CN102662030B - Nutrition quality evaluation method of cow essence supplemented material - Google Patents
Nutrition quality evaluation method of cow essence supplemented material Download PDFInfo
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- CN102662030B CN102662030B CN201210137540.5A CN201210137540A CN102662030B CN 102662030 B CN102662030 B CN 102662030B CN 201210137540 A CN201210137540 A CN 201210137540A CN 102662030 B CN102662030 B CN 102662030B
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Abstract
The invention discloses a nutrition quality evaluation method of a cow essence supplemented material, which determines the conventional nutritional ingredients of an essence supplemented material through a national standard method. The samples of the essence supplemented material and coarse fodder are mixed uniformly in the ratio of 1;1; a mixed sample comprising a 200mg sample of the essence supplemented material and a 200mg sample of the coarse fodder which are respectively and accurately weighed and the sample of the coarse fodder are adopted as culture substrates to carry out in vitro culture, and the net gas yield of the culture substrate for 24 hours is measured; the metabolic energy rate (MER) of the culture substrates is estimated with the gas field in 24 hours and the chemical components of the culture substrates in in vitro culture by referring to the estimation model of Menke and Steingass (1988); the net energy lactating rate (NELR) of the mixed sample of the essence supplemented material sample and the coarse fodder sample and the NELF of the coarse fodder are calculated through a model formula; and the comprehensive evaluation on the nutrition quality of the cow essence supplemented material is realized with a milk production efficiency index. The evaluation method has the characteristics of integrity, comprehensiveness, dynamism, multiple indicators and the like, is a more comprehensive, reasonable and brand-new technology for comprehensively evaluating the nutrition quality of the essence supplemented material, is convenient and easy, and is easy to popularize.
Description
Technical field
The present invention relates to a kind of ruminant essence feed supplement nutritional quality assessment method, refer to especially a kind of assessment method that is applicable to milk cow essence feed supplement nutritional quality.
Background technology
The existing smart feed supplement nutritional quality evaluation of China at present mainly concentrates on subjective appreciation and some content of chemical substances is measured above, and these indexs are single, and have certain one-sidedness and limitation.Importantly do not consider the impact of combined effect between the structure and feature of roughage and roughage and concentrated feed, like this, with regard to be difficult to the nutritional quality of smart feed supplement make accurately, science, evaluation all sidedly.For many years, China's production of fodder, sale enterprise and supervision department call always and are carrying out autonomous innovation aspect smart feed supplement nutritional quality assessment technology.Yet up to now, not yet set up a set of modernization, systematization, normalized smart feed supplement flavor evaluation pattern and standard.The quality control of essence feed supplement and evaluation have become one of key issue of the essence feed supplement production of restriction China and modernization development.In order to strengthen that the character surveillance of smart feed supplement is evaluated with unified, set up a set of science, feasible, effective smart feed supplement flavor evaluation technical system has become technical matters in the urgent need to address.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of milk cow essence feed supplement nutritional quality assessment method, this assessment method has considered the nutritional labeling of smart feed supplement itself, taken into account again and roughage between combined effect, the feature with globality, dynamic and many indexs, can realize the comprehensive evaluation to smart feed supplement nutritional quality.
The technical problem to be solved in the present invention is realized by following scheme: milk cow essence feed supplement nutritional quality assessment method, it is characterized in that: adopt smart feed supplement galactopoiesis potentiality efficiency index (Milking potential efficiency index, MPEI) as milk cow essence feed supplement nutritional quality deliberated index, its definition refers to the galactopoiesis potentiality efficiency index of every Kg essence feed supplement product, and its expression formula is:
MPEI(kg/kg)＝NE
LC(Mcal/kg)×1000/750kcal
In formula: NE
lC: the net energy for lactating cow of smart feed supplement, unit is Mcal/kg
750kcal: be equivalent to 1kg containing the fat corrected milk(FCM) energy of fat 4%
The estimation steps of described milk cow essence feed supplement nutritional quality deliberated index is: 1. adopt National Standard Method to measure the conventional nutritional labeling of smart feed supplement, testing index comprises: DM, CP, EE, Ash, 2. smart feed supplement is evenly mixed in 1: 1 ratio with single roughage or 2-3 kind roughage compound sample, form daily ration to be measured, accurately taking respectively 200mg daily ration to be measured and roughage standard specimen is placed in external generating tube as culture substrate and carries out in vitro culture, in vitro culture apparatus main body is water bath with thermostatic control shaking table, its bath temperature is 39 ℃, the culture flask of the about 100ml of volume for culture units, be equipped with and indicate scale glass syringe, syringe port is connected to the plastic three-way valve that can open and close, to guarantee anaerobic fermentation environment, measure the clean gas production rate of cultivating 24h, estimation model with reference to Menke and Steingass (1988), that utilizes that in vitro culture substrate 24h gas production rate and chemical composition estimate culture substrate can value, daily ration metabolizable energy estimation model to be measured adopts ME
r(MJ/kg DM)=1.06+0.157GP+0.084CP+0.22EE-0.081Ash, in formula: GP is the clean gas production rate of daily ration 24h to be measured, and unit is ml/200mg DM, CP is Dietary Crude Protein to be measured, and unit is %DM, EE is daily ration crude fat to be measured, and unit is %DM, Ash is daily ration coarse ash content to be measured, and unit is %DM.Then utilize NE
lR(Mcal/kg)=0.703ME
r(Mcal/kg)-0.19 model calculates the net energy for lactating cow value of daily ration to be measured, and roughage standard specimen net energy for lactating cow value estimation model adopts NE
lF(Mcal/kgDM)=(2.20+0.0272GP+0.157CP+0.149EE)/(14.64 * 0.454), in formula, GP is the clean gas production rate of roughage 24h, unit is ml/200mg DM; CP is roughage crude protein, and unit is %DM; EE is roughage crude fat, and unit is %DM, the net energy for lactating cow value (NE of smart feed supplement
lC)=to be measured daily ration NE
lR* 2-roughage NE
lF; 3. adopt smart feed supplement galactopoiesis potentiality efficiency index to carry out Comprehensive Assessment to milk cow essence feed supplement nutritional quality.Computing formula is as follows:
MPEI(kg/kg)＝NE
LC(Mcal/kg)×1000/750kcal
In formula: MPEI: galactopoiesis potentiality efficiency index, unit is kg/kg; NE
lC: the net energy for lactating cow of smart feed supplement, unit is Mcal/kg, 750Kcal: be equivalent to 1kg containing the fat corrected milk(FCM) energy of fat 4%.
The present invention has the following advantages:
1, this assessment method utilizes the nutritional labeling of smart feed supplement itself as CP, Ash, EE and NE
lconsider, taken into account again the feature of roughage self and the combined effect between smart roughage, there is the features such as globality, comprehensive, dynamic and many indexs.
2, this assessment method simple and easy to do, easy to operate, easily promote, be comprehensive, reasonable, a brand-new smart feed supplement nutritional quality Comprehensive Assessment technology.
Accompanying drawing explanation
Fig. 1 is this assessment method process flow diagram.
Embodiment
Embodiment 1:
Choose the peak of lactation essence feed supplement that representative ten Feed Enterprise are produced, each smart feed supplement product respectively quality roughage standard specimens different from three kinds evenly mixes in 1: 1 ratio.Three kinds of different quality roughage standard specimens are respectively: clover (high-quality group), sheep's hay (ordinary quality group) and maize straw (low-quality group).Accurately take 200mg compound sample and roughage standard specimen carries out in vitro culture as culture substrate respectively, measure the clean gas production rate of 24h culture substrate.Utilize external aerogenesis technology in conjunction with the metabolizable energy value of nutritional labeling estimation culture substrate, recycling model conversation is net energy for lactating cow value, determine smart feed supplement net energy for lactating cow value to be measured, by calculating smart feed supplement galactopoiesis potentiality efficiency index (Milking potential efficiency index, MPEI), smart feed supplement quality is carried out to Scientific Assessment.MPEI computing formula is: MPEI (kg/kg)=smart feed supplement NE
l(Mcal/kg) * 1000/750kcal.Each smart feed supplement product is arranged in pairs or groups from different quality roughage standard specimens, and its MPEI value is different, the correlation of attributes of MPEI value and roughage, but its size is not proportionate with roughage quality, and MPEI fluctuation range is 1.49-2.58Kg/Kg.
Embodiment 2:
Choose the peak of lactation essence feed supplement that representative ten Feed Enterprise are produced, each smart feed supplement product evenly mixes in 1: 1 ratio with mixed roughage standard specimen respectively.Mixed roughage standard specimen is comprised of clover, sheep's hay and maize straw, and its blending ratio is 20: 40: 40, and its screening is larger according to pressing GI value, and cost is minimum to be screened for principle.Accurately take this compound sample of 200mg and mixed roughage standard specimen and as culture substrate, carry out in vitro culture respectively, measure the clean gas production rate of 24h culture substrate.Utilize external aerogenesis technology in conjunction with the metabolizable energy value of nutritional labeling estimation culture substrate, recycling model conversation is net energy for lactating cow value, determine this smart feed supplement net energy for lactating cow value to be measured, by calculating this essence feed supplement galactopoiesis potentiality efficiency index (Milking potential efficiency index, MPEI), this essence feed supplement quality is carried out to Scientific Assessment.MPEI computing formula is: MPEI (kg/kg)=smart feed supplement NE
l(Mcal/kg) * 1000/750kcal.Each smart feed supplement product and the collocation of mixed roughage standard specimen, its MPEI value is different, and its fluctuation range is 1.80-2.72kg/kg.
Claims (1)
1. milk cow essence feed supplement nutritional quality assessment method, is characterized in that: adopt smart feed supplement galactopoiesis potentiality efficiency index as milk cow essence feed supplement nutritional quality deliberated index, its definition refers to the galactopoiesis potentiality efficiency index of every Kg essence feed supplement product, and expression formula is:
MPEI(kg/kg)＝NE
LC(Mcal/kg)×1000/750kcal
In formula: NE
lC: the net energy for lactating cow of smart feed supplement, unit is Mcal/kg
750kcal: be equivalent to 1kg containing the fat corrected milk(FCM) energy of fat 4%
The estimation steps of described milk cow essence feed supplement nutritional quality deliberated index is: 1. adopt National Standard Method to measure the conventional nutritional labeling of smart feed supplement, testing index comprises: dry DM, crude protein CP, crude fat EE, coarse ash Ash, 2. smart feed supplement is evenly mixed in 1: 1 ratio with single roughage or 2-3 kind roughage compound sample, form daily ration to be measured, accurately taking respectively 200mg daily ration to be measured and roughage standard specimen is placed in external generating tube as culture substrate and carries out in vitro culture, in vitro culture apparatus main body is water bath with thermostatic control shaking table, its bath temperature is 39 ℃, the culture flask of volume 100ml for culture units, be equipped with and indicate scale glass syringe, syringe port is connected to the plastic three-way valve that can open and close, to guarantee anaerobic fermentation environment, measure the clean gas production rate of cultivating 24h, estimation model with reference to Menke and Steingass, that utilizes that in vitro culture substrate 24h gas production rate and chemical composition estimate culture substrate can value, daily ration metabolizable energy estimation model to be measured adopts ME
r(MJ/kg DM)=1.06+0.157GP+0.084CP+0.22EE-0.081Ash, in formula: ME
rfor daily ration metabolizable energy to be measured, unit is MJ/kg DM, GP is the clean gas production rate of daily ration 24h to be measured, and unit is ml/200mg DM, CP is Dietary Crude Protein to be measured, and unit is %DM, EE is daily ration crude fat to be measured, and unit is %DM, Ash is daily ration coarse ash content to be measured, and unit is %DM, then utilizes NE
lR(Mcal/kg)=0.703ME
r(Mcal/kg)-0.19 model calculates the net energy for lactating cow value of daily ration to be measured, in formula: NE
lRfor daily ration net energy to be measured, unit is Mcal/kg, ME
rfor daily ration metabolizable energy to be measured, unit is Mcal/kg, and roughage standard specimen net energy for lactating cow value estimation model adopts NE
lF(Mcal/kg DM)=(2.20+0.0272GP+0.157CP+0.149EE)/(14.64 * 0.454), in formula: NE
lFfor the net energy of roughage to be measured, unit is Mcal/kg, GP is the clean gas production rate of roughage 24h, and unit is ml/200mg DM, CP is roughage crude protein, and unit is %DM, EE is roughage crude fat, and unit is %DM, the net energy for lactating cow value (NE of smart feed supplement
lC)=to be measured daily ration NE
lR* 2-roughage NE
lF, 3. adopt smart feed supplement galactopoiesis potentiality efficiency index to carry out Comprehensive Assessment to milk cow essence feed supplement nutritional quality, computing formula is as follows:
MPEI(kg/kg)＝NE
LC(Mcal/kg)×1000/750kcal
In formula: MPEI: galactopoiesis potentiality efficiency index, unit is kg/kg; NE
lC: the net energy for lactating cow of smart feed supplement, unit is Mcal/kg, 750Kcal: be equivalent to 1kg containing the fat corrected milk(FCM) energy of fat 4%.
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Citations (3)
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|---|---|---|---|---|
| CZ277686B6 (en) * | 1989-09-22 | 1993-03-17 | Bohuslav Ing Csc Vencl | Method of determining feeding stuffs digestibility by making use of enzymes |
| RS20090139A (en) * | 2009-03-31 | 2011-04-30 | Institut Za Prehrambene Tehnologije U Novom Sadu | Method for determining feed quality by nirs method |
| CN102178113A (en) * | 2011-05-12 | 2011-09-14 | 河南科技大学 | Feed capable of improving milk yield of milk cow at peak of lactation |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ277686B6 (en) * | 1989-09-22 | 1993-03-17 | Bohuslav Ing Csc Vencl | Method of determining feeding stuffs digestibility by making use of enzymes |
| RS20090139A (en) * | 2009-03-31 | 2011-04-30 | Institut Za Prehrambene Tehnologije U Novom Sadu | Method for determining feed quality by nirs method |
| CN102178113A (en) * | 2011-05-12 | 2011-09-14 | 河南科技大学 | Feed capable of improving milk yield of milk cow at peak of lactation |
Non-Patent Citations (8)
| Title |
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| Bakhshali Khodaparast et.al.Nutritional evaluation of treated canola straw for.《African Journal of Biotechnology》.2011,第10卷(第64期),第14218-14221页. |
| Nutritional evaluation of treated canola straw for;Bakhshali Khodaparast et.al;《African Journal of Biotechnology》;20111019;第10卷(第64期);第14218-14221页 * |
| 分级指数与相对值在奶牛用粗饲料品质评定上的比较研究;张吉鹍 等;《中国奶牛》;20080820(第8期);第15－18页 * |
| 卢德勋.饲料科学的新概念—用系统思维诠释.《饲料工业》.2012,第33卷(第2期),全文. |
| 张吉鵾 等.浅析粗饲料品质评定指数及其模型.《畜牧与兽医》.2004,第36卷(第4期),第23－25页. |
| 张吉鹍 等.分级指数与相对值在奶牛用粗饲料品质评定上的比较研究.《中国奶牛》.2008,(第8期),第15－18页. |
| 浅析粗饲料品质评定指数及其模型;张吉鵾 等;《畜牧与兽医》;20040510;第36卷(第4期);第23－25页 * |
| 饲料科学的新概念—用系统思维诠释;卢德勋;《饲料工业》;20120125;第33卷(第2期);全文 * |
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