(a) Describe the various steps for formulation of poultry broiler starter feed. (10 marks) (b) Describe the physiological role…

(a) Formulation of Broiler Starter Feed Formulating broiler starter feed involves a systematic process to meet the high nutrient demands of chicks. The first step is defining specifications, targeting about 22–23% crude protein and roughly 2,900–3,000 kcal/kg metabolizable energy, with adequate lysine, methionine, calcium and available phosphorus. Next, ingredient selection occurs, prioritizing maize, soybean meal, and fish meal for balanced amino acids. The third step is calculation, using linear programming to determine exact proportions for cost-effective nutrition. Following this, ingredients are weighed and mixed in a horizontal mixer for homogeneity. The mixture is then fed as mash or crumbles (crumbled pellets suit chicks), which improves intake and reduces dust and wastage. Finally, quality control ensures the feed meets safety and nutritional standards before packaging. This sequential approach ensures optimal growth rates in the critical starter phase.

(b) Physiological Role of Blood Vessels Blood vessels form the circulatory network, categorized by function. Arteries carry blood away from the heart under high pressure, with thick elastic and muscular walls, and arterioles act as resistance vessels that regulate blood pressure and regional flow. Veins return blood to the heart at low pressure, featuring valves to prevent backflow, and serve as capacitance vessels holding most of the blood volume. Capillaries, the smallest vessels, facilitate the exchange of gases, nutrients, and waste between blood and tissues due to their thin walls. Specialized portal systems, such as the hepatic portal vein, transport blood from the gut to the liver for detoxification before systemic circulation. The hypophyseal portal system connects the hypothalamus to the pituitary gland for hormonal regulation. Distinctly, pulmonary vessels carry deoxygenated blood to the lungs for oxygenation, while systemic vessels distribute oxygenated blood to body tissues. This structural and functional diversity ensures efficient transport and homeostasis in animals.

(c) Disaster Management Strategies for Livestock Effective livestock management during disasters follows a phased approach. Pre-disaster strategies include establishing early warning systems and creating fodder reserves to mitigate feed shortages, along with prophylactic vaccination against HS, BQ and FMD and identification (ear-tagging) of animals. During the disaster, immediate actions focus on evacuation and sheltering animals in safe zones to prevent injury and loss. Veterinary first aid is administered to treat injuries, while disease surveillance intensifies to detect outbreaks exacerbated by stress and crowding. Post-disaster, carcass disposal is managed strictly to prevent environmental contamination and disease spread. Rehabilitation involves restocking herds, providing veterinary care, and restoring feed supplies. These strategies align with the National Disaster Management Plan (NDMP) 2019, emphasizing preparedness, response, and recovery. By integrating these phases, livestock losses are minimized, and herd health is restored, ensuring long-term sustainability for farming communities.

(d) Indigenous Milch Cattle Breeds India possesses several indigenous milch cattle breeds adapted to local conditions. The Gir breed, from Gujarat, is known for its heat tolerance and resistance to tick-borne diseases, yielding 1500-2000 kg of milk per lactation. The Sahiwal, originating from the Montgomery (Sahiwal) district of undivided Punjab and now bred in Indian Punjab and Haryana, is a hardy breed with good milk yield (1500-2500 kg) and disease resistance. The Red Sindhi, from Sindh (now in Pakistan), thrives in arid regions and offers moderate milk production. The Tharparkar, from the Thar desert (Tharparkar district of Sindh and western Rajasthan), is valued for its adaptability to harsh climates. The Deoni, from the Marathwada region of Maharashtra and adjoining Karnataka, is a dual-purpose breed but recognized for its milk quality. The Rathi, from the Bikaner–Sri Ganganagar tract of Rajasthan, is another significant milch breed with high milk yield potential. These breeds are characterized by their ability to thrive in tropical climates, resist local diseases, and provide consistent milk output, making them vital for smallholder dairy farming in India.

(e) Operation Flood Project Operation Flood, launched in 1970, was a landmark initiative for dairy development in India. Phase I (1970–81) was financed by monetizing skimmed milk powder and butter oil donated by the European Economic Community (EEC) through the World Food Programme. This phase was implemented by the National Dairy Development Board (NDDB, set up in 1965) with the Indian Dairy Corporation and expanded the Anand pattern of cooperative dairy management. Phase II (1981-1985) focused on expanding the network to more districts and improving milk collection infrastructure. Phase III (1985-1996) aimed to increase milk production and improve the quality of dairy products. The project significantly boosted India’s milk production, growing from about 22 million tonnes in 1970 to approximately 69 million tonnes by 1996, crossing 70 million tonnes around 1997-98. India became the world’s largest milk producer in 1998, and the programme empowered rural farmers through cooperative models while ensuring a steady supply of milk and dairy products.