Different roughage:concentrate ratios with and without liquid residue of cassava for lambs |
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| Authors: | Paulo Márcio Barbosa de Arruda Leite Robson Magno Liberal Véras Antonia Sherlânea Chaves Véras Adriana Guim Evaristo Jorge Oliveira de Souza Karla Katiene de Souza Silva Lígia Maria Gomes Barreto Janaina de Lima Silva Daniel Barros Cardoso |
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| Institution: | 1.Department of Animal Science,Federal Rural University of Pernambuco,Recife,Brazil;2.Academic Unit of Garanhuns,Federal Rural University of Pernambuco,Garanhuns,Brazil;3.Academic Unit of Serra Talhada,Federal Rural University of Pernambuco,Serra Talhada,Brazil;4.Department of Animal Science,Federal University of Sergipe,Nossa Senhora da Glória,Brazil;5.Multidisciplinary Center of Barra,Federal University of Western Bahia,Barra,Brazil |
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| Abstract: | This aim of this study was to evaluate the intake and apparent digestibility of nutrients, ingestive behavior, blood parameters, and performance of lambs fed two roughage:concentrate (R:C) ratios, with or without liquid residue of cassava (LRC). Forty lambs (19.5?±?1.45 kg body weight) were distributed in a completely randomized 2?×?2 factorial design. The intake of dry matter (1311 g/day) and total digestible nutrients (755 g/day), and the intake (172 g/day) and digestibility (552 g/kg) of crude protein were higher for lambs fed R:C of 40:60. The R:C ratio of 80:20 promoted a higher intake (585 g/day) and digestibility (461 g/kg) of neutral detergent fiber. There was an intake of LRC of 1.37 L/day for lambs fed R:C of 80:20 and 0.42 L/day for lambs fed R:C of 40:60. The lambs fed R:C of 80:20 spent more time in feeding (326 m/day) and rumination (530 m/day). The metabolic profile and performance of lambs were not affected by LRC inclusion. The body weight gain (220 g/day) was higher in lambs fed R:C of 40:60. A roughage:concentrate ratio of 40:60 is recommended for lambs because it resulted in the best performance, regardless of supplementation with liquid residue of cassava. |
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