A temporary bait suitable for female crabs of Portunus trituberculatus

Abstract

The invention discloses temporary rearing baits suitable for female portunus trituberculatus. The temporary rearing baits are characterized by comprising baits I and baits II, which are matched, wherein the baits I comprise main ingredients of Peruvian fishmeal, meat bone meal, small trash fishes, ground clamworms and the like; the baits II comprise main ingredients of Chinese fishmeal, ground potamocorbula, small trash fishes, dewatered carrots and the like. The invention further relates to a feeding method of the baits; the baits I are fed during the temporary rearing early stage of the female portunus trituberculatus, and the baits II are fed during the temporary rearing later stage of the female portunus trituberculatus. The temporary rearing baits have the effects of remarkably enhancing the pathogen tolerance and low-temperature tolerance of the female portunus trituberculatus, increasing the survival rate of the temporarily reared female portunus trituberculatus, improving the quality of portunus trituberculatus cream and increasing the breeding yield. The raw materials of the baits are easily available, a process is simple, and the nutrition is balanced, so that the problems of high morbidity rate during temporary tearing period, low growth speed, poor portunus trituberculatus cream quality and the like of the female portunus trituberculatus are effectively solved; the baits can be applied to temporary tearing of the female portunus trituberculatus in a large scale.

Description

technical field [0001] The invention relates to a bait for breeding, in particular to a bait suitable for temporarily raising female Portunus trituberculatus. Background technique [0002] Portunus trituberculatus is cultivated on a relatively large scale in northern coastal provinces such as Shandong, Jiangsu and Hebei in my country. Northern provinces often encounter severe cold and low temperature in autumn and winter, and the seawater temperature sometimes drops to 0°C, making it difficult for swimming crabs to survive the winter. Most swimming crabs are harvested and marketed around the Mid-Autumn Festival. However, at this time, the female swimming crabs (female crab weight <150g / only) are not plump enough, and the color and taste are not good! Moreover, female swimming crabs compete with male crabs for listing, and the price is flat. If female portunus crabs can be temporarily bred and fattened in indoor cement pools or hanging cages in the sea area for a period ...

AI Technical Summary

Problems solved by technology

Portunus trituberculatus bait in the prior art and a previously authorized ecological bait for Portunus trituberculatus (ZL201010105256.0) are general-purpose baits used for the entire breeding cycle, and are mainly formulated with reference to the bait formula for prawns, ignoring the female crabs of Portunus trituberculatus Due to the particularity of the temporary breeding process and the stages of growth and development, there is little consideration for the fattening and coloring of the ovary of Portunus female crabs, but it is important for improving the disease resistance and low temperature resistance of female crabs, stimulating the growth potential of female crabs, and improving the quality of crab paste. Insufficient consideration on the one hand leads to slow growth of Portunus female crabs during temporary breeding, and the color of the crab cream is not ideal; moreover, under the double stress of low temperature and potential pathogens, female crabs become seriously ill in the later stage of temporary breeding, which directly affects the female crabs. economic benefits

Images