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  • Title: Different roughage:concentrate ratios with and without liquid residue of cassava for lambs.
    Author: de Arruda Leite PMB, Véras RML, Véras ASC, Guim A, de Souza EJO, de Souza Silva KK, Barreto LMG, de Lima Silva J, Cardoso DB.
    Journal: Trop Anim Health Prod; 2018 Dec; 50(8):1807-1814. PubMed ID: 29804283.
    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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