The objective ofthis work was to evaluate the influence of in ovo inoculation of nutritioussolutions on the hatchability and the performance of broilers at 21 days ofage. It was incubated 2,400 eggs from Cobb broiler breeders at 40 weeks of ageon four different dates. On the 17.5 day of incubation, the eggs were inoculatedwith 0.5 mL with one of the following saline solutions: 0.5%; solutioin of 2.0%glucose + 2.0% sucrose solution; 2.5% glucose + 3.0% sucrose solution, vitaminsolution or chelate minerals solution. All solutions were evaluated by comparingthem to a control treatment, composed of not inoculated eggs. To determine hatchability,chicks were selected according to sex and distributed in a random block design,in a 2 × 6 factorial arrangement (2 sexes × 6 solutions), with 8 replicatesof 12 to 16 birds per experimental unit. At 7 and 21 days of age, it was determinedweight gain, feed intake and feed conversion. Yields of chest, chest filet andleg were estimated at the end of the period. The inoculation of in ovosolutions reduced the egg hatchability, increasing the number of pecked andnot hatched eggs. Weight gain and feed conversion of the birds at 7 days ofage were not affected by in ovo inoculation. At 21 days of age, solutionsof 2.0% of glucose + 2.0% of sucrose, of vitamins and minerals did not affectperformance. However, inoculation of 2.5% of glucose + 3.0% of sucrose providedbetter feed conversion and increase of 4.07% in weight gain, 5.07% in the weightof chest with bones and 5.47% in the chest filet weight. Inoculation of nutritioussolution containing 2.5% of glucose + 3.0% of sucrose provides greater weightgain, better feed conversion, greater yields of chest with bones and of chestfilet of birds at 21 days of age.
