Scientific Explanations Q.9

Question 0

Progeny testing of AI bulls.

Answer 0

• Testing involves calves of the bull.
• Calves growth rates and FCR compared to progeny of other bulls kept under same conditions.
• More reliable than progeny testing.

Question 1

Benefits of Colostrum to a calf in the hours immediately after birth.

Answer 1

•High in antibodies
•Gives calf resistance to disease
•Has a laxative effect
High in digestible nutrients (protein fat and minerals )

Question 2

The formation of iron pan in a soil profile.

Answer 2

• Higher amount of rainfall.
• Acidic conditions cause leaching.
• Iron washed out of A horizon.
• Accumulates in B horizon.
• Iron solidifies as a thin layer.