000032802 001__ 32802
000032802 005__ 20170327111909.0
000032802 0247_ $$2doi$$a10.1017/S1751731115001111
000032802 0248_ $$2sideral$$a92389
000032802 037__ $$aART-2015-92389
000032802 041__ $$aeng
000032802 100__ $$0(orcid)0000-0003-3752-5655$$aSuárez-Belloch, J.
000032802 245__ $$aEffects of sex and dietary lysine on performances and serum and meat traits in finisher pigs
000032802 260__ $$c2015
000032802 5060_ $$aAccess copy available to the general public$$fUnrestricted
000032802 5203_ $$aA total of 160 Duroc×(Landrace×Large White) pigs, 50% barrows and 50% gilts, of 28.3±4.52 kg of BW were used to study the effect of lysine (Lys) restriction in the finisher period, on growth performances and serum and carcass and meat quality traits. The grower diet (from 30 to 90 kg BW) was slightly Lys-restricted (7.8 g standardised ileal digestible (SID) Lys/kg) in accordance with results from a previous trial. During the finisher period (90 to 130 kg BW), four experimental diets with decreasing SID Lys contents (6.3, 5.6, 4.2 and 3.2 g/kg) were tested. Each of the eight treatments (two sexes×four levels of Lys) was replicated five times. Each replicate was a pen with four pigs allocated together. When animals achieved 129±2.59 kg were slaughtered and carcass and meat characteristics were evaluated. No significant interaction sex×diet was found. During the finisher period, barrows grew faster (P<0.001) and ate more feed (P<0.001) but tended to be less efficient (P=0.055) than gilts. The Lys restriction affected linearly (P<0.001) all productive performance traits; daily BW gain and feed intake decreased and feed conversion ratio increased. Also, the concentration of serum urea at slaughter tended to be higher in barrows than in gilts (P=0.065) and was reduced quadratically by the restriction of Lys in feed (P<0.001). Carcasses from barrows had higher backfat thickness (P<0.01) and lower weight of main trimmed lean cuts (ham+shoulder+loin; P<0.05) than those from gilts. The Lys restriction during the finisher period decreased carcass yield (quadratic; P<0.001) and the weight of major cuts (linear; P<0.001). Sex and diet had limited effect on meat characteristics; the Lys restriction decreased quadratically the proportion of protein (P<0.01) and increased linearly the intramuscular fat (IMF) content (P<0.001). We can conclude that dietary Lys restriction during finisher period in pigs impaired growth performances and was not successful to increase the carcass fat deposition, although it could have positive effects on IMF proportion of pork.
000032802 536__ $$9info:eu-repo/grantAgreement/ES/MICYT/CDTI/20090836
000032802 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000032802 590__ $$a1.508$$b2015
000032802 591__ $$aAGRICULTURE, DAIRY & ANIMAL SCIENCE$$b12 / 58 = 0.207$$c2015$$dQ1$$eT1
000032802 591__ $$aVETERINARY SCIENCES$$b30 / 136 = 0.221$$c2015$$dQ1$$eT1
000032802 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/submittedVersion
000032802 700__ $$0(orcid)0000-0002-9463-0753$$aGuada, J.A.$$uUniversidad de Zaragoza
000032802 700__ $$0(orcid)0000-0002-3005-2675$$aLatorre, M.A.$$uUniversidad de Zaragoza
000032802 7102_ $$12008$$2700$$aUniversidad de Zaragoza$$bDepartamento de Producción Animal y Ciencia de los Alimentos$$cProducción Animal
000032802 773__ $$g9, 10 (2015), 1731-1739$$pAnimal$$tAnimal$$x1751-7311
000032802 8564_ $$s111342$$uhttps://zaguan.unizar.es/record/32802/files/texto_completo.pdf$$yPreprint
000032802 8564_ $$s67334$$uhttps://zaguan.unizar.es/record/32802/files/texto_completo.jpg?subformat=icon$$xicon$$yPreprint
000032802 909CO $$ooai:zaguan.unizar.es:32802$$particulos$$pdriver
000032802 951__ $$a2016-06-27-10:30:33
000032802 980__ $$aARTICLE