Hybrids and Purebreds in Agriculture Agriculture Biology

Hybrids and Purebreds in AgricultureAgriculture Biology

Question of the Day:What is selective breeding used

for?

Objective: Students will be able to analyze the

two types of selective breeding principles and will interpret hybridization and inbreeding in goats.

Today’s Activity

2 scenarios: This is the only

buck… Given specific traits

to select for… 2 does to choose

from… Which doe will you

choose?

Vocabulary Buck: An intact

mature male goat The _______ smelled

terrible because it was breeding season.

Doe: A mature female goat My _______ is getting

ready to kid.

Dairy Goats

Main Use: Milk production

Main Characteristics: Feminine Refined Capacious

Breeds: Toggenburg Alpine Nubian Saanan Oberhasli LaMancha

Main Use: Meat production

Main Characteristics: Thick muscling Big boned Good fat cover

Breeds: Boer Goat Spanish Goat Tennessee Goat

Meat Goats

Meat Goat or Dairy Goat?

Your Task: Choose a doe to

breed to this buck for each of the scenarios, and explain your choice. Scenario 1: You

want the offspring to only produce meat.

Scenario 2: You want the offspring to produce quality milk and meat.

Each doe is marked, please write down on your handout the name of the doe you would us for each scenario

What Were we Doing?

Scenerio 2: Hybridization:

Crossing organisms than have different traits to bring together the best of both organisms.

Scenerio 1: Inbreeding:

Continued breeding of individuals with similar characteristics.

7 minute Wrap Up Which goats would

demonstrate inbreeding?

Which goats would demonstrate hybridization?