Dissertation > Excellent graduate degree dissertation topics show

The Research of the Scylla serrata Inshore Cage Culture Technology

Author: ChenLiZhi
Tutor: XuYongJian
School: Ningbo University
Course: Agricultural Extension
Keywords: Scylla serrata inshore cage captivity growth performance survival rate carapace width carapace length
CLC: S968.251
Type: Master's thesis
Year: 2013
Downloads: 1
Quote: 0
Read: Download Dissertation

Abstract


Salinity to20-24, pH7.3-8.2, water depth10m-20m of the sea area of SanmenShepan, use fishing rafts hanging crab cage to30g Scylla serrata initial specificationsfor aquaculture. Also set pond impoundments breeding control test. Test time from July5,2010to November5,total of5months. Daily record of farming systems, watertemperature, salinity, pH and mortality, molting of captive and pond mud crab; Scyllaserrata need to various growth performance of periodic sampling measurement, such ascarapace width, carapace length, weight, the stomach feeding conditions, vitality andhealth status.The results showed that, impoundments breeding in the individual growth rateslightly higher than the shallow sea captive breeding Scylla. The end of the trial theaverage mass of captive Scylla serrata is275g,individual growth rate of392.9%,molting rate of88%, survival rate of98%; The end of the test impoundment polycultureScylla serrata average mass is300g, individual growth rate of428.6%, molting rate of57%, the survival rate is52%. Inshore cage captivity female Scylla serrata and maleScylla serrata measurement data respectively, it found that the survival rate of femaleScylla serrata to be higher than the male Scylla serrata about5%, and the female Scyllaserrata have a significant differences with male Scylla serrata in the productionperformance, the females Scylla serrata are larger than the male Scylla serrata ingeneral merchandise specifications. The node data fitting of each time with carapacewidth and carapace length of the female Scylla serrata and male Scylla serratarespectively,it show a linear relationship between the carapace width and carapacelength. The relationship between female Scylla serrata carapace length and carapacewidth: y=2.0371x-1.3520，R~2=0.8573;The relationship between male Scylla serratacarapace length and carapace width: y=1.7371x-0.9520，R~2=0.9201.Hanging depth of Scylla serrata production performance comparison results showthat the crab cage hanging depth increases, the average weight of Scylla serrata alsoincreases; hanging deeper depth, the faster growth in carapace width and carapace length. With the increase in the growth phase, the average growth rate for each group ofscyllo increases gradually. In September, the rate of growth index increase with eachgroup reach maximum. Different initial specifications of captivity Scylla serratacomparison shows that the average weight of the initial specifications crab exhibit thesame trend, the growth rate of the average weight in each period is closer, one of theinitial specifications about75g for better vitality in each period, the highest growth rateof weight; process of cultivation, it gradually narrow the gap between the crab carapacewidth and carapace length of each specifications Scylla serrata, among them initialspecifications for30g,50g and75g of the crab carapace width and carapace length havea fastest growing.

Related Dissertations

  1. Effect of High Level of Copper and Zinc on Growth Performance and Metabolism and Its Content Level in Serum and Deposit in Tissues of Weanling Piglet,S828.5
  2. Effects of Low-protein Diet on Production Performance and Feeding Environment of Piglet,S828.5
  3. Effects of Temperature, Salinity, Dissolved Oxygen, Ammonia-N and Nitrite-Non the Molting of Scylla Paramamosain,S917.4
  4. Study on the Trophic Value of Blood Meal by Different Processes and the Effects of Supplements in Broiler Chicken,S831.5
  5. The Effect of Vitamin E and Vitamin C on Growth Performance, Non-specific Immune Response for Cobia, Rachycentron Canadum,S963.1
  6. Effects of Dietary Oil Sources on Growth Perfomance, Lipid Deposition and Blood Biochemical Index of Carassius Auratus Gibelio,S963.1
  7. Nutritional Evaluation and Feed Effects of Solidago Canadensis in Rex Rabbits,S829.1
  8. Studies on Fermentation of Unconventional Protein Feeds and Their Application in Broiler Diets,S831.5
  9. Effects of the Cyclic Starvation-Refeeding on Growth Performance, Body Composition, Digestive Enzymes and Antioxidant Enzymes of Megalobrama Amblycephala Yih and Cyprinus Carpio Var.Jian,S917.4
  10. Effects of Scutellaria Baicalensis and Lactic Acid Bacteria on Growth Performance and Microflora in Ileum and Caecum of Broilers,S831.5
  11. Effects of Optimized Main Environmental Factors at Broilers Raising and Scutellaria Baicalensis on Production Performance of Three Yellow Broilees,S831.5
  12. The Meaning of Blood Lactic Acid Dynamic Monitoring and Continuous Hemodynamic Monitoring of Severe Case Trauma Patients,R641
  13. Ammonia-N Stress on Misgurnus Anguillicaudatus and Second Generation Population of Mass Selection,S966.4
  14. A Study of Chinese Environmental Control System and Performance,X321
  15. Development and Application of Residual Cordyceps Militaris Culture Medium as Feed Additive of the Chinese Mitten Crab (Eriocheir Sinensis),S966.16
  16. Application Effect of Complex Enzyme in the Miscellaneous Meal Diet on Yellow Broiler Chickens,S831.5
  17. Effection Growth Performance and Carcass Quality of Betaine Instead of Methionine in Low Crude Protein Diets on Growting-Finishing Pigs,S828.5
  18. Clinicopathological Characteristics and Prognostic Factors in Patients with Colorectal Cancer,R735.3
  19. The Impact of Responsible Leadership on Business Growth Performance,F272.91
  20. Advanced gastric cancer preoperative interventional chemotherapy clinical observation,R735.2
  21. Effects of Dietary Fructooligosaccharides on Growth Performance, Serum Biochemical Indexes and Intestinal Microflora of (Oreochromis Niloticus×O.Aureus),S963

CLC: > Agricultural Sciences > Aquaculture, fisheries > Aquaculture technology > A variety of seafood, animal and plant breeding > Crustacean culture > Crab farming > Scylla
© 2012 www.DissertationTopic.Net  Mobile