change (P>0.05) the intakes of neutral detergent fiber, non-fiber carbohydrates, or total digestible nutrients by the feedlot sheep. Every 1.0% of inclusion of the common-bean residue in the sheep diet led to a reduction of 4.93, 0.01, and 0.20 in DM intake when expressed in g animal-1 day-1, %BW, and BW0.75, respectively. Every 1.0% of inclusion of the bean residue resulted in the reduction of 2.73% in the intake of indigestible neutral detergent fiber by the feedlot sheep. Sheep displayed a linear increase (P<0.05) in water intake with the levels of common-bean residue in the experimental diets. The inclusion of 0, 11, 22, and 33% of the residue in the diet caused the digestibility of dry matter, crude protein, organic matter, and neutral detergent fiber to increase linearly (P<0.05). It is concluded that the inclusion of up to 22% of commonbean residue in diets for feedlot sheep provides balanced and adequate values between the intake and digestibility of nutrients.


Keywords


Alternative feed; Crude protein; Feedlot; Sheep.

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DOI: http://dx.doi.org/10.5433/1679-0359.2016v37n1p369

Semina: Ciênc. Agrár.
Londrina - PR
E-ISSN 1679-0359
DOI: 10.5433/1679-0359
E-mail: semina.agrarias@uel.br
Este obra está licenciado com uma Licença Creative Commons Atribuição-NãoComercial 4.0 Internacional