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Cuban Journal of Agricultural Science

Print version ISSN 0864-0408On-line version ISSN 2079-3480

Abstract

PEDRAZA, R.M. et al. In vitro gas production of two new varieties of sugar cane (Saccharum spp. C97-366 and C99-374), selected for forage. Cuban J. Agric. Sci. [online]. 2016, vol.50, n.3, pp.479-483. ISSN 0864-0408.

This paper presents dynamics and parameters of in vitro gas production of integral forage of two new cultivars of sugarcane (Saccharum spp., C97-366 and C99-374.), selected for forage, and compared with a control (My5514 commercial variety). Integral forage samples were analyzed, according to a completely randomized design, at eleven months of regrowth with the use of the technique of in vitro gas production. New varieties showed higher gas production (P <0.05) than My5514 at 48, 72 and 96 h of incubation, without significant differences among them. Gas production parameters, lag phase and gas production potential (b) ranged from 2.48 to 3.27 h and 32.7 to 36.6 mL, respectively. Gas production speed (c) ranged from 0,023- 0,024 h-1. The two new cultivars had generally better in vitro digestibility than the control

Keywords : cultivar selection; sugarcane; digestibility.

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