Effect of ensiling whole crop oat with lucerne in different ratios on fermentation quality, aerobic stability and in vitro digestibility on the Tibetan plateau

2016 ◽  
Vol 101 (5) ◽  
pp. e144-e153 ◽  
Author(s):  
L. Chen ◽  
G. Guo ◽  
X. J. Yuan ◽  
J. Zhang ◽  
A. Y. Wen ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
In Vitro Digestibility ◽  
The Tibetan Plateau ◽  
Aerobic Stability ◽  
Fermentation Quality

scholarly journals Evaluating fermentation quality, in vitro digestibility and aerobic stability of a total mixed ration ensiled with different additives on Tibet plateau

2021 ◽  
Vol 34 (2) ◽  
pp. 223-232
Author(s):  
Zhihao Dong ◽  
Siran Wang ◽  
Jie Zhao ◽  
Junfeng Li ◽  
Qinhua Liu ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Tibetan Plateau ◽  
Propionic Acid ◽  
Utilization Efficiency ◽  
Tibet Plateau ◽  
In Vitro Digestibility ◽  
Total Mixed Ration ◽  
Aerobic Stability ◽  
Fermentation Quality

Objective: To investigate the improvement in utilization efficiency of total mixed ration (TMR) on Tibetan plateau, TMR were ensiled with different additives.Methods: A total of 150 experimental silos were prepared in a completely randomized design to evaluate the six treatments: i) control (without additive), ii) <i>Lactobacillus buchneri</i> (<i>L. buchneri</i>), iii) acetic acid, iv) propionic acid, v) 1,2-propanediol; and vi) 1-propanol. After 90 days of ensiling, silos were opened for fermentation quality and <i>in vitro</i> analysis, and then subjected to an aerobic stability test for 14 days.Results: Treating with <i>L. buchneri</i>, acetic acid, 1,2-propanediol and 1-propanol decreased propionic acid contents and yeast number, whereas increased (p<0.05) pH, acetic acid and ethanol contents in the fermented TMR. Despite increased dry matter (DM) loss in the TMRs treated with 1,2-propanediol and 1-pronanol, additives did not affect (p>0.05) all <i>in vitro</i> parameters including gas production at 24 h (GP<sub>24</sub>), GP rate constant, potential GP, <i>in vitro</i> DM digestibility and <i>in vitro</i> neutral detergent fibre digestibility. All additives improved the aerobic stability of ensiled TMR to different extents. Specially, aerobic stability of the ensiled TMR were substantially improved by <i>L. buchneri</i>, acetic acid, 1,2-propanediol, and 1-propanol, indicated by stable pH and lactic acid content during the aerobic stability test.Conclusion: <i>L. buchneri</i>, acetic acid, 1,2-propanediol, and 1-propanol had no adverse effect on <i>in vitro</i> digestibility, while ensiling TMR with the additives produced more acetic acid and ethanol, subsequently resulting in improvement of aerobic stability. There is a potential for some fermentation boosting additives to enhance aerobic stability of fermented TMR on Tibetan plateau.

Fermentation quality, in vitro digestibility and aerobic stability of total mixed ration silages prepared with whole-plant corn (Zea mays L.) and hulless barley (Hordeum vulgare L.) straw

2018 ◽  
Vol 58 (10) ◽  
pp. 1860 ◽  
Author(s):  
XianJun Yuan ◽  
AiYou Wen ◽  
Jian Wang ◽  
JunFeng Li ◽  
Seare T. Desta ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Lactobacillus Plantarum ◽  
Ammonia Nitrogen ◽  
Stability Test ◽  
Small Scale ◽  
In Vitro Digestibility ◽  
Total Mixed Ration ◽  
Aerobic Stability ◽  
Fermentation Quality

This study was carried out to assess the effects of adding Lactobacillus plantarum, molasses or/and ethanol on the fermentation quality, in vitro digestibility and aerobic stability of total mixed ration (TMR) silage, which is well accepted in small-scale dairy farms in Tibet. Total mixed ration were ensiled in laboratory silos (1 L) and treated with (1) no additive (Control), (2) ethanol (E, 25 ml/kg fresh weight (FW)), (3) molasses (M, 30 g/kg FW); (4) Lactobacillus plantarum (L, 106cfu/g FW); (5) ethanol + molasses (EM); and (6) ethanol + Lactobacillus plantarum (EL). After 45 days of ensiling, six silos per treatment were opened for the fermentation quality and in vitro digestibility analyses, whereas 18 silos were used for the aerobic stability test for the following 9 days. All TMR silages were well preserved with dominant lactic acid (LA), low pH and ammonia nitrogen, and negligible propionic and butyric acid. The L and EL silages had the lowest pH and highest LA concentrations. The addition of ethanol did not inhibit silage fermentation as there were no significant differences for the pH, LA, acetic acid, negligible propionic acid or ammonia nitrogen content, lactic acid bacteria and yeast counts between Control and the E silage. During the aerobic stability test, pH increased by 1.39, 1.67, 1.69 and 0.74 for the Control, M, L and EM silages, but only 0.40 and 0.34 for E and EL silages, respectively. Upon exposure to air, the LA concentration in the L silage was evidently (P < 0.05) decreased, whereas LA concentration in the EL silage remained the highest value after the third day of aerobic exposure. Mean populations of aerobic bacteria and yeast in the E and EL silages were lower (P < 0.05) than those of the Control. These findings suggested that L. plantarum is effective in improving fermentation quality of TMR silages. Although the addition of ethanol in our study did not depress the fermentation of the TMR silages, it showed potential to inhibit the aerobic spoilage of TMR silages, either alone or in combination with the L. plantarum. It is concluded that L. plantarum combined with ethanol not only ensures better fermentation but also could improve aerobic stability.

scholarly journals Effects of the Application of Lactobacillus plantarum Inoculant and Potassium Sorbate on the Fermentation Quality, In Vitro Digestibility and Aerobic Stability of Total Mixed Ration Silage Based on Alfalfa Silage

Animals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2229
Author(s):  
Yixiao Xie ◽  
Shengyang Xu ◽  
Wenqi Li ◽  
Musen Wang ◽  
Zhe Wu ◽  
...  
Keyword(s):  
Lactobacillus Plantarum ◽  
Water Soluble ◽  
Potassium Sorbate ◽  
In Vitro Digestibility ◽  
N Content ◽  
Total Mixed Ration ◽  
Aerobic Stability ◽  
Fermentation Quality ◽  
Alfalfa Silage

This study aimed to evaluate the effect of the application of an inoculant and a preservative on the fermentation quality, in vitro digestibility, and aerobic stability of alfalfa silage-based fermented total mixed ration (TMR). The TMR was ensiled with (1) no additives (control), (2) Lactobacillus plantarum (LP), or (3) potassium sorbate (PS). The V-scores of all silages were higher than 80 points during the 30 days of ensiling. The addition of LP and PS had no effects on the in vitro parameters, such as in vitro digestibility and in vitro gas production (p > 0.05). LP-treated silage showed similar fermentation quality and comparable aerobic stability to the control (110 h). The LP only decreased the ammonia nitrogen (NH3-N) content (p < 0.05) during ensiling. The PS significantly increased the pH of TMR silages (p < 0.05). Meanwhile, the addition of PS improved the aerobic stability (>162 h) of TMR silage, indicated by the higher water-soluble carbohydrate content and lower NH3-N content in comparison with those in the control after aerobic exposure (p < 0.05). The improvement in fermentation quality is extremely small in terms of applying LP in TMR silage based on a large percentage of other silage ingredients. The PS is effective in conserving unpacked TMR silage and showed the potential to reduce the risk of ruminal acidosis in livestock.

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