Breeding technology of beef cattle with selenium-rich beef
A breeding technology, beef cattle breeding technology, applied in animal feed, additional food elements, animal feed, etc., can solve problems such as poisoning, affecting cattle food intake, and inability to feed for a long time, so as to achieve ecological environment, improve feed digestibility, and improve Effects on Growth and Productivity
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Embodiment I
[0021] The selenium-enriched diet is obtained by adding selenium-containing amino acid animal nutrient solution to the mixed concentrate in the breeding stage of fattening beef cattle, and the mass concentration of selenium reaches the range of 8mg / kg~12mg / kg. Because of the breeding technology of selenium-enriched beef and beef cattle of the present invention, as long as the method of feeding the above-mentioned mixed concentrate ration with selenium-containing amino acid animal nutrient solution is fed from 25d to 35d before slaughter, the selenium content in selenium-enriched beef can be 0.20-0.50 mg / kg index requirements.
Embodiment 2
[0023] The selenium content determination results of the mixed concentrate after adding selenium-containing amino acid animal nutrient solution:
[0024] The selenium content (calculated as it is) in the mixed concentrate without adding selenium-containing amino acid animal nutrient solution is 0.025mg / kg~0.037mg / kg, while the selenium content (calculated as it is) in the mixed concentrate with selenium-containing amino acid animal nutrient solution ) is 10.02mg / kg~10.06mg / kg.
Embodiment 3
[0026] Determination results of selenium content in beef after fattening beef cattle fed with selenium-containing amino acid animal nutrient solution mixed concentrate:
[0027] The selenium content (in fresh samples) of the beef cattle fed with the mixed concentrate feed without adding selenium-containing amino acid animal nutrient solution is 0.105 mg / kg-0.115 mg / kg, while the beef cattle fed with the mixed concentrate feed with selenium-containing amino acid animal nutrient solution The selenium content (in fresh samples) in beef cattle is 0.266mg / kg-0.285mg / kg.
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