Feed additive with effect of improving of nitrogen stress resistance of tilapia mossambica
A feed additive, nitrogen stress technology, applied in the direction of animal feed, animal feed, additional food elements, etc., can solve the problems of stress time death, reduced food intake, slow growth and other problems
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Embodiment 1
[0019] A feed additive for improving nitrogen stress tolerance of tilapia, specifically,
[0020] The feed is added with potato juice with a Baume degree of 16 as the culture substrate, and the inoculation activity is 1×10 in proportion to 1.5‰ by weight. 8 cfu / ml Saccharomyces cerevisiae, obtained after 4-stage fermentation treatment, high-temperature sterilization, and spray drying. The 4-stage fermentation process is as follows:
[0021] Inoculate brewer's yeast into potato juice and rotate and ferment at 28°C for 2 hours, which is a stage of fermentation;
[0022] After the first stage of fermentation is over, add 0.33% by weight vitamin B2 to the potato juice, and continue to rotate and ferment for 3 hours at 22°C, which is the second stage of fermentation;
[0023] After the second-stage fermentation, add 0.18% lysine by weight to the potato juice, and continue to rotate and ferment for 3 hours at 32°C, which is the third-stage fermentation;
[0024] After the three-st...
Embodiment 2
[0027] A feed additive for improving nitrogen stress tolerance of tilapia, specifically,
[0028] The feed is added with potato juice with a Baume degree of 18 as the culture substrate, and the inoculation activity is 1×10 in proportion to 1.8‰ by weight. 8 cfu / ml Saccharomyces cerevisiae, obtained after 4-stage fermentation treatment, high-temperature sterilization, and spray drying. The 4-stage fermentation process is as follows:
[0029] Inoculate brewer's yeast into potato juice and rotate and ferment at 30°C for 3 hours, which is a stage of fermentation;
[0030] After the first stage of fermentation is over, add 0.35% by weight vitamin B2 to the potato juice, and continue to rotate and ferment for 3.5 hours at 26°C, which is the second stage of fermentation;
[0031] After the second-stage fermentation, add 0.22% lysine by weight to the potato juice, and continue to rotate and ferment for 4 hours at 35°C, which is the third-stage fermentation;
[0032] After the three-...
Embodiment 3
[0035] A feed additive for improving nitrogen stress tolerance of tilapia, specifically,
[0036] The feed is added with potato juice with a Baume degree of 17 as the culture substrate, and the inoculation activity is 1×10 in proportion to 1.6‰ by weight. 8 cfu / ml Saccharomyces cerevisiae, obtained after 4-stage fermentation treatment, high-temperature sterilization, and spray drying. The 4-stage fermentation process is as follows:
[0037] Inoculate brewer's yeast into potato juice and rotate and ferment at 29°C for 2.5 hours, which is one-stage fermentation;
[0038] After the first stage of fermentation, add 0.34% by weight vitamin B2 to the potato juice, and continue to rotate and ferment for 3.2 hours at 24°C, which is the second stage of fermentation;
[0039] After the second-stage fermentation, add 0.2% lysine by weight to the potato juice, and continue to rotate and ferment for 3.5 hours at 33°C, which is the third-stage fermentation;
[0040] After the three-stage ...
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