Journal
MEAT SCIENCE
Volume 145, Issue -, Pages 230-237Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.meatsci.2018.06.040
Keywords
Amino acid; HMTBA; Muscle; Glutathione; Antioxidant capacity; Technological quality
Categories
Funding
- ADISSEO company
- INRA
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The effects of dietary methionine (Met) supplies above growth requirements on tissue biology and pork quality were studied. At 70 kg, 45 crossbred pigs were fed a control (CONT) diet adequate in Met (0.22% Met) up to 105 kg. For the last 14 days before slaughter, pigs were fed with the CONT diet or with diets where the Met level was increased to Met3 (0.66% Met) or Met5 (1.10% Met). Growth performance and carcass composition did not change with the treatment. Pigs fed the Met5 treatment displayed lower TSARS and higher glutathione levels (P <= .05), along with higher ultimate pH (P < .01) and lower drip, lightness and hue (P <= .10) in the longissimus muscle, compared to the CONT and Met3 pigs. Extra-dietary Met improved ham's technological quality in the Met3 and Met5 groups (P <= .05). Thus, dietary Met supplementation improves pork quality without impairing growth or carcass traits.
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