Animal Husbandry – Long Answer Questions
Medium Level (Application & Explanation)
Q1. Explain why cross‑breeding is commonly used to improve cattle breeds.
Answer:
- Cross‑breeding is used to combine the best traits of two different breeds.
- Farmers often cross an exotic breed (for example, Jersey) that has a high milk yield and long lactation period with a local breed (for example, Sahiwal) that is disease resistant and well adapted to local climate.
- The result is offspring that show heterosis (hybrid vigour) — improved growth, better milk production than local breeds, and greater resistance than pure exotics.
- Cross‑breeding is cost‑effective for many small farmers because it improves productivity without needing intensive management required by pure exotic breeds.
- Proper selection and record keeping are important to sustain desired traits over generations.
Q2. Describe how the lactation period affects milk production and how a farmer can increase milk yield.
Answer:
- The lactation period is the time after calving when a cow produces milk. A longer lactation period usually means more total milk produced in a lactation cycle.
- To increase milk yield, farmers can: provide balanced nutrition (adequate energy, proteins, vitamins, minerals), ensure clean water, and give proper rest and comfortable housing.
- Regular milking at fixed intervals stimulates milk secretion and prevents udder problems.
- Health care, including vaccination and parasite control, prevents diseases that reduce milk yield.
- Selecting breeds with longer lactation and using cross‑breeding with high‑yielding breeds also increases output sustainably.
Q3. Differentiate between roughage and concentrates and explain their roles in cattle diets.
Answer:
- Roughage includes fibrous feeds like straw, hay, green fodder, and silage. It is high in fiber and helps proper rumen function, chewing, and saliva production. Roughage supplies bulk and supports digestion.
- Concentrates are feeds such as grains, oil cakes, and commercial pellet mixes. They are low in fiber but high in energy and protein. Concentrates provide nutrients needed for growth, milk production, and reproductive health.
- A balanced diet uses both: roughage for healthy digestion and concentrates to meet extra energy and protein demands, especially during lactation.
- Overfeeding concentrates without enough roughage can cause digestive disorders like acidosis.
Q4. What are the key elements of proper cattle housing and daily care?
Answer:
- Proper cattle housing includes a well‑ventilated shed, dry and sloped flooring for easy cleaning, and protection from extreme weather.
- Bedding should be clean and dry to prevent skin infections and maintain comfort.
- Daily care includes regular brushing, cleaning of the shed, removal of dung, and ensuring clean drinking water is always available.
- Regular health checks help detect illness early; check appetite, posture, and milk yield.
- Good management also means timely vaccination, deworming, and maintaining feeding schedules to reduce stress and improve productivity.
Q5. Explain the difference between external and internal parasites in cattle and give common control measures.
Answer:
- External parasites live on the skin and include ticks, mites, lice, and flies. They cause irritation, skin diseases, and can transmit infections. Internal parasites are worms (like roundworms and flukes) that live in the stomach and intestines and cause poor growth, weight loss, and reduced milk yield.
- Control measures for both types include: regular inspection, maintaining clean sheds, and following deworming schedules and acaricide or insecticide treatments as advised by a veterinarian.
- Pasture management, rotational grazing, and avoiding overcrowding reduce parasite load.
- Maintain hygiene, isolate sick animals, and practice biosecurity to prevent spread.
High Complexity (Analytical & Scenario-Based)
Q6. A smallholder notices a sudden drop in milk yield and dullness in several cows. Outline a step‑by‑step plan to diagnose and control the problem.
Answer:
- First, observe clinical signs: appetite, temperature, udder condition, coughing, diarrhea, and behavior. Note how many animals are affected and timeline.
- Isolate sick animals to prevent spread. Check feed and water quality for contamination or sudden change.
- Call a veterinarian for examination and collect samples (milk, feces, blood) for testing. Possible causes include infectious disease, parasite infestation, poor feed quality, or mastitis.
- Begin supportive care (clean water, good feed) and follow vet’s prescription for antibiotics, antiparasitics, or other medicines.
- Improve hygiene, check milking procedures, vaccinate susceptible animals, and review feeding practices to prevent recurrence. Keep records of treatment and outcomes.
Q7. As a farmer, you want to increase milk production but have limited funds. Compare two options: using pure exotic breeds versus cross‑breeding with local breeds. Which should you choose and why?
Answer:
- Pure exotic breeds give high milk but need intensive care: high quality feed, shelter, veterinary care, and are less resistant to local diseases and heat. This requires substantial investment and risk.
- Cross‑breeding combines exotic high milk potential with local disease resistance and climate adaptability. Crossbreds usually need moderate care and give a reliable increase in milk at lower cost.
- For limited funds, cross‑breeding is the better choice because it balances productivity and resilience, reduces the need for expensive inputs, and lowers mortality risk. Proper selection and gradual improvement can provide sustainable gains.
Q8. Design a feeding plan for a lactating cow to meet both maintenance and milk‑producing requirements.
Answer:
- Provide a balanced ration combining roughage and concentrates. For roughage, give good quality green fodder or hay ad libitum to ensure rumen health.
- Include concentrates (grains and protein sources like oil cake) to meet energy and protein needs for milk production; split concentrates into two or three small meals to improve digestion.
- Add minerals and vitamin supplements or a commercial premix to supply micronutrients. Provide clean water freely, as lactating cows need more water.
- Monitor body condition and milk yield, adjust concentrate levels as milk declines. Keep a consistent feeding schedule and consult a vet or nutritionist for precise quantities based on body weight and milk yield.
Q9. A farmer reports recurring tick infestations despite spraying. Analyze possible causes and recommend long‑term control strategies.
Answer:
- Recurrence may be due to improper application (wrong dose or technique), resistant tick populations, contaminated environment (pastures and sheds), or re‑infestation from untreated animals and wildlife.
- Long‑term strategies: implement integrated tick management — rotate acaricides to avoid resistance, treat all animals and follow correct dosage, and schedule treatments based on life cycle.
- Maintain clean, dry sheds, remove vegetation near housing, and practice rotational grazing to break tick life cycles. Consider biological control methods and vaccinate if vaccines are available.
- Regularly monitor tick load, keep records, and consult a veterinarian for a tailored plan and to detect acaricide resistance early.
Q10. Evaluate the role of animal husbandry in national food security and rural livelihoods, including ethical considerations.
Answer:
- Animal husbandry provides milk, meat, eggs, and fish, contributing significantly to national nutrition and food supply. It offers regular income and employment to rural families through rearing, processing, and marketing.
- Livestock support farm productivity by providing draught power and manure for crops, creating integrated farming benefits. They also act as financial assets and social security for smallholders.
- Ethically, farmers must ensure animal welfare: good housing, proper feeding, timely healthcare, and humane handling. Sustainable practices reduce environmental impact (manure management, grazing control).
- Responsible husbandry balances productivity, farmer livelihoods, animal well‑being, and environmental protection, making it vital for resilient rural economies and food security.