نتایج جستجو برای: fish farming
تعداد نتایج: 127448 فیلتر نتایج به سال:
Salmon lice, Lepeophtheirus salmonis, are naturally occurring parasites of salmon in sea water. Intensive salmon farming provides better conditions for parasite growth and transmission compared with natural conditions, creating problems for both the salmon farming industry and, under certain conditions, wild salmonids. Salmon lice originating from farms negatively impact wild stocks of salmonid...
Information is given about the need to study biological and ecological features of manifestation fish diseases when teaching course «Fish diseases», in connection with new conditions industrial farming.
Columnaris disease, caused by Flavobacterium columnare, is an urgent problem in Finnish fish farming. The occurrence of disease outbreaks has increased significantly at fish farms producing salmonid fingerlings in the inland freshwater area. The reasons for this are unclear, but we have previously suggested that the ecological and epidemiological factors of intensive farming, together with clim...
Puberty comprises the transition from an immature juvenile to a mature adult state of the reproductive system, i.e. the individual becomes capable of reproducing sexually for the first time, which implies functional competence of the brain-pituitary-gonad (BPG) axis. Early puberty is a major problem in many farmed fish species due to negative effects on growth performance, flesh composition, ex...
Testing Factors that Affect Growth in Fish Central to good science are accurate observations, testable hypotheses, well-designed experiments or other tests, and reasonable data analyses. The purpose of Laboratory 1 is to introduce you to the basics of designing and analyzing experiments. The following two laboratory exercises will provide you with further steps in organizing and analyzing data....
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