The correct option is A A and B
Dairy farm management involves managing animals such as cow, goats, etc. that provide milk and its products for human consumption. Some aspects of dairy farm management are as follows:
1. Maintaining hygiene of each individual animal - A farm contains lots of animals and even if a single animal catches a diseases it will spread among others very quickly. Udders needs to be cleaned everytime milk is taken from animal to prevent contamination milk and also to maintain hygiene of the animal. So, option A is correct.
2. Regular inspection and record keeping - A proper farm management includes proper inspection, amount of food or fodder given to animals like pregnant cows, calfs or lactating cows, etc. Vaccination status records also needs to be maintained. So, option B is correct.
3. Veterinary check-ups - Animals need to be vaccinated on time. Timely check-ups by the vet will ensure that any diseased animal is treated at the earliest to prevent the disease from getting worse and also prevent the spreading of the disease to other animals in its vicinity. So, option C is incorrect.
4. Cleaning of animals - Cleaning of the animals needs to be done on a regular basis, and not just once in a month, otherwise it may spread infections. The faecal matter and food wastes need to be removed from their shelters on a regular basis. So, option D is incorrect.