| Abstrakt: |
Background and Objectives: In order to increase efficiency and productivity, the need to use high-energy concentrate in dairy cows' rations seems to be essential. This type of feed increases the risk of subacute ruminal acidosis, which leads to reduced dry matter intake, milk production, and fat content. Therefore, different types of buffers are used to reduce the above consequences. Most buffers used in livestock farms include sodium carbonate, potassium bicarbonate, potassium carbonate, potassium bicarbonate, magnesium oxide, magnesium carbonate, and bentonite. Scientific reports on rations containing buffers have a significant effect on fermentation parameters such as volume of gas production, potential, and consistent rate of gas production. Materials and Methods: In this study, three types of rations for dairy cows composed of 50:50, 40:60, and 30:70 forage to concentrate ratios and 4 types of buffers and alkalizer including sodium bicarbonate, sodium carbonate, potassium carbonate, and magnesium carbonate were examined using in vitro technique. The sequence of this experiment included determining the initial pH, buffering capacity, and buffering value index, determining the effect of buffers on the rate of fermentation parameters, microbial production, and utilizable crude protein at the duodenum of different diets in terms of forage to concentrate ratios. Results: The results of this experiment showed that the highest acidogenicity value was related to the treatment of low forage rations containing sodium bicarbonate buffer, which was significantly different from the control treatment. The rate of microbial protein production, in the gas technique, indicated that the highest amount of microbial protein was produced in the low-forage ration containing sodium bicarbonate buffer. In the microbial protein production experiment, it could be used in the small intestine. The highest amount of protein that could be used in the small intestine at eight and Twenty-four hours was related to the treatment of low forage feed containing sodium bicarbonate buffer. Conclusion: The results of treatments indicated that the buffering capacity of sodium carbonate, potassium carbonate, and magnesium carbonate was significantly higher than sodium bicarbonate. The use of sodium bicarbonate and potassium carbonate buffers in low-forage diets increase gas production and production of microbial protein. It seems that among the evaluated compounds, sodium bicarbonate and potassium carbonate have the best effect on the production of microbial protein and utilizable crude protein at the duodenum in different diets in terms of the ratio of forage to concentrate. [ABSTRACT FROM AUTHOR] |
