Carcass characteristics and meat quality of finishing gilts fed diets with different levels of SID methionine + cystine and vitamin B6 supplementation

Cleiton Pagliari Sangali, Eliane Gasparino, Vinícius Ricardo Cambito de Paula, Silvia Letícia Ferreira, Bruno Campos, Natália Galoro Leite, Antonio Cláudio Furlan, Paulo Cesar Pozza

Abstract


This study was carried out to evaluate the effects of different levels of standardized ileal digestible (SID) methionine + cystine (Met + Cys) and vitamin B6 supplementation on the carcass characteristics and longissimus lumborum (LL) quality in gilts from 75 to 100 kg. Fifty-six gilts were used (Talent x Topigs 20), with an initial average body weight of 75.06 ± 1.68 kg, allotted in a completely randomized block design arranged in a 2×4 factorial scheme, composed of two vitamin B6 supplementation levels (1.58 and 3.58 mg/kg) and four levels of SID Met + Cys (0.370, 0.470, 0.570, and 0.670%), with seven replicates and one animal per experimental unit. No interactions (P > 0.05) between vitamin B6 supplementation and SID Met + Cys levels were observed. The levels of SID Met + Cys and vitamin B6 supplementation did not affect the carcass characteristics. Thawing loss increased linearly, and a quadratic effect was observed for cooking loss and shear force of the LL when dietary SID Met + Cys levels increased. The highest cooking loss (27.29%) and shear force (21.58 N) were estimated at 0.528 and 0.539% SID Met + Cys levels, respectively. The dietary SID Met + Cys requirement for gilts (75–100 kg) did not exceed 10.60 g/day (0.37%), based on carcass characteristics and meat quality parameters, and was not affected by vitamin B6 supplementation.

Keywords


Sulphur amino acids; Meat colour; Backfat thickness; Cooking loss; Lean yield.

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DOI: http://dx.doi.org/10.5433/1679-0359.2018v39n1p373

Semina: Ciênc. Agrár.
Londrina - PR
E-ISSN 1679-0359
DOI: 10.5433/1679-0359
E-mail: semina.agrarias@uel.br
Este obra está licenciado com uma Licença Creative Commons Atribuição-NãoComercial 4.0 Internacional