Population Structure and Genetic Diversity of Italian Beef Breeds as a Tool for Planning Conservation and Selection Strategies

Animals

Riccardo Negrini¹  MarcosPaulo Gonçalves de Rezende²  Stefano Biffani³  MariaChiara Fabbri⁴  Christos Dadousis⁴  Riccardo Bozzi⁴  PauloLuiz Souza Carneiro⁵ 

[1] Associazione Italiana Allevatori, 00161 Roma, Italy;Associazione Nazionale Allevatori Bovini di Razza Piemontese, 12061 Carrù, Italy;Consiglio Nazionale delle Ricerche, Istituto di Biologia e Biotecnologia Agraria, 20133 Milano, Italy;Dipartimento di Scienze e Tecnologie Agrarie, Alimentari, Ambientali e Forestali, Università di Firenze, 50144 Firenze, Italy;Universidade Estadual Sudoeste da Bahia, Jequié, Bahia 45205-490, Brazil;

关键词: genetic diversity;    beef cattle;    pedigree analysis;    autochthonous breeds;    conservation;   

DOI  :  10.3390/ani9110880

来源: DOAJ

【 摘 要 】

The aim was to investigate the population structure of eight beef breeds: three local Tuscan breeds under extinction, Calvana (CAL), Mucca Pisana (MUP), and Pontremolese (PON); three local unselected breeds reared in Sardinia, Sarda (SAR), Sardo Bruna (SAB), and Sardo Modicana (SAM); and two cosmopolitan breeds, Charolais (CHA) and Limousine (LIM), reared in the same regions. An effective population size ranges between 14.62 (PON) to 39.79 (SAM) in local breeds, 90.29 for CHA, and 135.65 for LIM. The average inbreeding coefficients were higher in Tuscan breeds (7.25%, 5.10%, and 3.64% for MUP, CAL, and PON, respectively) compared to the Sardinian breeds (1.23%, 1.66%, and 1.90% in SAB, SAM, and SAR, respectively), while for CHA and LIM they were <1%. The highest rates of mating between half-siblings were observed for CAL and MUP (~9% and 6.5%, respectively), while the highest rate of parent−offspring mating was ~8% for MUP. Our findings describe the urgent situation of the three Tuscan breeds and support the application of conservation measures and/or the development of breeding programs. Development of breeding strategies is suggested for the Sardinian breeds.

【 授权许可】

Unknown