CN107593548A

CN107593548A - A kind of feeding method of crab

Info

Publication number: CN107593548A
Application number: CN201711022305.2A
Authority: CN
Inventors: 杨东求
Original assignee: Susong East Seeking Aquatic Product Development Co Ltd
Current assignee: Susong East Seeking Aquatic Product Development Co Ltd
Priority date: 2017-10-27
Filing date: 2017-10-27
Publication date: 2018-01-19

Abstract

The invention discloses a kind of feeding method of crab, quantitative feedstuff feeding of fixed place and time is carried out daily, early stage, feed for nursing included fish, shrimp, pluck, greenfeed, freshwater mussel meat, pearl powder, vitamin C, mid-term feed for nursing is pasture and water, sweet potato, pumpkin, potato, and later stage feed for nursing is small fish, screw and pellet；Per bu morning and afternoon feeding twice, daily feeding amount accounts for 4% the 7% of crab body weight, and wherein feeding amount in afternoon accounts for 60% the 70% of whole day；The present invention has advantages below compared with prior art：Rational feeding amount and feeding time, it is to come out activity at night to consider crab, and main feeding is placed on into afternoon, on the one hand ensures that the food of cray is maximum and utilizes, avoids wasting, and is on the one hand not remaining too many residue feed, makes so as to influence water quality.

Description

A kind of feeding method of crab

Technical field

The present invention relates to a kind of feeding method of technical field of aquaculture, more particularly to crab.

Background technology

Crab is that mouthfeel is delicious, shuttles among each big city side street, therefore annual consumption is very big because of various ways, Therefore more and better crab is just needed.And crab is in developmental process, often due to having launched substantial amounts of feed make it that crab is easy Because the cultivation of pasture and water results in the need for launching substantial amounts of feed not in time when catching, while cultivate, the body of crab is caused Matter declines, and extends crab growth cycle, causes the accumulation of crab meat matter slower, while also reduce economic benefit.

The content of the invention

It is an object of the invention to overcome the deficiencies of the prior art and provide one kind disclosure satisfy that each growth period institute of crab Need, and accomplish the feeding method for the crab that feed maximally utilizes.

The present invention is achieved by the following technical solutions：

A kind of feeding method of crab, comprises the following steps：

Carry out quantitative feedstuff feeding of fixed place and time daily, early stage feed for nursing include fish, shrimp, pluck, greenfeed, Freshwater mussel meat, pearl powder, vitamin C, mid-term feed for nursing are pasture and water, sweet potato, pumpkin, potato, and later stage feed for nursing is small fish, spiral shell Silk and pellet；Per bu morning and afternoon feeding twice, daily feeding amount accounts for the 4%-7% of crab body weight, wherein feeding amount in afternoon Account for the 60%-70% of whole day；

Existence function relation：F (x)=￠ g (x), f (x) are feeding amount, and ￠=4%-7%, g (x) are crab body weight；

And following relation be present into the forage volume of crab body weight, seedling body weight and input：

G (x)=g (0)+1.5m (x),

G (0) is seedling body weight, and m (x) is the forage volume of input, and g (x) is into crab body weight.

Preferably, feed for nursing early stage includes fish 50-60 parts, shrimp 40-50 parts, pluck 20-30 parts, greenfeed 40- 50 parts, freshwater mussel meat 10-20 parts, pearl powder 10-15 parts, vitamin C 12-15 parts；Mid-term feed for nursing is pasture and water 20-30 parts, sweet potato 30-40 parts, pumpkin 30-40 parts, potato 40-50 parts, later stage feed for nursing are small fish 50-60 parts, screw 50-60 parts and particle Feed 40-50 parts.

Preferably, the 3-5 months are referred to the early stage, mid-term refers to the 5-7 months, and the later stage refers to the 7-10 months.

The present invention has advantages below compared with prior art：

Rational feeding amount and feeding time, it is to come out activity at night to consider crab, main feeding is placed on into afternoon, on the one hand Ensure that the food of crab is maximum to utilize, be on the one hand not to be left too many feed, so as to influence water quality.

Embodiment

Embodiments of the invention are elaborated below, the present embodiment is carried out lower premised on technical solution of the present invention Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementation Example.

A kind of cultural method of crab, comprises the following steps：

(1) culturing pool prepares, and selection is regular, and the pond of the smooth few mud of bottom of pond, 2.0 meters of pond depth, mud height For 10-14 centimetres, it is exposed to the sun before water filling 2-4 days, is then injected into 5-10 centimetres of water, by the every mu of life for being spilled into 60-70 kilograms stone Ash carries out disinfection and improved pH value, and then water filling makes the depth of water in 0.7-1.5 rice, the water inlet of the culturing pool, delivery port and The surrounding of culturing pool is equipped with anti-escape network, and the culturing pool is provided with nature gap；

(2) processing of culturing pool, the bottom plantation pasture and water in culturing pool, algae is cultivated after culturing pool water inlet in water, and And so that the area coverage of algae is more than 50% in culturing pool；The algae is to include waterweed, eel grass, hydrilla verticillata, horse Carry out bog pondweed；

(3) seedling is launched, chooses that physical strong, appendage is complete, disease-free and injury-free, vitality is strong and specification identical juvenile crab, Launch in culturing pool, by every mu 280-320 kilograms of juvenile crab, 10-12 DEG C of water temperature,；Juvenile crab is put into pond, launches juvenile crab Shi Shuiwen is advisable at 10-12 DEG C, and juvenile crab first is put into 3-4 minutes in pond water in launch process, is putting back to bank 30-35 minutes And crab is put into water and adapted to back and forth 2 times, the juvenile crab is washed 10-15 minutes before dispensing with 3%-5% salt water-bath, kills Parasite and pathogenic bacteria；

(4) breeding environment is ensured, it is necessary to ensure in culturing pool amount of oxygen in 6.3-8.0mg/L, in mud 5-8 centimeters, Set some flexible pipes to be connected with aerator, change within 4-8 days water once, sterilize once within 10-15 days, until capture；The principle for changing water is, In pond 1/3 water is changed every time；

(5) feeding, quantitative feedstuff feeding of fixed place and time is carried out daily, early stage, feed for nursing included fish 50-60 parts, shrimp 40-50 parts, pluck 20-30 parts, greenfeed 40-50 parts, freshwater mussel meat 10-20 parts, pearl powder 10-15 parts, vitamin C 12-15 Part；Mid-term feed for nursing is pasture and water 20-30 parts, sweet potato 30-40 parts, pumpkin 30-40 parts, potato 40-50 parts, and the later stage, which feeds, raises Expect for small fish 50-60 parts, screw 50-60 parts and pellet 40-50 parts；Per bu morning and afternoon feeding twice, daily feeding amount The 4%-7% of crab body weight is accounted for, wherein feeding amount in afternoon accounts for the 60%-70% of whole day；The early stage refers to the 3-5 months, and mid-term refers to 5-7 Month, the later stage refers to 7 to October；

G (x)=g (0)+1.5m (x),

G (0) is seedling body weight, and m (x) is the forage volume of input, and g (x) is into crab body weight；

(6) calcium supplementing product is used cooperatively, in the crab shell phase, every 1 kilogram of calcium product input 3-4 mus pond, 10-15 mono- The individual shell phase；The calcium agent is grain products or aqua, is uniformly launched after being dissolved in water, or Direct Uniform is sprinkled into pond；

(7) captured into crab, concentrate and catch in October.

Easy to operate, the rule of life on the one hand hidden by day and come out at night according to crab of the invention so that main feeding at dusk or At night so that crab is fed in time, is not to influence speed of production；One side swill is few, improves food utilization, subtracts Little waste, residue polluted water too much is not, a clean living environment is kept, also reduces the number for changing water, save Cost of labor.

The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.

Claims

1. a kind of feeding method of crab, it is characterised in that comprise the following steps：

Quantitative feedstuff feeding of fixed place and time is carried out daily, and early stage, feed for nursing included fish, shrimp, pluck, greenfeed, freshwater mussel Meat, pearl powder, vitamin C, mid-term feed for nursing are pasture and water, sweet potato, pumpkin, potato, and later stage feed for nursing is small fish, screw And pellet；Per bu morning and afternoon feeding twice, daily feeding amount accounts for the 4%-7% of crab body weight, and wherein afternoon, feeding amount accounted for The 60%-70% of whole day；

G (x)=g (0)+1.5m (x),

2. the feeding method of a kind of crab according to claim 1, it is characterised in that early stage, feed for nursing included fish 50-60 Part, shrimp 40-50 parts, pluck 20-30 parts, greenfeed 40-50 parts, freshwater mussel meat 10-20 parts, pearl powder 10-15 parts, vitamin C12-15 parts；Mid-term feed for nursing be pasture and water 20-30 parts, sweet potato 30-40 parts, pumpkin 30-40 parts, potato 40-50 parts, the later stage Feed for nursing is small fish 50-60 parts, screw 50-60 parts and pellet 40-50 parts.

3. the feeding method of a kind of crab according to claim 1, it is characterised in that the early stage refers to the 3-5 months, and mid-term refers to The 5-7 months, later stage refer to the 7-10 months.