Association between polymorphisms in cathepsin and cystatin genes with meat production and carcass traits in Italian Duroc pigs: confirmation of the effects of a cathepsin L (CTSL) gene marker |
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Authors: | Luca Fontanesi Camilla Speroni Luca Buttazzoni Emilio Scotti Stefania Dall’Olio Roberta Davoli Vincenzo Russo |
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Affiliation: | (1) Faculty of Agriculture, DIPROVAL, Sezione di Allevamenti Zootecnici, University of Bologna, Via F.lli Rosselli 107, 42123 Reggio Emilia, RE, Italy;(2) Associazione Nazionale Allevatori Suini (ANAS), Via Lazzaro Spallanzani 4/6, 00161 Rome, RM, Italy;(3) Present address: CRA, Centro di Ricerca per la Produzione delle Carni e il Miglioramento Genetico, Via Salaria 31, Monterotondo Scalo, 00015 Rome, RM, Italy |
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Abstract: | We genotyped single nucleotide polymorphisms (SNPs) in 5 cathepsin or cystatin genes (cathepsin F, CTSF; cathepsin L, CTSL; cathepsin S, CTSS; cathepsin Z, CTSZ; cystatin B, CSTB) in two groups of Italian Duroc pigs: the first group (n. 100) was chosen using a selective genotyping approach with extreme estimated breeding value (EBV) for visible intermuscular fat (VIF); the second group (n. 218) was made of performance-tested Duroc pigs not selected by any criteria. CTSL marker showed a tendency towards association (P < 0.10) with VIF (first group) and back fat thickness (BFT) and average daily gain (ADG; second group). In the second group, the CTSL polymorphism was associated with weight of lean cuts (LC; P < 0.05). Additive effects for all mentioned traits in the second group was significant (P < 0.05). The results we obtained in the Italian Duroc pigs confirmed the results and the direction of the effects already reported for the Italian Large White breed. |
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