Embed Size (px)
Citation preview
Breeder ManagementSupplement
C O B B - V A N T R E S S . C O M
Management must not only meet the basic needs of the stock but also be fine tuned toattain the full potential of the breed. Our recommendations in this booklet are based oncurrent scientific knowledge and practical experience, and reflect the genetic potentialof the Cobb hen based on Total Egg and Hatch Percent records taken from the top 25%of Cobb flocks worldwide.
This booklet should be used as a guide only, and adapted locally according to yourown experience when projecting performance from all flocks in a particular operation.You should be aware of any local legislation which may influence the managementpractices that you should choose to adopt.
Please contact your Cobb Technical Representative for further assistance.
Cobb is dedicated to selection of breeds for health, welfare and performance traits andcontinues to expand the variety of breed crosses to meet global customer expectations.Today’s modern breeder chickens are more efficient, more productive, and more robustthan prior generations of chickens. This progress is due to improved genetics andadvances in husbandry methods that enhance the longevity, welfare outcomes andperformance of breeder chickens at rearing and laying farms.
This Cobb Breeder Management Supplement is to be used in conjunction with the CobbBreeder Management Guide to assist you in building your management program.
Breeder Management
Breeder ManagementBreeder Performance
Age at depletion (weeks) 60 65
(days) 420 455
Age at 3% production (weeks) 24 24
(days) 168 168
Peak production (%) 86
Total eggs/hen housed 166.4 181.3
Hatching eggs/hen housed (50g minimum) 161.6 176.3
Peak hatchability (%) 90
Cumulative hatchability (%) 86.2 85.6
Broiler chicks/hen housed 139.3 150.9
Livability from 25 weeks (%) 92.8 92.3
Dark Out Open Sided
Female body weight (24 weeks) (kg) 3.00 3.12
(lb) 6.61 6.88
Female body weight (30 weeks) (kg) 3.60 3.66
(lb) 7.94 8.07
Female body weight (60 weeks) (kg) 4.21 4.26
(lb) 9.28 9.39
Female Body WeightsDark-Out Rearing
Between 2 to 22 weeks, weights should be taken when the crop is empty (dry body weight) or at least6-7 hours after the last feeding. Another option is to weigh the birds after the lights come on andbefore feeding takes place. (Please consult with your Cobb Technical Advisor for feed and lightprograms.) Weights correspond to the weekly anniversary date.
Please refer to the Cobb Breeder Management Guide for general flock management recommendations,uniformity management, and guidelines concerning post peak feeding. Flock uniformity of 70-78% or8-10% CV is preferred by 15-16 weeks to achieve proper condition prior to light stimulation.
0714212835424956637077849198105112119126133140147154161168
1452804055206307408409401030112012101300139014901590169018301980214023002450260028503000
0.320.620.891.151.391.631.852.072.272.472.672.873.063.283.513.734.034.374.725.075.405.736.286.61
93452821171412109877776888776105
Body WeightBody WeightAgedays weeks Gain %g lb
123456789101112131415161718192021222324
Female Body WeightsOpen Sided Rearing
0714212835424956637077849198105112119126133140147154161168
1452854255506607708759751070116012501340143015201630175019002050222023802540270029603120
0.320.630.941.211.461.701.932.152.362.562.762.953.153.353.593.864.194.524.895.255.605.956.536.88
97492920171411108877677988776105
Body WeightBody WeightAgedays weeks Gain %g lb
123456789101112131415161718192021222324
Between 2 to 22 weeks, weights should be taken when the crop is empty (dry body weight) or at least6-7 hours after the last feeding. Another option is to weigh the birds after the lights come on andbefore feeding takes place. (Please consult with your Cobb Technical Advisor for feed and lightprograms.) Weights correspond to the weekly anniversary date.
Please refer to the Cobb Breeder Management Guide for general flock management recommendations,uniformity management, and guidelines concerning post peak feeding. Flock uniformity of 70-78% or8-10% CV is preferred by 15-16 weeks to achieve proper condition prior to light stimulation.
Female Adult Body Weights
242526272829303132333435363738394041424344454647484950515253545556575859606162636465
300031303260336034603540360036453680371537503780381038353860388039003920394039603980400040204040406040804095411041254140415041604170418041904200421042204230424042504260
6.616.907.197.417.637.807.948.048.118.198.278.338.408.458.518.558.608.648.698.738.778.828.868.918.958.999.039.069.099.139.159.179.199.229.249.269.289.309.339.359.379.39
312032403340344035303600366037003735377038003830385538803900392039403960398040004020404040604080410041204140416041754190420042104220423042404250426042704280429043004310
6.887.147.367.587.787.948.078.168.238.318.388.448.508.558.608.648.698.738.778.828.868.918.958.999.049.089.139.179.209.249.269.289.309.339.359.379.399.419.449.469.489.50
Open Sided Body WeightDark Out Body WeightAge inweeks g lb g lb
Egg Weights and Grading
Egg weights are dependent on the bodyweight and production level of the hens, as well as the levelof nutrition being fed to the flock. These numbers are a guide only, and could vary considerablyaccording to management conditions.
242526272829303132333435363738394041424344454647484950515253545556575859606162636465
Egg Wtg Small 2 Yolk Cull
EGG GRADING %Hairline Cracked Floor Eggs
48.549.951.352.754.456.157.358.359.260.060.761.462.062.663.163.664.064.464.865.265.666.066.466.867.267.567.868.168.468.768.969.169.369.569.769.970.170.370.570.770.971.1
23.410.26.93.91.21.00.60.50.30.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
2.03.03.53.22.82.21.81.30.80.40.20.10.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
6.02.51.81.00.60.50.50.40.30.20.20.20.20.20.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.5
10.24.13.21.71.01.00.90.90.80.60.60.60.60.61.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.0
3.01.00.80.50.20.20.20.20.20.20.20.20.20.20.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.5
15.07.03.02.52.02.02.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0<2.0
Age inweeks
3.020.050.073.082.085.086.085.884.883.882.881.880.879.878.877.876.775.674.573.372.170.969.768.567.366.164.963.662.361.059.658.256.855.454.052.551.049.547.946.344.743.1
0.250.500.801.301.702.052.352.602.803.003.203.403.603.804.004.204.404.654.905.155.355.505.655.805.956.106.256.356.456.556.656.756.856.957.057.157.257.357.457.557.657.74
0.21.65.110.115.821.627.533.339.144.850.455.961.466.772.077.382.487.492.497.3102.0106.7111.3115.8120.3124.6128.9133.1137.1141.1145.0148.8152.5156.1159.6163.1166.4169.6172.7175.7178.6181.3
242526272829303132333435363738394041424344454647484950515253545556575859606162636465
1.215.040.065.776.381.683.484.183.582.581.680.579.578.577.576.675.574.473.372.170.969.868.667.466.265.063.862.561.260.058.657.255.854.553.151.650.148.747.145.543.942.4
40.075.080.090.093.096.097.098.098.598.598.598.498.498.498.498.498.498.498.498.498.498.498.498.498.498.398.398.398.398.398.398.398.398.398.398.398.398.398.398.398.398.3
0.11.13.98.413.719.325.030.736.442.047.553.058.363.668.874.079.084.088.993.798.4103.0107.5112.0116.3120.6124.8128.9132.9136.8140.6144.4148.0151.6155.0158.4161.6164.8167.8170.8173.6176.3
Breeder PerformanceAge in Weeks
Total Eggs(%HW)
HatchingEggs (%HW)
MortalityCum. (%)
% HE(Weekly)
Total Eggs(HH)
HatchingEggs (HH)
72.078.080.082.084.085.086.087.088.089.090.089.989.889.689.489.188.988.688.387.987.587.186.786.385.985.585.184.784.383.983.482.982.481.981.480.980.479.979.478.978.477.9
88.090.092.894.095.095.596.096.596.696.796.796.796.796.696.696.596.596.496.296.296.196.196.095.795.595.395.094.794.594.294.093.893.593.092.291.590.690.089.288.587.386.5
81.886.786.287.288.489.089.690.291.192.093.193.092.992.892.592.392.191.991.891.491.190.690.390.289.989.789.689.489.289.188.788.488.188.188.388.488.788.889.089.289.890.1
0.10.82.23.74.44.84.95.05.05.05.04.94.84.74.74.64.54.44.34.24.14.03.93.83.73.73.63.53.43.33.23.13.02.92.82.72.62.52.42.32.22.1
242526272829303132333435363738394041424344454647484950515253545556575859606162636465
72.077.679.380.782.082.983.684.284.885.485.986.386.686.987.187.287.387.487.487.587.587.587.487.487.387.387.287.187.086.986.886.786.686.586.486.386.286.085.985.885.785.6
88.089.792.193.193.994.294.795.095.295.495.695.795.895.995.996.096.096.096.096.096.096.096.096.096.096.096.095.995.995.895.895.795.795.695.595.495.395.295.195.094.994.7
81.886.586.186.787.387.988.388.689.089.489.990.290.490.690.890.991.091.091.191.191.191.191.091.091.090.990.990.890.890.790.790.690.690.590.590.490.490.490.490.390.390.3
0.10.93.16.811.216.020.925.930.935.940.845.750.555.359.964.569.073.477.781.986.090.194.097.8101.6105.2108.8112.3115.6118.9122.1125.2128.2131.1133.9136.6139.3141.8144.2146.5148.8150.9
32.733.734.635.636.737.938.739.439.940.541.041.441.842.242.542.743.143.443.743.944.244.544.845.045.245.545.846.046.246.446.546.646.846.947.047.247.347.447.647.747.848.0
Breeder Flock Fertility, Hatchability & Chick WeightAge inWeeks
Chick Wt.gWeekly Cum. Weekly Cum. Weekly Cum. Weekly Cum.
Hatch of fertiles (%) Chick no./hen housedHatchability (%) Fertility (%)
88.090.092.894.095.095.596.096.596.696.796.796.796.796.696.696.596.596.496.296.296.196.196.095.795.595.395.094.794.594.294.093.893.593.092.291.590.690.089.288.587.386.5
72.078.080.082.084.085.086.087.088.089.090.089.989.889.689.489.188.988.688.387.987.587.186.786.385.985.585.184.784.383.983.482.982.481.981.480.980.479.979.478.978.477.9
12.09.07.06.05.04.54.03.53.53.33.33.33.33.43.43.53.53.63.83.83.93.94.04.34.54.75.05.35.55.86.06.26.57.07.58.08.59.09.510.010.511.0
0.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.5
242526272829303132333435363738394041424344454647484950515253545556575859606162636465
7.35.95.95.44.94.64.44.23.73.32.82.82.92.93.03.13.23.33.43.63.73.94.14.14.24.34.44.44.54.54.74.84.94.94.94.94.94.94.94.94.94.9
8.26.66.66.15.65.45.14.84.33.93.43.53.53.63.73.83.94.04.04.24.44.64.74.84.95.05.05.15.25.35.45.65.75.75.75.75.75.75.75.75.75.7
81.886.786.287.288.489.089.690.291.192.093.193.092.992.892.592.392.191.991.891.491.190.690.390.289.989.789.689.489.289.188.788.488.188.188.388.488.788.889.089.289.890.1
Hatchery InformationAge in Weeks
Fertility%
Hatchability% Infertile Early Mid Late
HOF%
EMBRYODIAGNOSIS %
Cobb
500™
FF
Par
ent R
earin
g M
anag
emen
t Rec
ord
(G
ram
s)
Com
pany
:
Rear
ing
Farm
:
Plac
emen
t Dat
e:Fe
mal
eM
ale
Num
ber P
lace
d:Fe
mal
eM
ale
Bree
der F
arm
:
Date
Mov
ed:
Fem
ale
Mal
e
Num
ber T
rans
ferr
ed:
Fem
ale
Mal
e
Poin
t-of-l
ay N
umbe
r:Fe
mal
eM
ale
Betw
een
2 to
22
wee
ks, w
eigh
ts s
houl
d be
take
n w
hen
the
crop
is e
mpt
y (d
ry b
ody
wei
ght)
or a
t lea
st 6
-7 h
ours
afte
r the
last
feed
ing.
AGE
WEE
KS1
23
45
67
89
1011
1213
1415
1617
1819
2021
2223
2425
DAYS
07
1421
2835
4249
5663
7077
8491
9810
511
211
912
613
314
014
715
416
116
817
5
FEMALEBODY WEIGHT
In
Sea
son
(D
ark-
out)
Ou
t of
Se
ason
FEMALEFEED
FEMALEMORTALITY
MALEBODY WEIGHT
Co
bb
MV
Male
MALEFEED
MALEMORTALITY
Num
ber P
lace
d:le
ema
F
te:
leem
aF
Plac
emen
t Da
arm
:ea
ring
F FaR
y:Co
mpa
n
SAYDWEE
KSE
AG
Ma
Ma
Hous
e Nu
mbe
r:
eig
, wks
eeee
n 2
to 2
2 w
Betw
2821
147
04
32
1
leM
aleM
a
Hous
e Nu
mbe
r:
en w
hen
the
crk
hts
shou
ld b
e ta
6356
4942
359
87
65
y Nu
mbe
r:
ht) o
r aei
gy
wy
bod
op is
em
pty
(dr
en w
hen
the
cr
oint
-of-l
aP
ed:
rer
ansff
er
Num
ber T
ed:
vte
Mo
Da
arm
:ee
der F
Br
9891
8477
7014
1312
1110
y Nu
mbe
r:
t lea
st 6
-7 h
ours
afte
r the
last
fht
) or a
leem
aF
ed:
leem
aF
leem
aF
133
126
119
112
105
1918
1716
15
.ee
ding
a
st f
leM
aleM
aleM
a
Hous
e Nu
mbe
r:
168
161
154
147
140
133
2423
2221
2019
175
168
2524
FEED
y)Ac
tual
(g/b
ird/d
ay)Gu
ide (
g/bi
rd/d
a
FEMALEY WEIGHT
mity
orUn
if
y Gain
eekl
WActu
al
Seas
onOu
t of
etar
gT
(Dar
k-ou
t)In
Sea
son
etar
gT
BODFEMALE
425
550
145
285
405
520
145
280
1070
875
975
660
770
1030
840
940
630
740
1430
1520
1250
1340
1390
1160
1490
1210
1300
1120
2220
1900
2050
1630
1750
2140
1520
1830
1980
1590
1690
1490
2960
3120
2540
2700
2220
2380
2850
3000
2450
2600
2140
2300
3240
3130
3120
3000
ALITY Y WEIGHT
mity
orUn
if
Actu
al
MV
Maleb
Cob
etar
gT
BODMALE
veCu
mul
atiy (%
)ee
klW
Bird
s#
of
T MORFEMALE
FEED
ype
eed
TFee
d En
ergy
F
FEMALE
525
690
150
340
1345
1090
1220
830
960
1845
1970
1595
1720
1470
2625
2355
2490
2095
2225
1970
3340
3470
2905
3050
2625
2765
3600
3470
ALITY
veCu
mul
atiy (%
)ee
klW
Bird
s#
of
T MORMALE
FEED
ype
eed
TFee
d En
ergy
F
y)Ac
tual
(g/b
ird/d
ay)Gu
ide (
g/bi
rd/d
a
MALEBOD
mity
orUn
if
empe
ratu
reT
ater C
onsu
mpt
ion
W
ht H
ours
Lig
Com
pany
:
Rear
ing
Farm
:
Plac
emen
t Dat
e:Fe
mal
eM
ale
Num
ber P
lace
d:Fe
mal
eM
ale
Bree
der F
arm
:
Date
Mov
ed:
Fem
ale
Mal
e
Num
ber T
rans
ferr
ed:
Fem
ale
Mal
e
Poin
t-of-l
ay N
umbe
r:Fe
mal
eM
ale
Age
at L
ight
Stim
ulat
ion:
Age
(wks
)Da
teFe
mal
eNo
.M
ale
No.
Tota
l Egg
s (%
HW)
Fem
ale
Feed
Fem
ale
BW In
Seas
on
Fem
ale
BW O
utof
Sea
son
Fem
ale
Actu
alBW
Mal
eFe
ed
Cobb
MV
Mal
eTa
rget
BW
Mal
eAc
tual
BWHa
tch
%
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42
Age
(wks
)Da
teFe
mal
eNo
.M
ale
No.
Tota
l Egg
s (%
HW)
Fem
ale
Feed
Fem
ale
BW In
Seas
on
Fem
ale
BW O
utof
Sea
son
Fem
ale
Actu
alBW
Mal
eFe
ed
Cobb
MV
Mal
eTa
rget
BW
Mal
eAc
tual
BWHa
tch
%
43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65
Cobb
500™
FF
Par
ent L
ayin
g M
anag
emen
t Rec
ord
(G
ram
s)
Num
ber P
lace
d:le
ema
F
te:
leem
aF
Plac
emen
t Da
arm
:ea
ring
F FR
y:Co
mpa
n
teo.
o.Nle
Ma
Nle
ema
FDa
(wks
)geA
Ma
Ma
Hous
e Nu
mbe
r:
(%HW
)Ac
tua
F
Sea
son
ofBW O
utleem
aF
Seas
onBW
Inleem
aF
eed
Fle
ema
Fl E
ggs
ota
T
leM
aleM
a
Hous
e Nu
mbe
r:
%BW
BWtc
hHa
lAc
tuale
Ma
et B
Wg
arTle
Mab
MV
Cob
eed
Fle
Ma
lAc
tuale
ema
F
ula
ht S
timt L
ige
aAg
y Nu
mbe
r:oi
nt-o
f-la
P
ed:
rer
ansff
er
Num
ber T
ed:
vte
Mo
Da
arm
:ee
der F
Br
%tch
teo.N
leem
aF
Da(w
ks)
geA
tion:
ula
y Nu
mbe
r:le
ema
F
ed:
leem
aF
leem
aF (%
HW)
Sea
son
o.ofBW
Out
ema
F
Seas
onBW
Inleem
aF
eed
Fle
ema
Fl E
ggs
ota
TN
leM
a
leM
aleM
aleM
a
Hous
e Nu
mbe
r:
BWBWActu
aleM
a
et B
Wg
arTle
Mab
MV
Cob
eed
Fle
Ma
lAc
tuale
ema
F
Sea
son
BW O
utleem
a
%BW
tch
Hal
Actu
ale
26
o.o.
252423222120te
NN
Da(w
ks)
(%HW
) S
easo
n
3340
3260
50.0
3240
3130
20.0
3120
3000
3.0
2960
2850
2700
2600
2540
2450
2380
2300
ofSe
ason
eed
F
%BW
BW
3690
3600
3470
3340
3050
2905
2765et B
Wg
arTee
dF
%
49
o.
484746454443te
NDa
(wks
)
(%HW
) S
easo
no.
4120
4080
66.1
4100
4060
67.3
4080
4040
68.5
4060
4020
69.7
4040
4000
70.9
4020
3980
72.1
4000
3960
73.3
ofSe
ason
eed
FN
BWBW
4470
4120
4450
4100
4430
4080
4405
4060
4380
4040
4360
4020
4335
4000
et B
Wg
arTee
dF
Sea
son
%BW
3433323130292827
3800
3750
82.8
3770
3715
83.8
3735
3680
84.8
3700
3645
85.8
3660
3600
86.0
3600
3540
85.0
3530
3460
82.0
3440
3360
73.0
4130
4110
4090
4060
4020
3950
3860
3770
5756555453525150
4230
4180
55.4
4220
4170
56.8
4210
4160
58.2
4200
4150
59.6
4190
4140
61.0
4175
4125
62.3
4160
4110
63.6
4140
4095
64.9
4655
4230
4630
4220
4610
4210
4585
4200
4565
4190
4540
4175
4515
4160
4495
4140
4140393837363534
3960
3920
75.6
3940
3900
76.7
3920
3880
77.8
3900
3860
78.8
3880
3835
79.8
3855
3810
80.8
3830
3780
81.8
3800
3750
82.8
4290
4270
4245
4220
4200
4175
4155
4130
6463626160595857
4300
4250
44.7
4290
4240
46.3
4280
4230
47.9
4270
4220
49.5
4260
4210
51.0
4250
4200
52.5
4240
4190
54.0
4230
4180
55.4
4810
4300
4790
4290
4765
4280
4745
4270
4720
4260
4700
4250
4675
4240
4655
4230
4241
3980
3940
74.5
3960
3920
75.6
4315
4290
6564
4310
4260
43.1
4300
4250
44.7
4835
4310
4810
4300
Betw
een
2 to
22
wee
ks, w
eigh
ts s
houl
d be
take
n w
hen
the
crop
is e
mpt
y (d
ry b
ody
wei
ght)
or a
t lea
st 6
-7 h
ours
afte
r the
last
feed
ing.
AGE
WEE
KS1
23
45
67
89
1011
1213
1415
1617
1819
2021
2223
2425
DAYS
07
1421
2835
4249
5663
7077
8491
9810
511
211
912
613
314
014
715
416
116
817
5
FEMALEBODY WEIGHT
In
Sea
son
(D
ark-
out)
Ou
t of
Se
ason
FEMALEFEED
FEMALEMORTALITY
MALEBODY WEIGHT
Co
bb
MV
Male
MALEFEED
MALEMORTALITY
Com
pany
:
Rear
ing
Farm
:
Plac
emen
t Dat
e:Fe
mal
eM
ale
Num
ber P
lace
d:Fe
mal
eM
ale
Bree
der F
arm
:
Date
Mov
ed:
Fem
ale
Mal
e
Num
ber T
rans
ferr
ed:
Fem
ale
Mal
e
Poin
t-of-l
ay N
umbe
r:Fe
mal
eM
ale
Cobb
500™
FF
Par
ent R
earin
g M
anag
emen
t Rec
ord
(P
ound
s)
SAYDWEE
KSE
AGNum
ber P
lace
d:le
ema
F
te:
leem
aF
Plac
emen
t Da
arm
:ea
ring
F FaR
y:Co
mpa
n
eig
, wks
eeee
n 2
to 2
2 w
Betw
2821
147
04
32
1
Ma
Ma
Hous
e Nu
mbe
r:
en w
hen
the
crk
hts
shou
ld b
e ta
6356
4942
359
87
65le
Male
Ma
Hous
e Nu
mbe
r:
ht) o
r aei
gy
wy
bod
op is
em
pty
(dr
en w
hen
the
cr
9891
8477
7014
1312
1110
y Nu
mbe
r:oi
nt-o
f-la
P
ed:
rer
ansf
rNu
mbe
r T
ed:
vte
Mo
Da
arm
:ee
der F
Br
t lea
st 6
-7 h
ours
afte
r the
last
fht
) or a
133
126
119
112
105
1918
1716
15
y Nu
mbe
r:le
ema
F
ed:
leem
aF
leem
aF
.ee
ding
a
st f
168
161
154
147
140
133
2423
2221
2019
leM
aleM
aleM
a
Hous
e Nu
mbe
r:
175
168
2524
FEED
y)da
(lb/1
00 bi
rds
Actu
al
y)da
(lb/1
00 bi
rds
Guid
e
FEMALEY WEIGHT
mity
orUn
if
y Gain
eekl
WActu
al
Seas
onOu
t of
etar
gT
(Dar
k-ou
t)In
Sea
son
etar
gT
BODFEMALE
0.94
1.21
0.32
0.63
0.89
1.15
0.32
0.62
2.36
1.93
2.15
1.46
1.70
2.27
1.85
2.07
1.39
1.63
3.15
3.35
2.76
2.95
3.06
2.56
3.28
2.67
2.87
2.47
4.89
4.19
4.52
3.59
3.86
4.72
3.35
4.03
4.37
3.51
3.73
3.28
6.53
6.88
5.60
5.95
4.89
5.25
6.28
6.61
5.40
5.73
4.72
5.07
7.14
6.90
6.88
6.61
ALITY Y WEIGHT
mity
orUn
if
Actu
al
MV
Maleb
Cob
etar
gT
BODMALE
veCu
mul
atiy (%
)ee
klW
Bird
s#
of
T MORFEMALE
FEED
ype
eed
TFee
d En
ergy
F
FEMALE
1.16
1.52
0.33
0.75
2.96
2.4
2.69
1.83
2.11
4.06
4.34
3.51
3.79
3.24
5.78
5.19
5.48
4.61
4.9
4.34
7.36
7.64
6.4
6.72
5.78
6.09
7.93
7.64
ALITY
veCu
mul
atiy (%
)ee
klW
Bird
s#
of
T MORMALE
FEED
ype
eed
TFee
d En
ergy
F
y)da
(lb/1
00 bi
rds
Actu
al
y)da
(lb/1
00 bi
rds
Guid
e
MALEBOD
mity
orUn
if
em
pera
ture
T
ater C
onsu
mpt
ion
W
ht H
ours
Lig
Com
pany
:
Rear
ing
Farm
:
Plac
emen
t Dat
e:Fe
mal
eM
ale
Num
ber P
lace
d:Fe
mal
eM
ale
Bree
der F
arm
:
Date
Mov
ed:
Fem
ale
Mal
e
Num
ber T
rans
ferr
ed:
Fem
ale
Mal
e
Poin
t-of-l
ay N
umbe
r:Fe
mal
eM
ale
Age
at L
ight
Stim
ulat
ion:
Age
(wks
)Da
teFe
mal
eNo
.M
ale
No.
Tota
l Egg
s (%
HW)
Fem
ale
Feed
Fem
ale
BW In
Seas
on
Fem
ale
BW O
utof
Sea
son
Fem
ale
Actu
alBW
Mal
eFe
ed
Cobb
MV
Mal
eTa
rget
BW
Mal
eAc
tual
BWHa
tch
%
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42
Age
(wks
)Da
teFe
mal
eNo
.M
ale
No.
Tota
l Egg
s (%
HW)
Fem
ale
Feed
Fem
ale
BW In
Seas
on
Fem
ale
BW O
utof
Sea
son
Fem
ale
Actu
alBW
Mal
eFe
ed
Cobb
MV
Mal
eTa
rget
BW
Mal
eAc
tual
BWHa
tch
%
43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65
Cobb
500™
FF
Par
ent L
ayin
g M
anag
emen
t Rec
ord
(P
ound
s)
Num
ber P
lace
d:le
ema
F
te:
leem
aF
Plac
emen
t Da
arm
:ea
ring
F FaR
y:Co
mpa
n
teo.
o.Nle
Ma
Nle
ema
FDa
(wks
)geA
Ma
Ma
Hous
e Nu
mbe
r:
(%HW
)Ac
tua
F
Sea
son
ofBW O
utleem
aF
Seas
onBW
Inleem
aF
eed
Fle
ema
Fl E
ggs
ota
T
leM
aleM
a
Hous
e Nu
mbe
r:
%BW
BWtc
hHa
lAc
tuale
Ma
et B
Wg
arTle
Mab
MV
Cob
eed
Fle
Ma
lAc
tuale
ema
F
ula
ht S
timt L
ige
aAg
y Nu
mbe
r:oi
nt-o
f-la
P
ed:
rer
ansf
rNu
mbe
r T
ed:
vte
Mo
Da
arm
:ee
der F
Br
%tch
teo.N
leem
aF
Da(w
ks)
geA
tion:
ula
y Nu
mbe
r:le
ema
F
ed:
leem
aF
leem
aF (%
HW)
Sea
son
o.ofBW
Out
ema
F
Seas
onBW
Inleem
aF
eed
Fle
ema
Fl E
ggs
ota
TN
leM
a
leM
aleM
aleM
a
Hous
e Nu
mbe
r:
BWBWActu
aleM
a
et B
Wg
arTle
Mab
MV
Cob
eed
Fle
Ma
lAc
tuale
ema
F
Sea
son
BW O
utleem
a
%BW
tch
Hal
Actu
ale
26
o.o.
252423222120te
NN
Da(w
ks)
(%HW
) S
easo
n
7.36
7.19
50.0
7.14
6.90
20.0
6.88
6.61
3.0
6.53
6.28
5.95
5.73
5.60
5.40
5.25
5.07
ofSe
ason
eed
F
%BW
BW
8.13
7.93
7.64
7.36
6.72
6.40
6.09et
BW
garT
eed
F
%
49
o.
484746454443te
NDa
(wks
)
(%HW
) S
easo
no.
9.08
8.99
66.1
9.04
8.95
67.3
8.99
8.91
68.5
8.95
8.86
69.7
8.91
8.82
70.9
8.86
8.77
72.1
8.82
8.73
73.3
ofSe
ason
eed
FN
BWBW
9.85
9.08
9.80
9.04
9.76
8.99
9.70
8.95
9.65
8.91
9.60
8.86
9.55
8.82
et B
Wg
arTee
dF
Sea
son
%BW
3433323130292827
8.38
8.27
82.8
8.31
8.19
83.8
8.23
8.11
84.8
8.16
8.04
85.8
8.07
7.94
86.0
7.94
7.80
85.0
7.78
7.63
82.0
7.58
7.41
73.0
9.10
9.05
9.01
8.94
8.85
8.70
8.50
8.30
5756555453525150
9.33
9.22
55.4
9.30
9.19
56.8
9.28
9.17
58.2
9.26
9.15
59.6
9.24
9.13
61.0
9.20
9.09
62.3
9.17
9.06
63.6
9.13
9.03
64.9
10.25
9.33
10.20
9.30
10.15
9.28
10.10
9.26
10.06
9.24
10.00
9.20
9.94
9.17
9.90
9.13
4140393837363534
8.73
8.64
75.6
8.69
8.60
76.7
8.64
8.55
77.8
8.60
8.51
78.8
8.55
8.45
79.8
8.50
8.40
80.8
8.44
8.33
81.8
8.38
8.27
82.8
9.45
9.41
9.35
9.30
9.25
9.20
9.15
9.10
6463626160595857
9.48
9.37
44.7
9.46
9.35
46.3
9.44
9.33
47.9
9.41
9.30
49.5
9.39
9.28
51.0
9.37
9.26
52.5
9.35
9.24
54.0
9.33
9.22
55.4
10.59
9.48
10.55
9.46
10.50
9.44
10.45
9.41
10.40
9.39
10.35
9.37
10.30
9.35
10.25
9.33
4241
8.77
8.69
74.5
8.73
8.64
75.6
9.50
9.45
6564
9.50
9.39
43.1
9.48
9.37
44.7
10.65
9.50
10.59
9.48
Recommended nutrient levels for Cobb500 Parent Stock Breeders
Phase
Age (days)
Unit
aIf the energy needs to be ad
justed
for local conditions, then all other nutrients (protein/amino acids) need to be ad
justed
at the sam
e ratio.
MJ/kg
kcal/kg
kcal/lb
Developer
106 - 1st egg
Metabolizable
Energy
a
Digestible Amino Acids
Crude Protein
Calcium
Av. Phosphorus
Sodium
Chloride
Potassium
Linoleic Acid
Dig. Lysine
Dig. Methionine
Dig. M + C
Dig. Tryptophan
Dig. Threonine
Dig. Arginine
Dig. Valine
Dig. Isoleucine
11.92
2,850
1,293
19.00
0.95
0.45
0.15 - 0.24
0.15 - 0.24
0.60
1.00
11.30
2,700
1,225
14.50
0.95
0.42
0.15 - 0.24
0.15 - 0.24
0.60
1.00
11.72
2,800
1,270
15.00
1.20
0.42
0.15 - 0.24
0.15 - 0.24
0.60
1.00
11.72
2,800
1,270
15.00
3.00
0.42
0.15 - 0.24
0.15 - 0.24
0.60
1.25
11.72
2,800
1,270
14.50
3.20
0.38
0.15 - 0.24
0.15 - 0.24
0.60
1.25
11.30
2,700
1,225
13.00
0.95
0.42
0.15 - 0.24
0.15 - 0.24
0.60
1.00
0.93
0.42
0.70
0.20
0.65
0.98
0.67
0.64
0.60
0.31
0.51
0.13
0.45
0.66
0.45
0.42
0.63
0.33
0.54
0.14
0.47
0.69
0.47
0.44
0.66
0.34
0.57
0.15
0.50
0.73
0.50
0.46
0.63
0.32
0.55
0.14
0.47
0.69
0.47
0.44
0.50
0.28
0.48
0.12
0.44
0.55
0.38
0.40
Grower
29 - 105
Starter
0 - 28
Breeder 2
>267
Breeder 1
1st egg - 266
Male
>168
% % % % % % % % % % % % % % %
Nutrient Levels
Digestible Amino Acid LevelsRecommended digestible amino acid levels
based on amino acid/lysine ratios
Lysine
Methionine
M + C
Tryptophan
Threonine
Arginine
Valine
Isoleucine
PhaseAge (days)
100
52
85
22
75
110
75
70
100
45
75
21
70
105
72
68
Grower/Developer29 - 1st egg
Starter0 - 28
Breeder1st egg+
Male155+
100
55
95
24
87
110
75
80
100
52
87
22
75
110
75
70
KIU = thousand international units; g = gramsSupplementary levels of vitamins and trace elements should always be reviewed to ensure totallevels do not exceed those set in local legislation.
Supplementary Vitamins and Trace ElementsRecommended supplementary levels of vitamins
and trace elements per metric tonne basis
Vit. A (Maize Diets)
Vit. A (Wheat Diets)
Vit. D3
Vit. E
Vit. K
Thiamine
Riboflavin
Pantothenic Acid
Niacin
Pyridoxine
Folic Acid
Vit. B12
Biotin (Maize Diets)
Biotin (Wheat Diets)
Choline
Manganese
Zinc
Iron
Copper
Iodine
Selenium
Phase
10,000
11,000
3,500
100
3.0
2.75
8.0
15
40
3.0
2.0
0.025
0.25
0.30
500
100
100
20-50
10-15
1.5
0.30
KIU
KIU
KIU
KIU
g
g
g
g
g
g
g
g
g
g
g
g
g
g
g
g
g
Starter /Developer /Males
Unit Breeders inProduction
12,000
13,000
3,500
100
6.0
3.0
13
20
50
6.0
3.0
0.035
0.30
0.375
500
120
110
40-55
10-15
2.0
0.30
cobbcares.com
L-2010-07 EN : January 2019
Bird Health and Well-BeingCobb has a long-standing commitment tothe health and well-being of the chickensthat we breed, raise and distributeworldwide.
