African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6578

Full Length Research Paper

Effects of inoculating citrus (Citrus sinensis) tree leaves with either bacterial or whey on the fermentation and aerobic stability of silage

B. D. Nkosi
  • B. D. Nkosi
  • 1Division of Animal Nutrition, Animal Production Institute, P/Bag x2, Irene, 0062, South Africa.
  • Google Scholar
I. B. Groenewald
  • I. B. Groenewald
  • 2Centre for Sustainable Agriculture and Rural Development, University of the Free State, Bloemfontein, South Africa.
  • Google Scholar
R. Meeske
  • R. Meeske
  • 3Western Cape Department of Agriculture, P.O. Box 249, George, 6530, South Africa.
  • Google Scholar
M. D. Motiang
  • M. D. Motiang
  • 1Division of Animal Nutrition, Animal Production Institute, P/Bag x2, Irene, 0062, South Africa.
  • Google Scholar
T. Langa
  • T. Langa
  • 1Division of Animal Nutrition, Animal Production Institute, P/Bag x2, Irene, 0062, South Africa.
  • Google Scholar


  •  Accepted: 11 March 2013
  •  Published: 31 March 2013

Abstract

 

Shredded citrus (Citrus sinensis) leaves were treated with: Control (no additive), liquid whey and Lactobacillus buchneri (LB) and ensiled in 1.5 L anaerobic jars (15 jars/treatment). Jars were opened on day 2, 5, 10, 20 and 40 post ensiling for analysis of nutritive value and silage fermentation characteristics. In addition, samples of day 40 were subjected to a 5 day aerobic test where CO2 production was measured. After 40 days of ensiling, inoculation reduced (P<0.05) silage pH, butyric acid and ammonia-N while increasing acetic and lactic acids content compared to control. The aerobic stability of silage was improved (P<0.05) with whey and LB as indicated by lower CO2 production compared to control. It was concluded that silage produced from citrus leaves was poorly fermented as indicated by high pH and low lactic acid contents.

 

Key words: Carbon dioxide, feeds, fermentation, inoculant, leaves, silage.