抄録
In the previous paper it was reported that the contents of iron and a kind of carotenoid-vio-laxanthin, were low in the eggs sampled from poor hatching broods.
The present work was carried out to see if a similar relation held also for the samples of another source. The samples were supplied from the Fuji Trout Hatchery together with the data. of thier hatching rates (Table 1). A part of the eggs of each sample was analyzed of thier chemical composition immediately after fertilization, while the remainders were reared at the Hatchery to observe the developing process.
Also for the present samples, the content of iron was found to be proportional to the hatching rates (Table 2). There is a tendency that vitamin B2 content in the eggs of high hatching, rate is slightly larger than those of low hatching rate (Table 4.).
It should be noted that the yellow pigment in the present samples seems to be different from the one previously reported (violaxanthin), and that the amount of the pigment in the eggs is likely independent of the hatching rate (Tables 3, 4).
