Chemical composition of agro-industrial byproducts from corn (Zea mays) used in ruminant feed
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The study aimed to determine the chemical composition of agro-industrial maize (Zea mays) residues to evaluate their potential for ruminant feeding. A completely randomized design was used with four treatments: corn cob husk, corn silk, corn cob (tusa), and corn stover (panca), each with five replicates. Samples were analyzed using conventional bromatological methods to determine dry matter, crude protein, ether extract, ash, neutral detergent fiber (NDF), and acid detergent fiber (ADF). The results showed significant differences (p < 0.05) among treatments, reflecting the nutritional variability of the evaluated by-products. The corn cob (tusa) presented the highest dry matter content (98.72%) and also high ether extract values (3.29%). The husk showed the highest crude protein content (6.45%), followed by corn silk (5.56%). Corn stover (panca) registered the highest ash content (6.33%) and the lowest NDF value (69.15%), suggesting better intake potential. In contrast, the husk and corn cob showed the highest NDF contents. Corn silk presented the lowest ADF content (21.41%), indicating lower lignification. It is concluded that these residues have variable compositions that influence their nutritional value; therefore, their inclusion in ruminant diets should be carried out strategically and in a balanced manner.
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