نتایج جستجو برای: live food enrichment
تعداد نتایج: 403212 فیلتر نتایج به سال:
Influence of three different stocking densities, vitamin C supplementation of Daphnia spp. and feeding practice (i.e. mechanical, hand) on the success of dry feed habituation of pond reared pikeperch juveniles was investigated through one month trial. Pond reared pikeperch juveniles were harvested 42 days post-fertilisation (mean individual weight 1.1 ± 0.3g) and stocked into the experimental r...
This study was conducted to evaluate the efficacy of live food (Artemia urmiana) and commercial diet in rearing of Oncorhynchus mykiss larvae. Experiment started when larvae were 0.12g in weight. Triplicate groups of fish were offered one of four treatments: (1) a commercial starter food (2) live Artemia urmiana nauplii (for 3 days) (3) live Artemia urmiana nauplii (for 7 days) and (4) combin...
Influence of three different stocking densities, vitamin C supplementation of Daphnia spp. and feeding practice (i.e. mechanical, hand) on the success of dry feed habituation of pond reared pikeperch juveniles was investigated through one month trial. Pond reared pikeperch juveniles were harvested 42 days post-fertilisation (mean individual weight 1.1 ± 0.3g) and stocked into the experim...
in this study, partial and complete replacement of live food ( artemia nauplii) with a microdiet was investigated in post-larval indian white shrimp, fenneropenaeus indicus . post-larvae (pl 1 ) were stocked into nine 20-l vessels (5-l water volume) at a density of 50 l -1 . shrimp were fed six times a day over 10 days. at the end of the feeding period, there was no significant difference in qu...
This study was conducted to evaluate the efficacy of live food (Artemia urmiana) and commercial diet in rearing of Oncorhynchus mykiss larvae. Experiment started when larvae were 0.12g in weight. Triplicate groups of fish were offered one of four treatments: (1) a commercial starter food (2) live Artemia urmiana nauplii (for 3 days) (3) live Artemia urmiana nauplii (for 7 days) and (4) combin...
All too often, clients ignore the concepts of environmental enrichment, socialization, and exercise for their small exotic pet mammals. Sometimes, these pets, such as guinea pigs, rabbits, ferrets, hamsters, gerbils, and rats, live most of their lives in cages or tanks with little regard given to their mental and physical stimulation. With poor husbandry and inappropriate diets, animals become ...
Simple models, based on Lotka-Volterra types of interactions between predator and prey, predict that enrichment will have a destabilizing effect on populations and that equilibrium population densities will change at the top trophic level and every second level below. We experimentally tested these predictions in three aquatic food web configurations subjected to either high or low nutrient add...
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