Its a brief period, your birds should be ok regardless - but if you offer them those ingredients seperately , they should do a reasonable job of self regulating intake. Sorghum isn't a particularly good ingredient by raw numbers, but it seems to outperform the sum of its parts (slightly). Compared to corn, it has a little more protein, similar fiber, a little less fat, a bit less lysine, and a good bit more tryp, while providing similar useable energy (on average). Speculation is it has to do with some enzymes, but I wouldn't swear to that explanation.
Your soy meal and fish meal will both provide much more crude protein, and more than make up for the deficiencies in the proteins of either the corn or the sorghum (or both). The fish meal, however, you likely want to sprinkle over the other ingredients because it is so concentrated as a nutritional source. You offer oyster shell for calcium?
