Evaluation of the productive response of male cattle to the substitution of corn grain by different levels of fresh sweet potato tuber (Ipomoea batatas L.) in a fattening diet

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Published: Oct 1, 2021

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M. H. Ruiloba
Grupo de Ciencia y Tecnología para el Desarrollo (GRUCITED), República de Panamá
J. Maure
Instituto de Investigación Agropecuaria de Panamá (IDIAP), República de Panamá
C. Solis
Universidad de Panamá, Facultad de Ciencias Agropecuarias, República de Panamá

Abstract

The productive response to the substitution of milled corn grain by fresh sweet potato tuber (I. batatas) in a ration destined to fattening steers was evaluated. A completely random design with a 3 x 2 factorial arrangement was used. The study lasted 78 days and three substitution levels were evaluated on a dry basis: 0, 50 and 100 % (TL0, TL50 and TL100, respectively), and two evaluation periods. The diets were isoenergetic and isoprotein. A total of four crossbreed males, with an average initial weight of 358 + 23 kg were used per treatment. The live weight gain was 1.620, 1.670 and 1.756 kg animal day-1 for TL0, TL50 and TL100. The intake of dry matter, fresh tuber and crude protein was 2.66, 2.67 and 2.76 kg; 0.00, 0.76 and 1.56 kg DM; 0.303, 0.296 and 0.305 kg; while the metabolizable energy intake resulted 29.50, 29.16 and 29.00 MJ 100 kg of live weight day-1 and the food conversion, 6.88, 6.68 and 6.62 kg of dry matter intake per kg of live weight gain-1 for TL0, TL50 and TL100. The cost of the fresh sweet potato tuber and the substitution of the milled corn grain was $ 0.18 and 0.40 kg dry-1 (US dollars). With respect to TL0, the feeding cost was reduced by 18.0 and 28.3 % with TL50 and TL100. It is concluded that the fresh sweet potato tuber proved to be a competitive and economically viable nutritional alternative, as an energy source for the replacement of 100 % of the corn grain in diets for fattening male cattle.
Key words: Tainung 66, sweet potato tuber, weight gain, intake, food conversion, feeding cost

Article Details

How to Cite
Ruiloba, M. H., Maure, J., & Solis, C. (2021). Evaluation of the productive response of male cattle to the substitution of corn grain by different levels of fresh sweet potato tuber (Ipomoea batatas L.) in a fattening diet. Cuban Journal of Agricultural Science, 55(4). Retrieved from https://cjascience.com/index.php/CJAS/article/view/1033
Issue
Vol. 55 No. 4 (2021): Cuban Journal of Agricultural Science
Section
Animal Science

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