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Physiological traits and meat quality of pigs as affected by genotype and housing system.

TitlePhysiological traits and meat quality of pigs as affected by genotype and housing system.
Publication TypeJournal Article
Year of Publication2011
AuthorsLebret, B, Prunier, A, Bonhomme, N, Foury, A, Mormède, P, Dourmad, JY
JournalMeat Sci
Volume88
Issue1
Pagination14-22
Date Published2011 May
ISSN1873-4138
KeywordsAbattoirs, Animal Husbandry, Animal Nutritional Physiological Phenomena, Animals, Body Composition, Female, Food Handling, Genotype, Housing, Animal, Male, Meat, Muscle, Skeletal, Swine
Abstract

The influence of pig housing system: alternative (bedding with outdoor area, BO) vs. conventional (slatted floor, SF) on growth performance, reactivity to pre-slaughter handling and meat quality was evaluated in two genotypes differing in the sire line, Duroc (CD) or synthetic (CS) with 40 pigs/genotype. Animal response to housing did not differ between genotypes. BO pigs had higher growth rate and feed intake, but similar carcass composition to SF pigs. Levels of stress related hormones and plasma metabolites at slaughter were not different between BO and SF pigs, suggesting that housing did not influence pig reactivity to pre-slaughter handling. Similar (Longissimus lumborum and Biceps femoris) or slightly reduced (Semimembranosus) pH values, higher drip, lipid content and juiciness were observed in BO compared with SF pork. CD pigs had more tender meat than CS. In conclusion, the BO system resulted in higher feed intake, faster growth rate, increased intramuscular fat, and improved eating quality in both genotypes.

DOI10.1016/j.meatsci.2010.11.025
Alternate JournalMeat Sci.
PubMed ID21185130