There were no consistent, statistically significant treatment-related adverse effects on behavior, morbidity, mortality, body weight, food consumption and efficiency, clinical chemistry, hematology, or urinalysis.
Evolved differences in juvenile growth rate were positively correlated with changes in food consumption, growth efficiency, behavioral willingness to forage, fecundity, egg volume, larval size at hatch, larval viability, larval growth, and vertebral number (Walsh et al. 2006).
During the trial, body weight gain, food consumption and food efficiency were recorded, and no adverse effect was observed in rats fed transgenic (T) rice diets compared with non-transgenic (N) or control diets.
Within this interval, growth acceleration is achieved through higher metabolism supported by increased food consumption and conversion efficiency [6].
Increased oxygen consumption – indicative of an increased metabolic rate – could explain growth and development costs of responding to predators despite no reduction in food consumption or digestion efficiency.
We used generalized linear models with a gamma distribution and a log link function for egg volume, larval size at hatch, food consumption, and conversion efficiency.
Replicates were nested within treatment lines in all cases, except for the food consumption and conversion efficiency experiments in generation 11 (space constraints only allowed for the testing of one line).
Faster growth is positively correlated with a suite of covarying traits that together maximize energy acquisition including increased standard metabolism (Billerbeck et al. 2000; Arnott et al. 2006), food consumption and conversion efficiency (Present and Conover 1992), and foraging activity (Chiba et al. 2007).
Thus, we explored how dietary protein and lipid (P/L) levels of 42/16 (low protein, LP diet) and 55/11 (high protein, HP diet) and water temperature (11, 6 and 2 °C) influenced the specific growth rate (SGR), hepatosomatic index (HSI), adjusted specific growth rate (SRGA), food consumption (FC), gross conversion efficiency (GCE) and gastric evacuation (GE) of juvenile Atlantic cod and haddock.
Also, food consumption rate and conversion efficiency decreased.
Low concentrations of gossypol could stimulate larval growth by increasing food consumption rate, increasing food conversion efficiency, or reducing the metabolic cost of other physiological activities.
