OPTIMIERUNG DES AMINOSÄUREZUSATZES ZU SCP (METHYLOMONAS CLARA) FÜR DIE AUFZUCHT JAPANISCHER WACHTELN (COT.COT.JAPONICA)

Abstract

Optimizing the amino acid supplementation of SCP (methylomonas clara) in raising Japanese baby quail (cot.cot.japonica) | Several experiments with a bacterial Single Cell Protein (methylomonas clara) as the sole source of protein were conducted on day old Japanese quail using semipurified diets (corn starch, soy oil, minerals, vitamins). A mixture of soy flour and isolated soy protein (Purina RP 100) supplemented with dl-methionine and glycine served as control protein. All diets were calculated isocalorically and were fed as pellets. The trials were finished after 16 - 18 days. In experiments with 25% SCP methionine could be identified as the first limiting amino acid in SCP and arginine as the second one. Best results were obtained with a total of 4.9 sulphur amino acids and 6.1 arginine calculated as percentage of SCP amino acid protein. With 25-303 dietary SCP supplemented with methionine and arginine at the above level, growth was only slightly (2-5%) below the control level. However 50% dietary SCP resulted in growth rates of only 85 - 88% of the soy control. Inconsistent results were obtained by addition of glutamic acid to SCP diets.