Effects of modest improvements in pellet quality and experiment pen size on broiler chicken performance
Dr. Mohammad Arshad Pellet quality per se is not only related to the temperature and addition of steam but also to the raw materials used in the diet. The fat content in the feed and addition of for example molasses or other pellet binders affect pellet quality. Depending on national regulation a minimum temperature of >80°C is required to kill zoonoses like Salmonella, however, increasing pelleting temperature potentially damage some vitamins and nutrients and reduces the availability
Steffen Hansen If the purpose of the additive is to control Salmonella in the feed, then butyric acid is actually a poor choice, especially protected butyric. Protected butyric acid cannot interact with Salmonella in feed, only within the gut (wherever the protection is designed to release the acid). And, the butyric acid effect in the hind gut is more about feeding the enterocytes to improve tight junction function, than direct action against the Salmonella.
A better option for feed decontamination would be unprotected acids in general, and formic acid in particular. Unprotected acids can work to decontaminate the feed *before* the birds consume it, and you get more active ingredient per kg inclusion from lower molecular weight organic acids (formic is half the MW of butyric, thus providing roughly 2x the acidification potential).
The use of phytochemicals is an effective option in the context of avian pathology. But it is not the reason of this forum. So, focusing on the subject, it is propitious to mention that:
Because of its strong and pungent odor, butyric acid is commonly used in its Butyrate form (as a calcium or sodium salt). Recurrent studies have concluded that after supplementation with Butyrate, there has been an increase in the height of the villi and the depth of the crypts in pigs and birds (Galfi and Bokori, 1990, Leeson et al., 2005). The growth in the height of the villi favors the absorption surface of the small intestine and improves the perfomance in the utilization of nutrients, for which recent work has shown that when the Butyrate is orally ingested it can have beneficial effects on the productive parameters in monogastrics (Bergman, 1990; Smulikowska et al., 2006; Biagi et al., 2007; Hu and Guo, 2007; Mazzoni et al., 2008; Czerwinski et al., 2012).
Greetings from Peru.
Atef Abou Zead I would expect them to be less effective than the same molar concentration of the pure propionic acid. Acid salts are convenient, but you sacrifice feed hygiene efficacy for that convenience. I discussed this in greater length in an eFeedLink article published last year.
http://forum.efeedlink.com/contents/10-05-2017/3a68e442-fbf1-428c-b515-7a77093da9e0-c581.html
Interesting article (as mentioned by Steffen) and interesting discussion; reaching even the sanitation of feeds. Just a few words on the side topic. I fully agree with Luis and Gleen- the influence of butyrates on gut health and its positive influence on production results in broilers. Many organic acids, etheric oils and other eubiotics (used separate or as a mixture) have positive influence on Salmonella and/or other pathogenic microbes in feed and the gut. But we know also that none is enough effective to eliminate it. Similar problem we have with Clostridium or E.coli (eg. benzoic acid is very effective). As all above opinions, we agree that only combination of physical factors (pelleting/expanding), disinfection, organic acids, phytobiotics, etc., could solve/ minimize the problem.
Coming back to the main topic- there is evidence that poor quality pellets (too soft, much fines, small particle size <0,8mm) are worse than good mash feed (bigger particles 0,8-2,5 mm, not much fines).
Standardised Ileal Amino Acid Digestibility of Ingredients for Broiler Chickens is Influenced by Feed Form
Dear All,
Very Good discussion on the topic. The acidifier combination with the essential oils is the best solution. I have found the results are better when the combination of these two materials done practically. For seven years, I have used a combination of these two in poultry nutrition and got very good results in my consultancy farms. If we correlate with our Indian recipes in our diet (Human Daily food) we are using lots of essential oils through turmeric, chilly, ginger, garlic and so many other spices in different recipes.
When we eat, we add citric acid (lemon juice) Tannic acid (tamarind) on top or in the recipe. That means we, also from ancient time, have been eating a right combination of acid and essential oil to control the pathogens in our food chain. So practically, if we do it in poultry nutrition, it will act as a very good antimicrobial and digestive stimulator. Expert comments are welcome for continuing the discussion.
I do agree with the comments made by Dr Atul Deshmukh on inclusion of combination of conventional sources of organic acids in poultry diets.
There are some Indian organisations, their core capability is sourcing herbal sources of organic acids and essential oils.
Dr.Channegowda
Consultant Veterinary Nutritionist
Mysore, India
I have evaluated a lot of essential oil products in my research lab with little effectiveness in a well balanced corn-soy diet. That said, a good quality pellet certainly aids in improved FCR and especially in hot weather conditions.
Park W. Waldroup
thank you for the comment. I had written to you earlier on my plan to do collaborative work with you, particularly on vitamins nutrition. Then, I was a senior lecturer. Now, I'm a professor and the current dean of the postgraduate school. I just wonder if we can still collaborate. Stay blessed.
The blend of herbal products has two main results: improvement in gut health by synergism effects but slightly lowered growth due to the reduction of feed consumption, which broiler producers do not desire.
I consider it opportune to specify that the benefactor effect in the modulation of the intestinal microbiota, it is through its antimicrobial activity or through the same stimulation of eubiosis (balance of beneficial microflora). This will be repeated, apart from its other properties (eg control of avian coccidia, innunoimulation, etc); in an encouraging performance in the productive parameters: greater weight increase / day, lower feed intake, improved feed conversion and higher final weight at the time of the benefit. It is not in vain that phytobiotics are classified as modern growth promoters, as alternatives to antibiotics used as a premix, and that since 2006 the EU has banned their use.
Greetings from Peru.
Magicoh® Pellet Binder
tartarini cesare
Actually is not registered anymore in EU
https://www.feednavigator.com/Article/2017/12/20/EU-committee-votes-against-the-use-of-formaldehyde-as-feed-additive
