CN110631952A - Method for measuring tegillarca granosa fertility breeding value - Google Patents
Method for measuring tegillarca granosa fertility breeding value Download PDFInfo
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- CN110631952A CN110631952A CN201910896214.4A CN201910896214A CN110631952A CN 110631952 A CN110631952 A CN 110631952A CN 201910896214 A CN201910896214 A CN 201910896214A CN 110631952 A CN110631952 A CN 110631952A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/02—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/02—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume
- G01N2009/022—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume of solids
- G01N2009/026—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume of solids the volume being determined by amount of fluid displaced
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Abstract
The invention discloses a method for measuring the fertility and breeding value of Scapharca granosa, which adopts the technical scheme that the method comprises the following steps: firstly, weighing blood clam; step two, leveling by a balance; thirdly, measuring and calculating buoyancy; step four, recording data; step five, breeding calculation: the volume V of the measured object is obtained by the buoyancy of the object in the water being equal to the volume of the discharged watern＝VRow board＝FnAnd/((rho multiplied g)), and then calculating by using a breeding calculation formula, wherein the tegillarca granosa fertility value is equal to (1.85-M)n/Vn)/0.4*100. The method indirectly reflects the fullness of the tegillarca granosa by measuring the individual density of the tegillarca granosa, converts the individual density into the breeding value, and reflects the character of the individual fullness of the tegillarca granosa through the breeding value, so that the method has the effects of facilitating the performance of the character breeding of the tegillarca granosa, and not causing death of the tegillarca granosa in the measuring process but reflecting the fullness of the tegillarca granosa.
Description
Technical Field
The invention relates to the technical field of aquaculture, in particular to a method for measuring the fertility and breeding value of Scapharca granosa.
Background
Arca granosa belongs to the phylum mollusca, class Dictyotaceae, order Ledara, genus Arca. Traditional shellfish culture in China. China is distributed in various places along the sea, and the spawning period of 8-10 months is the peak season of production. In addition, the artificial breeding is carried out in Hebei, Shandong, Zhejiang, Fujian and Guangdong, and the yield is quite high. The blood clam is delicious and can be eaten fresh or vinasse, and can be made into dry products, the blood clam is bright red, and the edge of the meat has a color line similar to a gold wire. Arca granosa belongs to the phylum mollusca, class Dictyotaceae, order Ledara, genus Arca. Traditional shellfish culture in China. The name of the place: blood clam, blood snail and tile ridge clam.
In the character breeding research of the blood clam, the proportion (fullness) of the edible part weight in the total weight is a very important economic character. However, direct measurement of the tegillarca granosa trait requires removal of the edible portion from the shell, which can result in death of the subject, after which the subject is no longer suitable for use in the breeding process for the trait.
Through measurement of a large number of samples, the proportion of the weight of the edible part in the total weight is smaller when the density value of the whole blood clam is higher. Therefore, a method which can not cause death of the blood clam and can reflect the fullness of the blood clam is provided.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a method for measuring the tegillarca granosa fertility value, which indirectly reflects the tegillarca fertility by measuring the individual density of the tegillarca granosa, converts the individual density into the fertility value, reflects the character of the individual tegillarca fertility by the fertility value, is convenient for the character breeding work of the tegillarca granosa, and has the effects of not causing death of the tegillarca in the measuring process and reflecting the tegillarca fertility.
In order to achieve the purpose, the invention provides the following technical scheme: a method for measuring the tegillarca granosa fertility value comprises the following steps:
step one, weighing blood clam: the electronic balance weighs the measured objects one by one to obtain the mass M of the measured objectsnAnd recording one by one;
step two, leveling by a balance; firstly, placing a beaker filled with water on an electronic balance, then soaking a hollow measuring container in the beaker, connecting the upper end of the measuring container with an iron support through a connecting rope, suspending the measuring container in the water and not contacting the inner wall of the beaker, and then leveling the electronic balance;
thirdly, measuring and calculating buoyancy; taking the measuring container out of the beaker, then placing the measuring object in the measuring container, and placing the measuring container in the beaker again and immersing the measuring container in water, wherein the reading displayed on the electronic balance is the buoyancy Fn of the measuring object;
step four, data recording: repeating the second step and the third step until the buoyancy F of all the test objectsnRecording is completed one by one;
step five, breeding calculation: the volume V of the measured object is obtained by the buoyancy of the object in the water being equal to the volume of the discharged watern＝VRow board＝FnAnd/((rho multiplied g)), and then calculating by using a breeding calculation formula, wherein the tegillarca granosa fertility value is equal to (1.85-M)n/Vn) 0.4 x 100, namely obtaining the fattening value of the tegillarca granosa.
The invention is further configured to: in the first step, the surface of the object to be measured is wiped through absorbent paper before being weighed, and redundant moisture on the body surface of the object to be measured is removed.
The invention is further configured to: in the first step, the surface of the measured object is dried by a dryer before being weighed, excess moisture on the body surface of the measured object is removed, and the drying temperature of the dryer is not more than 30 ℃ in the drying process.
The invention is further configured to: in step two, the volume of water in the beaker is set to 500ml and is pure water.
The invention is further configured to: in the second step, the measuring container is arranged in a spherical structure and comprises two matched hemispherical shells which are arranged in a metal net structure.
The invention is further configured to: the two half ball shells are hinged to each other through a hinge, the other ends of the two half ball shells are detachably connected with each other in a buckle mode, and the two half ball shells are provided with connecting clamping grooves and connecting clamping blocks which are matched with each other.
The invention is further configured to: in the second step, the depth of the lower end of the connecting rope entering water is set to be 1cm, the connecting rope is set to be a thin nylon rope, and the upper end and the lower end of the connecting rope are fixedly connected with the iron support and the measuring container respectively in a binding mode.
The invention is further configured to: in step five, FnAs can be seen from the data recorded in step four, ρ is the density of water, g is 9.8M/s2, MnAnd (4) knowing the data recorded in the step one.
In conclusion, the invention has the following beneficial effects:
the method has the advantages that the fat content of the blood clam is indirectly reflected by measuring the individual density of the blood clam, the individual density is converted into a breeding value, the character of the individual fat content is reflected by the breeding value, the character breeding work of the blood clam is facilitated, the death of the blood clam can not be caused in the measuring process, and the fat content can also be reflected.
Drawings
Fig. 1 is a process block diagram of a first embodiment of the invention.
Fig. 2 is a schematic structural diagram of a first embodiment of the present invention.
FIG. 3 is a schematic view showing the structure of the measuring vessel in FIG. 2.
Reference numerals: 1. an electronic balance; 2. a beaker; 3. a measuring container; 4. connecting ropes; 5. an iron stand; 6. a hemispherical shell; 7. a hinge; 8. a connecting clamping groove; 9. and connecting the clamping blocks.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The first embodiment discloses a method for measuring the tegillarca granosa fertility value, as shown in fig. 1 to 3, comprising the following steps:
step one, weighing blood clam: the electronic balance 1 weighs the measured objects one by one to obtain the mass Mn of the measured objects and records the mass Mn one by one; before the measurement object is weighed, the surface of the measurement object is wiped through absorbent paper, redundant moisture on the body surface of the measurement object is removed, and the accuracy of the quality measurement of the measurement object can be ensured by removing the redundant moisture on the surface through the absorbent paper;
step two, leveling by a balance; firstly, placing a beaker 2 filled with water on an electronic balance 1, then soaking a hollow measuring container 3 in the beaker 2, connecting the upper end of the measuring container 3 with an iron support 5 through a connecting rope 4, suspending the measuring container 3 in the water without contacting with the inner wall of the beaker 2, and then leveling the electronic balance 1; the volume of water in the beaker 2 is set to be 500ml and is pure water, and the pure water is set to be convenient for observation in the measurement process of a measurement object; the measuring container 3 is arranged in a spherical structure, the measuring container 3 comprises two matched hemispherical shells 6, the two hemispherical shells 6 are arranged in a metal net structure, the measuring container 3 is used for placing a measured object, and the metal net structure is arranged so as to be convenient for measuring and calculating the volume of the measured object and simultaneously prevent the measuring container 3 from being easily damaged and prolong the service life of the measuring container; one ends of the two hemispherical shells 6 are hinged with each other through a hinge 7, the other ends of the two hemispherical shells 6 are detachably connected with each other through a buckle, and the two hemispherical shells 6 are provided with a connecting clamping groove 8 and a connecting clamping block 9 which are matched with each other, so that a measured object can be conveniently placed in the measuring container 3; the depth of the lower end of the connecting rope 4 entering water is set to be 1cm, the connecting rope 4 is set to be a thin nylon rope, and the upper end and the lower end of the connecting rope 4 are fixedly connected with the iron support 5 and the measuring container 3 in a binding mode respectively;
thirdly, measuring and calculating buoyancy; taking the measuring container 3 out of the beaker 2, then placing the measuring object in the measuring container 3, and placing the measuring container 3 in the beaker 2 again and immersing the measuring container in water, wherein the reading displayed on the electronic balance 1 is the buoyancy Fn of the measuring object;
step four, data recording: repeating the second step and the third step until the buoyancy Fn of all the test objects is recorded one by one;
step five, breeding calculation: the buoyancy of the object in the water is equal to the volume of the drained water, so that the volume Vn of a measured object is obtained, the volume Vn is V row Fn/(rho multiplied by g), and then the volume Vn is calculated through a breeding calculation formula, so that the tegillarca granosa fertility and breeding value is equal to (1.85-Mn/Vn)/0.4 x 100, and the tegillarca granosa fertility and breeding value is obtained; fn is known from the data recorded in the fourth step, rho is the density of water, g is 9.8m/s2, Mn is known from the data recorded in the first step, and 100 in the breeding measurement and calculation formula is used for converting the measurement and calculation result into a value range of 0-100 so as to facilitate data viewing.
The following is a measurement data table of the measured objects in the breeding process:
TABLE 1
The total volume density in table 1 is total weight/total volume, and as can be seen from table 1, when the total density value is higher, the proportion of the meat weight in the total weight is smaller, it is also confirmed that the plumpness of the tegillarca granosa can be indirectly reflected by measuring the individual density of the tegillarca granosa, and the individual density is converted into a breeding value, and then the characters of the individual plumpness are reflected by the breeding value.
The second embodiment is different from the first embodiment in that: in step one, the surface of the measured object is dried through the dryer before being weighed, redundant moisture on the body surface of the measured object is removed, the drying temperature of the dryer in the drying process is not more than 30 ℃, the measured object is dried through the dryer, manual wiping one by one is avoided in the first embodiment, the accuracy of quality measurement of the measured object is guaranteed, and the working efficiency of removing the redundant moisture on the body surface of the measured object can be improved.
In conclusion, the invention has the following beneficial effects:
the method has the advantages that the fat content of the blood clam is indirectly reflected by measuring the individual density of the blood clam, the individual density is converted into a breeding value, the character of the individual fat content is reflected by the breeding value, the character breeding work of the blood clam is facilitated, the death of the blood clam can not be caused in the measuring process, and the fat content can also be reflected.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the design concept of the present invention should be included in the scope of the present invention.
Claims (8)
1. A method for measuring the tegillarca granosa fertility value is characterized by comprising the following steps:
step one, weighing blood clam: the electronic balance (1) weighs the measured objects one by one to obtain the mass Mn of the measured objects and records the mass Mn one by one;
step two, leveling by a balance; firstly, placing a beaker (2) filled with water on an electronic balance (1), then soaking a hollow measuring container (3) in the beaker (2), connecting the upper end of the measuring container (3) with an iron stand (5) through a connecting rope (4), suspending the measuring container (3) in the water and not contacting with the inner wall of the beaker (2), and then leveling the electronic balance (1);
thirdly, measuring and calculating buoyancy; taking the measuring container (3) out of the beaker (2), then placing the measuring object in the measuring container (3), and placing the measuring container (3) in the beaker (2) again and immersing the measuring container in water, wherein the reading displayed on the electronic balance (1) is the buoyancy Fn of the measuring object;
step four, data recording: repeating the second step and the third step until the buoyancy Fn of all the test objects is recorded one by one;
step five, breeding calculation: and (3) obtaining the volume Vn of the measured object as V row Fn/(rho multiplied by g) by the buoyancy of the object in the water being equal to the volume of the discharged water, and calculating by a breeding calculation formula, wherein the tegillarca granosa fertility breeding value is equal to (1.85-Mn/Vn)/0.4 x 100, and the tegillarca granosa fertility breeding value is obtained.
2. The method for measuring the tegillarca granosa fertility value according to claim 1, wherein in the first step, the surface of the object to be measured is wiped by absorbent paper before being weighed, so as to remove excessive moisture on the surface of the object.
3. The method for measuring the tegillarca granosa fertility value according to claim 1, wherein in the first step, the surface of the object to be measured is dried by a dryer before being weighed, excess moisture on the surface of the object is removed, and the drying temperature of the dryer is not more than 30 ℃ in the drying process.
4. The method for measuring the tegillarca granosa fertility value according to claim 1, wherein in the second step, the volume of water in the beaker (2) is set to be 500ml and is pure water.
5. The method for determining the tegillarca granosa fertility value according to claim 1, wherein in the second step, the determination container (3) is arranged in a spherical structure, the determination container (3) comprises two semispherical shells (6) which are matched with each other, and the two semispherical shells (6) are arranged in a metal mesh structure.
6. The method for measuring the tegillarca granosa fertility value according to claim 5, wherein one end of each of the two half-spherical shells (6) is hinged with each other through a hinge (7), the other end of each of the two half-spherical shells is detachably connected with each other through a buckle, and the two half-spherical shells (6) are provided with a connecting clamping groove (8) and a connecting clamping block (9) which are matched with each other.
7. The method for measuring the tegillarca granosa fertility value according to claim 1, wherein in the second step, the depth of the lower end of the connecting rope (4) entering water is set to be 1cm, the connecting rope (4) is set to be a thin nylon rope, and the upper end and the lower end of the connecting rope (4) are fixedly connected with the iron support (5) and the measuring container (3) respectively in a binding mode.
8. The method for determining the tegillarca granosa fertility value according to claim 1, wherein in the fifth step, Fn is known from the data recorded in the fourth step, ρ is the density of water, g is 9.8m/s2, and Mn is known from the data recorded in the first step.
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2019
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| CN103604466A (en) * | 2013-11-27 | 2014-02-26 | 中国科学院海洋研究所 | Method for measuring size and weight of shell |
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