HN Bird Assessement

BIRD ASSESSMENT · How to get reliable information to make good decisions

PULLET PHASE

BODY WEIGHT AND UNIFORMITY

MORTALITY

SHANK LENGTH OR KEEL LENGTH

Weigh minimum 100 birds

Daily Mortality (%)

Measure minimum 50 birds

Select cages from different tiers and also from the front, middle and back part of the house.

All the birds of the selected cage need to be weighed.

Weigh weekly

= No. of dead birds today x 100 No. of live birds yesterday

Weekly Mortality (%) = No. of dead birds in last 7 days x 100 No. of live birds on day before the week starts

All the birds of the selected cage or area need to be measured.

Measure 5 week before transfer th

How to do shank measurements

Formula UNIFORMITY = all weighed birds – A1 – B2 all weighed birds A1 = No. of birds >= average BW x 1.1

Accumulated Mortality (%) = No. of dead birds so far x 100 initial No. of housed birds

How to do keel measurements

B2 = No. of birds <= average BW x 0.9

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BIRD ASSESSMENT

LAYING HENS

BODY WEIGHT AND UNIFORMITY

MORTALITY

EFFICIENCY PARAMETERS

Weigh minimum 100 birds

Daily Mortality (%)

FCR kg/kg

Select cages from different tiers and also from the front, middle and back part of the house.

All the birds of the selected cage need to be weighed.

Frequency Weigh weekly up to 30 weeks of age Weigh every 2 weeks up to 40 weeks of age

= kg of feed consumed kg of eggs produced (No. of eggs x average egg weight)

Weekly Mortality (%)

FCR kg/egg

= No. of dead birds in last 7 days x 100 No. of live birds on day before the week starts

Weigh monthly after 40 weeks of age

Formula

= No. of dead birds so far x 100 initial No. of housed birds

A1 = No. of birds >= average BW x 1.1 B2 = No. of birds <= average BW x 0.9

= kg of feed consumed No. of eggs

Egg per Hen Housed Accumulated Mortality (%)

UNIFORMITY = all weighed birds – A1 – B2 all weighed birds

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= No. of dead birds today x 100 No. of live birds yesterday

= No. of eggs produced No. of hens in the production house after the transfer

FCR kg/12 eggs

= kg of feed consumed x 12 No. of total eggs produced

IOFC

= egg mass hen housed x 0.8 – feed intake per hen housed x 0.2

BIRD ASSESSMENT

LAYING HENS

EGG PRODUCTION

Daily Laying Rate (%)

Daily egg size

Under grade

= all produced eggs x 100 daily birds in the farm

= Total weight of produced eggs Total No. of produced eggs

1. No. of broken eggs (BE) 2. No. of cracked eggs (FE) 3. No. of dirty eggs (DE)

Weekly Lay (%)

Weekly egg size = Average egg size of the last 7 days

= Sum of all produced eggs within 7 days x 100 Sum of all the birds within 7 days

Accumulated egg size (g)

Accumulated Lay (%)

= Average of the weight of all produced eggs

= Sum of all the produced eggs No. of birds housed x Days in production

Daily egg mass = Daily % lay x Daily egg size 100

Daily Under grade (%) = No. of daily BE, FE, DE x 100 No. of all daily eggs

Accumulated Under grade = No. of all BE, FE, DE so far x 100 No. of all eggs so far

Weekly egg mass = Weekly % lay x Weekly egg size 100

Accumulated egg mass = Produced eggs x Egg weight No. of birds housed

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