Cactus pear silage to mitigate the effects of an intermittent water supply for feedlot lambs: intake, digestibility, water balance and growth performance.
2023
NOBRE, I. DE S. | ARAUJO, G. G. L. DE | SANTOS, E. M. | CARVALHO, G. G. P. DE | ALBUQUERQUE, I. R. R. DE | OLIVEIRA, J. S. DE | RIBEIRO, O. L. | TURCO, S. H. N. | GOIS, G. C. | SILVA, T. G. F. DA | PERAZZO, A. F. | ZANINE, A. DE M. | FERREIRA, D. DE J. | SANTOS, F. N. DE S. | CAMPOS, F. S. | ISMAEL DE SOUSA NOBRE, Department of Animal Science, Federal University of Paraíba, Areia, PB; GHERMAN GARCIA LEAL DE ARAUJO, CPATSA; EDSON MAURO SANTOS, Department of Animal Science, Federal University of Paraíba, Areia, PB; GLEIDSON GIORDANO PINTO DE CARVALHO, Department of Animal Science, Federal University of Bahia, Salvador, BA; ITALO RENEU ROSAS DE ALBUQUERQUE, Department of Animal Science, Federal University of Bahia, Salvador, BA; JULIANA SILVA DE OLIVEIRA, Department of Animal Science, Federal University of Paraíba, Areia, PB; OSSIVAL LOLATO RIBEIRO, Department of Animal Science, Federal University of the Reconcavo of Bahia, Cruz das Almas, BA; SILVIA HELENA NOGUEIRA TURCO, UNIVASF; GLAYCIANE COSTA GOIS, UNIVASF; THIERES GEORGE FREIRE DA SILVA, Academic Unit of Serra Talhada, Federal Rural University of Pernambuco, Serra Talhada, PE; ALEXANDRE FERNANDES PERAZZO, Department of Animal Science, Federal University of Piauí, Teresina, PI; ANDERSON DE MOURA ZANINE, Department of Animal Science, Federal University of Maranhão, Chapadinha, MA; DANIELE DE JESUS FERREIRA, Department of Animal Science, Federal University of Maranhão, Chapadinha, MA; FRANCISCO NAYSSON DE SOUSA SANTOS, Department of Animal Science, Federal University of Maranhão, Chapadinha, MA; FLEMING SENA CAMPOS, Department of Animal Science, Federal University of Maranhão, Chapadinha, MA.
The aim of this study was to evaluate the intake, digestibility, water balance and growth performance of lambs receiving diets containing cactus silage under an intermittent water supply. Thirty-six male, uncastrated Santa Inês lambs with an initial weight of 19.8 ± 2.1 kg and age of 6 months were distributed in a 3 × 3 factorial arrangement, with three proportions of cactus pear in the diets (0 (control diet containing Tifton hay), 21% and 42% of dry matter) and three periods of intermittent water supply (0, 24 and 48 h), with four repetitions. Lambs that received diets non-isonitrogenous with cactus silage showed higher intakes of dry matter (p < 0.001), total digestible nutrients (p < 0.001), water excretion via faeces (p < 0.001) and water balance (p < 0.001). Lambs that received diets with cactus silage showed higher digestibility of total carbohydrates, non-fibre carbohydrates (p = 0.005), water intake via food (p < 0.001), total water intake (p < 0.001), water excretion via urine (p < 0.001) and water balance (p < 0.05), when compared to the control diet. Lambs that received diets with cactus silage promoted growth performance (p = 0.001). When using 42% forage cactus silage in place of Tifton hay and water offered at 48 h intervals, intake, digestibility, and performance of feedlot lambs were improved.
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