Domesticated Trout - How to Breed and Grow Them

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Read Books, 2008 - Nature - 364 pages
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Domesticated Trout - How To Breed And Grow Them. CONTENTS: PART I. TROUT-BREEDING WORKS. CHAPTER I. INTRODUCTION: Trout can be raised successfully. Qualities required for the Best Success. The Principle of Security, em- phasized because, I. It will insure Success 2. Losses occur on so large a Scale 3. Sources of Danger un- seen. Suitable Water, Importance of. Precautions i. Beware ofInsufficient Water 2. OfFreshets 3. Of Water that heats in Summer 4. OfWater intrinsically Page Unfavorable to Trout. Spring and Brook Water compared 3-17 CHAPTER II. PONDS. A Beginners Inquiries. Directions about the Construc- tion of Ponds I. Exercise Forethought in locating Ponds 2. Excavate the Ponds rather than dam up the Stream 3. Build compactly 4. Build small Ponds for Business 5. Have a Fall at the Head of each Pond 6. Do not build Ponds too near the Spring 7. Build Keepers House very near the Ponds 8. Make Ponds very Secure 9. Shape of the Ponds 10. Be able to draw off the Water n. Beware of Hiding-Places 12. Number of Ponds 13. Protections for Ponds 14. Spawning Beds. Ainsworths Spawning Races. Collinss Roller Spawning Box 15. Inlets and Out- lets 16 Screens 18-39. CHAPTER III. BUILDINGS. Buildings required. Meat Room. Store-Roomand Car- penters Shop. Office. Ice-House. Other Struc- tures. Hatching House. Size of Hatching House Location Shape No Fire required Skylights Wa- terproof Partitions 40-46. CHAPTER IV. HATCHING APPARATUS. Enumeration of Hatching Apparatus i. Supply Reser- voir 2. Hatching-Room Aqueduct, Effect of Air on Temperature of Water 3. Filtering Arrangements Nature of Sediment, Filtering Tanks and Screens, Flannel for Filters, Cleaning the Filters 4. The Dis- tributing Spout, Temporary Aqueduct, Gravel Filter 5. Hatching Compartments or Hatching Apparatus proper, Responsibility of. Materials. Glass Grilles vs. Charcoal Troughs. Expense of Carbonized Wood compared with Glass Grilles. Discovery ofCarbonized Wood for Hatching. Wood lined with Glass inade- quate. Placing the Hatching Troughs Dimensions Compartments Elevation Inclination. Screens. Trap-Box. Laying the Gravel Size ofGravel Preparation of Depth. The Covers. Most Embryos develop in the Dark. Covers a Protection from Enemies. Glass Grilles 47-67. CHAPTER V. THE NURSERY. Introduction. The Water. Methods of Rearing. Ponds vs. Rearing-Boxes. Rearing-Boxes Essential Points of I. A Fall of Water 2. A Current 3. Pro- tection against Suction 4. Security from Overflow 5. Absence of fixed Hiding-Places 6. Compactness 7. Protection against Outside Enemies 8. Perfectly Tight Joints 9. Protection against Fungus. Maximum and Minimum Supply of Water. Arrangement of Rearing-Boxes. Directions for Ponds . .68-78 PART II. PROCESSES IN TROUT BREEDING. CHAPTER I. TAKING THE EGGS. Introduction. Preparations for the Spawning Season. The Spawning Season. Appearance oftheTwo Sexes. The First Fish up. Method of Capturing. Hold- ing the Fish. The Writers Method. Directions about Handling. Russian Method. Russian vs. American Theory. How to tell Ripe Fish. How to get a Good Impregnation. Whether to take Milt or Eggs first. Process of Impregnation...

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