Jose Garcia

In response to Dr. Marchenkov. Sorry, but I disagree very strongly! Animal feed mixing is very predominantly a dry mixing process. As soon as you add small quantities of ANY liquid into this dry mix you start to get "balling" where dry particles aglomerate. This immediately reduces homogeneity. As well as the basic physical mixing problems of adding liquids to a solid mix, we have the additional p ...

Dear Ricardo Hume ,Please let me comment your last message to avoid any confusion:On one hand, we speak about homogeneity of repartition of an additive in a batch of feed, where the CV translates the variability between N samples taken from a same batch. I mentioned that a CV of 10% is acceptable, you prefer to say 5%, it is OK, I will not comment further.On the other hand, you mention "...a dosag ...

Dear Ricardo Hume I do not want to give the impression that there is any disagreement between us or even that I am downplaying the importance of the homogeneous distribution of additives in food, quite the contrary! My speech is as follows: monitor the performance of the mixers regularly (every year), set limits for the recovery rate and CV, implement corrective actions if the results are outsid ...

Marc, see what other experts think about a CV = 10%. All About Feed Magazine Wayne Cooper Feed mill and machinery expert Expert opinion 18 May 2020 The CV of Ok, so this is a pet peeve of mine. This standard has been in place since 1985….forever! Is it not time to step up our game? I had actually thought our major challenge would always be medications. However, as medications are cut back, we ...

Marc,In my opinion a CV = 10% is no good enough. It means that the additive is present in the feed at plus or minus 20% of the average intended dose. I don't think this is acceptable, at least for poultry.A CV = 5% means that the distribution of the product is between plus or minus 10% of the average; this is what I consider a satisfactory distribution for an additive.