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The sex-linked slow-feathering gene can be used for crosses where the sex of the chicks can be determined at hatching time by the length of the wing feathers. A cross between a fast-feathering male and a slow-feathering female results in offspring where the female chicks have primary wing feathers that are significantly longer than the coverts ...
Figure 1. Feathering types in ten-day-old chicks.Left: Fast normal-feathering chick. Right: Delayed-feathering chick carrying sex-linked K gene. Delayed-feathering in chickens is a genetically determined delay in the first weeks of feather growing, which occurs normally among the chicks of many chicken breeds and no longer manifests itself once the chicken completes adult plumage.
Chick. In poultry farming, in-ovo sexing is a chick sexing method carried out while chicks are still in ovo (Latin for "inside the egg"). There are various methods to determine a chick's sex in the 21-day incubation period before it hatches. In-ovo sexing technology has branched into two categories, invasive and non-invasive.
Black sex-link like "Black rocks" are a cross between unique specially bred hybrid strains of Rhode Island Red rooster (but any non-white and non barred rooster may be used for other black sex-link crosses) and a Barred Rock hen (which carry both extended black and barring genes).
The long feathers of the neck Primary flights or primaries: The longest and outermost feathers of the wing Saddle feathers Feathers covering the back or saddle before the tail coverts; in cocks they are long and pointed divided into upper and lower saddles Scapulars Short feathers on the upper side of the wing near the body Secondaries
The ZW sex-determination system is a chromosomal system that determines the sex of offspring in birds, some fish and crustaceans such as the giant river prawn, some insects (including butterflies and moths), the schistosome family of flatworms, and some reptiles, e.g. majority of snakes, lacertid lizards and monitors, including Komodo dragons.
Although country music pushed back against The Chicks, they sold almost 900,000 tickets in the first weekend of their 2003 tour. Months later, they were declared Billboard’s top-selling country ...
Sexing or gender identification [1] is the process of determining the sex of an individual animal. Through sexing, biologists and agricultural workers determine the sex of livestock and other animals they work with. The specialized trade of chicken sexing has a particular importance in the poultry industry.