How to determine the effectiveness of using Bacillus amyloliquefaciens

After using Bacillus amyloliquefaciens in aquaculture animals, its effectiveness can be judged from the following aspects:

Water quality indicators

Ammonia nitrogen and nitrite content: Bacillus amyloliquefaciens can degrade organic matter in water, promote the recycling of nitrogen elements, and thus reduce the content of ammonia nitrogen and nitrite in water. Regularly check the water quality after use. If the levels of ammonia nitrogen and nitrite significantly decrease, it indicates that Bacillus amyloliquefaciens has played a role in improving water quality and effectively reducing the accumulation of harmful substances in aquaculture water

Dissolved oxygen content: This bacterium can decompose organic matter, reduce the content of oxygen consuming substances in water, and thereby increase the dissolved oxygen content of water. The dissolved oxygen level in water can be detected by equipment such as a dissolved oxygen meter. If the dissolved oxygen level increases, it indicates that it has a positive effect on improving water quality and is beneficial for the growth of aquaculture animals

Transparency: Bacillus amyloliquefaciens can decompose suspended organic matter in water, increasing the transparency of the water. If the water becomes clearer and more transparent after use, it indicates that it has played a role in purifying water quality and providing a better living environment for aquaculture animals.

Growth performance of farmed animals

Growth rate: Effective starch solubilizing Bacillus subtilis can improve the feed utilization efficiency of aquaculture animals, promote their growth and development, and accelerate their weight and body length growth. The weight and length of farmed animals can be measured regularly and compared with the control group that did not use Bacillus amyloliquefaciens. If the growth rate of the use group is significantly faster than that of the control group, it indicates that it has a positive impact on growth performance

Feed conversion rate: Evaluate the effectiveness of Bacillus amyloliquefaciens by calculating the feed conversion rate. Feed conversion rate=amount of feed consumed/animal weight gain. If Bacillus amyloliquefaciens is used, the feed conversion rate increases, which means that farmed animals gain more weight while consuming the same amount of feed. This indicates that it promotes the digestion and absorption of feed by farmed animals and improves the efficiency of feed utilization

Disease occurrence situation

Incidence rate: Bacillus amyloliquefaciens can inhibit the growth of harmful bacteria, enhance the immunity of breeding animals, thereby reducing the incidence of disease. During the breeding process, observe and record the incidence of breeding animals, and calculate the incidence rate. If the incidence rate of Bacillus amyloliquefaciens is significantly reduced after the use of Bacillus amyloliquefaciens, it shows that it has a certain effect on disease prevention and helps to maintain the health of breeding animals

Disease treatment effect: When diseases occur in farmed animals, Bacillus amyloliquefaciens is used in combination with treatment, and the cure time and cure rate of the disease are observed. If the treatment group using Bacillus amyloliquefaciens has a shorter cure time and higher cure rate compared to the group without using the bacterium, it indicates that it has an auxiliary effect on the treatment of diseases and can help livestock recover faster.

Gut Health Status

Gut microbiota structure: By conducting microbial testing on the intestinal contents of farmed animals, the types and quantities of gut microbiota are analyzed. If the use of Bacillus amyloliquefaciens increases the number of beneficial bacteria and reduces the number of harmful bacteria, and the structure of the intestinal microbiota tends to be balanced, it indicates that it is beneficial for maintaining the stability of the intestinal microbiota of farmed animals and promoting intestinal health

Intestinal morphology and function: Dissect and observe the intestines of farmed animals to examine their morphological structure, such as intestinal wall thickness, villus length, etc. A healthy gut has thicker intestinal walls and longer villi, which facilitate the absorption of nutrients. If the use of Bacillus amyloliquefaciens results in good intestinal morphology, thickening of intestinal walls, lengthening of villi, and increased activity of intestinal digestive enzymes, it indicates that it has a positive promoting effect on intestinal health, thereby improving the digestion and absorption capacity of farmed animals

Behavioral performance

Feeding behavior: Bacillus amyloliquefaciens, as a biological feed additive, can increase the appetite of aquaculture animals. Observing the feeding behavior of farmed animals, if they become more active and proactive in feeding after use, and their food intake increases, it indicates that their feeding effect on farmed animals is good, which can increase their food intake and provide sufficient nutrition for growth

Activity ability: Healthy farmed animals usually have strong activity ability. After using Bacillus amyloliquefaciens, if the activities of farmed animals become more lively, agile, and energetic, it indicates that their physical condition is good. Bacillus amyloliquefaciens has played a role in improving the health and stress resistance of farmed animals.