Due to less rain fall this year hot environment not only impaired productivity but also increased mortality in absence of protective measures.
THERMAL COMFORT ZONE —-4 to 25 degree celcius.
It is now accepted that heat stress is major cause of loss in production and in tern the profit in dairy industry.
Environment temp., Radient energy , relative humidity, wind speed all contribute to heat stress
SIGNS OF HEAT STRESS
1. BUNCHING
2. HIGH RESPIRATORY RATE
3. LACK OF COORDINATION
4. DECREASE IN DRY MATTER INTAKE
WE CAN DECREASE THE EFFECT OF HEAT BY ADOPTING SOME MEASURES
1. ENVIRONMENT MODIFICATION
PROVIDE AMPLE WATER FOR ANIMAL TO DRINK
PROVISION OF SHED
A. NATURAL SHADES ; By implanting shaddy tree
B. ARTIFICIAL SHADES; Shade cloth , concrete slabs or gableroots. Metal roofs should be painted black outsides
C. COOLING SYSTEM; Applicationof sprinkles , mistdroplet, fogger system, cooling ponds , fans , coolers
2. NUTRITIONAL MODIFICATIONS
BY increasing 5-7% fat in diet
By providing high quality foorage
increase sodium and potasium content
ruman specific live yeast