Introduction:
The Animal Husbandry and Veterinary Science is an optional subject in the UPSC Civil Services Examination. Candidates can choose this subject if they have a background or interest in this field. The exam is conducted in two stages - the Preliminary Examination and the Main Examination. In the Main Examination, there are two papers for the optional subject.

Cutoff Marks for Animal Husbandry and Veterinary Science Optional Subject:
There is no specific cutoff mark for each paper in the Animal Husbandry and Veterinary Science Optional Subject Exam. The overall cutoff for the optional subject is determined based on various factors such as the total number of candidates appearing for the exam, the difficulty level of the papers, and the average performance of the candidates.

Determining the Cutoff:
The cutoff marks for the optional subject are determined by the Union Public Service Commission (UPSC) based on the principle of normalization. This means that the scores of the candidates are normalized to account for any variations in the difficulty level of the papers across different sessions or years.

Normalization Process:
The normalization process takes into account the average performance of the candidates in a particular paper and scales the scores accordingly. It ensures that no candidate is disadvantaged due to the variation in the difficulty level of the papers. The process involves converting the raw scores of the candidates into a normalized score, which is used to determine the final cutoff for the optional subject.

Factors Affecting the Cutoff:
The cutoff marks for the optional subject can vary from year to year depending on various factors such as:
- Total number of candidates appearing for the exam
- Difficulty level of the papers
- Average performance of the candidates
- Reservation policy
- Previous year's cutoff marks

Conclusion:
In conclusion, there is no specific cutoff mark for each paper in the Animal Husbandry and Veterinary Science Optional Subject Exam. The overall cutoff for the optional subject is determined based on various factors and through the process of normalization. Candidates should focus on preparing well for the exam and aim to score as high as possible to increase their chances of qualifying for the Main Examination.