GMS Supplement #3: Selecting for Head Shape
Chickens / Genetics Mini-Series / Management

GMS Supplement #3: Selecting for Head Shape

Head Points: Selecting for Head Shape Genetics Mini-Series Supplement #3 In the Genetics Mini-Series article #11, Breeding for Type, we discussed the importance of body shape for production characteristics such as egg laying and meat production.  In this supplement, we will discuss the shape of the head and its role in breeding selection. In Walter … Continue reading

GMS Supplement #1: Recessive White
Chickens / Genetics Mini-Series

GMS Supplement #1: Recessive White

White and Recessive White Genetics Mini-Series Supplement #1 In this first supplement to the Genetics Mini-Series, we’ll look at the different genes behind white plumage and take a deeper look at the recessive white gene. Dominant white(I) is a gene related to dun and smoky (see below) which inhibits the black pigment eumelanin.1  Basically, it … Continue reading

GMS11: Breeding for Type
Chickens / Genetics Mini-Series

GMS11: Breeding for Type

Breeding for Type Genetics Mini-Series Article #11 More important than egg color, feather color, shank color, or any other such decoration is type.  Type refers to the general shape and conformation of the bird.  However, type is not controlled by neat, Mendelian-type genetics  which can be sketched out in a Punnett square.  Body shape, including … Continue reading

GMS9: Autosexing Recipe
Chickens / Genetics Mini-Series

GMS9: Autosexing Recipe

Creating an Autosexing Breed Genetics Mini-Series Article #9 In the article on sex-linkage, we briefly looked at autosexing breeds.  In these breeds, females and males look different as chicks.  Autosexing is based upon the barring gene.  One dose of the barring gene lightens a chick’s down slightly.  Two doses lighten the down considerably.  Using the … Continue reading