The aim of this study was to determine the productive performance of broilers fed cassava meal (Manihot esculenta) as partial replacement of maize in the finishing stage. A total of 96 broiler chickens of the 21-day-old Cobb line were used, distributed in 12 experimental pens corresponding to three treatments with four repetitions. The substitution levels of maize for cassava meal were 0, 10 and 20%, which represented the treatments T0 (control), T1 and T2, respectively. Each treatment had 32 chickens and each repetition eight chickens. The effect of cassava flour on feed consumption, weight gain, feed conversion, mortality and productive efficiency index was evaluated. No significant differences were found between treatments in the evaluated indicators, indicating that cassava meal can effectively replace up to 20% in broiler maize-based diets.

The aim of this study was to determine the productive performance of broilers fed cassava meal (Manihot esculenta) as partial replacement of maize in the finishing stage. A total of 96 broiler chickens of the 21-day-old Cobb line were used, distributed in 12 experimental pens corresponding to three treatments with four repetitions. The substitution levels of maize for cassava meal were 0, 10 and 20%, which represented the treatments T0 (control), T1 and T2, respectively. Each treatment had 32 chickens and each repetition eight chickens. The effect of cassava flour on feed consumption, weight gain, feed conversion, mortality and productive efficiency index was evaluated. No significant differences were found between treatments in the evaluated indicators, indicating that cassava meal can effectively replace up to 20% in broiler maize-based diets.

Four tropical grasses were evaluated: Maralfalfa (Pennisetum violaceum Lam), Purple King grass (P. purpureum x P. typhoides), Elephant grass (Pennisetum purpureum, Schumach) and Guatemala grass (Tripsacum laxum, Nash) with two harvest intervals (45 and 70 days), using a factorial experiment with a randomized complete block design. The interaction pastures × cutting frequencies was significant (p<0.05) for the agronomic and nutritional characteristics. Purple King Grass and Guatemala harvested at 70 days produced higher dry matter yield (17.13 and 17.03 t ha-1, respectively) than Maralfalfa, Purple King Grass, Elephant grass, and Guatemala grass harvested at 45 days. Compared with other grasses, the Guatemala grass harvested at 45 days had the highest leaf: stem ratio (4.64). The highest average contents of protein (78.5 g kg-1) and phosphorus (1.22 g kg-1) were obtained at 45 days. I...

Se evaluaron cuatro pastos tropicales, Maralfalfa (Pennisetum violaceum Lam), pasto Morado (P. purpureum x P. typhoides), Elefante (Pennisetum purpureum, Schumach) y Guatemala (Tripsacum laxum, Nash) con dos intervalos de corte (45 y 70 días), mediante un experimento factorial con diseño de bloques completos al azar. La interacción pastos × frecuencias de corte fue significativa (p<0.05) para las características agronómicas y nutricionales. Pasto Morado y Guatemala cosechados a los 70 días obtuvieron mayor rendimiento de materia seca (17.13 y 17.03 t ha-1, respectivamente) que Maralfalfa, Morado, Elefante y Guatemala cosechados a los 45 días. En comparación con otros pastos, el pasto Guatemala cosechado a los 45 días obtuvo la relación hoja: tallo más alta (4.64). Los mayores contenidos promedio de proteína (78.5 g kg-1) y fósforo (1.22 g kg-1) se obtuvieron a los 45 días....

Se evaluaron cuatro pastos tropicales, Maralfalfa (Pennisetum violaceum Lam), pasto Morado (P. purpureum x P. typhoides), Elefante (Pennisetum purpureum, Schumach) y Guatemala (Tripsacum laxum, Nash) con dos intervalos de corte (45 y 70 días), mediante un experimento factorial con diseño de bloques completos al azar. La interacción pastos × frecuencias de corte fue significativa (p<0.05) para las características agronómicas y nutricionales. Pasto Morado y Guatemala cosechados a los 70 días obtuvieron mayor rendimiento de materia seca (17.13 y 17.03 t ha-1, respectivamente) que Maralfalfa, Morado, Elefante y Guatemala cosechados a los 45 días. En comparación con otros pastos, el pasto Guatemala cosechado a los 45 días obtuvo la relación hoja: tallo más alta (4.64). Los mayores contenidos promedio de proteína (78.5 g kg-1) y fósforo (1.22 g kg-1) se obtuvieron a los 45 días....