|
In the tropics, where berried females are readily available, special broodstock holding facilities within hatcheries are not necessary, although the advantages of maintaining special broodstock ponds have already been mentioned. However, in temperate zones where freshwater prawns are reared in the summer, indoor broodstock facilities are essential. In temperate zones it is necessary . . . → Read More: Holding Your Broodstock Of Prawns In Temperate Zones There must be enough soil available for pond construction, whether the ponds are to be excavated or pond banks are to be erected above ground. Unless good information about the soil characteristics is already available, site assessments should include taking a suitable number of soil cores up to 1 m deeper than the . . . → Read More: Soil Characteristics Used In Prawn Culture Ponds Freshwater is normally used for rearing freshwater prawns from postlarvae to market size. Prawns will tolerate partially saline water (reports indicate that they have been experimentally cultured at up to 10 ppt; however, they do not grow so well at this salinity). You could rear Macrobrachium rosenbergii in water which may be too saline . . . → Read More: Water Quality And Supply For Prawn Culture The success of any nursery facility or grow-out farm depends on its access to good markets for its output. Its products may be sold to other farms (in the case of nurseries), directly to the public, to local markets and catering facilities, or to processors or exporters. The needs and potential of each . . . → Read More: Outdoor Nurseries And Grow-Out Facilities For Prawn Culture All freshwater prawns (like other crustaceans) have to regularly cast their ‘exoskeleton’ or shell in order to grow. This process is referred to as moulting and is accompanied by a sudden increase in size and weight. There are four distinct phases in the life cycle of the freshwater prawn, namely eggs, larvae, postlarvae . . . → Read More: Life History Of All Freshwater Prawns The following information deals with the general external anatomy of the freshwater prawn M. rosenbergii, and provides some notes on the function of various major parts of the body. Internal morphology (circulatory, respiratory, digestive, excretory, reproductive and nervous systems) is not covered in this manual, which concentrates on farming, but further information is . . . → Read More: External Morphology And Other Characteristics Of Freshwater Prawns |
|
|
Home | About Us | | Directory | Links | Awards | Advertise With Us | Terms and Conditions | Contact Us Log in Copyright © 2013 Informed Farmers - All Rights Reserved. Web site by Dynamic Web Solutions. |
|
