Effects of sodium diacetate on the fermentation profile, chemical composition and aerobic stability of alfalfa silage
Objective 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. Methods Fresh alfalfa was ensiled with various concentrations of SDA (0, 3, 5, 7, and 9 g/kg of fresh...
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| Format: | Article |
| Language: | English |
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Asian-Australasian Association of Animal Production Societies
2017-06-01
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| Series: | Asian-Australasian Journal of Animal Sciences |
| Subjects: | |
| Online Access: | http://www.ajas.info/upload/pdf/ajas-30-6-804.pdf |
| _version_ | 1828314338457288704 |
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| author | XianJun Yuan AiYou Wen Seare T. Desta Jian Wang Tao Shao |
| author_facet | XianJun Yuan AiYou Wen Seare T. Desta Jian Wang Tao Shao |
| author_sort | XianJun Yuan |
| collection | DOAJ |
| description | Objective 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. Methods 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. Results 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. Conclusion SDA may be used as an additive for alfalfa silages at a level of 7 g/kg. |
| first_indexed | 2024-04-13T16:43:48Z |
| format | Article |
| id | doaj.art-84d7eed52d434a239101bb9d4e3532a2 |
| institution | Directory Open Access Journal |
| issn | 1011-2367 1976-5517 |
| language | English |
| last_indexed | 2024-04-13T16:43:48Z |
| publishDate | 2017-06-01 |
| publisher | Asian-Australasian Association of Animal Production Societies |
| record_format | Article |
| series | Asian-Australasian Journal of Animal Sciences |
| spelling | doaj.art-84d7eed52d434a239101bb9d4e3532a22022-12-22T02:39:09ZengAsian-Australasian Association of Animal Production SocietiesAsian-Australasian Journal of Animal Sciences1011-23671976-55172017-06-0130680481010.5713/ajas.16.077323677Effects of sodium diacetate on the fermentation profile, chemical composition and aerobic stability of alfalfa silageXianJun Yuan0AiYou Wen1Seare T. Desta2Jian Wang3Tao Shao4 Institute of Ensiling and Processing of Grass, Nanjing Agricultural University, Nanjing 210095, China Institute of Ensiling and Processing of Grass, Nanjing Agricultural University, Nanjing 210095, China Institute of Ensiling and Processing of Grass, Nanjing Agricultural University, Nanjing 210095, China Institute of Ensiling and Processing of Grass, Nanjing Agricultural University, Nanjing 210095, China Institute of Ensiling and Processing of Grass, Nanjing Agricultural University, Nanjing 210095, ChinaObjective 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. Methods 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. Results 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. Conclusion SDA may be used as an additive for alfalfa silages at a level of 7 g/kg.http://www.ajas.info/upload/pdf/ajas-30-6-804.pdfAlfalfaFermentation QualitySodium DiacetateSilage |
| spellingShingle | XianJun Yuan AiYou Wen Seare T. Desta Jian Wang Tao Shao Effects of sodium diacetate on the fermentation profile, chemical composition and aerobic stability of alfalfa silage Asian-Australasian Journal of Animal Sciences Alfalfa Fermentation Quality Sodium Diacetate Silage |
| title | Effects of sodium diacetate on the fermentation profile, chemical composition and aerobic stability of alfalfa silage |
| title_full | Effects of sodium diacetate on the fermentation profile, chemical composition and aerobic stability of alfalfa silage |
| title_fullStr | Effects of sodium diacetate on the fermentation profile, chemical composition and aerobic stability of alfalfa silage |
| title_full_unstemmed | Effects of sodium diacetate on the fermentation profile, chemical composition and aerobic stability of alfalfa silage |
| title_short | Effects of sodium diacetate on the fermentation profile, chemical composition and aerobic stability of alfalfa silage |
| title_sort | effects of sodium diacetate on the fermentation profile chemical composition and aerobic stability of alfalfa silage |
| topic | Alfalfa Fermentation Quality Sodium Diacetate Silage |
| url | http://www.ajas.info/upload/pdf/ajas-30-6-804.pdf |
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