Effects of Feeding XXXX Naturally Contaminated with Fusarium Mycotoxins on Growth Performance, Nutrient Digestibility, and Blood Chemistry of Gilts and Growth Recoveries by Feeding a Non-contaminated Diet.

@entity1707 @entity2247 @entity4 @entity4336 @entity12070 @entity12071 @entity1460
UNASSIGNED: The objectives of this study were to investigate the effects of feeding @entity2247 naturally contaminated with Fusarium mycotoxins on growth performance, @entity4 , and digestibility of dry matter, organic matter, and crude protein of gilts and the recovery of gilts fed normal diets immediately after the exposure to contaminated diets by measuring growth performance and @entity4 . In Exp. 1, four diets were prepared to contain 0%, 15%, 30%, or 45% contaminated @entity2247 containing 25.7 mg/kg @entity12070 and 26.0  g/kg @entity12071 . Sixteen gilts with an initial body weight (BW) of 33.3 kg (standard deviation = 3.0) were individually housed in a metabolism crate and assigned to 4 diets with 4 replicates in a randomized complete block design based on BW. During the 14-d feeding trial, individual BW and feed consumption were measured weekly and the vertical and horizontal lengths of vulva were measured every 3 d. From d 10, feces were collected by the maker-to-marker method for 4 d. Blood samples were collected on d 14. During the overall period, the average daily gain, average daily feed intake, and gain:feed of @entity1707 linearly decreased (p<0.01) as the dietary concentration of contaminated @entity2247 increased. However, the digestibility of crude protein was linearly increased (p = 0.011) with the increasing amounts of contaminated @entity2247 . Increasing dietary Fusarium mycotoxin concentrations did not influence vulva size, blood characteristic as well as immunoglobulin level of @entity1707 . In the Exp. 2, a @entity4336 - @entity1460 meal-based diet was formulated as a recovery diet. @entity1707 were fed the recovery diet immediately after completion of the Exp. 1. During the 14-d of recovery period, the individual BW and feed consumption were measured weekly and the vertical and horizontal length of vulva were measured every 3 d from d 0. On d 7, the feed intake of @entity1707 previously fed contaminated diets already reached that of @entity1707 fed a diet with 0% contaminated @entity2247 and no significant difference in growth performance among treatments was observed during d 7 to 14 of the recovery period. In conclusion, increasing levels of mycotoxins in diets linearly decreased the growth performance of @entity1707 , and these damages can be recovered in 7 d after the diet was replaced with a normal diet. The vulva size, blood characteristic, immune responses were not affected by increasing level of contaminated @entity2247 in the diets fed to @entity1707 .
