The effects of different milking management on metabolism, cortisol levels, and milk yield of Holstein cows were investigated in this trial. Eighteen Holstein cows and calves were randomly assigned to one of the following three treatments: T1) cows were separated from their calves 6 h after parturition but reunited with them for two daily periods of 30 minutes each; T2) cows were separated from their calves 6 h after parturition; or T3) cows were maintained with their calves during the […]

Forty crossbreed sows (1/2Landrace, 1/4Large White, 1/4Pietran) with average weight of 188,2 ± 18,81 kg at fourth and/or fifth reproductive cycles, in a total of 75 childbirths, were used to evaluate different crude protein (CP) levels in the gestation diet. It was used a completely randomized design, with five treatments (rations with 10,0; 11,5; 13,0; 14,5 e 16,0% of CP), fifteen replicates and being each childbirth an experimental unit. Sow gain was not affected by the CP levels in gestation […]

Fifty crossbreed gilts (1/2 Landrace, 1/4 Large White e 1/4 Pietran) with average weight of 154.5 + 2.93 and 175.1 + 8.53 kg at second and third reproductive cycle respectively, were used to evaluate different crude protein (CP) levels in gestation diet. A randomized block design, with five treatments, ten replicates and one animal by experimental unit was used. The treatments corresponded to rations with 10.0, 11.5, 13.0, 14.5, and 16.0% of crude protein. Sow weight gain, piglet average weight […]

Fifty crossbreed gilts (Landrace, Large White and Pietrain) with 136.34±16.05 and 220 days of average weight and age, respectively, were used to evaluate diets with different crude protein levels, at the gestation period. A complete randomized blocks design, with five treatments, ten replicates and one animal per experimental unit, was used. The treatments corresponded to the diets with 10.0, 11.5, 13.0, 14.5 and 16.0% of crude protein. The weight gains of the gilts at the 90 days of the gestation […]