Step 1: Understanding the Concept:
Local peritonitis in cattle is most commonly a sequela of Traumatic Reticuloperitonitis (TRP or hardware disease), where a foreign metallic object penetrates the reticulum wall, causing localized inflammation of the peritoneum.
Step 2: Detailed Explanation:
Let us evaluate both statements:
- Statement (I): In acute local peritonitis, the localized inflammation and associated pain cause reflex inhibition of the forestomach motility. This leads to a significant decrease in or complete absence of reticulorumen movements (ruminal stasis). Therefore, stating that reticulorumen movements are not affected is incorrect. Thus, Statement (I) is false.
- Statement (II): Urination and defecation require voluntary contraction of the abdominal muscles (abdominal press), which increases intra-abdominal pressure. In animals with acute peritonitis, this increase in pressure stretches the inflamed, sensitive peritoneal membranes, causing acute pain. Consequently, affected cattle will show signs of pain, such as grunting, arching the back, or treading, during these activities. Thus, Statement (II) is true.
Therefore, Statement (I) is false but Statement (II) is true.
Step 3: Final Answer:
Statement (I) is false but Statement (II) is true, which corresponds to option (D).