Digestibilidade dos aminoácidos do milho, farelo de soja e gérmen integral de milho em galos e frangos de corte cecectomizados
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Data
2011
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Resumo
This experiment was carried out to evaluate the digestibility of the amino acids from corn, soybean meal
and corn germ meal in cecectomized roosters and broilers. The experiment used sixteen Lohmann-LSL roosters with 45 weeks
of age, 20 AgRoss 508 male broilers with 21 days of age and 20 other male broilers of same line, with 42 days of age, all of
them cecectomized. A completely randomized arrangement with three animal categories (roosters; chickens at 21 and 42 days
of age) was adopted for each feedstuff analyzed. Each bird represented an experimental unit. The trial had a duration of 84
hours; in the first 36 hours roosters and chickens were submitted to fasting for intestinal cleaning. After this, birds were forced
to ingest 30 grams of each ingredient with an esophageal probe, introduced directly into the crop. During the subsequent 48
hours, the excreta produced was collected twice a day. The values for true digestible amino acids were reduced for corn and
full-fat corn germ meal when determined with broilers submitted to the experimental procedures at 21 days of age compared
to the control group (adult cockerels). But, the same results were not been observed for soybean meal. In general, the true
digestible amino acid values were higher when determined with broilers at 42 days of age compared to adult cockerels. The
total amount of true digestible amino acids determined were 7.24; 6.25 and 7.33% for corn, 9.66; 9.14 and 9.91% for corn
germ meal and 41.82; 41.78 and 42.02% for soybean meal, values determined with roosters, and broilers at 21 and 42 days
of age, respectively. It was observed that as the gastrointestinal tract is mature, the amino acid digestibility of birds that
consumed corn and corn germ meal is enhanced.
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Digestibilidade, Fase inicial, Maturação fisiológica, Nutrição, Trato gastrintestinal, Digestibility, Gastrointestinal tract, Nutrition, Physiologic maturation, Starter phase
Citação
BRITO, Alexandre Barbosa de; STRINGHINI, José Henrique; XAVIER, Suzany Aparecida Gomes; GONZALES, Elisabeth; LEANDRO, Nadja Susana Mogyca; CAFÉ, Marcos Barcellos. Digestibilidade dos aminoácidos do milho, farelo de soja e gérmen integral de milho em galos e frangos de corte cecectomizados. Revista Brasileira de Zootecnia, Viçosa, v. 40, n. 10, p. 2147-2151, 2011.