CN104950091A - Method for quickly determining intramuscular fat content of fattening duroc landrace big white - Google Patents
Method for quickly determining intramuscular fat content of fattening duroc landrace big white Download PDFInfo
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- CN104950091A CN104950091A CN201510334033.4A CN201510334033A CN104950091A CN 104950091 A CN104950091 A CN 104950091A CN 201510334033 A CN201510334033 A CN 201510334033A CN 104950091 A CN104950091 A CN 104950091A
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Abstract
For the situation that intramuscular fat content is an important factor for influencing pork quality and flavor and an efficient and rapid living body determination method does not exist, the invention discloses a method for quickly determining intramuscular fat content of fattening duroc landrace big white. The method comprises the following steps: firstly, establishing a regression equation between back-fat thickness and intramuscular fat content of the fattening duroc landrace big white through the actual measured data; then, determining back-fat thickness of a living body to be measured, treating through the regression equation, and calculating the intramuscular fat content of the live pig. According to the invention, the regression equation between back-fat thickness and intramuscular fat content is established and is input into an intelligent processing device such as a mobile phone or a computer through one procedure, and then the intramuscular fat content is quickly estimated by determining back-fat thickness, so that a basis is provided for the fact that pigs become full grown and are ready for slaughter when the pigs are provided with proper intramuscular fat content and the pork quality is improved. Moreover, the technical scheme is low in implementation cost and quick determination is realized.
Description
Technical field
The present invention relates to farming animals cultivation field, be specifically related to a kind of method of Fast Measurement DLY three way cross growing and fattening pigs intramuscular fat content.
Background technology
Meat is the important sources of human intake's albumen, is one of the important food materials affecting growth in humans, growth.Pork is as the highest carnivorous material of current apparent consumption, and the social impact caused of verifying of quantity and the product of its supply can not be despised.At present, China's pork consumption figure accounts for the 65%-70% of meat aggregate consumption, dominate in consumption of meat.Along with improving constantly of living standard, people are changed by the requirement of the requirement of measuring to matter gradually to the demand of pork, but the general bad of pork on home market, yellowish pink, mouthfeel and local flavor are also very poor, do not get consumer reception.Intramuscular fat is fine and tender taste succulence and delicious basis, and the edible quality of its content on pork has very large impact.Pork intramuscular fat content is high, then Meat Tenderness increases, and local flavor, succulence be the continuative improvement with the increase of intramuscular fat content also.Rational intramuscular fat content for the local flavor of pork and nutritive value very crucial.Find after deliberation, intramuscular fat content can make the delicious succulence of pork, good mouthfeel 3.0 ~ 4.0% time, lower than 2.5% time meat then stiff dull, content is crossed at most can be unfavorable to health.
China delivers the age in days of butchering for sale for pig and can only empirically judge, traditional raises pigs, and growing and fattening pigs body weight generally reaches 90-130 kilogram, can deliver for sale when the age is about 5.5-7 month (about 165-210 days).Pig marketing time follows the kind of pig, the feed quality of feeding, and the management of poultry raiser to pig has much relations.If the kind of pig is good, feeding feed stuff quality better, feeding and management suitable, so can deliver for sale for 6 months.Sometimes also will specifically according to the requirement of buyer agent.When market are good, delivering body weight for sale can be larger.About the suitable slaughter weight of growing and fattening pigs, shown by many data have.But mostly the method taked is from body weight, the speed of growth, the technical indicators such as the price of deed carry out evaluating.These methods just give the regulation of matter to pig slaughter weight, and are not determined by the experiment of science amount, and then point out the rationality of its economic effect, the dressing percentage of growing and fattening pigs is not considered yet, lean meat percentage, fat thickness, the indexs such as intramuscular fat content and meat quality, yellowish pink, local flavor.Intramuscular fat content detects and sample after pig is butchered and carries out, and like this owing to being subject to the impact of pig kind, rearing conditions and changes in market demand, easily causes butchering rear intramuscular fat content and does not reach requirement, and cannot save.At present to the Aloka system of the mainly Japanese Aloka company research and development that live hog intramuscular fat content measures, this system can measure live body back fat, intramuscular fat content, eye muscle area estimate lean meat percentage.But this system equipment volume is comparatively large, uses inconvenience; And expensive, a set of quotation 200,000 yuan, only some core breeding stations use abroad at present, and are not suitable for common middle-size and small-size pig farm onsite application.
Summary of the invention
Object of the present invention is just to provide a kind of method of Fast Measurement DLY three way cross growing and fattening pigs intramuscular fat content, and it is simple to operate, can estimate the content of live hog intramuscular fat fast, and delivering for sale to slaughter for live hog provides foundation, improves meat quality.
For achieving the above object, the present invention implements by the following technical solutions:
A method for Fast Measurement DLY three way cross growing and fattening pigs intramuscular fat content, concrete is operating as: first set up the regression equation between the back-fat thickness of DLY three way cross growing and fattening pigs and intramuscular fat content; Secondly measure the back-fat thickness of live hog to be detected and utilize above-mentioned regression equation to process, drawing the intramuscular fat content of live hog; Between back-fat thickness and intramuscular fat content, the method for building up of regression equation is: live hog measures its back-fat thickness respectively before slaughtering, slaughter its intramuscular fat content of rear sampling and measuring, the data separate fitting software of mensuration is carried out matching and draw regression equation between thickness of fat and intramuscular fat content.
Concrete is operating as: adopt the U.S. to transport high pig back-fat thickness analyzer and measure thickness of fat.The position that thickness of fat measures is to rib place apart from last of dorsal line 5cm.Slaughter that sampling in the operation of its intramuscular fat content of rear sampling and measuring chooses for pig longissimus dorsi muscle meat sample, in Soxhlet extraction device, measure intramuscular fat content.By in regression equation programming write treating apparatus, the back of the body mark thickness input processing device of mensuration is carried out process and draws intramuscular fat content.
Found by test of long duration, stronger genetic correlation is had between back-fat thickness and intramuscular fat, therefore, by setting up the regression equation of back-fat thickness and intramuscular fat content in the present invention, and by this regression equation write Intelligent treatment device, as mobile phone or computer, and then estimate intramuscular fat content by measuring back-fat thickness, deliver for sale to slaughter for pig and foundation is provided, improve the quality of pork.Meanwhile, the implementation cost of technique scheme is low, measures fast.
Accompanying drawing explanation
Fig. 1 is the schematic diagram adopting Software Create regression equation;
Fig. 2 is the schematic diagram inputting back-fat thickness technology intramuscular fat content in APP software.
Embodiment
In order to make objects and advantages of the present invention clearly understand, below in conjunction with embodiment, the present invention is specifically described.Should be appreciated that following word only in order to describe one or more concrete embodiments of the present invention, considered critical is not carried out to the protection domain that the present invention specifically asks.
For DLY ternary pigs, the present invention is described in detail below: choose 40 pigs (only providing 40 determination datas here), in 155 ~ 170 days ages of pig, pig body weight is 95 ~ 110kg, is divided into A, B two groups, A group 30, B group 10 performs following operation:
Step 1: adopt the U.S. to transport the back-fat thickness that high pig back-fat thickness analyzer measures A group each live hog before butchering, locating as: pig, last is about 5cm place to rib apart from dorsal line; Each pig is numbered and records the corresponding back-fat thickness data recorded;
Step 2: until surveyed back-fat thickness pig butcher after, get 10th ~ 11 pairs, its longissimus dorsi muscle stage casing intercostal core boundary between muscles sample, cold fresh preservation, fast got meat belt transect is gone back to laboratory to process, the Soxhlet extraction device intramuscular fat content measured in meat sample is adopted to go forward side by side line item, as shown in table 1:
The back-fat thickness of table 1 A group pig and intramuscular fat content
| Numbering | A1 | A2 | A3 | A4 | A5 | A6 | A7 | A8 | A9 | A10 |
| Back-fat thickness (cm) | 7 | 14 | 9 | 15 | 11 | 12 | 12 | 14 | 15 | 12 |
| Intramuscular fat content (%) | 1.10 | 6.03 | 1.49 | 7.00 | 3.07 | 3.69 | 4.05 | 6.34 | 7.13 | 3.94 |
[0017]
| numbering | a11 | a12 | a13 | a14 | a15 | a16 | a17 | a18 | a19 | a20 |
| back-fat thickness (cm) | 9 | 12 | 12 | 11 | 7 | 9 | 16 | 14 | 8 | 9 |
| intramuscular fat content (%) | 1.36 | 3.66 | 3.51 | 2.96 | 1.10 | 1.56 | 7.98 | 6.37 | 1.36 | 1.42 |
| numbering | a21 | a22 | a23 | a24 | a25 | a26 | a27 | a28 | a29 | a30 |
| back-fat thickness (cm) | 16 | 13 | 9 | 10 | 12 | 8 | 13 | 16 | 4.01 | 16 |
| intramuscular fat content (%) | 8.34 | 4.05 | 1.43 | 2.28 | 3.28 | 1.20 | 4.24 | 7.47 | 5.88 | 8.03 |
| numbering | .。。 | 。。。 | 。。。 | 。。。 | 。。。 | 。。。 | 。。。 | 。。。 | 。。。 | a102 |
| back-fat thickness (cm) | .。。 | 。。。 | 。。。 | 。。。 | 。。。 | 。。。 | 。。。 | 。。。 | 。。。 | |
| intramuscular fat content (%) | .。。 | 。。。 | 。。。 | 。。。 | 。。。 | 。。。 | 。。。 | 。。。 | 。。。 |
Step 3: first utilize data analysis process in EXCEL software his-and-hers watches 1, then adopt Correlative data analysis software to carry out data analysis, the Regression Equations between back-fat thickness and intramuscular fat content is set up in matching, and gained regression equation is:
Y＝3.7757×10
-3×X
2.7650(7mm≤X≤16mm)
(wherein Y intramuscular fat content; X is back-fat thickness)
Step 4: according to back-fat thickness and the corresponding intramuscular fat content data thereof of the time-and-motion study B group DLY ternary pigs in step 1,2, adopt the curve in step 3 to carry out analyzing and processing the back of the body mark thickness data recorded and draw intramuscular fat content, the intramuscular fat content drawn by software analysis and surname extraction are tested the actual intramuscular fat content that records and are compared, as shown in table 2, the accuracy of Regression Equations in verification step 3, through inspection, rate of accuracy reached 95%, error is in 0.181.Curve map between the actual measurement of B group and predicted value is as Fig. 1.
The actual measurement of table 2:B group data is compared with prediction
Through data and related analysis software, you find analysis: when the back-fat thickness of pig is at 7-16mm, and the relation coefficient of determination R between actual measurement intramuscular fat content and prediction intramuscular fat content is 0.833;
When the back-fat thickness of pig is at 8-14mm, coefficient of determination R is 0.986.This illustrates that this forecasting software in the present invention is predicting intramuscular fat content more accurate back-fat thickness scope by pig live body back-fat thickness is 8-14mm.
Step 5: regression equation programming obtained above is incorporated in software, Mobile phone app software is obtained after finally encapsulation debugging, this software is applicable to Android system, can be installed in mobile phone or computer, test and debugging software, and progressively improving software to improve the accuracy that predicts the outcome, software puts goods on the market use the most at last.If open this software in mobile phone, as long as by measured pig live body back-fat thickness data Input Software interface input box, click " calculating " and just can obtain corresponding intramuscular fat percentage composition, click " emptying " can clear data, next data can be inputted subsequently calculate, as shown in Figure 2.Illustrate, be 8-14mm by this software prediction DLY live body intramuscular fat content best back-fat thickness scope used, the intramuscular fat content predicted within the scope of this is more accurate herein.
The present invention by carrying out living body measurement to thickness of fat, can dope its intramuscular fat content, can determine pork pig marketing period, the pork that, local flavor of fine quality with article of manufacture is good before the growing and fattening pigs of DLY ternary are delivered for sale.Tradition is avoided blindly to butcher existing defect.Simultaneously, the present invention by software simulating analyzing and processing, only needs a thickness of fat analyzer and smart mobile phone, easy to carry, use simple, measure quick, cost is low, be not only applicable to large―scale hoggery, be also applicable to middle-size and small-size pig farm and professional raising farmer.
The above is only the preferred embodiment of the present invention; should be understood that; for those skilled in the art; to know in the present invention after contents; under the premise without departing from the principles of the invention; can also make some equal conversion to it and substitute, these convert on an equal basis and substitute and also should be considered as belonging to protection scope of the present invention.
Claims (5)
1. a method for Fast Measurement DLY three way cross growing and fattening pigs intramuscular fat content, concrete is operating as: first set up the regression equation between the back-fat thickness of DLY three way cross growing and fattening pigs and intramuscular fat content; Secondly measure the back-fat thickness of live hog to be detected and utilize above-mentioned regression equation to process, drawing the intramuscular fat content of live hog;
Between back-fat thickness and intramuscular fat content, the method for building up of regression equation is: live hog measures its back-fat thickness respectively before slaughtering, slaughter its intramuscular fat content of rear sampling and measuring, the data separate fitting software of mensuration is carried out matching and draw regression equation between thickness of fat and intramuscular fat content.
2. the method for Fast Measurement DLY three way cross growing and fattening pigs intramuscular fat content according to claim 1, is characterized in that: the position that thickness of fat measures is to rib place apart from last of dorsal line 5cm.
3. the method for Fast Measurement DLY three way cross growing and fattening pigs intramuscular fat content according to claim 1, is characterized in that: slaughter that sampling in the operation of its intramuscular fat content of rear sampling and measuring chooses for 10th ~ 11 pairs, pig longissimus dorsi muscle stage casing entrecote sample.
4. the method for the Fast Measurement DLY three way cross growing and fattening pigs intramuscular fat content according to claim 1 or 2 or 3, is characterized in that: adopt the U.S. to transport high pig back-fat thickness analyzer and measure thickness of fat.
5. the method for the Fast Measurement DLY three way cross growing and fattening pigs intramuscular fat content according to claim 1 or 2 or 3, it is characterized in that: by regression equation programming write treating apparatus, the back of the body mark thickness input processing device of mensuration is carried out process and draws intramuscular fat content.
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| CN105284662A (en) * | 2015-12-10 | 2016-02-03 | 河南省农业科学院畜牧兽医研究所 | Living body measuring method of high-grade beef weight in cattle |
| CN109009228A (en) * | 2018-08-28 | 2018-12-18 | 扬州大学 | A method of poultry abdominal fat content is measured using ultrasonic technology |
| CN110264464A (en) * | 2019-06-26 | 2019-09-20 | 西北农林科技大学 | A kind of beef cattle intramuscular fat content prediction model, its construction method and application |
| CN110361291A (en) * | 2019-08-26 | 2019-10-22 | 山东省农业科学院畜牧兽医研究所 | A method of utilizing moisture content rapid evaluation pork intramuscular fat content |
| CN110530477A (en) * | 2019-09-28 | 2019-12-03 | 四川农业大学 | Replacement gilt weight predictor method |
| CN111990331A (en) * | 2020-08-05 | 2020-11-27 | 南京农业大学 | Living body breeding method for pork streaky pork |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105284662A (en) * | 2015-12-10 | 2016-02-03 | 河南省农业科学院畜牧兽医研究所 | Living body measuring method of high-grade beef weight in cattle |
| CN109009228A (en) * | 2018-08-28 | 2018-12-18 | 扬州大学 | A method of poultry abdominal fat content is measured using ultrasonic technology |
| CN110264464A (en) * | 2019-06-26 | 2019-09-20 | 西北农林科技大学 | A kind of beef cattle intramuscular fat content prediction model, its construction method and application |
| CN110361291A (en) * | 2019-08-26 | 2019-10-22 | 山东省农业科学院畜牧兽医研究所 | A method of utilizing moisture content rapid evaluation pork intramuscular fat content |
| CN110530477A (en) * | 2019-09-28 | 2019-12-03 | 四川农业大学 | Replacement gilt weight predictor method |
| CN110530477B (en) * | 2019-09-28 | 2021-05-18 | 四川农业大学 | Replacement gilt weight estimation method |
| CN111990331A (en) * | 2020-08-05 | 2020-11-27 | 南京农业大学 | Living body breeding method for pork streaky pork |
| CN111990331B (en) * | 2020-08-05 | 2022-06-10 | 南京农业大学 | Living body breeding method for pork streaky pork |
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Application publication date: 20150930 |