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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