Artificial selection for increased comb size and its effects on other sexual characters and viability in Gallus domesticus (the domestic chicken).

aves de corral bones cocks comportamiento sexual comportement sexuel coq dard dimension dimensions gallos genetic correlation huesos integument largura length longueur macho males os peso poids poultry ramo selection sex sexe sexo sexual behaviour spurs tegumento testes testicule viabilidad viability volaille weight