Tag harvest

La decisión de cosechar implica la consideración de diversos factores, incluyendo los precios de mercado, la necesidad de los clientes, la biomasa y la condición de los animales, y otros. Varios pasos están involucrados, la mayoría dirigidos a mantener la máxima calidad de los animales cuando son cosechados, sacrificados, tratados y transportados a la planta, y procesados y empacados. 

The decision to harvest involves consideration of various factors, including market prices, customers’ need, biomass and condition of the animals and others. Several steps are involved, most aimed at maintaining maximum quality of the animals as they are harvested, sacrificed, treated and transported to the plant and processed and packed. 

Harvesting a crop of shrimp is a critical step for any shrimp farming venture. Several months of efforts and resources to properly raise a quality crop have already been invested, and this quality must be preserved. The decision to harvest involves consideration of various factors. 

The use of larger and deeper tanks can reduce building, labor and other aquaculture production costs. However, the ability to grade and transfer large numbers of fish is more challenging when using large tanks. In a comparison of the effectiveness of a purse seine and a hinged clamshell to crowd fish in large tanks, the latter was easier to control and less stressful to salmonids. With a slotted bar rack in a side panel of the clamshell crowder, fish were simultaneously graded in size. 

Field trails in Alabama, USA, demonstrated the potential of raising striped mullet with Pacific white shrimp in inland ponds. Using wild-caught fingerlings at low density, the trials found the same survival rates as for mullet and shrimp grown separately. 

Environmental and other challenges have led to reduced harvests of wild oysters in the United States. In a study, the authors evaluated oysters cultured in a recirculating aquaculture system with zero water exchange for several months. 

Bangladesh shrimp farmers are adopting measures to improve quality to comply with international standards. A survey found that most farmers visually evaluated shrimp by checking size, weight and signs of disease before harvesting. 

The establishment of land-based recirculating systems for cobia could expand production of the species. The authors, who demonstrated cobia are well suited for culture in tanks, conducted a study to compare the performance of cobia reared at different densities. 

A proposed new metric, the production productivity index, or PPI, reports daily production for shrimp postlarvae. The new metric converts production data into relative terms, allowing meaningful comparisons across farms and individual ponds regardless of production days, pond size or stocking density. 

The authors conducted a study to determine whether channel catfish systematically develop off-flavors after partial harvest as well as the possible origins of the flavors. 

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. 

In studies, high dissolved carbon dioxide concentrations in culture tank water induced rainbow trout to swim to an area with lower concentrations.