ABSTRACT


Irma Pennachiotti M., Marta Vargas U., Aurora Matus de la P., Carmen Visconti P. y Hans Fuchtner1
 
Alfalfa and alfalfa hay were tested for their content of three vitamins; nicotinic, panthotenic and folic acids, by means of a microbiological method. The microorganisms used were Lactobacillus arabinosus 17-5 for the nicotinic and panthotenic acids, and Streptococus faecalis R 8043 for folic acid. In the cases of nicotinic and panthotenic acids the pH meter was used instead of titrating with NaOH; the turbidimetric method was used for testint folic acid. The figures obtained were:nicotinic acid panthotenic acid folic acid Alfalfa (dry matter): 38.9 mg/1000 24.7 mg/1000 2.9 mg/1000 Alfalfa hay (dry matter): 32.38 mg/1000 20.50 mg/1000 2.76 mg/1000 These figures were compared with those given by Morrison.
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1Sección Química y Forrajes. Instituto de Investigaciones Veterinarias