大凉山黑猪杜杂F1代的体尺测定与育肥性状分析

Body Size Measurements and Fattening Traits Analysis on Hybridization of Liangshan Black Pig and Duroc Pig

凉山黑猪肉质好、耐粗饲、抗病力强,但品种一致性差,生长速度慢,成年体重约75 kg/头。采用杜洛克种猪杂交改良大凉山黑猪,其F1代生产性能有所提高,适宜选种时机在28日龄,最好在断奶和双月龄进行二次选种。适宜选择的体尺指标为腹围、胸围和体长。但该F1代的生长性能以及稳定性还不太理想,需要合理导入第二父本参与杂交改良与利用,同时注意环境控制。

Liangshan black pig has a strong resistance to crude feeding and disease, but has poor con- sistency, slow growth rate. Using the Duroc pig crossbred Liangshan black pig, its F1 generation＇s produc- tion performance had improved, and its suitable opportunity of selection breeding at 28 days of age, the suitable body size traits were waist circumference, chest circumference and body length. The growth perfor- mance and stability of the F1 generation were not good enough, it needed to import second male parent in crossbreeding and utilization, and payed attention to reasonable environment control.