| Home | Subscription | E-Submission | Sitemap | Contact Us |
Asian-Australas J Anim Sci > Volume 30(6); 2017 > Article
Asian-Australasian Journal of Animal Sciences 2017;30(6): 804-810. doi: https://doi.org/10.5713/ajas.16.0773
Effects of sodium diacetate on the fermentation profile, chemical composition and aerobic stability of alfalfa silage
XianJun Yuan1, AiYou Wen1,2, Seare T. Desta1, Jian Wang1, Tao Shao1,*
1Institute of Ensiling and Processing of Grass, Nanjing Agricultural University, Nanjing 210095, China
2College of Animal Science, Anhui Science and Technology University, Fengyang 233100, China
* Corresponding Author: Tao Shao ,Tel: +86-025-84396130, Fax: +86-025-84396130, Email: shaotaola@163.com
Received: October 9, 2016;  Revised: November 16, 2016.  Accepted: December 17, 2016.  Published online December 26, 2016.

The objective of this study was to evaluate the effect of sodium diacetate (SDA) on fermentation profile, chemical composition and aerobic stability of alfalfa (Medicago sativa L.) silage.
Fresh alfalfa was ensiled with various concentrations of SDA (0, 3, 5, 7, and 9 g/kg of fresh forage). After 60 days of the ensiling, the samples were collected to examine the fermentative quality, chemical composition and aerobic stability.
The application of SDA significantly (p<0.05) decreased silage pH with the lowest value in silage with 7 g/kg of SDA. The proliferations of enterobacteria, yeasts, molds and clostridia were inhibited by SDA, resulted in lower ethanol, propionic and butyric acid concentrations and dry matter loss in SDA treated silages than control. The increasing SDA linearly decreased free amino acid N (p<0.001), ammonia N (p = 0.018) and non-protein N (p<0.001), while linearly increased water soluble carbohydrate (p<0.001) and peptide N (p<0.001). It is speculated that SDA accelerated the shift from homofermentative to heterofermentative lactic acid bacteria during the silage fermentation, indicated by lower lactic acid production in SDA-9 than SDA-7 silages after 60 days of ensiling. Alfalfa silages treated with SDA at 7 g/kg had highest Flieg’s point and remained stable more than 9 d during aerobic exposure under humid and hot conditions in southern China.
SDA may be used as an additive for alfalfa silages at a level of 7 g/kg.
Keywords: Alfalfa; Fermentation Quality; Sodium Diacetate; Silage
Editorial Office
Asian-Australasian Association of Animal Production Societies(AAAP)
Room 708 Sammo Sporex, 23, Sillim-ro 59-gil, Gwanak-gu, Seoul
08776, Korea   TEL : +82-2-888-6558    FAX : +82-2-888-6559   
E-mail : jongkha@hotmail.com
About |  Browse Articles |  Current Issue |  For Authors and Reviewers |  Privacy Policy
Copyright © 2014 by Asian-Australasian Journal of Animal Sciences. All rights reserved.                 powerd by m2community