摘要
The aim of this experiment was to study the effects of dietary supplementation of mannan oligosaccharides （MOS）, extracted from yeast Saccharomyces cerevisiae and acidifier calcium formate （CF） on some performance parameters and egg quality characteristics of Japanese quail （Coturnixjaponica）. During the experimental period, which lasted 90 days, one hundred eighty three, 42-day-old quail, were distributed into 4 groups of 3 replications each and were placed in separate wire suspended cages. The birds of control group received a commercial feed, while the birds of the other 3 groups received the same feed, to which either 6 g CF kg^-1 or 1 g MOS kg^-1 or both 6 g CF kg^-1 plus 1 g MOS kg^-1 were added. The live weight, feed consumption, feed conversion ratio and mortality of birds were not significantly affected. The addition of MOS in the feed significantly （P 〈 0.05） increased palmitic acid percentage of egg yolk. Also, the addition of CF significantly （P 〈 0.05） decreased egg shape index and palmitic acid percentage of egg yolk. Furthermore, significant （P 〈 0.05） interaction between MOS and CF was observed on palmitic acid percentage, egg shape index and egg shell thickness. No significant effect was observed for egg： weight, specific weight, parts percentage （yolk, albumen, shell）, shell deformation, yolk diameter and yolk colour （L＊a＊b＊ colour space）.
