Step 1: Understanding the Concept:
The question asks to identify the correct and essential practices for the care of a newborn calf to ensure its health and survival.
Step 2: Detailed Explanation:
Let's evaluate each statement:
A. Removing mucous: This is a critical first step. Clearing the airways (nose and mouth) of mucous and fetal membranes allows the calf to start breathing properly immediately after birth. This statement is correct.
B. Navel care: The navel cord is a potential entry point for infections. Applying an antiseptic like tincture of iodine helps to disinfect and dry the navel, preventing infections like navel ill (omphalitis). This statement is a correct and standard practice.
C. Standing and suckling: A healthy calf should exhibit the instinct to stand and search for the udder to suckle soon after birth, typically within an hour. This indicates good vigor and health. This statement is correct.
D. Colostrum feeding: Colostrum (first milk) is rich in antibodies (immunoglobulins) that provide passive immunity to the calf, protecting it from diseases. The calf's ability to absorb these antibodies is highest in the first few hours of life. It is crucial for the calf to receive colostrum for the first 2-3 days (48-72 hours). This statement is correct.
Since all four statements describe essential and correct practices for newborn calf care, all of them should be included.
Step 3: Final Answer:
All statements A, B, C, and D are correct practices. Therefore, option (C) is the correct choice.