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crawfish manual
Crawfish Production Manual
Commercial sales of crawfish in Louisiana date back to the late 1800s, and today's crawfish industry includes millions of pounds harvested from farms and natural habitats in the state. This publication covers a wide range of topics on crawfish production, including crawfish biology, pond design, forage management, stocking, water quality, harvesting, marketing and much more. (PDF Format Only)
Should I Lime My Crawfish Ponds?
Crawfish research and extension specialists in the LSU AgCenter often receive inquiries from producers regarding the need or benefit of liming ponds or fields used for crawfish production. The following article discusses calcium and water hardness requirements for crawfish, benefits and limitations of liming, and where to get your water and soil tested to determine if lime is required for your crawfish pond(s).
Square mesh traps
Improved Crawfish Trap Design Might Mean Fewer Traps Needed
Over the last several years, crawfish farmers have been switching to a slightly different crawfish trap – one constructed of ¾-inch square mesh wire in lieu of those made from ¾-inch hexagonal (6-sided) mesh. The square mesh traps are more durable and produce larger catches.
Stocking Crawfish
This document is Chapter 6 in the Louisiana Crawfish Production Manual. The chapter discusses factors to consider when stocking crawfish including species and size of crawfish, suggested months of stocking, handling crawfish broodstock, stocking rates, sex ratio and condition of broostock, and post-stocking recommendations.
This document is Chapter 2 in the Louisiana Crawfish Production Manual.
Crawfish Biology
This document is Chapter 2 in the Louisiana Crawfish Production Manual. The chapter covers basic biology and life cycles of red swamp crawfish and white river crawfish, burrow ecology, population dynamics and population structure, molting, and nutrition and feeding habits of crawfish.
Blue/Red/White Crawfish
Color Variations in the Red Swamp Crawfish
Captured "red swamp crawfish" vary widely in color because of their diet and environmental conditions, but the most exotic colors occur because of mutations in the genes that are responsible for pigment formation.
Crawfish News November/December 2012
Crawfish News November/December 2012
This newsletter discusses proper procedures for monitoring your crawfish population with a dip net, projecting crawfish growth to harvest size based on emergence of young juveniles from burrows, recommendations on trap density and spacing for low-density and high-density populations, considerations to consider in early trapping and the importance of keeping good production records.
Females with young
Effects of Food Limitations On Crawfish Reproduction
Limited food resources near the end of the crawfish production season resulted in lower reproduction. Moreover, short-term feeding with high protein/high energy feeds in forage depleted ponds before crawfish burrowing seemed to mitigate the food shortages and even increased the spawning rate over those crawfish from ponds rich in forage.
Brown Blood And Nitrites
Heavy rainfall and winter feeding tend to add up to conditions that can lead to brown blood disease in the spring. Brown blood is caused by the buildup of nitrates in ponds, which produces a result similar to carbon monoxide poisoning.
Brown Blood Nitrates
Heavy rainfall and winter feeding tend to add up to conditions that can lead to brown blood disease in the spring. Brown blood is caused by the buildup of nitrates in ponds, which produces a result similar to carbon monoxide poisoning.
Crawfish Newsletter November 2010 (Vol 3, No 7)
Crawfish News November 2010 (Vol 3, No 7)
This newsletter addresses the November 10 crawfish referendum to renew the assessment on crawfish artificial bait and sacks (bags), trap spacing guidelines, dip net sampling of juvenile crawfish for population assessment, the importance of secondary juvenile crawfish recruitment to overall crawfish yield, and a frequently asked question on the relationship between trap mesh and size of crawfish harvested.
Procambarid crawfish: Life History and Biology
Procambarid Crawfish: Life History and Biology
This article discusses the life history and biology of the Procambarid crawfishes, the red swamp crawfish and white river crawfish.
Crawfish News, September 2008 (Vol 1, No 5)
September 08 Crawfish News. This newsletter addresses fall flooding considerations, storm water management, pumping efficiency and energy cost, and relationship of temperature and crawfish growth.
Crawifsh News July 2012
Crawfish News July 2012 (Vol 5, No 4)
This newsletter discusses determining a cash land rent for farm-raised crawfish production and controlling army worms in late planted crawfish forage crops.
Crawfish News September/October 2012
Crawfish News September/October 2012 (Vol 5, No 5)
This newsletter discusses the management of water for fall flood-up, managing excess water from Hurricane Isaac, and understanding oxygen consumption in crawfish ponds.
Production of Food Fish
Red Drum: Production of Food Fish
There are two methods used in the production of food-sized red drum. The more conventional method is semi-intensive culture in ponds. The other method, intensive indoor raceway culture, is unproven from an economic standpoint. This publication focuses on pond production.
Crawfish Production: Pond Construction and Water Requirements
Crawfish Production: Pond Construction and Water Requirements
This Southern Regional Aquaculture Center fact sheet discusses pond design, layout and construction for crawfish monocropping and rotational production systems as well as water requirements for farming crawfish, including important water quality parameters, their desired levels and water consumption budgets.
Cover Page
Crawfish News September 2010 (Vol 3, No 6)
This newsletter discusses managing water for fall flood-up, the importance of BOD on water quality and oxygen management in crawfish ponds, and crawfish industry news.
Fertilization of Fish Ponds
Fertilization of Fish Ponds
When ponds are fertilized, nutrients stimulate the growth of microscopic plants in the water (phytoplankton). Phytoplankton is food for other organisms (zooplankton and larger animals) that are eaten by fish. Abundant growth of these microscopic plants gives water a turbid, greenish color (called a “bloom”) that can prevent light from reaching the pond bottom and reduce the growth of rooted aquatic weeds.
Crawfish News Summer 2010 (Vol 3, No 5)
Crawfish News Summer 2010 (Vol 3, No 5)
This newsletter discusses control of armyworms in late planted crawfish forages, managing wild trash fish in crawfish ponds, the benefits of crawfish ponds as wetland habitat for waterbirds, managing excess water associated with tropical storms and hurricanes, and crawfish legislation passed in the 2010 legislative session.
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