Understanding Agriculture Animals Objective 4.0. Classify Traits for Selection of Animals Objective: 4.01.

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Presentation transcript:

Understanding Agriculture Animals Objective 4.0

Classify Traits for Selection of Animals Objective: 4.01

Beef and Swine Evaluation 4 Livestock producers use visual observations to: –Select breeding cattle or swine based on conformation, breed character, structural soundness of feet and legs, and body capacity. –Select market animals based on muscle, frame size, body capacity, finish and structural soundness.

Terms to Know 4 Anatomy- –The science of body structure or parts of an animal. External anatomy terms are used to classify animals. 4 Conformation- –The physical arrangement of bone and body tissue. It includes the skeletal structure, muscling, fat balance, straightness of the animal’s lines and structural soundness. 4 Breed Character- –Visible in the head and general appearance of the animal.

Terms to Know 4 Muscle- –Refers to the distribution of muscle throughout the animal. Well muscled animals will show fullness through the back, loin and rump. 4 Finish- –Refers to the amount of fat cover on an animal. 4 Structural Soundness- –The arrangement of bone and muscle tissue. –The legs of animal should be long and straight and have adequate bone and foot to carry the animal throughout its life span.

Terms to Know 4 Body Capacity- –The depth of rib the animal displays. Typically analyzed from the side view of the animal. 4 Frame Size- –The length and size of the animal. Used to compare animals that are of similar age to indicate growth and breeding potential. Frame should be proportional to muscle development.

Why? 4 Producers use these traits to select animals that carry desirable traits and cull (remove) animals that display poor traits and qualities. 4 Animals that display undesirable traits should not be used for breeding purposes.

Why? 4 Producers typically use additional data tools such as Average Daily Gain and Expected Progeny Differences to analyze breeding animals.

Livestock External Anatomy

Cattle Parts

4 In your notebook draw a diagram of a beef cow labeling 20 different parts including the 11 red stars in the class diagram

Cattle Parts

Swine Parts 4 In your notebook draw a diagram of a swine labeling 15 different parts including red stars in the class diagram

Swine Parts

Poultry Parts 4 comb 4 wattles 4 beak 4 eye ring 4 ear lobe 4 vent 4 hock Diagram a chicken in your notes labeling these parts: (use the diagram in your textbook for help) toes breast back abdomen body shank

Poultry Parts

Broiler Breed Conformation Selection

Broiler Breeders 4 Live birds are evaluated by assessing deformities, body confirmation and breast meat quantity. These birds are classified as either keep or cull animals to improve the overall flock traits that are passed on to their offspring. 4 Producers should have the bird stand and move to accurately assess traits and characteristics the bird carries.

Body Conformation 4 Refers to the bird’s structure and includes factors such as: width across the shoulder, length of the back, depth of body, spring of rib and width of keel.

Breast Meat Quantity 4 Closely related to body conformation. 4 Refers to amount of meat the bird carries. Producers measure the length, width, depth and how the muscle is carried on the bird. –When evaluating birds, raise the bird and ask the animal to walk in order to evaluate legs, feet and toes.

Live Bird Deformities 4 Traits that will cause the bird to be culled from the flock to prevent undesirable traits being passed down. –Crooked Toes –Leg and Foot Abnormalities –Crossed Beak –Severely Crooked Back

Crooked Toe

Leg/Foot Abnormality

Crossed Beak

Crooked Back