. Domesticated trout [microform] : how to breed and grow them. Fish culture; Trout; Pisciculture; Truite. TAKING THE EGGS. 103 spawning makes matters still worse. During the latter part of the season, the water for thi spawning pans should be taken from the spring, and, if necessary, kept at the spring temperature by artificial heat. 3. Make quick work in imprcgjiating the eggs. Have everything ready beforehand, so as not to lose a mo- ment's time after the fish are in the tub. Do not be ovei two minutes with any one pan, and take but one layer of eggs to a pan. By these precautions you will s
. Domesticated trout [microform] : how to breed and grow them. Fish culture; Trout; Pisciculture; Truite. TAKING THE EGGS. 103 spawning makes matters still worse. During the latter part of the season, the water for thi spawning pans should be taken from the spring, and, if necessary, kept at the spring temperature by artificial heat. 3. Make quick work in imprcgjiating the eggs. Have everything ready beforehand, so as not to lose a mo- ment's time after the fish are in the tub. Do not be ovei two minutes with any one pan, and take but one layer of eggs to a pan. By these precautions you will secure absorbing eggs and active zoosperms and a good intermingling of both, even at the minimum estimate of the period of their effectiveness. You will also thus avoid the reabsorption of milt by the males, which will sometimes happen when they are disturbed.* 4. Stir the water well in the pans when first poured in, but not afterwards. This precaution is, of course, to effect a thorough distribution of the spermatozoa through the water, to act upon the eggs. After the eggs begin to adhere, leave them perfectly quiet till they separate spontaneously. I have heard it said that the water should be stirred during the whole time of the adhering of the eggs, but this is a mistake. 5. Allow the eggs ample time to separate. It will do no harm if you leave the eggs an hour in the pan with the milt, but it will do harm to move them too soon. Some authorities that thirty minutes is long * Males having good and ready-flowing milt sometimes, when frightened, seem to reabsorb it into the glands, so that it cannot be pressed out naturally. By immersing the fish in warm water, however, say at 70° Fahrenheit, the glands will be relaxed so that the milt will flow copiously Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the origina
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Keywords: ., bookcentury1800, bookdecade1870, bookpublisherbosto, bookyear1872
