Step 1: Understanding the Concept:
Livestock economics encompasses production parameters, global trade agreements, quality standards, and environmental impacts associated with the livestock sector.
Step 2: Detailed Explanation:
Let us analyze the validity of each statement:
- Statement (A): In dairy economics, milk of varying fat and protein contents must be standardized to a common unit for comparison.
Fat and Protein Corrected Milk (FCPM) is the standard functional unit used.
Thus, Statement (A) is correct.
- Statement (B): The SPS Agreement is a multilateral treaty of the World Trade Organization (WTO) that came into effect on January 1, 1995, with the creation of the WTO.
Thus, Statement (B) is correct.
- Statement (C): Codex Alimentarius was established jointly by the Food and Agriculture Organization (FAO) and the World Health Organization (WHO) in 1963, not by the WTO in 1945.
Thus, Statement (C) is incorrect.
- Statement (D): The World Organisation for Animal Health (OIE) is headquartered in Paris, France, not in Geneva, Switzerland.
Thus, Statement (D) is incorrect.
- Statement (E): Animal waste and enteric fermentation are significant contributors to greenhouse gas emissions, representing a large share (well above 5%) of global methane emissions.
Thus, Statement (E) is correct.
Therefore, only statements (A), (B), and (E) are correct.
Step 3: Final Answer:
The correct option is 3, which includes (A), (B), and (E) only.