In the breed AST, a slightly negative trend for rate of inbreeding was observed, but for the breed SBS, a slightly increasing trend was observed, which may lead to a lower-than-expected increase in inbreeding in AST, but a higher-than-expected increase in inbreeding in SBS.
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Genetic Diversity and Trends of Ancestral and New Inbreeding in German Sheep Breeds by Pedigree Data.
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The sentences
New inbreeding, according to Kalinowski, contributed to 71.8% of individual inbreeding, but ancestral inbreeding coefficients showed an increasing trend in all breeds.
On the contrary, merino breeds had an average N e > 150 and an expected increase in inbreeding <5% within 50 years, but a negative trend for population sizes and number of effective sires.