Hepatopancreas and Gonad Quality of Chinese Mitten Crabs Fattened with Natural and Formulated Diets

2013 ◽  
Vol 36 (3) ◽  
pp. 217-227 ◽  
Author(s):  
Luchang Shao ◽  
Chun Wang ◽  
Jie He ◽  
Xugan Wu ◽  
Yongxu Cheng
Keyword(s):  
Formulated Diets ◽  
Mitten Crabs ◽  
Gonad Quality

Meat Quality of Chinese Mitten Crabs Fattened with Natural and Formulated Diets

2013 ◽  
Vol 23 (1) ◽  
pp. 59-72 ◽  
Author(s):  
Luchang Shao ◽  
Chun Wang ◽  
Jie He ◽  
Xugan Wu ◽  
Yongxu Cheng
Keyword(s):  
Meat Quality ◽  
Formulated Diets ◽  
Mitten Crabs

Patterns and Rates of Ammonia Excretion by Juvenile American Lobsters, Homarus americanus, Fed Casein- and Crab Protein-Based Diets

1986 ◽  
Vol 43 (6) ◽  
pp. 1290-1294 ◽  
Author(s):  
C. M. Hawkins ◽  
J. D. Castell ◽  
V. Leroyer
Keyword(s):  
Dietary Protein ◽  
Nutritional Quality ◽  
Ammonia Excretion ◽  
Homarus Americanus ◽  
Protein Formulation ◽  
Metabolic Status ◽  
Dietary Proteins ◽  
Formulated Diets ◽  
Excretion Rates

The rate of excretion of nitrogenous wastes is not only a function of an animal's metabolic status but is also a function of the nutritional quality and quantity of dietary protein. Hourly rates of ammonia excretion by Stage V and Stage VI juvenile lobsters, Homarus americanus, fed purified diets formulated with casein or a purified crab protein, were measured over 24 h postfeeding to evaluate differences in use efficiencies of these two dietary proteins. Hourly ammonia excretion rates by Stages V and VI lobsters fed the casein-based formulated diets were significantly higher than those of animals fed the crab protein formulation. In addition to differences in ammonia excretion rates observed between animals fed the two diets, regular but different recurring patterns in hourly excretion rates were found between Stages V and VI lobsters fed each diet. Our findings illustrate that although the percentage of protein in the food of juvenile lobsters may be similar, the use of the nitrogen component is significantly different. We conclude that the quality of the protein in a diet may be as important (if not more important) as its quantity.

scholarly journals The effect of fresh seaweed and a formulated diet supplemented with seaweed on the growth and gonad quality of the collector sea urchin, Tripneustes gratilla , under farm conditions

2020 ◽  
Vol 51 (10) ◽  
pp. 4087-4102
Author(s):  
Abigail J. Onomu ◽  
Niall G. Vine ◽  
Mark D. Cyrus ◽  
Brett M. Macey ◽  
John J. Bolton
Keyword(s):  
Sea Urchin ◽  
Formulated Diet ◽  
Tripneustes Gratilla ◽  
Gonad Quality

Effects of three feeding models on growth,gonad yield and gonad quality of the sea urchin(Strongylocentrotus intermedius)

2013 ◽  
Vol 37 (7) ◽  
pp. 1050 ◽  
Author(s):  
Haisen ZHOU ◽  
Yaqing CHANG ◽  
Shibin LUO ◽  
Xiaofei TIAN ◽  
Weijie ZHANG ◽  
...  
Keyword(s):  
Sea Urchin ◽  
Strongylocentrotus Intermedius ◽  
Gonad Quality

scholarly journals APPARENT DIGESTIBILITY OF SELECTED FEED INGREDIENTS IN DIETS FOR MUD CRAB (Scylla paramamosain)

2007 ◽  
Vol 2 (1) ◽  
pp. 1
Author(s):  
Ketut Suwirya ◽  
Nyoman Adiasmara Giri ◽  
Muhammad Marzuqi ◽  
Sophia Lasma Sagala
Keyword(s):  
Fish Meal ◽  
Protein Digestibility ◽  
Scylla Paramamosain ◽  
Mud Crab ◽  
Feed Ingredients ◽  
Formulated Diets ◽  
Trash Fish ◽  
Corn Gluten ◽  
Bean Meal

Cultured mud crabs (Scylla spp.) are commonly fed with ‘trash’ fish. Insufficient supply, high cost and variable quality of ‘trash’ fish has lead to a need to develop costeffective and environmentally friendly formulated diets. This study was conducted to determine quality of selected feed ingredients as protein sources in mud crab diets based on their nutrient composition and digestibility coefficients for dry matter (ADMD), crude protein, lipid and energy. The digestibility coefficients for ADMD ranged from 82.46% to 89.20%. Animal-based feedstuffs such as shrimp head, tiny shrimp and squid liver meal had higher ADMD values than fish meal. Of the plant-based feedstuffs, soy bean meal had the highest ADMD values (89.20%) and corn gluten had the lowest (82.46%). Corn gluten had the lowest protein digestibility (78.81%) and soy bean meal had the highest (96.05%). The lowest energy digestibility (71.13%) was obtained in corn gluten meal. Soy bean meal had a higher energy digestibility value (98.48%) than fish meal (85.95%). All animal meal sources had similar energy digestibility values (85.86%—92.09%).

Feeding history affects the crabseed quality and subsequent culture performance of juvenile Chinese mitten crab Eriocheir sinensis H. Milne Edwards, 1853 (Brachyura, Varunidae)

Crustaceana ◽  
2021 ◽  
Vol 94 (1) ◽  
pp. 97-114
Author(s):  
Xiaodong Jiang ◽  
Yuhong Yang ◽  
Yongxu Cheng ◽  
Xugan Wu
Keyword(s):  
Pathogen Resistance ◽  
Eriocheir Sinensis ◽  
Chinese Mitten Crab ◽  
Feeding Trial ◽  
Formulated Diets ◽  
Mitten Crab ◽  
Trash Fish ◽  
Significant Difference ◽  
Traditional Diets

Abstract A 6-month feeding trial was conducted to evaluate the hepatopancreas colour, proximate composition, antioxidant capacity, pathogen resistance and growth performance of juvenile Chinese mitten crab Eriocheir sinensis H. Milne Edwards, 1853 fed either formulated diets (FD), traditional diets (TD) or a mixture feeding of traditional diets and frozen trash fish (TF). The results showed that: (1) The hepatopancreas redness (a*) in the FD treatment was significantly higher than that in the other two treatments (). (2) The significantly higher activities of alkaline phosphatase (AKP), acid phosphatase (ACP) and superoxide dismutase (SOD) were observed in the hepatopancreas in the FD treatment, while a significantly higher content of malondialdehyde (MDA) was observed in the haemolymph in the TF treatment (). (3) FD and TD treatment, respectively, had the lowest and the highest mortality after challenging with Aeromonas hydrophila. (4) Females in the FD treatment had a significantly shorter intermoult period in the indoor culture experiment (), no significant difference was observed in weight gain rate, specific growth rate, or survival. In conclusion, formulated diets could enhance the crabseed quality of E. sinensis compared to traditional diets or trash fish.

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