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4-H Embryology Week #2.

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Presentation on theme: "4-H Embryology Week #2."— Presentation transcript:

1 4-H Embryology Week #2

2 4-H Pledge I pledge my Head to clearer thinking
my Heart to greater loyalty my Hands to larger service and my Health to better living for my club, my community my country and my world.

3 Shell Albumen Outer Shell Membrane Chalazae Inner Shell Membrane Yolk Air Cell Blastodisc = Food Source

4 Thick Albumen Thin Albumen Chalazae Shell Blastodisc Yolk Page 5 (Read Pg 3)

5 HOMEWORK Which egg is fertile?

6 Incubation Natural Incubation: the hen sits on the eggs until they hatch. Artificial Incubation: use an incubator and copy the hen’s actions until the eggs hatch. 4 Components of Incubation: Temperature Humidity Exercise Clean, fresh air Page 3

7 5/8/12 20 5/26/12…?? 5/29/12 Page 11

8 The color of the shell is brown.
X Complete Sentences! Spelling Always Counts!

9 Complete Sentences! Spelling Always Counts! Page 12

10 Individual Egg Progress

11 Temporary Organ Sheet (tan)
Internal = ? External = ?

12 Temporary Organ Sheet (tan)
Internal = inside External = outside

13 Temporary Organ Sheet (tan)

14 Temporary Organ Sheet (tan)
Temporary = for a short time, not forever, not permanent

15 Temporary Organ Sheet (tan)

16 Temporary Organ Sheet (tan)
Organ = a group of tissues which perform a certain task.

17 Temporary Organ Sheet (tan)
Temporary Organ = a group of tissues performing a certain task for a short period of time Is a temporary organ internal or external to an embryo’s body?

18 Temporary Organs Protection Protection -Calcium Protection Egg tooth
Two Functions Respiration (lungs) Waste receptacle Protection Protection -Calcium 19 - 21 3 day air supply Food source 16 day supply Protection Main food source 21 day supply

19 What did you see when you candled on Day #4?
Page 13 Scientific Drawing: Yolk = dark orange Albumen = light yellow Embryo = red Blood vessels = red Air cell = white (penny – nickel size)

20 Page 8

21 7 All the organs are formed and the heart is inside the body. Homework: Page 6 Pages 11 & 12 (skip questions 4,5,6) Page 15 Rooster Word Search (green paper) Shell Eye Spot Air Cell 7 Albumen Embryo Blood Vessels Yolk Page 13


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