Milk yield is primarily dependent on

Options

A. Quality of breeds
B. Absence of disease
C. Quantity of roughage given to animal
D. Quantity of concentrate given to animal

Answer

To determine the primary factor affecting milk yield, we need to analyze the options provided:

1. **Quality of Breeds**: The genetic makeup of an animal plays a crucial role in its milk production capabilities. Different breeds have varying potentials for milk yield. High-quality breeds are genetically predisposed to produce more milk.

2. **Absence of Disease**: Healthy animals are more likely to produce milk efficiently. Diseases can significantly reduce milk yield, but they are not the primary determinant.

3. **Quantity of Roughage Given to Animal**: Roughage is essential for digestion and overall health, and it can influence milk fat content. However, it is more of a supportive factor rather than the primary one.

4. **Quantity of Concentrate Given to Animal**: Concentrates provide high energy and protein, which are important for milk production. Like roughage, this is also a supportive factor.

After analyzing these options, we can conclude that while all factors play a role in milk production, the **quality of breeds** is the primary determinant. This is because even with optimal feeding and health conditions, a low-quality breed will not yield as much milk as a high-quality breed.

### Final Answer:
Milk yield is primarily dependent on the **quality of breeds**.