Spray dried-plasma in diets without antibiotics for weaned pigs to the 21 days of age

Abstract

Aiming to determine spray-dried plasma sequence of levels to be used in diets without antibiotics for pigs weaned to the 21 days of age, it were used 108 piglets with initial weight of 6.06 ± 0.35kg allocated in a experiment in blocks randomized with four treatments, nine replicates and three animals by experimental unit. The treatments consisted in inclusion of 0.0; 2.5; 5.0 and 7.5 % of plasma sequence in the Period I (of the 22 to the 28 days of age) and 0.0; 1.25; 2.5; 3.25 % of SP in the Period II (of the 29 to the 35 days of age). There was no difference concerning on the diaorrhea occurrence and frequency. There was no significant difference between treatment sequence without plasma sequence and treatment sequence with 2.5 and 1.25 % of plasma sequence for all parameters in all periods.The animals feeding 0.0 % plasma sequence levels in diets had less feed intake, weight gain and bionutritionals indexes than that others feeding 5.0 or 7.5% spray-dried plasma levels in diets in the period I. Considering the periods I and II together, it was verified that animals receiving 5.0 % or 7.5 % PS levels in diets in the period I and 2.5 % or 3.25 % plasma sequence levels in the period II had more weight gain and bionutritionals indexes than that others receiving 0.0 % plasma sequence sequence levels in the two periods. It was concluded that the spay-dried sequence of levels to be used in diets without antibiotics for piglets weaning at 21 days old are 5.0 % in the period I and 2.5 % in the period II.