TAKING CARE OF PIGS DURING SEASONAL TRANSITIONS: PREVENTION IS BETTER THAN CURE!
Unpredictable weather, sudden rain and sunshine changes, along with fluctuating temperatures between day and night, can easily cause pigs to become stressed, weakened, and more vulnerable to disease outbreaks. For livestock farmers, seasonal transitions are considered a “sensitive period” because even small mistakes in animal care or barn hygiene can quickly lead to serious economic losses.
So, how can farmers effectively care for pigs during seasonal changes, minimize disease risks, and maintain stable growth performance? Below are important techniques to help protect livestock and optimize farming profits.
1. Why Are Pigs More Susceptible to Disease During Seasonal Changes?
The period from April to May each year is often considered a “challenging season” for pig farmers. The weather can suddenly shift from extreme heat to heavy rain, making it difficult for pigs — animals that are naturally sensitive to environmental changes — to adapt quickly.
Reduced Immunity
A pig’s body must work continuously to regulate body temperature according to changing weather conditions, leading to a gradual decline in immunity and overall health.
High-Risk Groups
Piglets and newly weaned pigs are the most vulnerable groups, especially to respiratory and digestive diseases.
Rapid Growth of Pathogens
High humidity after rainfall creates the perfect environment for bacteria and viruses to multiply rapidly.
2. The Impact of “Hot Mornings – Rainy Afternoons”
Sudden temperature fluctuations throughout the day can seriously affect pig health.
Heat Stress
Hot weather during the daytime can cause pigs to:
Become exhausted
Lose appetite
Drink excessive amounts of water
This may dilute digestive fluids and negatively affect feed digestion and nutrient absorption.
Pneumonia and Coughing
When afternoon rain causes temperatures to drop suddenly, pigs exposed to drafts or damp flooring can easily catch cold, leading to acute pneumonia and respiratory infections.
Digestive Disorders
Wet flooring combined with weakened immunity allows harmful bacteria such as E.coli and Salmonella to spread more easily, increasing the risk of diarrhea and digestive problems.
3. Techniques to Keep Pig Pens Dry and Prevent Drafts
A stable living environment is one of the most important factors in maintaining pig health during seasonal transitions.
Check the Drainage System
Farmers should ensure that:
Water does not accumulate after rain
The flooring remains dry at all times
Barn sanitation is maintained properly
Dry flooring significantly reduces the risk of respiratory and digestive diseases.
Prevent Cold Drafts
Use curtains or tarpaulins to block strong winds, especially at night or during rainstorms. However, proper ventilation must still be maintained to remove harmful gases such as NH3 and H2S.
Improve Resting Areas
Place plastic slats, dry straw, or bedding materials in resting areas to prevent pigs from lying directly on cold, damp floors.
4. Strict Water Management and Disinfection Practices
Clean drinking water and proper sanitation act as a “protective barrier” against external pathogens.
Clean Water Is a Top Priority
Hot and humid weather makes drinking water more susceptible to bacterial contamination. Farmers should:
Clean water tanks regularly
Sanitize drinkers and water lines
Replace dirty water frequently
Adding Vitamin C or electrolytes to drinking water can also help improve immunity and reduce heat stress.
Regular Disinfection
Disinfect walkways and areas surrounding pig houses at least 2–3 times per week to reduce the concentration of harmful pathogens in the environment.
Clean Feeding Troughs
Remove leftover feed that becomes damp or moldy due to humidity, as spoiled feed can cause poisoning and diarrhea.
5. Proactive Disease Prevention: A Smart Investment for Better Profits
Many farm owners wait until pigs become sick before purchasing medication. In reality:
“Prevention costs are investments — treatment costs are losses.”
Reduce Overall Costs
Expenses for vaccines, sanitation, and proper nutrition are far lower than:
Antibiotic treatment costs
Reduced growth performance
Pig mortality losses
Shorten the Production Cycle
Healthy pigs maintain better Average Daily Gain (ADG), helping farmers reduce production time and recover investment capital faster.
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