Elias Ibrahimi Khoram Abadi; mohsen kazemi; Reza Tohidi
Abstract
Nanotechnology brings new solution for improving ruminal fermentation. Meta-analysis study of the effect of nanoparticles on ruminal fermentation can help to better understand how to manipulate ruminal fermentation. After searching and selecting appropriate articles, data related to ruminal fermentation ...
Read More
Nanotechnology brings new solution for improving ruminal fermentation. Meta-analysis study of the effect of nanoparticles on ruminal fermentation can help to better understand how to manipulate ruminal fermentation. After searching and selecting appropriate articles, data related to ruminal fermentation parameters were extracted. Meta-analyses were carried out using the Comprehensive Meta-Analysis package, version 3. The effect sizes of across studies were calculated with fixed and random effect models. Possible publication bias was evaluated with funnel plot and statistical tests. The results of meta-analysis showed that the administration of nanoparticles in the diet, has a positive effect on gas production, total VFAs concentration and apparent dry matter digestibility. Addition of nanoparticles in the diet decrease N-NH3 concentration. The values of I2 for GP and TVFAs indicated moderate and values of I2 for N-NH3 concentration and apparent dry matter digestibility effect size indicated high heterogeneity, respectively. Administration of nanoparticles can improve ruminal fermentation process due to its positive effects on microbial growth, fiber degradation, DM digestibility, TVFAs concentration, and reduce the ratio of acetate to propionate and methane production.
mohsen kazemi; Elias Ibrahimi Khoram Abadi; Reza Valizadeh; Somaye Heydari; A. Eskandari
Abstract
An experiment was conducted to investigate two adsorbents containing ash prepared from the melon skin and sodium bentonite in removing bromocresol green as water pollutant in a culture medium prepared from rumen microorganisms and artificial salivary. Bromocresol green at three levels (0, 5 and 10 ppm) ...
Read More
An experiment was conducted to investigate two adsorbents containing ash prepared from the melon skin and sodium bentonite in removing bromocresol green as water pollutant in a culture medium prepared from rumen microorganisms and artificial salivary. Bromocresol green at three levels (0, 5 and 10 ppm) with processed sodium bentonite or ash prepared from melon skin, each at three levels (0, 4 and 8 mg) were used with a 3×2×3 factorial experiment in a laboratory media according to completely randomized design. Some of the fermentation parameters were estimated in the culture medium and the effect of adsorbents on bromocresol green removal was also evaluated in water at 3 and 24 hours. The effective removal of dye was observed (especially at 4% skin melon ash) when two adsorbent was added to water. Compared to the control, the gas production potential, cumulative gas production after 12, 24 and 48h incubation, metabolizable energy, short chain fatty acids, net energy for lactation, microbial protein yield, and organic matter digestibility increased significantly (P<0.05) when 5ppm of dye was added to the culture medium, but the 10 ppm of dye resulted in a decrease in these parameters. Generally, the addition of two adsorbents to the culture medium not only did not reduce the negative effects of the dye (10 ppm) on the fermentation parameters but also reduced some of these parameters and also it seems that ruminal microorganisms can use bromocerosol green (up to 5 ppm) to increase their fermentation parameters.
