introduction despite the limited anthropogenic activity in arctic regions, the levels of heavy metals are of concern and the arctic is considered as an important global sink for mercury depletion. mercury is not readily available to the food web in its natural form. however, inorganic mercury are converted to organic mercury compounds by microbial processes of anaerobic organisms. mehg is more ...

In the present study we have investigated the effects of heat acclimation on brain and hepatic Hsp70 protein levels and body temperature of broiler chickens in response to gradual heat stress. Two groups of broilers were raised up to 47 days of age under distinct temperature conditions: thermoneutral (TN, according to bird age) or hot environmental (HS, 31-33°C). At 46 days of age, the birds re...

background: mercury (hg) is considered a global pollutant because hg0 which is the predominant form of atmospheric hg resides in the atmosphere for as long as 0.5 to 2 years. mercury has many negative effects on the reproductive, respiratory, and immune systems. methods: in this study, 24 caspian lampreys (caspiomyzon wagneri) were transported to the university laboratory and then stored in -20...

the present study examined the antioxidant defense of glutamine on plasma and liver antioxidant status in broilers under phs with respect to changes in the levels of lipid peroxidation marker malondialdehyde (mda), total antioxidant status (tas) and the activities of anti peroxidative enzymes [superoxide dismutase (sod) and glutathione dependent antioxidant enzymes glutathione peroxidase (gpx)]...

One hundred forty four 10-day old male Arbor Acres (320±5g) broiler chicks were used to compare the responses in liver function to dietary supplementation of milk thistle (Silybum marianum), artichoke (Cichorium intybus) and olive (Olea europaea) extracts with gemfibrozil and atorvastatin, in broiler chickens fed with a lipogenic diet. Birds raised in the standard experimental conditions and re...

Insectivorous birds are particularly vulnerable to nematodes with heteroxenous life cycles. Although there many studies on bird filarioids, they mainly focus economically important or pet species, and as a result, the species diversity of these parasites is insufficiently studied. Research genus Diplotriaena their hosts neglected, although globally occurring dangerous low specificity final host...

Embryonated New Hampshire Red eggs, sup porting growth of implants of Brown-Pearce car cinoma and Jensen fibrosarcoma on the chorioal lantoic membrane, were used for the liver catalase measurements. The desired tumor tissue was im planted into eggs which had been incubated for 8 days at 37.5°C. The procedure was that reported by Schechtmanci at. (8).' The embryoswere ob tamed after the eightee...

Background: Mercury (Hg) is considered a global pollutant because Hg0 which is the predominant form of atmospheric Hg resides in the atmosphere for as long as 0.5 to 2 years. Mercury has many negative effects on the reproductive, respiratory, and immune systems. Methods: In this study, 24 Caspian lampreys (Caspiomyzon wagneri) were transported to the university laboratory and then stored in ...

one hundred and sixty one-day-old male broilers (ross 308) in a 6-wk period were conducted to 2 groups (with 4 replicates for each group), 20 chicks for a replicate. one group of these chickens was raised in normal temperature (nt) treatment and the other in cold temperature (ct) treatment to induce ascites. at the end of the experiment (wk 6), 2 chickens from each replicate were randomly selec...