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A rl a c a rb o n f o o tp ri n t m o d e l d a ta r e q u ir e m e n ts In p u t d a ta ne e d e d f o r m o d e l: im p , e xp f e rt ili ze rs ( inc l. M a nu re a nd s tr a w ) E ne rg y u se : tr a ct io n d ie se l, g ra in d ry ing , e le ct ri cit y C ro p s p ro d u ce d o n fa rm ( h a , yi e ld , fe rt ili ze r u se ) M ilk y ie ld H e rd d e ta ils ( d a ir y co w s, h e if e rs , ca lv e s, b u lls ) N u mb e r o f fa lle n , sl a u g h te re d , e xp o rt e d a nd i m p o rt e d a ni ma ls + w e ig h ts H o u si ng s ys te m a nd t im e i nd o o r Im p o rt e d f e e d s F e e d s cu lt iv a te d a nd u se d o n fa rm A rl a c a rb o n f o o tp ri n t m o d e l B a se d o n g iv e n d a ta , m o d e l e st im a te s fe e d r e q u ir e m e n t p e r fa rm a s re q u ir e d e n e rg y In p u ts o f ro u g h a g e a re e st im a te d b a se d o n to ta l fe e d re q u ir e d a nd d a ta o n im p o rt e d a nd h o m e g ro w n f e e d

S O L ID d a ta a n d a d ju st in g t o A rl a m o d e l T h e d a ta w a s c o lle ct e d f ro m o rg a ni c d a ir y f a rm s u si ng t h e N a tu ra l E ng la nd f u nd e d P G ( p u b lic g o o d s) t o o l d e ve lo p e d a t th e O rg a n ic R e se a rc h C e n tr e T h e P G t o o l a s s e s s e s e a c h i nd iv id u a l fa rm a c ro s s 1 1 “ s p u rs ”: S o il M a na g e me n t, B io d iv e rs it y, L a nd sc a p e a nd H e ri ta g e , W a te r M a na g e me n t, N u tr ie n t M a na g e me n t, E ne rg y a nd C a rb o n, F o o d S e cu ri ty , A g ri cu lt u ra l S ys te ms Di ve rs it y, S o ci a l C a p it a l, F a rm B u si ne ss R e si lie nc e , a n d A ni m a l H e a lt h a nd W e lf a re . M a k e s u se o f inf o rm a ti o n w h ic h t h e f a rm e r w ill a lr e a d y h a ve a va ila b le ( e .g . f a rm a cc o u n ts , cr o p p ing r e co rd s, a ni m a l h e a lt h p la n)

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R R a n d C H 4 f ro m e n te ri c fe rm e n ta ti o n R R C o n cl u si o n s L a rg e st c o n tr ib u to rs t o GH G is C H 4 f ro m e n te ri c fe rme n ta ti o n a nd N 2 O f ro m cr o p c u lt iv a ti o n a nd fe rt ili se r u se V a ri a ti o n c a n b e s e e n b e tw e e n f a rms i n mi lk y ie ld s a nd C F : b y ra is ing mi lk yi e ld s, C F p e r k g E C M lo w e rs , e sp e ci a lly w he n f o cu si ng o n e n te ri c fe rme n ta ti o n . In th e mo d e l, C H 4 fr o m e n te ri c fe rme n ta ti o n i s ca lc u la te d a s a f u n ct io n to g ro ss e ne rg y i n ta k e . -> h ig h e ne rg y -> h ig h me th a ne .

F e e d d e si g n c a n he lp i n r e d u ci n g me th a n e f ro m e n te ri c f e rme n ta ti o n R e p la ce me n t ra ti o h a s a n e ff e ct , b u t no t cle a rly s ho w n i n t h is d a ta B e si d e s fa rm a ct iv it ie s, t h e me th o d f o r ca lc u la ti ng t h e c a rb o n f o o tp ri n t co u ld b e i m p ro ve d ; th is ca lc u la ti o n d o e s no t y e t ta k e a cc o u n t o f c a rb o n s e q u e st ra ti o n – d o ing s o w o u ld c ha ng e t h e re su lt s to t h e b e ne fi t o f f a rms u si ng mo re g ra ss -b a se d p e rma ne n t p a st u re s A d d in g c a rb o n s e q u e st ra ti o n to t h e se C F c a lc u la ti o ns w o u ld p ro vi d e a mo re c o m p le te p ic tu re o f GH G e mi ss io ns f ro m o rg a ni c d a ir y fa rms . It i s im p o rt a n t th a t mi ti g a ti o n st ra te g ie s d o t a k e i n to a cc o u n t th e o th e r im p o rt a n t fe a tu re s o f o rg a ni c d a ir y p ro d u ct io n lik e i m p a ct o n b io d iv e rs it y a nd o n c ha ng e s i n s o il c a rb o n se q u e st ra ti o n. A lt h o u g h e n te ri c fe rme n ta ti o n i s th e la rg e st c o n tr ib u to r to GH G e mi ss io ns , d e ve lo p me n t o f mo re s u st a ina b le p ra ct is e s sho u ld t h e re fo re no t o nly b e i n f e e d d e si g n, b u t i n o ve ra ll ta ct ic a l ma n a g e me n t o n f a rms .

T ha n k y o u !