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http://ri.uaemex.mx/handle20.500.11799/65476| Title: | In vitro gas and methane production of two mixed rations influenced by three different cultures of Saccharomyces cerevisiae | Keywords: | Degradability;methane;protein level;yeast;info:eu-repo/classification/cti/2 | Publisher: | Taylor and Francis | Project: | No.;45 No.;1 |
Description: | One of the most important problems facing ruminant production is the losing of energy and high biological value proteins as a result of ruminal fermentation. This may cause a limited productive performance (Kholif et al. 2014; Ahmed et al. 2016) and release of pollutants to the environment (Calsamiglia et al. 2007). Ionophores and antibiotics have good results to reduce these losses in energy and protein (McGuffey et al. 2001); however, the European Union banned the use of them due to the potential of appearance of residues in milk or meat (Russell and Houlihan 2003). Nowadays, researches are concerning the use of natural feed additives, generally recognized as safe for human consumption, including phytogenic extracts (Valdes et al. 2015), enzymes (Alsersy et al. 2015) or Saccharomyces cerevisiae (SC) (Elghandour, Salem et al. 2015) to modify rumen microbial fermentation. The current study aimed to evaluate if the effect of Saccharomyces cerevisiae (SC) on in vitro fermentation can be affected with the crude protein (CP) content of the ration. Three commercial SC cultures of Biocell F53®, Procreatin 7®, and Biosaf SC47® were evaluated at 0 (SC0), 2 (SC2), and 4 (SC4) mg/g dry matter (DM) of substrate. Two rations with 13% (low crude protein [LCP]) and 16% CP (high crude protein [HCP]) were used as substrates. Rumen gas (gas production [GP]) and methane (CH4) productions were recorded. The HCP ration had increased (P = .05) asymptotic GP, CH4 production, and fermentation parameters. Biocell F53® and Biosaf SC47® increased the asymptotic GP (P < .05) in HCP and LCP rations with better effect for the dose of 2 mg/g DM substrate HCP (P < .05) and dose of 4 mg yeast/g DM substrate with the LCP ration. The highest CH4 production was observed (P < .05) with Procreatin 7®. It could be concluded that HCP ration improved GP than LCP ration. Moreover, addition of Biocell F53® and Biosaf SC47® at rate of 2 mg/g DM improved fermentation kinetics and nutrients degradability |
URI: | http://ri.uaemex.mx/handle20.500.11799/65476 | Other Identifiers: | http://hdl.handle.net/20.500.11799/65476 | Rights: | info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0 |
| Appears in Collections: | Producción |
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