The objective was evaluate the effects of the split suckling at the six first hours after the birth, on the weight at weaning and at 60 days of age and on the serum IgG rate, in piglets from sows of different parturition order. Thirty-three sows were used in a completely randomized design and 2 × 3 factorial arrangement: two post-birth management practices and three groups by parturition order. In the traditional management, piglets fought for the teats and suckled randomly, […]

The effect of yolks from birds hipperimmunized birds against Escherichia coli (E. coli) pathogenic for swine on the passive immunity of newborn piglets in a producer unit of piglets was studied. It was evaluated ELISA optical density (OD) of antibodies against E. coli, body weight and the frequency of diarrhea (FcD) in 137 newborn piglets born from 25 primiparous gilts non-vaccinated against E. coli. The gilts were considered blocks. From each gilt, six piglets from both sexes were separated, excluded […]

The efficiency of absorption of colostral immunoglobulins was evaluated in five Canchim and seven Nelore calves. They received colostrum pools with concentration of 70.20 ± 6.14 mg/mL through esofageal feeder at 2, 12, 24 and 36 hours after birth. The immunoglobulins concentrations of the pools were estimated through specific gravity and measured by radial immunodifusion. In the blood collection at birth and during the first 70 days of life, the total protein was assayed by biuret method and the immunoglobulins […]