To increases lactation/milk yield, cow is given

Options

A. stibestrol
B. sorbitol
C. gonadotropin
D. prolactin

Answer

To solve the question "To increase lactation/milk yield, cow is given," we need to analyze the options provided and determine which treatment is specifically used for enhancing milk production in cows.

### Step-by-Step Solution:

1. **Identify the Options**: The options given are:
- 1st: Tibesterol
- 2nd: Sorbitol
- 3rd: Gonadotropin
- 4th: Prolactin

2. **Evaluate Each Option**:
- **Tibesterol**: This is a histobesteroid that contains estrogen, which is known to initiate milk yield or lactation in cows. It promotes the growth of mammary ducts and increases milk production after administration.
- **Sorbitol**: This is primarily used to relieve constipation and does not have any known effects on increasing milk yield in cows.
- **Gonadotropin**: This hormone is used to stimulate the release of eggs during ovulation and is not directly related to milk production.
- **Prolactin**: While prolactin is involved in lactation, it is primarily significant in humans. It is not the primary treatment used in cows for increasing milk yield.

3. **Determine the Correct Answer**: Based on the evaluations:
- The correct answer is **Tibesterol** as it is specifically used to enhance milk yield in cows by promoting lactation.

### Final Answer:
To increase lactation/milk yield, cow is given **Tibesterol**.

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