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Breeders, Layers and Hatching Egg Production

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Presentation on theme: "Breeders, Layers and Hatching Egg Production"— Presentation transcript:

1 Breeders, Layers and Hatching Egg Production
R. Keith Bramwell, PhD Department of Poultry Science University of Arkansas

2 Terms Cock: Male chicken Hen: Female
Pullett: Female under six months, non laying Capon: Neutered male chicken Broiler: Raised for meat Layer: Egg production Gestation: Chicken: 21 days Production: usually 1 egg per day Comb: Red tissue on top of head Wattle: Red tissue hanging under beak Brooding: the raising of baby chicks

3 Chickens – layers or broilers:
Broilers – young meat chickens (8 weeks old or less). Roasters – mature chickens used for meat. Capons – castrated males weeks old. There are more than 200 breeds of chickens in the US. Most layers and broilers are cross-breeds.

4 Breeds and Varieties


6 Breeds and Varieties Breed is a type of chicken
Leghorn or a Plymouth Rock Variety is defined by the variations within the breed Leghorn – single comb vs rose comb white vs light brown Plymouth rock – White Rock vs Barred Rock

7 Types of Variations Body shape and structure
Modern game, Japanese, rumpless

8 Types of Variations Leg and feet variations Size Sound?
Silkie, Salmon Favorelle, etc Size Bantam, standard Sound? Long crowers!

9 What is Bantam Chicken? A small version of the larger (standard size) breed Bantams are almost exclusively for exhibition

10 Types of Variations Feather color Solid coloring
Barring, penciled, mottled

11 Types of Variations Feather type Silkies, frizzles, long tails

12 Types of Variations Feather distribution Polish, cochins, naked neck

13 Types of Variations Comb type Single, rose, pea, v-shape, etc

14 Comb Types Single Comb Rose Comb
Blue-hen, Leghorn, Plymouth Rock, New Hampshire, Rhode Island Red Leghorn, Rhode Island Red

15 Comb Types

16 Comb Types V Comb Polish

17 Comb Types Pea Comb Ameraucana, Araucana, Cornish

18 Fertilization & Embryo Development
Fertilization occurs within 5 minutes after ovulation Shell formation takes hours to complete Hen’s body temperature o F Laid egg represents 1 days embryonic growth (20, ,000 cells)

19 Day 0 of Incubation: Before Egg is Laid
Fertile/infertile determination can be made at lay While the egg moves from initial fertilization, to shell membrane formation to shell formation in the oviduct, the embryo develops from the early to late cleavage stages Germinal disc diameter (3-4mm) larger the first few hours after fertilization than at lay


21 Fertile and Infertile Eggs

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