CN103583468A - Method for rapidly evaluating corn DDGS fowl metabolic energy through physicochemical indexes - Google Patents
Method for rapidly evaluating corn DDGS fowl metabolic energy through physicochemical indexes Download PDFInfo
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Abstract
The invention discloses a method for rapidly evaluating corn DDGS fowl metabolic energy through the physicochemical indexes. The method includes the steps of carrying out tests to determine CFs, EE, GE and actual measurement metabolic energy values of a plurality of corn DDGS samples, carrying out regression analysis on the determined data, and building an optimal regression model for rapidly evaluating the fowl metabolic energy. According to the method, the corn DDGS fowl metabolic energy can be accurately predicted through the built mathematic model, the model can be updated in real time along with the newly increased DDGS samples, and therefore the fowl feed matching accuracy can be better guaranteed.
Description
Technical field
The present invention relates to a kind of method of its poultry metabolic energy of corn DDGS physical and chemical index rapid evaluation of passing through, belong to field of feed.
Background technology
In recent years, international energy outstanding problem, crude oil price is constantly soaring, finds and utilizes renewable resources just to become the inevitable choice that solves world oil crisis problem.Therefore the research and development of alcohol fuel launch and have obtained rapidly good effect in developed countries such as America and Europes.Meanwhile, aquaculture runs into the shortage of an another world difficult problem-protein resource, probes into unconventional protein feeds raw material extremely urgent.To be corn produce the accessory substance of ethanol through fermentation to corn DDGS, has high protein, high effective phosphorus, low phytate phosphorus, homovitamin and without the feature of antinutritional factor, as a kind of protein feeds raw material of high-quality, is widely used in feed industry.The metabolic energy of corn DDGS has larger range of variation because of the difference of corn grade, planting area, processing technology etc., in production practices according to fixed numbers component design in database, tend to cause joined fodder energy too high or not enough, affect the nutritive value of feed.
Existing notification number is the patent of invention that " CN102742745B ", denomination of invention are " a kind of by the method for physical and chemical index rapid evaluation corn poultry metabolic energy ", and it is by measuring corn neutral detergent fiber value (NDF), Maize Test Weight (VW
1) and the rear unit weight (VW of corn kernel pulverizing
2) calculate corn metabolic energy AEM value.Its test subject is corn, and predicted value and measured value differ larger.
Therefore, because the defect that the computational methods of above-mentioned existing corn poultry metabolic energy exist, the inventor is research and innovation in addition actively, to developing a kind of new quick, easy, the method for accurately evaluating corn DDGS poultry metabolic energy that can apply aborning, for realizing animal, precisely cultivation and the efficient utilization of feedstuff are significant.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of by the method for physical and chemical index rapid evaluation corn DDGS poultry metabolic energy; The present invention is intended to by measuring simple physical and chemical index, corn DDGS poultry metabolic energy be evaluated, and improves the accuracy of feed preparation.
The present invention is achieved in that by measuring crude protein (CF) in some corn DDGS samples, crude fat (EE), total energy (GE) and actual measurement metabolizable energy value, and data are carried out to regression analysis, and the mathematical model of its poultry metabolic energy of structure rapid evaluation is as follows:
AME(MJ/Kg)=-0.5621CF+0.2420EE+0.8014GE-4.2342(R
2=0.896)
A kind of by the method for physical and chemical index rapid evaluation corn DDGS poultry metabolic energy: according to GB/T6432, to measure corn DDGS crude protein content, by GB/T6433, measure its crude fat content, utilize energy instrument to measure total energy value, will record mathematical model AME (MJ/Kg)=-0.5621CF+0.2420EE+0.8014GE-4.2342 (R of CF value, EE value, GE value substitution structure
2=0.896), get final product to obtain corn DDGS metabolizable energy value (AME).
The present invention compared with prior art has obvious advantage and beneficial effect.By technique scheme, result of use of the present invention is: as a kind of method of rapid evaluation corn DDGS poultry metabolic energy, be applicable to the rapid evaluation of corn DDGS poultry metabolic energy in production practices, can improve the accuracy of feed formula preparation, for animal precisely cultivates and provides safeguard.
Mensuration main body of the present invention is corn DDGS, namely the accessory substance after corn fermentation.By principal component analysis, stepwise regression analysis and path analysis, determine the optimum regression model of the apparent metabolic energy of prediction corn DDGS poultry, predicted value and measured value differ little than existing patent (CN102742745B), and the determination coefficient of equation is higher.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of specification, and for above and other object of the present invention, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, describe in detail.
Embodiment
For further setting forth the present invention, reach technological means and the effect that predetermined goal of the invention is taked, with preferred embodiment, carry out a kind of its embodiment of method, step, feature and the effect thereof of physical and chemical index rapid evaluation corn DDGS poultry metabolic energy passed through to proposing according to the present invention below, be described in detail as follows.
Embodiment 1
1, gather five kinds of corn DDGS samples, measure respectively wherein crude protein (CF), crude fat (EE), total energy (GE), by in measured result substitution model AME (MJ/Kg)=-0.5621CF+0.2420EE+0.8014GE-4.2342, can obtain the predicted value (in Table 1) of corn DDGS metabolic energy.
Degree of agreement for evaluation predicted value and corn DDGS metabolic energy actual value, measure by the following method the metabolizable energy value of five kinds of corn DDGSs: select 2.5(± 0.2) the blue brown shell egg kind cock in sea more than age, 18 weeks of Kg, being placed in the indoor single cage list of ring control metabolic determination only raises, 18 ℃~27 ℃ of indoor temperatures, humidity 40%~60%, intensity of illumination 10lx~20lx, natural lighting or artificial lighting; Light application time is 16h/d.Non-experimental period the laying hen full price ration formulation of feeding, freely drink water, Control experiment chicken body weight is in prescribed limit.Employing random experiment design, is divided into 5 groups at random by test chicken, every group of 12 repetitions, and each repeats 1 chicken.Fasting after chicken adapts to 7 days, freely drinks water, and continuous emptying 48h raises by force the DDGS sample that 30g pulverizes afterwards, collects continuously 48h excreta.Respectively analytical unit quality corn DDGS sample and corresponding excremental can value, the difference of the two is the measured value of corn DDGS metabolic energy.
2. result of the test
Result of the test shows, corn DDGS metabolic energy predicted value and measured value difference are less, predict the outcome accurately (table 1) of forecast model.
Table 1 corn DDGS sample metabolic energy measured value and predicted value contrast (MJ/Kg)
Embodiment 2
1, gather three kinds of corn DDGS samples, measure respectively wherein crude protein (CF), crude fat (EE), total energy (GE), by in measured result substitution model AME (MJ/Kg)=-0.5621CF+0.2420EE+0.8014GE-4.2342, can obtain the predicted value of corn DDGS metabolic energy.(in Table 2).
Table 2 corn DDGS sample metabolic energy measured value and predicted value contrast (MJ/Kg)
Degree of agreement for evaluation predicted value and corn DDGS metabolic energy actual value, measure by the following method the metabolizable energy value of five kinds of corn DDGSs: select the healthy AA meat chick that 28 age in days body weight are close, layer cage raised, in house, temperature is controlled in strict accordance with < < and is liked to pull out commercial broiler flocks feeding and management handbook > > execution increasingly, examination chicken free choice feeding and drinking-water, 24h illumination.Examination chicken is divided into 1 basic ration group and 3 separate sources corn DDGS alternate sets at random, basic ration composition and trophic level are in Table 3, alternate sets 20% corn DDGS+80% basic ration of feeding, all daily rations all add TiO2 in 0.4% ratio and make external source indicator, fully mix rear cold rolling granulation.Every experimental group arranges 8 repetitions, and each repeats 8 chickens.Metabolic test is in 28 ages in days, and 28-30 age in days, for raising the phase in advance, makes to try chicken adequacy test environment and daily ration, goes on a hunger strike after 12h, just enters and tries the phase, take and repeats to collect the whole excretas of 32-35 age in days as unit.By following formula, obtain the measured value of the apparent metabolic energy of corn DDGS.
Formula: feedstuff metabolisable energy (AME)=feed total energy * feed total energy metabolic rate
Corn DDGS metabolizable energy value (MJ/Kg)=A-100 * (A-B)/K;
A is the apparent metabolizable energy value of basic ration;
B is the apparent metabolizable energy value of mixed ration;
K is the percentage that corn DDGS substitutes basic ration.
Table 328-35 daily ration basic ration forms and trophic level (air bells dry basis)
2. result of the test
Result of the test shows, corn DDGS metabolic energy predicted value and measured value difference are less, predict the outcome accurately (table 2) of forecast model.
In sum, Domestic Scientific Research institutes and enterprise laboratory all can be measured accurately to CF, EE, GE, the present invention only need measure raw fiber (CF), crude fat (EE) and total energy (GE) and can predict fast the apparent metabolic energy of corn DDGS poultry, avoid Animal experiment, reduce costs, the shortening cycle, significant to the fast detecting of critical in poultry feed formulation, feed.
The above, it is only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet not in order to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be the content that does not depart from technical solution of the present invention, foundation technical spirit of the present invention is to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (1)
1. one kind is passed through the method for physical and chemical index rapid evaluation corn DDGS poultry metabolic energy, it is characterized in that it realizes by following steps: according to standard GB/T/T6432, measure crude protein content in corn DDGS, by standard GB/T/T6433, measure crude fat content in corn DDGS, utilize energy instrument to measure total energy value, by the mathematical model that in the corn DDGS recording, crude fiber content CF value, crude fat content EE value, the substitution of total energy GE value build, metabolizable energy value AME (MJ/Kg)=-0.5621CF+0.2420EE+0.8014GE-4.2342, its determination coefficient R
2=0.896, can draw corn DDGS metabolizable energy value AME.
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Cited By (3)
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CN104155418A (en) * | 2014-08-27 | 2014-11-19 | 山东农业大学 | Method for measuring corn poultry metabolizable energy through in-vitro enzyme digestion |
CN104792927A (en) * | 2015-04-13 | 2015-07-22 | 广东温氏食品集团股份有限公司 | Method for evaluating effective energy value of yellow-feathered broilers fast by utilizing chemical constituents of soybean meal |
CN111763710A (en) * | 2020-07-20 | 2020-10-13 | 华南农业大学 | Method for evaluating goose feed metabolism energy by using enzymatic hydrolysis energy method |
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CN102715380A (en) * | 2012-07-09 | 2012-10-10 | 山东农业大学 | Method for determining poultry metabolizable energy of corn quickly by utilizing in vitro digestion method |
CN102742745A (en) * | 2012-07-21 | 2012-10-24 | 山东农业大学 | Method for fast evaluating corn poultry metabolic energy through physicochemical indexes |
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CN102715380A (en) * | 2012-07-09 | 2012-10-10 | 山东农业大学 | Method for determining poultry metabolizable energy of corn quickly by utilizing in vitro digestion method |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104155418A (en) * | 2014-08-27 | 2014-11-19 | 山东农业大学 | Method for measuring corn poultry metabolizable energy through in-vitro enzyme digestion |
CN104792927A (en) * | 2015-04-13 | 2015-07-22 | 广东温氏食品集团股份有限公司 | Method for evaluating effective energy value of yellow-feathered broilers fast by utilizing chemical constituents of soybean meal |
CN111763710A (en) * | 2020-07-20 | 2020-10-13 | 华南农业大学 | Method for evaluating goose feed metabolism energy by using enzymatic hydrolysis energy method |
CN111763710B (en) * | 2020-07-20 | 2021-08-06 | 华南农业大学 | Method for evaluating goose feed metabolism energy by using enzymatic hydrolysis energy method |
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