Sexing

Through sexing, biologists and agricultural workers determine the gender of livestock and other animals they work with. The specialized trade of chicken sexing has a particular importance in the poultry industry.

Assisted physical sexing is a relevant issue in vertebrates with cloacae (e.g. birds, reptiles or amphibians) when there is no external sexual dimorphism. In veterinary practice, fibroscopy is used under general anaesthesia in birds such as parrots.

Molecular sexing is a set of techniques that use DNA for determining gender in wild or domestic species (population studies, farming, genetics) or humans (archaeology, forensic medicine). Markers commonly used include amelogenin, SRY and ZFX/ZFY. Various techniques have been developed using simple polymerase chain reaction product size dimorphism, presence/absence, restriction dimorphism, or even sequencing.

Other articles related to "sexing":

Chick Sexing - Trivia
... Chick sexing was featured in episode 7 of Dirty Jobs ... Chick sexing is Steve Smith's summer occupation on the November 16, 2008 episode of American Dad S04E06 ... Chick sexing was an important mode of employment for second-generation Japanese Americans (Nisei), who dominated the trade between the late 1930s and 1950s ...
Black-headed Parrot - Aviculture
... The only ways to determine gender of an individual Black-headed Parrot are surgical sexing and DNA sexing ... DNA sexing is safer for the bird than surgical sexing ...
Methods of Chick Sexing - Vent Sexing
... Vent sexing, also known simply as venting, involves squeezing the feces out of the chick, which opens up the chick's anal vent (called a cloaca) slightly, allowing the chicken sexer to see if the ... The art of vent or cloacal sexing of day-old chickens is difficult to master without instructions from an experienced sexer ... Sexing these chickens can be quite difficult, but with regular practice the sexer will eventually learn to identify the differences ...
Methods of Chick Sexing - Feather Sexing
... Advantages of feather sexing include Increased rate of sexing (feather sexing is faster than machine sexing) 99% to 100% accuracy, which means lower ... Wing-feather sexing of day-old chicks Sexing day-old chicks by differences in the formation of wing feathers (see diagram here) ...