Body composition traits have potential use in fish breeding programs as indicator traits for selective improvement of feed efficiency. Moreover, feed companies are increasingly replacing traditional fish meal (FM) based ingredients in feeds for carnivorous farmed fish with plant protein ingredients. Therefore, genetic relationships of composition and feed utilization traits need to be quantifie...

Component models were developed to predict the net efficiency of ME utilization for gain in cattle and to predict daily gain using recovered energy as the input. These models were integrated into a single model to predict daily gain from ME available for gain. One component model predicts the net efficiency of ME utilization for gain using constant partial net efficiencies of 0.2 and 0.75 for M...

Three 35-d trials involving 288 crossbred weanling pigs (initial weight, 7.1 kg; age, 28 d) were used to determine the separate and interactive effects of two floor space allowances (.28 and .14 m2/pig) and three dietary lysine levels (NRC recommended, NRC+ .1% crystalline lysine-HCl, and NRC+ .2% crystalline lysine-HCl) on growth performance and several factors that measure variation within pe...

Some people remain lean despite pressure to gain weight. Lean people tend to have high daily activity levels, but the source of this increased activity is unknown. We found that leanness cannot be accounted for by increased weight-corrected food intake in two different types of lean rats. As previously reported in lean people, we found that lean rats had higher daily activity levels; lean rats ...

Although trait anxiety has been associated with risk decision making, whether it is related to risk per se or to the feeling of the risk, as well as the underlying neurocognitive mechanisms, remains unclear. Using a decision-making task with a manipulation of frame (i.e., written description of options as a potential gain or loss) and functional magnetic resonance imaging, we investigated the n...

Feed conversion ratio (FCR) is an important trait to target in breeding programs order improve fish farming sustainability and increase environmental efficiency. Due the complexity of accurately measuring individual feed consumption fish, developing a selective programme FCR challenge. Using video-recordings several consecutive meals tilapia groups, we selected two divergent lines Nile for high...

As obesity is a common disease and its consequences may be serious, it is surprising how seldom the processes by which it arises have been studied experimentally in man. We know of only five human subjects who have been overfed for a significant length of time while attempts were made to assess the weight gain against measured differences between the calorie intake in the food and the calorie e...

three-hundred and twenty 7-day-old ross 308-strain broiler chickens were fed diets containing 0 or 125 ppb aflatoxin b 1 (afb1) from 7 to 28 days of age. sodium bentonite (0.5%), yeast (saccharomyces cervisiae) 0.2%, hydrated sodium calcium aluminosilicate (hscas) (0.5%), ammonia (0.5%), formycine (0.1%), and toxiban (0.1%) were added to the basal diet, as fed basis to determine the effects of ...

the effects of methanolic extract and leaf powder of artemisia annua were studied on performance, cellular and humoral immunity in 240 cobb broiler chicks in a completely randomized design. control group did not receive any treatment. the chicks in the second and third groups were fed with feed which contained 2000 and 4000 ppm plant extract in diet and in the groups 4, 5 and 6 chicks received ...