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Chick-News.com Poultry Industry News, Comments and more by Simon M. Shane

Deleterious Effect of Beta-Conglycinin for Broiler Chicks

01/19/2023

A study presented at the 2023 International Poultry Scientific Forum demonstrated the deleterious effect of beta-conglycinin, an allergenic protein inherent to soybeans and present in soybean meal. Experimental diets comprised a non-supplemented control, and two increments of beta-conglycinin at 25,000 ppm and 50,000 ppm.  Chicks were housed in battery cages from day old to 14 days for the experimental period followed by a pelleted diet fed from 14 to 21 days.  Addition of the beta-conglycinin to feed significantly reduced intake and growth rate in mash feeds.  There were no treatment effects on differential blood cell counts, serum vitamin E levels or mucosal superoxide dismutase activity.

 

Since the compound is heat labile, the trial included both mash and pelleted feed.  Experimental diets containing beta-conglycinin were heat treated to 38C for 10 seconds and passed through a 3mm die.  Although pelleting using these parameters was effective in degrading beta-conglycinin, under commercial conditions, optimal pelleting conditions are infrequently achieved. 

 

The trial was sponsored by and included participation by scientists affiliated with Hamlet Protein. The product comprises soybean meal treated by heat and enzymes to produce an ingredient free of anti-nutritional components. When Hamlet Protein is substituted for conventional soybean meal growth rate and feed conversion efficiency are enhanced, providing a beneficial return on the incremental cost of including the product in diets.  Controlled experiments and field trials have demonstrated the benefits of early feeding of Hamlet Protein to chicks and poults since a range of anti-nutritional factors impair optimal performance in avian neonates.


 
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