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Health implication of Biellese lamb meat consumption

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6 5 th I n te rn a ti o n a l C o n g re s s o f M e a t S c ie n c e a n d T e c h n o lo g y 8 4 0

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(#5 0 ) A lbe rt o Brugia pa g lia 1 , Ca ro la L us sia n a 1 , Da n iel F ra nc o 2 , J o s e M . L or e n z o 2 , M a rio B a ra tta 3 1 U n iv e rsi ty of T urin , D e pa rt me n t of A g ric ul tur al , F or e s t a nd F ood S c ie nc e s , Grug lias c o , T orino , I tal y ; 2 M e a t T e c h no lo g y C e n tr e of G al ic ia , F ood S c ie nc e a nd T e c h no lo g y , S a n C ibr ao das V iñ as , S pa in; 3 U n iv e rsi ty of T urin , D e pa rt me n t of V et e rin a ry S c ie nc e, Grug lias c o , T orino , I tal y

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C on s ume r in te re s t in me a t fa t, c ho le s te ro l c on te n t a nd fa tt y ac id c om po si -tion h as g ro wn in re c e n t ye a rs due to the ir im p lic a tion s for h um a n he al th . T he h ig h re d me a t c on s um p tion is c on side re d a d ieta ry ri sk fac tor for c a r-d io v as c ula r d is e as e s , be c a us e it h as be e n rela te d to sa tur a te d fa tt y ac id s (S F A ) a nd c ho le s te ro l c on te n t. H o wev e r, re d me a t is al s o a good s our c e of monoun sa tur a te d (M U F A ) a nd po lyun sa tur a te d (PU F A ) fa tt y ac id s th a t h a v e po si ti v e e ffe c ts on h um a n he al th . T he B iel le s e she e p is a n a u toc h thonous Pie mon te s e br e e d s pe c ial iz e d for me a t pr oduc tion due to it s purpor te d h ig h qual it y . H o wev e r, the re is on ly lim it e d in form a tion re ga rd ing B iel le s e me a t qual it y . T he re for e, the a im of th is s tud y w as to ex a m ine the lipid fr ac tion of me a t in r ela tion t o the r e c e n t d ieta ry r e c om me nda tion for he al th y in tak e .

M

ethods

N ine m ale s la m b s we re re a re d in the sa me e n v ir on me n tal c ond it ion s a t the ex pe rime n tal fa rm of the D e pa rt me n t of V et e rin a ry S c ie nc e of the U n iv e r-si ty of T orino. T he la m b s we re in it ial ly fe d on the ir mo the r’ s m ilk a nd the n on  good qual it y h a y un ti l the a n im al s we re we a ne d . F rom the 3 0 th da y the y we re fe d w ith  a c om me rc ial c onc e n tr a te w h ic h w as g radual ly incr e as e d to 1 k g/he ad/da y w h ile h a y w as gi v e n a d lib it um . T he la m b s we re sla ug h te re d a t 5 mon th s of a ge a nd a n a v e ra ge liv e we ig h t of 37 k g . A ft e r 7 da ys of a ge ing a t 4°C , a por tion of L o ngi ss imus d o rs i w as tak e n a nd us e d to det e rm ine the in tr a m us c ula r fa t c on te n t, the fa tt y ac id (F A ) c om po si tion a nd the c ho le s te ro l c on te n t. T he F A c om po si tion w as ex pr e s s e d bo th as pe rc e n ta ge of to tal F A s a nd as mg/1 00 g of e d ib le por tion , c alc ula te d using the to tal fa t c on v e rsion fac tor re por te d b y Gr e e n field a nd S ou thga te (1992). T he fa t e ne rg y v alue (k c al ) w as c alc ula te d b y m ul tip ly ing the a moun t of fa t b y the c on v e rsion fac -tor 9 . F in al ly , the PU F A/S F A a nd n -6/n -3 ra tio s a nd the a the roge n ic (A I) a nd th rom boge n ic (T I) ind ic e s (U lbric h t a nd S ou thga te, 199 1) we re c alc ula te d . V alue s we re ex pr e s s e d as a ri th met ic me a n .

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T he fa t c on te n t of me a t w as lo we r th a n th a t re por te d in the CR A -N U T da ta -s et (h tt p ://n u t. e n te cr a .it/6 4 6/tabel le_d i_c om po siz ione_de g li_al ime n ti .h tm -l?idal ime n to= 10 4 0 4 0&qua n t= 100 ) for la m b (1 .8 v s 2 .7 %). A c c or d ing to E F S A (201 7 ), the in tak e of fa t should ra nge bet we e n 20 to 35% of to tal da il y e ne rg y in tak e . T he re for e, for a 2 200 k c al/da y d iet , the re c om me nde d da il y fa t in tak e ra nge s fr om 4 9 to 86 g ra m s . One s e rv ing (1 00 g) of B iel le s e me a t pr o v ide s a round 3 % a nd 1% of fa t a nd e ne rg y , re s pe c ti v el y . W ith re ga rd s to c ho le s te r-o l, the me a t s upp ly a mode s t c on te n t (7 5 mg/1 00g) w h ic h re pr e s e n ts a round 25% of the re c om me nde d da il y c ho le s te ro l in tak e in adul ts (3 00 mg/d ). T h is v alue w as sim ila r to CR A -N U T v alue for la m b (7 4.82 mg/1 00g). F or the pr e -v e n tion of c a rd io v as c ula r d is e as e s , a n ade qua te in tak e of 4% a nd 0 .5% of the to tal d ieta ry e ne rg y in tak e should be de ri v e d fr om lino le ic (L A ) a nd < -l in -o le n ic ac id s (A L A ), re s pe c ti v el y (E F S A , 201 7 ). T h is c orr e s pond s to a da il y in tak e of a ppr o x im a tel y 10 g/da y of L A a nd 1 g/da y of A L A . One s e rv ing of B iel le s e me a t pr o v ide s on ly 0 .090 g of L A a nd 0 .0 25 g of A L A . In add it ion , E F S A (201 7 ) re c om me nd s a m in im um of 25 0 mg/da y of e ic o sa pe n tae noic (E P A ) + doc o sahex ae noic ac id (D HA ). In th is trial , E P A + D HA c onc e n tr a -tion w as a round 20 mg/1 00 g of e d ib le me a t, the re for e it c a n no t be c on sid -e re d as a s our c e of E P A a nd D HA . In ge ne ral , PU F A/S F A ra tio abo v e 0 .4 5 a nd n -6/n -3 belo w 4. 0 a re re quir e d in the d iet to c om ba t “l ife s ty le d is e as e s ”. In the pr e s e n t s tud y , the PU F A/S F A ra tio (0 .2 3 ) w as c on side rab ly lo we r th a n the re c om me nde d v alue s , w he re as the n -6/n -3 ra tio (2 .20 ) w as w ith in the re c om me nde d v alue . A the roge n ic a nd th rom boge n ic ind ic e s , w h ic h ind i-c a te the g lo bal d iet et ic qual it y of the lipid s a nd the ir po te n tial im pac t on the dev elopme n t of c or on a ry he a rt d is e as e, a v e ra ge d 1. 0 a nd 1.5, re s pe c ti v el y . A c c or d ing to U lbric h t a nd S ou thga te (199 1), the s e v alue s we re w ith in the re c om me nde d v alue s for la m b s (< 1. 0 a nd < 1.58 for A I a nd T I, r e s pe c ti v el y).

Concl

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sion

C on side ring the o b ta ine d re s ul ts , B iel le s e la m b me a t m ig h t p la y a po si ti v e ro le for h um a n he al th i f c on s ume d ac c or d ing t o n u tri tion al guidel ine s .

A

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A u thor s ac kno w le dge fund ing pr o v ide d b y E R A -N et C of und S us A n (g ra n t no 696 2 31 ) for E c o L a m b pr o je c t.

R

e

ference

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Gr e e n field , H., & S ou thga te, D . A . T . ( 1992). F ood c om po si tion da ta – P roduc -tion , m a n a ge me n t a nd us e . L ondon a nd N e w Y or k : El s ev ie r A pp lie d S c ie nc e . U lbric h t, T .L .V ., & S ou thga te, D . A . T . (199 1). C or on a ry he a rt d is e as e : s ev e n d ieta ry fac tor s . T he L a nc et ,3 38( 87 7 3 ):98 5-92 . E F S A (201 7 ). D ieta ry re fe re nc e v alue s for n u trie n ts : s um m a ry re por t. E F S A s uppor ting pub lic a tion 201 7 :e1 5 12 1.

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