Pig Longissimus lumborum proteome: Part I. Effects of genetic background, rearing environment and gender
2008
Kwasiborski, A. | Sayd, T. | Chambon, C. | Santé-Lhoutellier, V. | Rocha, D. | Terlouw, C.
A 2x2x2 factorial experiment on Longissimus lumborum of 24 pigs found that rearing environment (indoors or outdoors), breed of sire (Duroc or Large White), and gender (female or castrated male) influenced 22, 10, and 88 proteins of the soluble fraction, respectively, containing 220 matched spots in total. Some proteins were influenced by more than one main effect. Outdoor rearing resulted in lower levels of enzymes of the glycolytic pathway suggesting a more oxidative metabolism. Breed of sire slightly altered the balance of enzymes of the glycolytic pathway. Gender had profound effects. In particular, different enzyme levels suggest a more lipid oriented energy metabolism, and a higher extractability of myofibrillar proteins suggest altered control of the contractile apparatus, in castrated males. Differences in extractability did not explain the profound gender effects. Glycogen content, ultimate pH, drip and thawing losses showed main or interactive effects of the three treatment factors.
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