environments are faced with the challenge of maintaining biochemical and physiological performance across a range of temperatures. Despite the behavioral avenues of temperature control and stress avoidance available to many eurytherms, as environmental temperature begins to drive body temperature towards its stressful limits, survival can become dependent upon sub-organismal response mechanisms...

the present experiment was conducted to evaluate the effects of different levels of vitaminpremix(vp), fed during the last three weeks of a broiler rearing period (22-42 days), on its growthperformance and carcass characteristics. four hundred 22 day old broilers received diets containingfour levels of supplementary vp (0, 33.33, 66.66 and 100%) each at a different weeks of finisherperiod. the ...

we are reporting a case of 47 chromosome complement with an extra rearranged chromosome 22pter→22qll:: llq23 → llqter in a child with multiple malformations whose mother has a balanced reciprocal translocation t(1l,22) with a history of two previous abortions. we emphasize the importance of family study in such cases.