Naturally occurring insecticides are abundant and varied in their effects, though but a few are articles of commerce. Even for these, pyrethrum, nicotine, rotenone, hellebore, ryania, and sabadilla, there is a paucity of information on mammalian toxicology and environmental effects. In general, these materials are characterized favorably by low acute toxicity and ready dissipation in nature. Un...

background: we investigated the variations of heamathologic and biochemical parameters with different parasitic burdens and the correlation between fecal egg counts and fluke number in livers of sheep naturally infected with dicrocoelium dendriticum . methods: in order to detect excretion of d. dendriticum eggs, fecal samples from 120 sheep of different age groups were collected individually at...

The naturally occurring antioxidants: vitamin E, β-carotene and vitamin C are known to ameliorate theoxidative stress generated during various physiological and pathological conditions. The oxidative stress mayoccur at different sites, different times, and by different mechanisms in the animal system. Lower levels ofthe anti-oxidant vitamins are associated with poor fertility and production lev...

background: assisted reproductive technologies (art) are known as a treatment for infertility in which oocyte undergoes manipulation outside body. the aim of this study was to study the evaluation of birth defects in infants conceived through assisted reproductive technologies (art) and compare them with naturally-conceived infants. materials and methods: in this retrospective study, four hundr...

In many forage legumes, hard seed coat is the main problem impeding thegermination by preventing water and gases transport in seed. We evaluated theeffects of mechanical scarification, chilling, different seedbeds (peat and sand) andtheir combination on the germination ratio and time of 9 naturally grown legumespecies belonging Lathyrus and Vicia genus. Control seeds showed very lowgermination ...