Resumo

SANZ, P. et al. Desarrollo del aparato digestivo en pollos Campero INTA alimentados con poroto mucuna (Stizolobium deeringianum). Rev. vet. [online]. 2016, vol.27, n.2, pp.107-112. ISSN 1669-6840.

Tropical legumes are used in alternative production systems to feed chickens. We evaluate here the effect of the incorporation of mucuna bean meal (Stizolobium deeringianum) in partial replacement of soybeans in the finisher diet on the development of the digestive tract in Campero INTA chickens. The control diet was developed based on corn, soybeans and a vitamin mineral premix; in the test diet bean mucuna partially replaced soybean meal. The comparative analysis was performed using a factorial ANOVA, with sex and type of food as main effects. No significant interactions between different levels of both factors for the dependent variables analyzed were found. Significant differences for the relative weight of the gastrointestinal tract with values of 6.62±0.62 and 7.33±0.59 for the control diets and mucuna respectively were found. The relative weight of the gizzard showed statistically significant differences with values of 2.56±0.45 and 3.06±0.46 for the control diets and mucuna respectively. Significant positive correlations were demonstrated between the relative weight of the gastrointestinal tract and proventriculus (r=0.82; 0.01) and small intestine (r=0.72; 0.04) in the control group. In the experimental group the proventriculus correlated positively and significantly with small intestine weight (r=0.93; 0.0007). In the group fed mucuna a positive and significant correlation between the relative weight of the gastrointestinal tract and gizzard (r=0.79; 0.02) was recorded. We conclude that the incorporation of mucuna beans in the finisher diet of Campero INTA chickens produces an increase in the relative weight of the gastrointestinal tract, difference that is mainly due to the greater weight of the gizzard. Given that the proximal composition allows mucuna bean consider its use as an alternative source of protein for chickens, it is necessary further studies on methods of removing anti-nutritional factors that enable practical use of such raw materials.

Palavras-chave : chicken; feeding; mucuna bean; weight of digestive tract.

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