Evaluation of Herbal Methionine Source in Broiler Diets
Abstract:
A study was conducted to evaluate an herbal methionine replacement
product in diets for young broiler chicks. A corn-soybean meal diet that was
complete in all respects but methionine was prepared and divided into three
aliquots. One was supplemented with 0.30% DL methionine and another was supplemented
with the herbal methionine replacement product. Each of these was then blended
with the unsupplemented basal diet to provide diets with 0, 0.05, 0.10, 0.15,
0.20, 0.25 and 0.30% of either DL methionine or the herbal methionine replacement
product. Each diet was fed to twelve pens of five male broiler type chicks each
in electrically heated battery brooders. The diets and tap water were provided
for ad libitum feeding from day of hatch to 18 d of age. Analysis of
the diets indicated that the methionine activity of the diets with DL methionine
was close to expected values but no apparent increase in analyzed methionine
activity in diets supplemented with the herbal methionine replacement product.
Body weight gain and feed conversion of birds fed the diets with DL methionine
were significantly superior to that of birds fed the diets with the herbal methionine
replacement product. No significant differences were observed between birds
fed the two products for weight of digestive or immune organs when expressed
as a percentage of body weight. These data suggest that the herbal methionine
replacement product is not suitable for use as a methionine source in diets
for young broiler chicks.
How to cite this article
J. Yuan, A.J. Karimi, S.D. Goodgame, C. Lu, F.J. Mussini and P.W. Waldroup, 2012. Evaluation of Herbal Methionine Source in Broiler Diets. International Journal of Poultry Science, 11: 247-250.
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