Betaine hydrochloride (HCl) was fed in diets which were reduced in methionine, choline and energy (oil) in three replicated broiler trials. The PC (Positive Control) was a high specification corn- soybean meal diet. Levels of standardised ileal digestible (SID) lysine and methionine+cysteine were 1.20 and 0.84% in the starter (1-18 days) and 1.10 and 0.803% respectively in the grower (17-38 days)...
Interesting paper Mr.Creswell but a few comments: i) out of three trials, in only one of them the NC gave significant lower yield, ii) I am surprised to see the huge differences in yield resulst comparing trial 1 and 2 using same bird, iii) Nothing is mentioned about thermal conditions, could it be there was excess heat during trials?, that could also explain improved results with higher level of betaine especially in trial 3?, iv) not clear to me looking at your summary which were the levels of HCl betaine tested.
Many thanks and regards from Madrid, Rafa.
Do agree. the product do possess the merit. It is around in practice in Pakistan at farm level bu still not accepted by feed millers. I donot know why?