Resumo

JUAREZ MORALES, Pedro et al. Effect of a multienzyme complex and a probiotic in laying hens fed sorghum-soybean-canola diets. Rev. mex. de cienc. pecuarias [online]. 2020, vol.11, n.2, pp.369-379.  Epub 23-Out-2020. ISSN 2448-6698.  https://doi.org/10.22319/rmcp.v11i2.4843.

This study aimed to evaluate the productive parameters and the concentrations of serum intestinal secretory IgA, cholesterol, LDL, and HDL of laying hens fed sorghum + soybean + canola diets with lower content of nutrients and added with a multienzyme complex (proteases, amylases, and xylanases) and a probiotic (Bacillus subtilis). A total of 180 Bovans White laying hens, between 42 and 54 wk of age, were randomly assigned to three treatments: 1) control diet; 2) low metabolizable energy diet (50 kcal/kg and 2 % of protein and methionine and lysine amino acids) + enzymes; 3) diet number two + probiotic. Productive performance results showed a significant difference (P<0.05) in egg weight between both treatments; treatment 3, added with the enzymes and probiotic, increased egg weight, compared to treatment 2. Humoral immunity, cholesterol, LDL, and HDL variables showed no statistical differences (P> 0.05) between treatments. This study demonstrates that low-nutrient (ME, protein, and lysine and methionine amino acids) diets added with a multienzyme complex and probiotic allow similar results in productive parameters compared to the control diet, and without changing intestinal immunity and levels of cholesterol, high- and low-density lipoproteins in Bovans White hens.

Palavras-chave : Enzymes; Bacillus subtilis; Laying hen; Immunity; Cholesterol.

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