Hybrids and Purebreds in Agriculture Agriculture 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?