共 50 条
- [24] MASTITIS IN DAIRY-COWS VETERINARY CLINICS OF NORTH AMERICA-LARGE ANIMAL PRACTICE, 1981, 3 (02): : 447 - 454
- [27] KETOSIS IN DAIRY-COWS NORTH DAKOTA COOPERATIVE EXTENSION SERVICE CIRCULAR, 1979, (NV-40): : 1 - 2
- [30] Effect of lameness on culling in dairy cows JOURNAL OF DAIRY SCIENCE, 2004, 87 (12) : 4115 - 4122