the effects of dietary supplementation of grape seed extract (gse) and vitamin c on carcass characteristics, gut morphology and ileal microflora in broiler chickens exposed to chronic heat stress were examined. experimental diets included a control diet (without additive), 3 levels of gse (150, 300, 450 mg/kg of diet), and vitamin c (300 mg/kg of diet). each of the five diets was fed to 5 repli...

In this short review of fish gill morphology we cover some basic gross anatomy as well as in some more detail the microscopic anatomy of the branchial epithelia from representatives of the major extant groups of fishes (Agnathans, Elasmobranchs, and Teleosts). The agnathan hagfishes have primitive gill pouches, while the lampreys have arch-like gills similar to the higher fishes. In the lamprey...

the aim of this study was to evaluate the effect of dietary euphorbia hirta and an acidifier mixture supplementation on gut morphology and some blood parameters of broiler chickens.a total of 240 day old male broiler chicks were randomly assigned to one ofthe four dietary treatment groups including: (1) basal diet (control), (2) basal diet + 7.5 g/kg e. hirta (eh7.5), (3) basal diet + 1.5 g/kg ...

due to the presence of polyphenols and phthalides in kelussia odoratissima mozzaf (umbelliferae; k. odoratissima hereafter), this medicinal plant might be a robust in-feed additive to modulate lipid peroxidation in meat-type chickens. the present study evaluates antioxidative, antihyperlipidemic, and growth-promoting effects of k. odoratissima in meat-type chickens. in a 37-day trial (5-42 days...

Ram ventilation and gill function in a lamnid shark, the shortfin mako, Isurus oxyrinchus, were studied to assess how gill structure may affect the lamnid-tuna convergence for high-performance swimming. Despite differences in mako and tuna gill morphology, mouth gape and basal swimming speeds, measurements of mako O(2) utilization at the gills (53.4±4.2%) and the pressure gradient driving branc...

Abstract Mechanisms driving the consumption and transport of tidal marsh nutrients energy by fishes are key interest in San Francisco Estuary, CA, USA. By combining multiple data sources (gill-net catches, gut contents, channel morphology, tides), we modeled spatial temporal patterns fish abundance fullness across a elevation gradient. Channel depth, microhabitat, tide were important predictors...

The electrophoretic banding pattern of esterase isozymes were examined in eighteen different tissues of Nile tilapia after staining with α and β naphthyl acetate as substrate. The tissues were anterior-, mid-, tailmuscle (ventral and tip region), buccal muscle, stomach, fore-, mid-, hind-gut, liver, gill, heart, kidney, eye (lens), eye (iris), fore-, midand hindbrain. Altogether five bands name...

Juvenile rainbow trout (Oncorhynchus mykiss) were exposed to control, 3 microg/L waterborne Cd, or 500 mg/kg dietary Cd in combination with either a control (20 mg/g Ca2+ as CaCO3) or elevated (60 mg/g Ca2+) Ca2+ diet for 28 d. No mortality or growth effects were observed in response to either route of Cd exposure, although fish fed Ca2+-supplemented diets exhibited minor reductions in growth w...