Application of algae extract as antibiotic substitute in feed
A technology of algae extract and antibiotics, applied in the direction of animal feed, animal feed, application, etc., to avoid drug resistance, enhance nutrition, and enhance animal immunity
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Embodiment 1
[0026] The cultivated chlorella is centrifuged to obtain the algae, dried, and ultrafinely crushed, and the fatty acids are extracted by alkaline ether extraction, and the average content of ω-3 unsaturated fatty acids is detected by gas chromatography-mass spectrometry . Chlorella powder with an average content of omega-3 unsaturated fatty acids not less than 1% is selected as a raw material, sterilized by ultraviolet radiation, sealed and bagged to obtain a finished product.
[0027]Piglet feeding experiment
[0028] Sixty 45-day-old three-way hybrid piglets with no disease and similar body weight were selected and randomly divided into 3 groups, 20 pigs in each group: Group A experimental group, Group B control group, and Group C blank group. The experiment was carried out for 60 days, and the rats were fed three times a day in the morning, noon and evening, and had free access to water. After the feeding experiment, the animals were fasted for 5 hours under the condition...
Embodiment 2
[0048] The cultivated spirulina is centrifuged to obtain the algal body, dried, ultrafinely crushed, and the fatty acid is extracted by the alkaline ether extraction method, and the average content of the ω-3 unsaturated fatty acid is detected by the gas chromatography-mass spectrometry method. Chlorella powder with an average content of ω-3 unsaturated fatty acids not less than 1% is selected as raw material, and after supercritical carbon dioxide extraction, seaweed oil with an ω-3 unsaturated fatty acid content of more than 50% is obtained, which is sealed and packaged. finished product.
[0049] Broiler Feeding Experiment
[0050] Select 300 yellow-feathered broilers on the 3rd, randomly screen the ratio of female and male, and divide them into three groups, 100 in each group, the experimental group of group A (add the above-mentioned finished product in the daily feed according to the ratio of 1:2500), and the control group of group B. Group (using antibiotics Changyan L...
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