Genetic management is usually linked with diversity as it is considered as an important component of recovery strategies for threatened and endangered wildlife.
I was going to mention that genetic management is ensuring sufficient diversity within a population, such as maximising heterozygosity. I came across a great article, which may be useful to you:
Koskela et al. (2013), ;Translating conservation genetics into management: Pan-European minimum requirements for dynamic conservation of forest tree genetic diversity', Biological Conservation, vol. 157, pp. 39-49.
Simply, genetic management should be meant as the preservation of natural species' genetic structure. It is important to distinguish the intrapopulation from interpopulation genetic diversity. Moreover, it is vital to maintain microevolutionary processes underlying the genetic component of biodiversity, such as for instance gene flow and genetic drift. It is difficult to be synthetic, as many books have been writte on this topic....