Summer managment of poultry diseases nvk

www.poultrykarnataka.netDr. Nitin V Kurkure

Technical Seminar

‘Summer Management of Poultry Diseases’

at 6:00 pm on Saturday 11 Mar 2017 Hampton Court, Hotel Fortune Park JP Celestial,

Race Course Road, Bangalore – 09

Dr. Nitin V Kurkure

www.poultrykarnataka.net

https://play.google.com/store/apps/details?id=app.nelli.kpfba


Facts

• Aspects of poultry production have changed through the 2000 and beyond 2010. – Birds have different genetic characteristics,– Much more productive, – Changes of medication and nutrition. – Peak summer temperatures as high as 480C (1180F), and

temperatures greater than 350C (960F) have been occurring more regularly.

– Temperatures have a major impact on performance of commercial poultry.

• Time to re evaluate summer management


Summer

• March late – -start June

• Temperature range• Humidity • Rates of broilers


How is heat produced in body• Includes

– maintenance, growth and egg production.

• Heat production is affected by– body weight, – species and breed, – level of production, – level of feed intake,– feed quality, – to a lesser extent, by the amount of activity and exercise.

1000 Laying hens produces equivalent of burning 231 lit. of furnace oil


Other source of heat in shed

• Roof and walls• In hot weather, damp litter• Electric lights and motors (very small fraction)

Body heat is the dominant source of heat.


How heat is loss from body

1-RADIATION :

2-CONDUCTION:

3-CONVECTION:


4-EVAPORATION (Panting)

Panting removes heat by evaporation of water from the moist lining of respiratory trans.

540 times of respiration for 1 ml of water. (540 Calories of Energy / ml water lost) Physiological effect of Panting.

How heat is loss from body


How heat is loss from bodyVery important at high temperatures as poultry donot sweat but depend on panting.

This is only effective if the humidity is low.

Hot, humid conditions are therefore much morestressful than hot dry conditions.

4-EVAPORATION (Panting)


Heat stress

• This can occur at all ages and in all types of poultry

Heat production Heat loss


Understanding the stress

“A deviation from normal condition is called the stress”.

There is redistribution of body resources including energy and protein at the cost of decreased growth, reproduction and health.


Patho-physiology of heat stressStage of alarm reaction (Neurogenic system)

Short term regulation of stress

• Stage of resistance or adaptation (Endocrine system) Long term regulation of stress

• Stage of exhaustion Fatigue of Homeostatic mechanism and death

• Stress Activate its cooling capability by compromising other activities like digestion and absorption


Shed temperature STRESS (3 phases)

66 – 76F - Ideal Temperature range (19 – 25 c) 76 – 86 F - Slight reduction in feed (25-30 c) Consumption and eggs size 86 - 90 F - Further drop in feed consumption (30-33 c) Cooling to start before this phase STAGE OF ALARAM >30°c

90 - 96 F – Further drop in feed consumption (33-35c) and egg production – cooling STAGE OF procedures to carry. ADAPTAION96 - 100 F– Heat prostration - Emergency >35°c(35-38c) measures increase water consumption. Over 100 F – Survival difficult unless good cooling STAGE OF (38C) and ventilation measures – Mortality FATIGUE >38

HEAT STRESS


60oF / 16°C

Comfort Zone

SittingHead under wingsHuddlingFluffed feathersIncreased feed consumptionReduced activityShivering

Vasodilatation

Bird’s body temp.

Opening wingsPantingIncreased water consumptionReduced feed & Activity

70oF / 21 °C

80oF / 27°C

90oF / 32°C

100oF / 38°C

110oF / 43°C

116oF / 47 °C

Mortality

Chicken’s Response To Different temperature


How does birds respond heat stress• Try to move away from other

birds.

• Move against cooler surfaces, such as the block walls or into moving air streams.

• Lift their wings away from their bodies to reduce insulation and expose any areas of skin that have no feathers.


How does birds respond heat stress• Elect to pant slowly.

• Rest to reduce heat generated by activity.

• Reduce feed intake.• Increase water

consumption.


How does birds respond heat stress• Divert blood from internal organs to the skin,

which darkens skin colour.

• Begin fast panting

Stress

Normal


HEAT STRESS

Panting⇩

Increase Respiratory Rate⇩

Decrease CO2 level in blood⇩

Respiratory alkalosis

Heat stress depletes Ca, K, Po4 + Na and Cl increase


SYMPTOMS OF STRESS• Impaired growth• Muscle degradation• Weak skeletal development• Anorexia• Abnormal body temperature• Poor feathering/feather loss• Panting

EFFECTS OF STRESS• Cardiovascular Diseases• Gastrointestinal Diseases• Metabolic rearrangement • Mineral metabolism •Immunosuppression

Ultimate Effect – Poor Performance


Diseases encountered in summer

• Infectious – New Castle Diseases– CRD/ E coli– Infectious coreyza – Fowl Cholera– ILT

• Non infectious – Heat Stroke / Painting


Summer management OPEN SIDED HOUSES 1. WET GUNNY CURTAIN ON SIDES WITH

CIRCULATORY FANS & FOGGERS.

2. THICK HDPE CURTAINS ON SIDES WITH CIRCULATORY FANS & FINE MISTING FOGGERS.

TUNNEL VENTILATED HOUSESIMPLE SYSTEM COMPRISES EXHAUST FAN AT ONE END AND COOLING PADS AT OTHER END.


SUMMER MANAGEMENT


Summer management

WET GUNNY CURTAIN ON SIDES WITH CIRCULATORY FANS & FOGGERS

ADVANTAGES :-• Cooling is very effective in dry summer as hot air

passes through wet gunny curtain gets cool.

• Less use of foggers in dry summer.

DISADVANTAGES:-• Difficult to operate in water scarcity zones.• Huge wastage precious water.• More electricity consumption. • Effectiveness sharply decline in hot and humid

season.• More maintenance required.

OPEN SIDED HOUSE


Summer management


Summer managementTHICK HDPE CURTAINS ON SIDES WITH

CIRCULATORY FANS & FINE MISTING FOGGERS

• ADVANTAGES:-1. Less water consumption compare to gunny system. 2. Less maintenance compare to side gunny system. 3. Economical.

• DISADVANTAGES:-1. More water consumption compare to tunnel ventilation.2. Less fresh air movement. 3. Not effective in hot & humid season.4. High maintenance.5. More use of foggers.


Summer management TUNNEL VENTILATION

SIMPLE SYSTEM COMPRISES EXHAUST FANS AT ONE END AND COOLING PADS AT OTHER END

ADVANTAGES:-1. Less water & power consumption.2. Effective in all type of seasons.3. Low maintenance. 4. Conducive for shed hygine

DISADVANTAGE:-5. 100% Dependency on electricity.6. Not economical for small length shed (<350ft).7. High temperature gradient in longer sheds (>450ft).


Summer managementHOT & HUMID

• Wetting gunny curtain has limited role • Still during day time it can be operated

to avoid heat coming from sides of the shed.

• Pulse fogging at peak hr is better• Ensure running of all fans to their

maximum efficiency.• Clean dust stick to the fan blades• Foggers should be over hanged instead

of placing them on cage top.

Inspite Of All Efforts This Season Is Difficult To Manage With This System


Summer managementRoof management

White wash Roof tops.


Provide 6 feet Side Pandal / Shamiyana in the south side of shed to avoid sunlight falling inside the shed

×


Roof management Thatching of Roof tops.

Arrange sprinklers on roof top.

Summer management


Feed management 1. Addition of Vit-C, electrolyte, soda bi -carb &

small enhancement in other Vitamins.

2. Slight reduction in protein % balancing it by adding synthetic amino acids.

3. Mould growth & feed toxins more hence effective toxin binder can be added.

PERIODICAL FEED TESTING FOR TOXINS LEVEL IS MUST

Summer management


Summer management


Summer managementFeed management

1. Feed in cool hours of the day

2.Wet mash feeding

3. Artificial light may be provided 4. to suit the feeding in cool hours.

5. Add Betain Hcl in feed

6. Addition of KCL in feed


Summer managementTO Meet Body Requirements

Provide extra electrolytes and minerals in water.

Provide extra Vitamins – C, D, B complex.


Summer managementTO Meet Body Requirements

Feeding of chelated Chromium helps to fight heat stress

Modulation of immune response


Summer management

Temperature 22oC 32oC

Broiler3rd weeks

100 Ltr 210 Ltr

Broiler6th weeks

280 Ltr 600 Ltr

Water management

WATER CONSUMPTION WITH CHANGE OF TEMPERATURE (1000 birds)


× ×Cover the water tanks with agro waste filled

cover with gunny

Summer managementWater management


Flushing Water from Drinker Line

Keep more than 80% water in the water tank which reduces temp of waterFlush water from the drinker line 2 to 3 times in summer still the chillness is felt in the palm of the hand

Water management Summer management


Cover the exposed pipe lines with gunny cloth

×




• Treat water for drinking

• Treat water used for mist and spray


Summer management Avoid over crowding / give more space.

Feeders cleaning during fogging time.

Run water in feeder channel when temp is

high

Fly control – manure removal.


Summer management Do not disturb birds day time.

Monitor shed temp. by thermometers.

www.poultrykarnataka.netDr. Nitin V KurkureThank you

Summer managment of poultry diseases nvk

Science

Transcript of Summer managment of poultry diseases nvk