Effect On The Feed Additives Such As Pine Needles Etc. Activated With Physical Technics

With the enhancement of people's living standard, the demand of the livestock product increases constantly. So the stock raising develops rapidly, which causes the development of the feed. Therefore, people go deep in to the study of the feeds, this thesis studies the peculiarities and technics of the feed additives such as pine needles.The pine needles and all kinds of agricultural castoffs are activated with physical technics, the performances of the activated samples are analyzed. Firstly, the solubility, the granularity and the content of the proteins are analyzed, the results show that, the samples activated with physical technics are much smaller, their solubility increases obviously and they contain more proteins; when the pine needles and the secondary materials are mixed by 1:1, then activated for 6-9 minutes, the samples are small, they can easy to dissolve, and they contain the most proteins. Secondly, the microstructures of the samples are detected by optical microscopes and SEM. The results show that, the granularities of the activated samples are mostly below 10μm, which is smaller than the cells of the plants, so the cellular walls are broken. When the pine needles are activated with a kind of crisp materials, more broken cells can be produced. While the IR spectral analysis shows that, after activated with physical technics, the samples contain more amino acids, and the activity builds up.Besides, the toxicity, the effect of restraining bacillus and feeding animals are analyzed, the results show that the feed additives are innocuous, while they can restrain Golden Staphylococcus. The samples are rich in alimentation, so they have good effects to feed the animals.It's very easy to activate pine needles with physical technics, the samples are rich in alimentation, which can also restrain some bacillus, so the samples are suitable to be used as feed additives.