Paul B. Tillman, Ph.D. likes the comment:
Syed Farjad Zaidi The optimum particle size for about 5-8% of the total diet should be about 1200 microns. Include only 3% course ground corn in starter feed to allow birds condition their gut, and then increase this to about 5% in the grower diet, and up to 8% in the finisher diet. This will help the bird condition their gizzard, which is the pace-setter for gut motility and intestinal function ...
Paul B. Tillman, Ph.D. likes the comment:
Generally, a good review, as Dave indicated. Vegetable source proteins have their own “problems” as do animal sources. Bear in mind the “ease” of using one or the other exclusively depends on the animal. Herbivores employ a rumen or cecum with microbes doing the “work” to provide a “balanced” protein. Carnivores have adapted to optimize use of flesh, ...
Paul B. Tillman, Ph.D. likes the comment:
Good summary article, but take care, grain and soya products also have a host of problems like the meat products cited. I have fed broilers no meat product diets for 20 years and there are problems with these grain, soybean meal, canola meal, pea protein, isolated protein sources, millet and sorghum based diets. Excellent nutrition is required for successful animal production with either type of ...
This member gave a presentation on January 27, 2020
At the following event:
IPPE - International Production & Processing Expo 2020
Paul B. Tillman, Ph.D. likes the comment:
The article was written as per applications in ruminant production systems. I know, by experience, that producers have "overfed" antibiotics for years. Not from the standpoint of feeding higher levels that legally allowed but in situations where it may not have been necessary. I.e. feeding it as a form of insurance. Personally, no, I don't believe that fed antibiotics, particularly in ruminants ha ...
Paul B. Tillman, Ph.D. likes the comment:
Many thanks for all the kind and thought provoking comments! @Prof. Donzele, I agree that other the immune system requirements for other 'non-essential' amino acids should also be considered (as my review was already rather lengthy this was not really covered). This is definitely a topic to investigate further when formulating diets for challenging conditions.
Paul B. Tillman, Ph.D. likes the comment:
5-6 years ago, this topic was very hot in the market. We collected some sample of different sources of Herbal-Met and analyzed them. Although we know the content, but in order to check them in real situation, we conducted couple of well-organized university trials “comparing Herbal-Met and DL-MET “. Herbal-Met had zero effect on chicken performance. For example analytical report of one the sample ...
Paul B. Tillman, Ph.D. likes the comment:
This video is factually incorrect. Methionine is an essential amino acid, meaning that in higher animals it cannot be synthesised; it must be consumed within the diet. Plants and micro-organisms can synthesise methionine. Whenever a properly designed and conducted comparison trial is conducted, the equivalence of these herbal products is invariably around 3%. In other words, they are NOT effecti ...
Paul B. Tillman, Ph.D. likes the comment:
In addition, the antibiotics used for this purpose are not absorbed and work in the intestinal tract resulting in healthier chickens, thus accounting for the improved performance. They are NOT absorbed into the chicken's body and thus not passed on to the consumer. I may not be totally correct (but I think I am) the growth-promoting antibiotics used in the US poultry industry are not used in human ...
Participation in Forum on September 5, 2019
Steve Roach As noted above, Bacitracin is 100% Unabsorbed. In fact, FDA/CVM had quit asking for data on this point, when potentially new combinations were submitted, as it had been proven too many times before. As the EU (including WHO) has adopted the precautionary principle versus the precautionary approach, their classification is not surprising. In addition, bacitracin in humans is only used t ...
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