Vent sexing of one-day-old chicks in commercial hatcheries has long been common practice and can be highly accurate. However, there are circumstances when this technique is not applicable such as smaller breeds, non-domestic birds, or where is the necessity of precise sexing. In this study we present a simple and reliable method for fast gender determination in selected Galliformes for which ph...

Mode of development in birds helps determine the form of brood parasitism a species exhibits. Most knowledge of precocial brood parasites comes from a single avian family, the waterfowl (Anatidae: Anseriformes). Here we review cases of interspecific brood parasitism (IBP) in a second group of precocial birds, the order Galliformes. IBP is uncommon but taxonomically widespread, occurring in at l...

The kidney trematode Paratanaisia bragai is reported for the first time parasitizing the ring-necked pheasant (Phasianus colchicus L., 1758) and the pathological alterations associated to the parasitism are referred on the basis of 50 specimens of this bird from backyard flocks in 11 counties of the state of Rio de Janeiro, Brazil after clinical examination, necropsies, and histopathological an...

The breeding success of Ring Doves (Streptopelia risoria) fed Aroclor 1254 at 10 ppm was determined over two generations. Six pairs of birds were fed PCBs for three months, then allowed to incubate their clutch of two eggs. Eggs were then collected again for six months, at which time the birds were allowed to incubate another clutch. Results are given in Table 1. The low-hatching success of the...

Evidence suggests that the transmission of shared parasites from ring-necked pheasants (Phasianus colchicus), specifically the caecal nematode Heterakis gallinarum, may be 1 cause of the decline of the gray partridge (Perdix perdix) in the United Kingdom (UK) over the past 50 years. It may be a factor preventing the recovery of the remaining wild gray partridge populations. Trials were undertak...

The sperm of each avian species and breed have unique characteristics that render them more or less susceptible to the freezing–thawing process; therefore, a suitable cryopreservation protocol is specific for type bird needed. In this context, little information about common pheasant’s available. Therefore, aim study was test different parameters at step process freezing into pellets thawing de...