Effect of addition of sodium dehydroacetate on the fermentation of blue-grass silage

Abstract

The objective of this trial was to examine the effect of applying sodium dehydroacetate on the fermentation of blue-grass silage. Whole plant blue-grass was ensiled in laboratory bags after treated with sodium dehydroacetate at three rates, 0.05% of fresh weight (SD1), 0.1% of fresh weight (SD2), and 0.2% of fresh weight (SD3), LuproMix NC as a positive control (0.35% of fresh weight), or no additive (untreated). The each SD treatment had lower the fi nal pH than the untreated (P<0.05), but the difference was not signifi cant compared with positive control (P>0.05). All the three SD treatments had lower ammonia nitrogen (as % total nitrogen) than the untreated (P<0.05), and the signifi cant differences in ammonia nitrogen between SD3 treatment and LuproMix treatment were observed (P<0.05). Lactic acid bacteria count (cfu/g) after ensiling were unaffected by application rates of SD, but yeast/mold counts were lower for SD treatments than both controls. The SD3 treatment had the greatest the lactic acid concentration and ratio of lactic acid:acetic acid, while LuproMix had the lowest the lactic acid concentration and the ratio. Except for SD3, there were no differences in the lactic acid concentration among all the treatments. Thus, it is concluded that blue-grass silage quality can be improved by using SD3 as a antifungal additive to reduce the growth of detrimental bacteria.

Research progress in physiological effects of resistant substances of Urtica dioica L. on animal performance and feed conversion

“…However, acute gastric dilatation occurred because of rough feeding of camels and a large amount of nettles consumed during the budding and re-greening period. Similarly, Zhang and Zhao (2008) found a significant increase in milk production, rapid lamb growth, and a significant decrease in disease rate in pregnant ewes upon feeding nettle as a forage. Nettle was found to be an ideal feed ingredient for raising beef calves and heifers throughout fodder scarcity time period by having high-quality nutritional and flowering stages.…”

“…Likewise, it has low sodium content, which is advantageous for growth and development of an individual. Protein and essential amino acids are present in abundant quantity in roots, stems, leaves, fruits, and chelonian, out of which 70% proteins are digestible ( Zhang and Zhao, 2008 ). It was observed that the protein content of leaves before flowering was higher compared with after flowering, which was 27.4% and 20.7%, respectively.…”

“…Under shade, it was found that the concentration of total chlorophyll, chlorophyll a, and chlorophyll b in U. dioica L. leaves grew dramatically, which results in high vitamin C, folic acid, vitamins A and E content, and several other nutrients. Its leaves contain 140 and 300 mg of carotenoids and 1,000–2,000 mg of vitamin C on dry matter basis ( Zhang and Zhao, 2008 ). It contains rich quantity of minerals, which helps in balancing Cu/Zn ratio in the human body that can prevent cardiovascular and other disorders ( Han et al., 2001 ).…”

Inhibition effect of preservatives or disinfectants on F. concentricum from postharvest asparagus ( Asparagus officinalis L.) spear in vitro and in vivo

“…Sodium dehydroacetate is widely used as food preservative with antifungal activities against many pathogens (Kulshreshtha et al., 2009; Zhang et al., 2016). In the fermentation of blue‐grass silage, 0.2 g/L Na‐DHA reduced the growth of pathogenic microorganisms (Zhang et al., 2007). Tang et al.…”

The tissue residues of sodium dehydroacetate used as feed preservative in swine

“…Na‐DHA and monolaurin have synergistic effects against Escherichia coli and Bacillus subtilis . When whole plant blue‐grass is ensiled with 500–2000 mg kg −1 Na‐DHA, pH values and ammonia nitrogen contents decrease and yeast and mould counts are reduced . In China, Na‐DHA has been mostly used as an antifungal agent in animal feed.…”