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Effect of age and gender on carcass traits and meat quality of farmed brown hares

Published online by Cambridge University Press:  09 October 2017

A. Trocino ,
M. Birolo ,
S. Dabbou ,
F. Gratta ,
N. Rigo  and
G. Xiccato
A. Trocino*
Affiliation:
Department of Comparative Biomedicine and Food Science (BCA), University of Padova, Viale dell’Università 16, I-35020 Legnaro, Padova, Italy
M. Birolo
Affiliation:
Department of Agronomy Food Natural Resources Animal and Environment (DAFNAE), University of Padova, Viale dell’Università 16, I-35020 Legnaro (Padova), Italy
S. Dabbou
Affiliation:
Laboratory of Bioressources, Integrative Biology and Valorisation, Higher Institute of Biotechnology of Monastir, av. Tahar Hadded, BP 74, 5000 Monastir, Tunisia
F. Gratta
Affiliation:
Department of Agronomy Food Natural Resources Animal and Environment (DAFNAE), University of Padova, Viale dell’Università 16, I-35020 Legnaro (Padova), Italy
N. Rigo
Affiliation:
Farm Giacinto Rigo, I-30036 Santa Maria di Sala, Venezia, Italy
G. Xiccato
Affiliation:
Department of Agronomy Food Natural Resources Animal and Environment (DAFNAE), University of Padova, Viale dell’Università 16, I-35020 Legnaro (Padova), Italy
*
†E-mail: [email protected]
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Abstract

A total of 48 sub-adult hares and adult reproducing farmed hares were used to characterize carcass and meat traits according to the age and gender of animals. With respect to carcass traits, when age increased, the carcass weight significantly increased (2022 to 3391 g; P<0.001), but dressing out percentages did not change. The dissectible fat (1.3% to 2.2%; P<0.05) and Longissimus lumborum (LL) proportions (13.5% to 14.5%; P<0.001) and muscle-to-bone ratio of hind legs (5.11 to 6.23; P<0.001) increased, whereas the hind leg proportions decreased (37.3% to 36.3%; P=0.01). As for the meat quality, the pH of hind leg (5.74 to 5.83; P<0.001) and LL (5.53 to 5.69; P<0.001) increased with age, while the L* index decreased in both cuts (42.9 to 34.4 in hind leg; 45.1 to 40.3 in LL; P<0.001). The redness index increased at the hind leg (4.07 to 5.76; P<0.001), while it decreased at LL (3.03 to 1.46; P<0.001). In the case of the hind leg, meat thawing losses decreased (1.58% to 1.02%), and shear force increased (2.97 to 4.02 kg/g). In the case of LL, thawing losses decreased (8.79% to 4.91%; P<0.001) in the adult hares compared with the sub-adult ones. Meat water and protein contents decreased in the hind leg and LL of the adult hares compared with the sub-adult ones, whereas ether extract increased in a restricted range in LL only (0.92% to 1.11%; P<0.001). In the case of the hind leg, the rate of the saturated fatty acids (SFA) decreased (41.0% to 26.7%), and the rate of the polyunsaturated fatty acids (PUFA) increased (34.0% to 45.3%) (P<0.001). In the case of LL, SFA (38.6% to 42.9%) and monounsaturated fatty acids (19.4% to 27.2%) increased, whereas PUFA decreased (42.0% to 30.1%) when the age increased (P<0.001). Gender affected only the slaughter results and carcass traits. In conclusion, farmed hares have favourable slaughter results (high dressing percentage), carcass traits (high hind legs and loins rates), and meat nutritional value (high-protein, low-fat meat). This fact would offer additional commercial opportunities, in addition to restocking, to hare farmers.

Keywords

haresslaughter resultsmeat rheological traitschemical compositionfatty acid composition
Type
Research Article
Information
animal , Volume 12 , Issue 4 , April 2018 , pp. 864 - 871
Copyright
© The Animal Consortium 2017 

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