Health & Welfare
Inbreeding affects growth, survival, reproduction of Pacific white shrimp
The Maricultura del Pacífico hatchery in Mexico uses two-stage selection that controls the pedigree of every animal to minimize inbreeding.
Intelligence
Freshwater shrimp can contain pathogenic bacteria that cause illness unless care is exercised by producers, retailers and consumers. Many of the human pathogens can survive frozen storage, but are killed or inactivated by thermal processes.
Health & Welfare
The Maricultura del Pacífico hatchery in Mexico uses two-stage selection that controls the pedigree of every animal to minimize inbreeding.
Intelligence
Spoilage in freshwater prawns is endogenous rather than exogenous and results from proteolytic enzymes in the cephalothorax.
Health & Welfare
In response to Taura Syndrome Virus outbreaks, the U.S. Marine Shrimp Farming Program initiated a selective-breeding program to improve resistance in Pacific white shrimp.
Health & Welfare
Nitrifying bacteria readily form biofilms on surfaces, and colonization by these important bacteria on the interior walls of RAS production units likely provides an additional source of nitrification.
Health & Welfare
A study examined the replacement of poultry byproduct meal with plant proteins and low levels of squid meal in shrimp feeds. Production results for shrimp raised in ponds showed no significant difference in final weight, yield, FCR and survival among the four treatments with varied levels of poultry meal.
Health & Welfare
Intensive nursery systems are an extension of hatcheries to acclimate postlarvae to farm conditions and assess quality and health prior to pond stocking.
Health & Welfare
Maintaining a favorable gut microflora in shrimp can help minimize the impacts of diseases and maximize digestive efficiency. Phytobiotic feed additives modulate microflora in shrimp toward a composition that favors beneficial bacteria and inhibits pathogenic microorganisms.
Aquafeeds
The required level of fishmeal in white shrimp diets can be reduced to 5 percent through substitution as long as fish oil content is kept at 2 percent.
Health & Welfare
A study in Brazil found that the growth superiority brought about by within-family selection of tested shrimp transmitted to the next generation of animals.
Aquafeeds
In a study, the authors evaluated the performance of juvenile white shrimp grown at high density and fed diets with varying levels of methionine. Trends toward improvements in feed intake were observed for diets with reduced fishmeal and HMTBa supplementation.
Health & Welfare
Although still being refined, the IMNV challenge method developed at the University of Arizona has shown promise as a tool to measure resistance in selected family lines of L. vannamei.
Responsibility
Production of Pacific white shrimp in near-shore floating cages at sea was shown technically and economically feasible at small scale for several growing cycles, as managed by artisanal fishers and their families on the Pacific coast of Costa Rica.
Health & Welfare
The objective of a contingency plan is to quickly recover production through rapid initial response and effective implementation of biosecurity measures. Such plans depend on whether the detected pathogen or disease is exotic or endemic, its potential economic impacts and whether it is to be eradicated.
Responsibility
Based on the need to utilize thousands of used plastic feed bags rather than dispose of them, VIMIFOS began selling the bags to companies that reprocess them into pellets used to make plastic utensils.
Health & Welfare
The development of an effective biosecurity plan requires full understanding of facility design and operations, and knowledge of the animals’ health status and the transmission modes of pathogens in order to identify the risks and define meaningful measures.