This agrees with the results of the Shetland survey [ 8], but differs from the 1998 survey where buying-in rams increased, and buying-in ewes decreased the odds of scrapie [ 4].
B. ovis infection also induces indirect losses such as a shorter reproductive career, a decrease in the economic value of rams or an increase in the number of rams needed per ewe [ 8].
Moreover, the frequency of the ARQ allele in ram lambs has changed only slightly, decreasing from 29% in 2002 to 22% in 2004 [ 32].
In both Group 1 and 2 anti-GnRH antibody titres increased after secondary vaccination, however, the antibody titres were higher (p < 0.01) for rams in Group 2. The latter rams showed a marked decrease in testicular size.
Step in Ram Records badman René Lavice.
On the other hand, a decrease in cytokinin sensitivity or content was shown previously to promote an increase in root apical meristem (RAM) size, whereas increased cytokinin action promoted a RAM size decrease [ 71- 73].
Decrease in milk production.
Decrease in academic performance.
Otherwise, most of the problems adversely affecting the reproductive ability of rams can be easily detected through a careful physical examination [ 3]. High prevalence of physical alterations in rams is related to decreased flock production.
