Systool Web: a new on-line application for the French INRA "Systali" project

Transcription

1 : a new on-line application for the French INRA "Systali" project P. Chapoutot, O. Martin, P. Nozière and D. Sauvant patrick.chapoutot@agroparistech.fr 1

2 Outline of the presentation The French INRA "Systali" project Organization of Objectives of Pedagogical module Calculation module Some illustrations Conclusions 2

3 The Systali project 3

4 To predict more precisely: The "Systali" project = A renovation of the INRA feed unit system 1.The NE (UFL), MP (PDI), AA supplies & the flows of other nutrients (VFA, Gas, Glucose, Fatty Acids) 2.The animal requirements & their responses to NE, PDI & other nutrients Already published (2013 & 2015) Still in progress To enlarge the fields of application of the feed unit systems ( hot countries, intensive diets ) 4

5 The INRA "Systali" nutrient supply model Prediction of the flows of diet nutrients More precise description of Digestive Interactions: Value(diet) = Σ j p j x Table_value(feed) j ± DI Modelling approach of DI: Major impact on OM digestibility 3 Causes: Feeding level (DMI % BW) Prop n of concentrate (0< <1) Rumen Protein Balance (=CP intake CP duodenum) 5

6 In addition Other processes impacted by the 3 factors of DI: - NDF digestibility & Rumen Fermented OM (FOM) - Protein and Starch digestive partition (through transit rate) - CH4 production - Urinary E & N losses Rumen Protein Balance (ration) RPB = f(pdime, PDIMN) => Iterative process of calculation More complex calculations Computer calculations needed = Output data = Input data ( DI) 7

7 Organisation of 8

8 Home Feed Model Ration Model Calculations Downloads FAQ Webmaster Masterfile Contact Logout: PC Objectives of 9

9 Objectives of Due to strong demand from users & professionals To obtain further explanations about the new concepts To practice the use of the new calculation models To integrate all the new equations in their own tools A simple & powerful tool, quickly implemented (3 months) & funded by AFZ, with 2 main objectives: A pleasant e-learning tool for the nutrient supply model An efficient computation tool for feed & ration values 10

10 Home Feed Model Ration Model Calculations Downloads FAQ Webmaster Masterfile Contact Logout: PC Pedagogical module 11

11 Home Feed Model Ration Model Calculations Downloads FAQ Webmaster Contacts Global view Feed+Anim+Ration+Outflow Digestive Interactions Energy Nitrogen Starch Cell wall Fatty acids Amino acids Logout: PC Glossary Area Neighboring Predecessor Successor Equation Graphic RuProBalrefj Delta_OMd_Anij Delta_OMd_RPBj Delta_OMd_FLj Delta_OMd_PCOj OMdj FLrefj Intercept_RPB Intercept_FL Intercept_PCO Slope_RPB Slope_FL Slope_PCO Urea 12 Feed Model / Digest. Inter. / Predecessor / OMdj energy, nitrogen, Nitrogen cell-wall, starch, fatty acids Feed Ration Animal FeedCodj pondxj pctxj Typej BW DMI TypeAni 2 sub-models : the "Feed model" & the "Ration model" Xj TypeCj Variables gathered in different areas RPBj PCO FL Representation of the chaining variables according to the equations RPB(ration) of the models: Urea Slope_RPB LimRPBur Int_RPB RPBrefj Slope_PCO Int_PCO FLrefj Int_FL Slope_FL Detailed description of all the equations of the models DeltaOMd_RPBj Prop. Conc. DeltaOMd_PCOj ± Digestive Interactions Predecessors of OMd Neighboring-, predecessor-, or successor-diagrams Rum. Prot. Bal. Feeding level DeltaOMd_FLj OMdj OMd_Tj OMd Table Value OMd OMd DeltaOMd_Ani Graphs of the main relationships between variables

12 Home Feed Model Ration Model Calculations Downloads FAQ Webmaster Contacts Global view Feed+Anim+Ration+Outflow Digestive Interactions Energy Nitrogen Starch Cell wall Fatty acids Amino acids Logout: PC Glossary Area Neighboring Predecessor Successor Equation Graphic Feed Model / Digest. Inter. / Predecessor / OMdj FeedCodj pondxj pctxj Feed Typej BW DMI Animal TypeAni RuProBalrefj Delta_OMd_Anij Delta_OMd_RPBj Delta_OMd_FLj Delta_OMd_PCOj OMdj FLrefj Intercept_RPB Intercept_FL Intercept_PCO Slope_RPB Slope_FL Slope_PCO Urea Xj Nitrogen RPBj RPB(ration) Rum. Prot. Bal. PCO Prop. Conc. TypeCj Ration FL Predecessors Predecessors of feed of OMd Omd? Feeding level OMd Urea Slope_RPB LimRPBur Int_RPB RPBrefj Slope_PCO Int_PCO FLrefj Int_FL Slope_FL Table Value OMd DeltaOMd_RPBj DeltaOMd_PCOj DeltaOMd_FLj OMd_Tj DeltaOMd_Ani 14 ± Digestive Interactions OMdj OMd

13 Home Feed Model Ration Model Calculations Downloads Global view Feed+Anim+Ration+Outflow Digestive Interactions Energy Nitrogen Starch Cell wall Fatty acids Amino acids Area Neighboring Predecessor Successor Equation Graphic RuProBalrefj CPj Delta_OMd_Anij FOMj Delta_OMd_RPBj MicProtj Delta_OMd_FLj NED Delta_OMd_PCOj PDIAj OMdj PDIEj FLrefj PDIMEj Intercept_RPB PDIMj Intercept_FL PDINj Intercept_PCO RuProBal(diet) Slope_RPB RuProBalj Slope_FL RPBZur(diet) Slope_PCO RPBzurj Urea Feed Model / Digest. Nitrogen Inter. / Successor / Predecessor / RuProBal(diet) / OMdj FeedCodj Amino Acids AaaDIEj Sum_AaaDIE(i)j AADI(i)j PDIME RPBzurj RPB RPBj RPBzur(diet) pondxj Xj Nitrogen RPB(ration) PDIMEj pctxj RPBj RPB(diet) RuProBal Iterative Loop FAQ Webmaster Contacts Nitrogen Feed Typej TypeCj RPB(diet) DOM PCO DOMj BW Ration Dig. Inter. OMd FL deltaomdrpbj DMI Animal TypeAni OMd Logout: PC Glossary OMd OMdj Predecessors of of OMd Energy Edj Successors of diet RPB? ndndfj Cell wall Urea Slope_RPB LimRPBur Int_RPB RPBrefj Slope_PCO Int_PCO FLrefj CH4Ej Int_FL DEj Slope_FL DNDFintj NDFduoj dndfj DeltaOMd_RPBj FOMj DeltaOMd_PCOj DeltaOMd_FLj MEj OMd_Tj DeltaOMd_Ani DNDFruj 16 MicProt MicProj NELj UFLj NEVj OMdj UFVj DNDFint

14 Home Feed Model Ration Model Calculations Downloads FAQ Webmaster Masterfile Contact Logout: PC Calculation module 18

15 Approach & Organisation of calculations Equations applied to estimate the Feed values: "Table" values of feeds, without Digestive Interactions (FL=ref) "Diet" values of feeds, with DI (FL, PCO & RPB of actual ration) ==> iterative process of calculation Additivity calculation used to obtain the Ration values: "Systali" values of the diets Calculation of the Nutrient flows from the ration values Deliberately light structure of data: Simple organisation of the Input variables (Rations, Feeds, User Table) No interpretation/transformation of the output variables (self-interpretation by users) 19

16 What can you do with all these data? Just use your brain and add your own touch! 22

17 Comparison of OM digestibility of rations "Systali" vs "2007" Source: J-B. Daniel (MosarCo Data base) OMd "Systali" (%) With DI Y=X Dairy cows Y = X (n=1185, R²=0.54, RSD=1.95) Without DI OMd "2007" (%) 23

18 Diff. Diff. Systali UFL Systali UFL values (/ kg DM) (/ kg DM) Influence of FL & PCO on the differences Systali of Net Energy ration values diets from experimental farms (Grazing- & Maize silage based) Influence dufl_s-7*r_ni of FL Grazing based diets (+Maize Sil./Grass Sil.) dufl_s-7*rrs_pco Influence of PCO (Source: Idele data) 0.3 Grazing based diets (+Maize Sil./Grass Sil.) Maize silage based diets (+Grazing/Grass Sil./Hay) 3 4 Maize silage based diets (+Grazing/Grass Sil./Hay) 25

19 Conclusion 27

20 A user-friendly & powerful app A synthesis of all the equations of the nutrient supply model A simple & illustrative representation of the chaining variables A very efficient tool light-speed calculations: only sec. for 600 rations including 6000 feeds! Systool web currently in French but an English version available very soon! Future evolutions: Short-term: Updates with the evolutions of the Systali models Later: Comparisons of INRA Systali & international systems 28

21 And right now? Why don't you try it? login: user01, user02,, user09, user10 password: EAAP2015 > even on your smartphones! You can use it for free until the end of the meeting! Try it, enjoy and adopt it! 29

22 Thank you for your attention! 30