![]() In addition, FLAs improve the antioxidant status in blood serum and the quality of meat and milk.Īs part of the strategies to satisfy the growing demand for meat and dairy products, it is necessary to increase effectiveness and productivity in bovine production systems ( 1). In conclusion, dietary supplementation with FLAs improves animal performance and nutrient digestibility in cattle. Supplementation with FLAs decreased milk somatic cell count (WMD = −0.251 ×103 cells/mL p < 0.001) and increased ( p < 0.01) milk production (WMD = 1.348 kg/d), milk protein content (WMD = 0.080/100 g) and milk fat content (WMD = 0.142/100 g). In meat, the dietary inclusion of FLAs decreased ( p < 0.05) shear force (WMD = −1.018 kgf/cm 2), malondialdehyde content (WMD = −0.080 mg/kg of meat), and yellowness (WMD = −0.460). A higher ruminal propionate concentration (WMD = 0.926 mol/100 mol p = 008) was observed in response to FLAs supplementation. In blood serum, FLAs supplementation decreased the serum concentration of malondialdehyde (WMD = −0.779 nmol/mL p < 0.001) and increased ( p < 0.01) the serum concentration of superoxide dismutase (WMD = 8.516 U/mL), glutathione peroxidase (WMD = 12.400 U/mL) and total antioxidant capacity (WMD = 0.771 U/mL). Dietary supplementation with FLAs decreased feed conversion ratio (WMD = −0.340 kg/kg p = 0.050) and increased ( p < 0.05) dry matter intake (WMD = 0.191 kg/d), dry matter digestibility (WMD = 15.283 g/kg of DM), and daily weight gain (WMD = 0.061 kg/d). The weighted mean differences (WMD) between the FLAs treatments and the control treatment were used to assess the effect size. ![]() Thirty-six peer-reviewed publications were included in the data set. The objective of this study was to evaluate the effects of dietary supplementation with flavonoids (FLAs) on animal performance, diet digestibility, antioxidant status in blood serum, rumen parameters, meat quality, and milk composition in beef and dairy cattle through a meta-analysis. 3Departamento de Producción Agrícola y Animal, Universidad Autónoma Metropolitana-Xochimilco, Mexico City, Mexico.2División Académica de Ciencias Agropecuarias, Universidad Juárez Autónoma de Tabasco, Villahermosa, Mexico.1Departamento de Zootecnia, Universidad Autónoma Chapingo, Texcoco, Mexico.José Felipe Orzuna-Orzuna 1 Griselda Dorantes-Iturbide 1 Alejandro Lara-Bueno 1 * Alfonso Juventino Chay-Canul 2 Luis Alberto Miranda-Romero 1 Germán David Mendoza-Martínez 3
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