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Assessment of ram fertility in hill flocks in Argyll
  1. WM Barr


Examination of 1260 rams, involving 1540 semen examinations, revealed that 9 per cent of rams in hill flocks in Argyll were subfertile as assessed by semen evaluation. Although 34 lesions of the genitalia were identified, only 13 were associated with poor semen quality. A five year survey of one blackface flock resulted in the elimination, after three years, of a 17 per cent level of infertility following routine examination of all rams, with an increase of 2.27 per cent in the lamb crop. Based on the 1981 lamb prices for this flock an increased income of 1085 pounds was achieved.

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