(a) Enumerate the different compartments of ruminal stomach. Explain the topographic anatomy of rumen and reticulum in relation…

(a) Ruminant Stomach Compartments and Diaphragmatic Hernia The ruminant stomach has four compartments: rumen, reticulum, omasum and abomasum. The first three are non-glandular forestomachs, and the abomasum is the glandular true stomach. The rumen is the largest, the reticulum (honeycomb) the smallest, the omasum (manyplies) is leaf-like, and the reticular (oesophageal) groove runs from the cardia to the reticulo-omasal orifice, closing in milk-fed young so that milk bypasses the rumen.

Topography: the rumen occupies most of the left abdomen, from about the 7th–8th rib to the pelvic inlet, with dorsal and ventral sacs, and cranial and caudal blind sacs. The reticulum lies most cranially, ventrally, in contact with the diaphragm at the level of the 6th–8th ribs, a little left of the midline, with the liver and heart (separated by the diaphragm and pericardium) just in front. The omasum lies on the right, and the abomasum on the right ventral abdomen.

Relation to hernia: the reticulum has a honeycomb mucosa that traps heavy swallowed metallic objects such as nails and wire. Reticular contractions push the sharp body forward through the wall and diaphragm, causing traumatic reticuloperitonitis, diaphragmatic adhesions, and pericarditis. A weakened diaphragm, with raised intra-abdominal pressure during parturition, bloat or straining, lets the reticulum, and sometimes rumen, herniate into the chest. Signs: chronic bloat, rumen stasis, poor appetite, and respiratory and cardiac distress. A magnet prevents the disease.

(b) Long Bone Fractures Classification: closed (simple) or open (compound); complete or incomplete (greenstick, fissure); by line, transverse, oblique, spiral, comminuted or segmental; by site (diaphyseal, metaphyseal, physeal); and by AO system.

Fixation: external coaptation (splints, Robert Jones bandage, plaster or fibreglass cast, Thomas splint) for stable distal fractures and young animals. Internal fixation (intramedullary pins, interlocking nails, bone plates and screws, cerclage wires). External skeletal fixation (transfixation pins with clamps and bars, often with a cast in large animals).

Complications: delayed union, non-union, malunion, osteomyelitis, implant failure and loosening, fracture disease (joint stiffness, muscle atrophy), vascular or nerve injury, tetanus, and sepsis.

Management: first aid and immobilisation, analgesia, antibiotics and tetanus prophylaxis, wound care and debridement in open cases; reduction and fixation under anaesthesia and asepsis; radiographs to confirm alignment and healing; controlled weight-bearing and confinement; rehabilitation. Dogs and cats are managed with pins, plates or external fixators, whereas adult cattle and horses need rigid plate or transfixation methods because of body weight; calves and small ruminants often heal with cast and splints.

(c) Role of SPCA in Animal Welfare The Prevention of Cruelty to Animals Act, 1960 created the Animal Welfare Board of India, and the Rules of 2001 provide for district SPCAs, chaired by the District Magistrate and including officials, veterinarians and NGOs.

Roles:

• Enforcement: act on complaints and investigate cruelty defined under Section 11 of the Act (beating, overloading, starving, unfit animals for work, abandonment), and phooka under Section 12, and inspect transport and slaughter in line with the transport and slaughterhouse rules; file prosecutions with police support. BNS s.325 (IPC 428, 429) covers killing or maiming animals.
• Rescue and rehabilitation: run shelters, ambulances and veterinary treatment, and arrange adoption.
• Population control: animal birth control and anti-rabies programmes.
• Education: humane education, awareness, and training of police, drivers and traders.
• Advice: guide the government on welfare policy and monitor animal fairs and performing animals.

Limits: poor funding, few trained staff and weak penalties limit its effect.