CN109006594A - A kind of feeding method improving Larimichthys crocea megathermal period survival rate - Google Patents

A kind of feeding method improving Larimichthys crocea megathermal period survival rate Download PDF

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Publication number
CN109006594A
CN109006594A CN201811049797.9A CN201811049797A CN109006594A CN 109006594 A CN109006594 A CN 109006594A CN 201811049797 A CN201811049797 A CN 201811049797A CN 109006594 A CN109006594 A CN 109006594A
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China
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parts
feeding
food
satiated
megathermal period
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CN201811049797.9A
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Chinese (zh)
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涂永芹
贠彪
钱雪桥
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珠海海龙生物科技有限公司
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Priority to CN201811049797.9A priority Critical patent/CN109006594A/en
Publication of CN109006594A publication Critical patent/CN109006594A/en

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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K61/00Culture of aquatic animals
    • A01K61/10Culture of aquatic animals of fish
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81Aquaculture, e.g. of fish

Abstract

The present invention relates to a kind of feeding methods for improving Larimichthys crocea megathermal period survival rate, start to be fed daily by feeding volume control in the 70%-80% for the amount of being satiated with food in morning 5:00-6:00 including 50-60 days before the megathermal period;Feeding volume is controlled into the 60%-70% in the amount of being satiated with food daily during high temperature, is fed in morning 5:00-6:00, wherein before the megathermal period and during high temperature, be once satiated with food in morning 5:00-6:00 every 10 days is fed to obtain the amount of being satiated with food.The beneficial effects of the present invention are: the liver and gallbladder metabolic burden of Larimichthys crocea and the abnormal deposition of liver fat can be effectively reduced, fish body health is conducive to;The megathermal period Larimichthys crocea liver and gallbladder syndrome death rate can be effectively reduced, breeding process survival rate is improved;Larimichthys crocea survival rate is high, long speed is fast, remarkable in economical benefits.

Description

A kind of feeding method improving Larimichthys crocea megathermal period survival rate
Technical field
The present invention relates to a kind of feeding method of Larimichthys crocea more particularly to a kind of throwings for improving Larimichthys crocea megathermal period survival rate The method of feeding.
Background technique
Larimichthys crocea (Pseudosciaena crocea R.) is subordinate to Perciformes, Sciaenidae, yellow croaker category, be commonly called as yellow croaker, Cucumber fish, Cymbaria dahurica etc. are that warm nature mass migration fish are warmed up in coastal waters, are mainly distributed on China's the East China Sea and Nan Haibei The sea areas such as portion.Larimichthys crocea delicious meat, full of nutrition, the golden yellow symbol of body colour is rich and honour, the deep blueness by consumer and aquaculturist It looks at.By 2017, about 180,000 tons of Larimichthys crocea annual output, the direct output value about 10,000,000,000, directly with indirect practitioner more than 30 ten thousand People, Larimichthys crocea marine fish for years largest for China.
The most suitable growth water temperature of Larimichthys crocea is 22-26 DEG C, liver and gallbladder syndrome (being commonly called as: white gill disease) when water temperature is higher than 28 DEG C It comes into vogue, Symptoms are as follows: cheek silk blood loss whiting, it is dark green or blackish green to dissect the whiting of visible liver or yellowing, gall-bladder, spleen Without color, dead fish body surface is complete for enlargement, kidney denaturation.In the annual 7-9 megathermal period month, Eastern Fujian sea area Pseudosciaena crocea frequency Frequency breaks out the disease, and disease incidence is generally in 2-3 at but serious person is up to 7-8 at causing serious economic loss to raiser.
During artificial breeding, raiser is usually satiated with food before the megathermal period to pursue higher productivity effect Or it is excessive feed, and be then usually taken hungry for a long time in the megathermal period or hungry full alternately (dissolved oxygen is high during big tidewater, feeds;It is small Dissolved oxygen is low during tidewater, hungry) processing.It is this to feed distinct disadvantage there are two modes: 1, to be satiated with food before the megathermal period or excessively feed Not only waste feed, reduction efficiency of feed utilization, can also aggravate large yellow croaker liver and gastral metabolic burden, cause Larimichthys crocea The liver and gallbladder such as fatty liver syndrome and intestines problem;2, long-time is hungry during high temperature or the full alternating of famine easily leads to Larimichthys crocea and grows and stops It is stagnant in addition fall weight, and easily lead to constitution be deteriorated, easy infection germ, when feeding again dead fish increase.
Therefore, it needs one kind and reasonably feeds mode to change the status quo, reduce the damage of Larimichthys crocea megathermal period liver and gallbladder syndrome Consumption improves the survival rate of megathermal period Larimichthys crocea.
Summary of the invention
Against the above deficiency, the present invention provides a kind of feeding method for improving Larimichthys crocea megathermal period survival rate, improves rheum officinale Survival rate and the speed of growth of the fish in the megathermal period.
The present invention reaches above-mentioned purpose by following scheme:
A kind of feeding method improving Larimichthys crocea megathermal period survival rate, 50-60 days before the megathermal period start to feed daily Amount control is fed in the 70%-80% for the amount of being satiated with food in morning 5:00-6:00;Feeding volume is controlled daily during high temperature It in the 60%-70% for the amount of being satiated with food, is fed in morning 5:00-6:00, wherein before the megathermal period and during high temperature, every 10 It is once satiated with food in morning 5:00-6:00 and feed to obtain the amount of being satiated with food.
The present invention passes through the method limited before the megathermal period with the different feeding volumes during high temperature, is especially different the amount of being satiated with food The stringent limitation of the feeding volume of ratio significantly reduces the megathermal period Larimichthys crocea liver and gallbladder syndrome death rate, improves megathermal period Larimichthys crocea Survival rate, while long speed, remarkable in economical benefits can be taken into account.
Preferably, the Feeding time before the megathermal period is 5 points of morning.
Preferably, the Feeding time during the high temperature is 5 points of morning.
In a preferred embodiment, start within 50-60 days before the megathermal period daily to control feeding volume in the amount of being satiated with food 80%, and daily control feeding volume the 65% of the amount of being satiated with food during high temperature.
In a preferred embodiment, start within 50-60 days before the megathermal period daily to control feeding volume in the amount of being satiated with food 70%, and daily control feeding volume the 70% of the amount of being satiated with food during high temperature.
In a preferred embodiment, start within 50-60 days before the megathermal period daily to control feeding volume in the amount of being satiated with food 75%, and daily control feeding volume the 60% of the amount of being satiated with food during high temperature.
In a more preferred embodiment, start within 50-60 days before the megathermal period that feeding volume control is being satiated with food daily The 75% of amount, and daily control feeding volume the 65% of the amount of being satiated with food during high temperature.
In above-mentioned feeding method, 50-60 days before the megathermal period are about the first tenday period of a month in May to late June.
It is about late September early July-during high temperature in above-mentioned feeding method.
In above-mentioned feeding method, the feed that feeds used can be commercially available rheum officinale fish meal, preferably comprise following Raw material: 15-20 parts of imported fish meal, 15-20 parts of domestic fish meal, chicken meal 10-15 parts of the U.S., corn protein powder 6-10 Part, 10-15 parts of dregs of beans, 15-18 parts of Strong flour, molten 2-4 parts of slurry of fish of enzymatic hydrolysis, refined fish oil 2-4 parts, 2-4 parts of soya-bean oil, soybean phosphorus 2-4 parts of fatty oil, 1.5-3 parts of calcium dihydrogen phosphate, 0.5-1 parts of vitamin premix, 0.5-1.5 parts of mineral salt pre-composition, chlorination gallbladder 0.1-0.5 parts of alkali, 0.1-0.3 parts of natural carotenol, 0.1-0.3 parts of glycine betaine, 0.01-0.05 parts of antioxidant, mould inhibitor 0.01-0.05 parts.
Compared with prior art, the beneficial effects of the present invention are:
1, present invention 50-60 days i.e. control feeding volume before the megathermal period, can effectively reduce the liver and gallbladder metabolic burden of Larimichthys crocea And the abnormal deposition of liver fat, be conducive to fish body health;
2, the present invention can effectively reduce the megathermal period Larimichthys crocea liver and gallbladder syndrome death rate it has been confirmed by experiments that, and raising cultivated Journey survival rate;
3, the present invention is uninterruptedly fed in the megathermal period, can promote the growth of Larimichthys crocea, prevents growth retardation from even falling weight, together When can enhance Larimichthys crocea constitution, reduce germ and infect probability;
4, it is fed using feeding method of the invention, Larimichthys crocea survival rate is high, long speed is fast, remarkable in economical benefits.
Specific embodiment
Below in conjunction with specific embodiment, invention is further explained.
Embodiment 1
A kind of feeding method improving Larimichthys crocea megathermal period survival rate, 50-60 days before the megathermal period start (the first tenday period of a month in May to 6 The last ten-days period moon), feeding volume is controlled into the 70%-80% in the amount of being satiated with food daily, is fed in morning 5:00;(the July during high temperature Late September in the first tenday period of a month -) feeding volume is controlled into the 60%-70% in the amount of being satiated with food daily, it is fed in morning 5:00, wherein in height Before the warm phase and during high temperature, be once satiated with food in morning 5:00 every 10 days is fed to obtain the amount of being satiated with food.
Test example 1:
On May 2nd, 2015, sea area was tested under the San Du Ao pond of Fujian Province Ningde City Jiaocheng District to September 28th.It chooses 12 frame steck net cages (cage size: 12.0m × 8.0m × 6.0m, the depth of water: 5.6m), every net cage puts 10000 tail (counterpoise of fish 135.6±0.6g).Wherein 6 net cages use feeding method of the invention, i.e., (2-June 30 in May 60 days before the megathermal period Day), it is fed daily in morning 5:00 or so, feeding volume is controlled the 80% of the amount of being satiated with food;90 days (the July 1 during high temperature Day-September 28 days), it is fed daily in morning 5:00 or so, feeding volume is controlled the 65% of the amount of being satiated with food.Before megathermal period and During high temperature, every 10 days, be once satiated with food in morning 5:00 or so was fed to obtain feeding volume of being satiated with food.Other 6 net cages As control, the universal feeding method of sea area raiser is imitated, i.e., (2-June 30 May) satisfies 60 days before the megathermal period Food is fed, during the big tidewater of megathermal period (1 day-September 28 days in July) (4-5 days) in every morning 5:00 or so be satiated with food It feeds, and (4-5 days) are not fed then during the small tidewater of megathermal period, large and small tidewater alternate cycles.Record daily food ration And dead fish number, it tests 150 days by a definite date.
Feed uses extruding commercial feed, is formulated as follows: 15 parts of imported fish meal, 20 parts of domestic fish meal, and U.S.'s chicken meal 12 Part, 10 parts of corn protein powder, 13 parts of dregs of beans, 16 parts of Strong flour, molten 2 parts of the slurry of enzymatic hydrolysis fish, 3 parts of refined fish oil, 2 parts of soya-bean oil, greatly 2 parts of Fabaceous Lecithin oil, 2 parts of calcium dihydrogen phosphate, 1 part of vitamin premix, 1 part of mineral salt pre-composition, 0.5 part of choline chloride, naturally 0.2 part of lutein, 0.2 part of glycine betaine, 0.05 part of antioxidant, 0.05 part of mould inhibitor.Crude protein content of feed 46.5%, thick rouge Fat content 12.6%, using can value 18.2kJ/g.
Test result is shown in Table 1.
The different feeding methods of table 1. ingest to Larimichthys crocea in embodiment 1, grow and the influence of survival rate
Note: different lowercase persons indicate significant difference (P < 0.05) after data of going together in table
As known from Table 1, the whole survival rate of test group is high compared with control group by 12.5%, and the liver and gallbladder syndrome death rate relatively compares Group low 12.1%, meanwhile, terminal weight, rate of body weight gain, food ration and the grazing rate of test group are also significantly above control group.This is right Result than test illustrates that feeding method of the invention can significantly reduce the megathermal period Larimichthys crocea liver and gallbladder syndrome death rate, improves Megathermal period Larimichthys crocea survival rate and the speed of growth, remarkable in economical benefits.
Test example 2:
On May 5th, 2016, sea area was tested under the San Du Ao pond of Fujian Province Ningde City Jiaocheng District to September 30th.It chooses 12 frame steck net cages (cage size: 12.0m × 8.0m × 6.0m, the depth of water: 5.6m), every net cage puts 10000 tail (counterpoise of fish 140.6±0.3g).Wherein 6 net cages use feeding method of the invention, i.e., (5-June 30 in May 57 days before the megathermal period Day), it is fed daily in morning 5:00 or so, feeding volume is controlled the 70% of the amount of being satiated with food;92 days (the July 1 during high temperature Day-September 30 days), it is fed daily in morning 5:00 or so, feeding volume is controlled the 70% of the amount of being satiated with food.Before megathermal period and During high temperature, every 10 days, be once satiated with food in morning 5:00 or so was fed to obtain feeding volume of being satiated with food.Other 6 net cages As control, the universal feeding method of sea area raiser is imitated, i.e., (5-June 30 May) satisfies 57 days before the megathermal period Food is fed, during the big tidewater of megathermal period (1 day-September 30 days in July) (4-5 days) in every morning 5:00 or so be satiated with food It feeds, and (4-5 days) are not fed then during the small tidewater of megathermal period, large and small tidewater alternate cycles.Record daily food ration And dead fish number, it tests 149 days by a definite date.
Feed uses extruding commercial feed, is formulated as follows: 16 parts of imported fish meal, 18 parts of domestic fish meal, and U.S.'s chicken meal 15 Part, 6 parts of corn protein powder, 15 parts of dregs of beans, 16 parts of Strong flour, molten 3 parts of the slurry of enzymatic hydrolysis fish, 2 parts of refined fish oil, 2 parts of soya-bean oil, soybean 3.3 parts of phosphatide oil, 1.5 parts of calcium dihydrogen phosphate, 0.5 part of vitamin premix, 1 part of mineral salt pre-composition, 0.3 part of choline chloride, 0.2 part of natural carotenol, 0.15 part of glycine betaine, 0.02 part of antioxidant, 0.03 part of mould inhibitor.Crude protein content of feed 46.7%, crude fat content 12.5%, using can value 18.3kJ/g.
Test result is shown in Table 2.
The different feeding methods of table 2. ingest to Larimichthys crocea in embodiment 2, grow and the influence of survival rate
Test group Control group
Initial weight (g) 140.8±0.6 140.4±0.5
Terminal weight (g) 342.8±2.2a 310.6±3.0b
Rate of body weight gain (%) 143.5±1.5a 121.2±2.1b
Food ration (g) 365.7±2.9a 309.8±3.8b
Grazing rate (%) 1.02±0.02a 0.92±0.02b
Feed coefficient 1.81±0.02 1.82±0.02
The liver and gallbladder syndrome death rate (%) 7.8±0.9a 21.2±2.3b
Test whole survival rate (%) 90.0±1.1a 76.3±2.7b
Note: different lowercase persons indicate significant difference (P < 0.05) after data of going together in table
As known from Table 2, the whole survival rate of test group is high compared with control group by 13.7%, and the liver and gallbladder syndrome death rate relatively compares Group low 13.4%, meanwhile, terminal weight, rate of body weight gain, food ration and the grazing rate of test group are also significantly above control group.This is right Result than test illustrates that feeding method of the invention can significantly reduce the megathermal period Larimichthys crocea liver and gallbladder syndrome death rate, improves Megathermal period Larimichthys crocea survival rate and the speed of growth, remarkable in economical benefits.
Test example 3:
On May 3rd, 2017 was tested to September 29th in the Fujian Province town the Ningde City Xiapu County Xi Nan preceding sea area of disk.It chooses 12 frame steck net cages (cage size: 12.0m × 8.0m × 6.0m, the depth of water: 5.6m), every net cage puts 10000 tail (counterpoise of fish 138.1±0.4g).Wherein 6 net cages use feeding method of the invention, i.e., (3-June 30 in May 59 days before the megathermal period Day), it is fed daily in morning 5:00 or so, feeding volume is controlled the 75% of the amount of being satiated with food;91 days (the July 1 during high temperature Day-September 29 days), it is fed daily in morning 5:00 or so, feeding volume is controlled the 60% of the amount of being satiated with food.Before megathermal period and During high temperature, every 10 days, be once satiated with food in morning 5:00 or so was fed to obtain feeding volume of being satiated with food.Other 6 net cages As control, the universal feeding method of sea area raiser is imitated, i.e., (6-June 30 May) satisfies 56 days before the megathermal period Food is fed, during the big tidewater of megathermal period (1 day-September 29 days in July) (4-5 days) in every morning 5:00 or so be satiated with food It feeds, and (4-5 days) are not fed then during the small tidewater of megathermal period, large and small tidewater alternate cycles.Record daily food ration And dead fish number, it tests 150 days by a definite date.
Feed uses extruding commercial feed, is formulated as follows: 18 parts of imported fish meal, 15 parts of domestic fish meal, and U.S.'s chicken meal 14 Part, 8 parts of corn protein powder, 15 parts of dregs of beans, 16.5 parts of Strong flour, molten 2 parts of the slurry of enzymatic hydrolysis fish, 2.5 parts of refined fish oil, soya-bean oil 2.5 Part, 2.5 parts of soyabean lecithin oil, 1.7 parts of calcium dihydrogen phosphate, 0.5 part of vitamin premix, 1 part of mineral salt pre-composition, choline chloride 0.5 part, 0.15 part of natural carotenol, 0.1 part of glycine betaine, 0.02 part of antioxidant, 0.03 part of mould inhibitor.Crude protein content of feed 46.2%, crude fat content 12.6%, using can value 18.2kJ/g.
Test result is shown in Table 3.
The different feeding methods of table 3. ingest to Larimichthys crocea in embodiment 3, grow and the influence of survival rate
Test group Control group
Initial weight (g) 137.8±0.3 138.3±0.5
Terminal weight (g) 315.9±1.8a 303.5±2.4b
Rate of body weight gain (%) 129.2±1.0a 119.5±1.2b
Food ration (g) 328.2±2.4a 305.8±3.0b
Grazing rate (%) 0.97±0.01a 0.93±0.01b
Feed coefficient 1.84±0.01 1.85±0.02
The liver and gallbladder syndrome death rate (%) 6.5±0.5a 20.2±2.1b
Test whole survival rate (%) 91.4±1.1a 78.1±2.4b
Note: different lowercase persons indicate significant difference (P < 0.05) after data of going together in table
As known from Table 3, the whole survival rate of test group is high compared with control group by 13.3%, and the liver and gallbladder syndrome death rate relatively compares Group low 13.7%, meanwhile, terminal weight, rate of body weight gain, food ration and the grazing rate of test group are also significantly above control group.This is right Result than test illustrates that feeding method of the invention can significantly reduce the megathermal period Larimichthys crocea liver and gallbladder syndrome death rate, improves Megathermal period Larimichthys crocea survival rate and the speed of growth, remarkable in economical benefits.
Test example 4:
On May 4th, 2017 to September 30th, tests in Fujian Province Ningde City Xiapu County small stream south town head's waist sea area.It chooses 12 frame steck net cages (cage size: 12.0m × 8.0m × 6.0m, the depth of water: 5.6m), every net cage puts 10000 tail (counterpoise of fish 143.4±0.4g).Wherein 6 net cages use feeding method of the invention, i.e., (4-June 30 in May 58 days before the megathermal period Day), it is fed daily in morning 5:00 or so, feeding volume is controlled the 75% of the amount of being satiated with food;90 days (the July 1 during high temperature Day-September 28 days), it is fed daily in morning 5:00 or so, feeding volume is controlled the 65% of the amount of being satiated with food.Before megathermal period and During high temperature, every 10 days, be once satiated with food in morning 5:00 or so was fed to obtain feeding volume of being satiated with food.Other 6 net cages As control, the universal feeding method of sea area raiser is imitated, i.e., (4-June 30 May) satisfies 58 days before the megathermal period Food is fed, during the big tidewater of megathermal period (1 day-September 30 days in July) (4-5 days) in every morning 5:00 or so be satiated with food It feeds, and (4-5 days) are not fed then during the small tidewater of megathermal period, large and small tidewater alternate cycles.Record daily food ration And dead fish number, it tests 150 days by a definite date.
Feed uses extruding commercial feed, is formulated as follows: 20 parts of imported fish meal, 16 parts of domestic fish meal, and U.S.'s chicken meal 15 Part, 8 parts of corn protein powder, 10 parts of dregs of beans, 16 parts of Strong flour, molten 2.5 parts of the slurry of enzymatic hydrolysis fish, 4 parts of refined fish oil, 2 parts of soya-bean oil, greatly 1.5 parts of Fabaceous Lecithin oil, 2.5 parts of calcium dihydrogen phosphate, 0.5 part of vitamin premix, 1 part of mineral salt pre-composition, choline chloride 0.5 Part, 0.2 part of natural carotenol, 0.2 part of glycine betaine, 0.05 part of antioxidant, 0.05 part of mould inhibitor.Crude protein content of feed 46.8%, crude fat content 12.9%, using can value 18.4kJ/g.
Test result is shown in Table 4.
The different feeding methods of table 4. ingest to Larimichthys crocea in embodiment 4, grow and the influence of survival rate
Test group Control group
Initial weight (g) 143.7±0.6 143.1±0.4
Terminal weight (g) 339.5±1.3a 315.1±2.0b
Rate of body weight gain (%) 136.3±1.1a 120.2±1.9b
Food ration (g) 349.7±1.5a 310.4±1.6b
Grazing rate (%) 0.97±0.01a 0.91±0.00b
Feed coefficient 1.79±0.02 1.80±0.02
The liver and gallbladder syndrome death rate (%) 7.3±0.4a 22.0±1.3b
Test whole survival rate (%) 90.7±0.7a 76.6±2.1b
Note: different lowercase persons indicate significant difference (P < 0.05) after data of going together in table
As known from Table 4, the whole survival rate of test group is high compared with control group by 14.1%, and the liver and gallbladder syndrome death rate relatively compares Group low 14.7%, meanwhile, terminal weight, rate of body weight gain, food ration and the grazing rate of test group are also significantly above control group.This is right Result than test illustrates that feeding method of the invention can significantly reduce the megathermal period Larimichthys crocea liver and gallbladder syndrome death rate, improves Megathermal period Larimichthys crocea survival rate and the speed of growth, remarkable in economical benefits.
Comparative example
On May 4th, 2017 to September 30th, tests in Fujian Province Ningde City Xiapu County small stream south town head's waist sea area.It chooses 30 frame steck net cages (cage size: 12.0m × 8.0m × 6.0m, the depth of water: 5.6m), every net cage puts 10000 tail (counterpoise of fish 143.2±0.6g).It is divided into 5 groups, every group of 6 net cages.Wherein use feeding method of the invention for the 1st group, i.e., 58 before the megathermal period It its (4-June 30 May), is fed daily in morning 5:00 or so, feeding volume is controlled the 75% of the amount of being satiated with food;In height It 90 days during temperature (1 day-September 28 days in July), is fed daily in morning 5:00 or so, feeding volume is controlled in the amount of being satiated with food 65%.2nd group 58 days before the megathermal period (4-June 30 May), is fed in morning 5:00 or so, by feeding volume daily Control is the 65% of the amount of being satiated with food;90 days during high temperature (1 day-September 28 days in July), fed daily in morning 5:00 or so, Feeding volume is controlled the 75% of the amount of being satiated with food.3rd group 58 days before the megathermal period (4-June 30 May), daily in morning 5:00 Left and right is fed, and feeding volume is controlled the 65% of the amount of being satiated with food;90 days during high temperature (1 day-September 28 days in July), daily in Morning 5:00 or so is fed, and feeding volume is controlled the 55% of the amount of being satiated with food.4th group of (4 days -6 May 58 days before the megathermal period The moon 30), it is fed daily in morning 5:00 or so, feeding volume is controlled the 85% of the amount of being satiated with food;90 days during high temperature (1 day-September 28 days in July), is fed in morning 5:00 or so daily, and feeding volume is controlled the 55% of the amount of being satiated with food.5th group It 58 days before the megathermal period (4-June 30 May), is fed daily in morning 5:00 or so, feeding volume control is being satiated with food The 85% of amount;90 days during high temperature (1 day-September 28 days in July), fed daily in morning 5:00 or so, by feeding volume control System is the 75% of the amount of being satiated with food.All groups before the megathermal period and during high temperature, every 10 days, are once satisfied in morning 5:00 or so Food is fed to obtain feeding volume of being satiated with food.Daily food ration and dead fish number are recorded, is tested 150 days by a definite date.The results are shown in Table 5.
Feed uses extruding commercial feed, is formulated as follows: 20 parts of imported fish meal, 16 parts of domestic fish meal, and U.S.'s chicken meal 15 Part, 8 parts of corn protein powder, 10 parts of dregs of beans, 16 parts of Strong flour, molten 2.5 parts of the slurry of enzymatic hydrolysis fish, 4 parts of refined fish oil, 2 parts of soya-bean oil, greatly 1.5 parts of Fabaceous Lecithin oil, 2.5 parts of calcium dihydrogen phosphate, 0.5 part of vitamin premix, 1 part of mineral salt pre-composition, choline chloride 0.5 Part, 0.2 part of natural carotenol, 0.2 part of glycine betaine, 0.05 part of antioxidant, 0.05 part of mould inhibitor.Crude protein content of feed 46.8%, crude fat content 12.9%, using can value 18.4kJ/g.
The different feeding methods of table 5. ingest to 5 groups of Larimichthys croceas, grow and the influence of survival rate
Note: different lowercase persons indicate significant difference (P < 0.05) after data of going together in table
As known from Table 5, the 1st group and the 3rd group of whole survival rate is significantly higher than other each groups, and the liver and gallbladder syndrome death rate Substantially less than other each groups, but the 3rd group of terminal weight, rate of body weight gain and food ration are substantially less than other each groups, and feed system Number highest.5th group of terminal weight, rate of body weight gain and food ration are all remarkably higher than other each groups, but the liver and gallbladder syndrome death rate is also shown It writes and is higher than other each groups, while whole survival rate is lower than other each groups.2nd group upper advantageous in long speed compared with the 1st group, but liver and gallbladder are comprehensive The simulator sickness death rate is significantly higher than the 1st group, while whole survival rate is substantially less than the 1st group.
The result of comparative test illustrates that it is dead that feeding method of the invention can significantly reduce megathermal period Larimichthys crocea liver and gallbladder syndrome Rate is died, megathermal period Larimichthys crocea survival rate is improved, while long speed, remarkable in economical benefits can be taken into account.
The above, preferable specific embodiment only of the invention, but scope of protection of the present invention is not limited thereto, Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its Design is subject to equivalent substitution or change, should be covered by the scope of protection of the present invention.

Claims (10)

1. a kind of feeding method for improving Larimichthys crocea megathermal period survival rate, which is characterized in that start within 50-60 days before the megathermal period every Feeding volume is controlled the 70%-80% in the amount of being satiated with food by it, is fed in morning 5:00-6:00;It will be thrown daily during high temperature Amount control is fed in the 60%-70% for the amount of being satiated with food, is fed in morning 5:00-6:00, wherein before the megathermal period and the megathermal period Between, be once satiated with food in morning 5:00-6:00 every 10 days feeds to obtain the amount of being satiated with food.
2. a kind of feeding method for improving Larimichthys crocea megathermal period survival rate according to claim 1, which is characterized in that described Feeding time before megathermal period is 5 points of morning.
3. a kind of feeding method for improving Larimichthys crocea megathermal period survival rate according to claim 1, which is characterized in that described Feeding time during high temperature is 5 points of morning.
4. a kind of feeding method for improving Larimichthys crocea megathermal period survival rate according to claim 1, which is characterized in that in height Start within 50-60 days before the warm phase daily to control feeding volume the 80% of the amount of being satiated with food, and daily controls feeding volume during high temperature The 65% of the amount of being satiated with food.
5. a kind of feeding method for improving Larimichthys crocea megathermal period survival rate according to claim 1, which is characterized in that in height Start within 50-60 days before the warm phase daily to control feeding volume the 70% of the amount of being satiated with food, and daily controls feeding volume during high temperature The 70% of the amount of being satiated with food.
6. a kind of feeding method for improving Larimichthys crocea megathermal period survival rate according to claim 1, which is characterized in that in height Start within 50-60 days before the warm phase daily to control feeding volume the 75% of the amount of being satiated with food, and daily controls feeding volume during high temperature The 60% of the amount of being satiated with food.
7. a kind of feeding method for improving Larimichthys crocea megathermal period survival rate according to claim 1, which is characterized in that in height Start within 50-60 days before the warm phase daily to control feeding volume the 75% of the amount of being satiated with food, and daily controls feeding volume during high temperature The 65% of the amount of being satiated with food.
8. a kind of feeding method for improving Larimichthys crocea megathermal period survival rate according to claim 1, which is characterized in that high temperature 50-60 days before phase are the first tenday period of a month in May to late June.
9. a kind of feeding method for improving Larimichthys crocea megathermal period survival rate according to claim 1, which is characterized in that high temperature Period is late September early July-.
10. a kind of feeding method for improving Larimichthys crocea megathermal period survival rate according to claim 1, which is characterized in that adopt Feeding feed to be includes following raw material: 15-20 parts of imported fish meal, 15-20 parts of domestic fish meal, and U.S.'s chicken meal 10-15 parts, 6-10 parts of corn protein powder, 10-15 parts of dregs of beans, 15-18 parts of Strong flour, molten 2-4 parts of slurry of fish are digested, refined fish oil 2-4 parts, 2-4 parts of soya-bean oil, 2-4 parts of soyabean lecithin oil, 1.5-3 parts of calcium dihydrogen phosphate, 0.5-1 parts of vitamin premix, mineral salt It is 0.5-1.5 parts of pre-composition, 0.1-0.5 parts of choline chloride, 0.1-0.3 parts of natural carotenol, 0.1-0.3 parts of glycine betaine, anti-oxidant 0.01-0.05 parts of agent, 0.01-0.05 parts of mould inhibitor.
CN201811049797.9A 2018-09-10 2018-09-10 A kind of feeding method improving Larimichthys crocea megathermal period survival rate CN109006594A (en)

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