Studies on the role of system aproach for obective monitoring on harmful rodents in animal husbandry
2001
Kesyakova, S. | Elitsina, P. (Natsionalen Diagnostichen Veterinarnomeditsinski Institut "Prof. d-r Georgi Pavlov", Sofia (Bulgaria))
Representative studies in the course of 15 years have been made on 412 animal farms selected according to the stochastic and typological principle. Fifteen ecological factors and 12 control factors have been traced and their impact on seven parameters of rodent population. Adequate systems and subsystems have been set up that have influence on the population parameters of harmful rodents in animal husbandry.
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Эту запись предоставил Institute of Agricultural Economics