Abstract In China, H9N2 subtype avian influenza outbreak is firstly reported in Guangdong province in 1992.Subsequently, the disease spreads into vast majority regions nationwide and has currently become endemic there.Over vicennial genetic evolution, the viral pathogenicity and transmissibility have showed an increasing trend as year goes by, posi
Predation is known to have a significant effect on life history diversification in a variety of species.However, physical constraints Collections of body shape and size can sometimes limit life history divergence.We test this idea in the Costa Rican livebearing fish Alfaro cultratus.Individuals in this species have a narrow body and keeled ventral
Male broilers were used to evaluate the effects of different energy levels in finisher diets and age of slaughter on performance, production pattern and carcass yield.Experimental design was Bags a 2x3 factorial arrangement: energy level (ME) in the finisher diet (3,200 and 3,600 kcal ME/kg) and age of slaughter (42, 49 and 56 days), resulting in s
Abstract Background Vasoepididymal anomalies are not rare among children with cryptorchidism.They may affect fertility following orchiopexy.Herein, we describe the cases of abnormalities of the vas deferens and epididymis in children undergoing orchidopexy for cryptorchidism.Data were collected retrospectively from six centers providing care for pa