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

Autor: Cleiton Pagliari Sangali, Eliane Gasparino, Vinícius Ricardo Cambito de Paula, Silvia Letícia Ferreira, Bruno Campos, Natália Galoro Leite, Antonio Cláudio Furlan, Paulo Cesar Pozza
Jazyk: English<br />Portuguese
Rok vydání: 2018
Předmět:
Zdroj: Semina: Ciências Agrárias, Vol 39, Iss 1, Pp 373-382 (2018)
Druh dokumentu: article
ISSN: 1676-546X
1679-0359
DOI: 10.5433/1679-0359.2018v39n1p373
Popis: 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.
Databáze: Directory of Open Access Journals
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