Safety of Feeding Aflatoxin-Inactivated Corn to White Leghorn Layer-Breeders
1979; Elsevier BV; Volume: 58; Issue: 5 Linguagem: Inglês
10.3382/ps.0581202
ISSN1525-3171
AutoresB.L. HUGHES, B.D. Barnett, J. E. Jones, J.W. DICK, William P. Norred,
Tópico(s)Insect and Pesticide Research
ResumoA two-year study was conducted to investigate the safety of feeding corn ammoniated to inactivate aflatoxins to White Leghorn layer-breeders. Four types of corn were used: 1) normal corn (control); 2) ammoniated control corn; 3) aflatoxin contaminated corn (754 ppb); and 4) ammoniated aflatoxin corn (resulting in an aflatoxin level of 3.5 ppb). Corn made up 66.3% of the total diet, resulting in an aflatoxin level in the feed of 500 ppb and 2.3 ppb for treatments 3 and 4, respectively. The study consisted of two trials each with a duration of ten 28-day periods. White Leghorn pullets used in the study were 26 weeks of age at the start of the first trial and 22 weeks of age at the start of the second trial. The birds receiving the ammoniated corn showed no deleterious effects on production, egg quality, reproduction, feed consumed per dozen eggs, or mortality rates. There was a trend for these birds, especially the aflatoxin-ammoniated group, to consume less feed and gain less body weight during the trial. However, as noted above, this did not cause any problems with other parameters. Therefore, these data indicate that corn treated by the ammoniation process used in this study would be safe in White Leghorn layer-breeder diets at levels up to 66.3% of the total diet. The presence of aflatoxin in the feed (500 ppb) did not cause any serious problems. Differences were observed for each of the following parameters but the differences were usually small and statistically significant in only one trial of the study: reduced egg weight (second trial), reduced total mass of eggs produced (second trial), increased percentage of blood spots (second trial), reduced feed consumption per bird per day (second trial), and reduced day-old chick weight (first trial).
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