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The Effects Of Crossbreeding And Low Fish Meal Diets On Growth-Related Traits In Chinook Salmon (Oncorhynchus Tshawytscha), Katarina H. Doughty
The Effects Of Crossbreeding And Low Fish Meal Diets On Growth-Related Traits In Chinook Salmon (Oncorhynchus Tshawytscha), Katarina H. Doughty
Electronic Thesis and Dissertation Repository
Growth rate is the most important trait that can be manipulated to create more efficient aquaculture. Crossbreeding, where different populations are bred, has the potential to increase performance through release from inbreeding depression. I crossed a farm population of Chinook salmon (Oncorhynchus tshawytscha) with seven wild populations, then compared growth rate, feed conversion efficiency, swimming speed and metabolic rate between the crossbred and original farmed lines. Crossbreeding resulted in increased growth rates, but had no effect on the other traits. I next evaluated the feasibility of using a diet that replaced fish meal with corn gluten meal and …
Examination Of The Non-Linear V̇O2p Response To Exercise: Non-Invasive Evidence Of Linear Systems Control Using V̇O2p Kinetic Analyses, Daniel A. Keir
Examination Of The Non-Linear V̇O2p Response To Exercise: Non-Invasive Evidence Of Linear Systems Control Using V̇O2p Kinetic Analyses, Daniel A. Keir
Electronic Thesis and Dissertation Repository
The pulmonary O2 uptake (V̇O2p) response to exercise has been characterized by exponential kinetics that remain constant regardless of the exercise protocol used to force the change in V̇O2p (kinetics are invariant). A system that responds in this way is classified as “dynamically linear”, implying that a first-order rate reaction controls V̇O2 at the muscle level (V̇O2m). However, slowed V̇O2p kinetics when initiating exercise from raised baseline intensities challenges this notion. The purpose of this thesis was to characterize the rate (τV̇O2p) and magnitude (gain) of adjustment of V̇O2p …