ROBUST RESULTS

Bovans White
ProductGuide
Cage Production System

Achieving the full genetic potential of the Bovans White

 The Story of
the Bovans White
By the 1950s traditional Dutch poultry
breeders were facing increased competition
from larger American companies. So in 1954
four family owned layer breeding farms
formed a new breeding company called
Bovans Organisatie N.V. (Bovans Poultry
Breeders). These hard working, farming
families were the Bongers, Van Duijnhoven,
Van Lankveld and Van der Linden (one Bo and
three Vans = Bovans).
The founders of Bovans were Harry van Duijnhoven
and his wife Nora. The Bovans breeding center was at
Harry van Duijnhoven’s farm at Stevensbeek and their
Bovans layers reflected the robust and hardworking
ethics of the four families.

The original Bovans logo, which is still in use,

was designed by Harry van Duijnhoven’s brother.
Bovans Poultry Breeders soon developed into a
strong and successful breeder, selling its birds in
Europe, the America’s, Africa and the Middle East.

2
THE BOVANS WHITE TODAY
The Bovans White is an exceptionally balanced layer,
combining high peak performance, feed efficiency and
livability.

Robust and easy to manage the Bovans White enables

egg producers to achieve their desired egg weight level,
for table eggs or processing.

A productive layer with a flat egg weight curve, a very

strong shell and excellent laying persistency, the Bovans
White is suitable for longer laying cycles, and is adaptable
to differing environments and management systems.

Flat egg weight curve

Superior egg production

Robust and easy to manage

Exceptionally balanced bird

Strong bottom line results

Product Guide bovans.com 3

 INTRODUCTION
Many years of investment in genetic research and development have
resulted in layers with excellent performance traits such as livability,
production and egg quality.

These highly favourable genetic characteristics can only be fully realized

when layers are supported with good management practices, which
include, but are not limited to, good quality feed, housing and constant
attention to the birds behaviour and welfare.

The purpose of this product guide is to help producers to gain the best
possible results from their investment. This will be achieved by providing
conditions in which the layers can thrive. The information supplied in
this publication is based on the analysis of extensive research and field
results, produced over time and with many years of experience.

We do recognize that many egg producers have developed their own

management programs, as a result of their experience with specific
housing types, climate, feed, market conditions. Therefore do not
hesitate to use your own experience in conjunction with the guidelines
in this guide. And of course, do not hesitate to consult our distributors
who will be happy to help in any way they can.

We are constantly seeking to develop our breeding program and

welcome feedback from the field. Please send your technical results
to layinghens@hendrix-genetics.com. Excel files are available on request
to help you to follow the flock’s performance and record information.

4
PRODUCTION
SUMMARY

Laying Period 18-100 weeks

Livability 93 %

Age at 50% production 143 days

Peak of production 96 %

Average egg weight 62.5 g

Eggs hen housed 476

Egg mass hen housed 29.7 kg

Average feed intake 107 g/day

Cum. feed conversion rate 2.04 kg/kg

Body weight 1713 g

Shell strength 4200 g/cm²

Haugh units 83

Product Guide bovans.com 5

 Bovans White
DEKALB WHITE
REARING TABLE
REARING TABLE
Age in Age in Feed intake per Feed intake per Body weight
weeks days bird per day (g) bird cum. (g) (g)

Minimum Maximum Minimum Maximum Minimum Maximum

1 0-7 6 8 40 54 62 65

2 8-14 13 15 128 156 126 132

3 15-21 19 21 260 302 193 203

4 22-28 25 27 432 488 264 278

5 29-35 30 32 641 711 338 356

6 36-42 35 37 882 966 415 436

7 43-49 39 41 1,155 1,253 493 518

8 50-56 43 45 1,455 1,567 572 602

9 57-63 46 48 1,780 1,906 652 686

10 64-70 50 52 2,128 2,268 733 770

11 71-77 53 55 2,498 2,652 812 854

12 78-84 56 58 2,888 3,056 891 937

13 85-91 59 61 3,298 3,480 968 1,017

14 92-98 61 63 3,727 3,923 1,042 1,096

15 99-105 64 66 4,176 4,386 1,114 1,171

16 106-112 67 69 4,646 4,870 1,181 1,242

17 113-119 70 72 5,139 5,377 1,244 1,308

18 120-126 76 78 5,670 5,922 1,302 1,369

The information supplied in this guide is based on many actual

flock results obtained under good environment and managing
conditions. It is presented as a service to our customers and should
be used as a guide only. It does not constitute a guarantee or
warranty of performance in any way.

6
Bovans White
REARING GRAPH

Feedconsumption
Feed
110 consumptionin g in g

100

90

80

70

60
50

40

30

20

10

0
18
17
16
15
14
13
12
11

in weeks
10

in weeks
Age Age
9
8
7
6
5
4
3
2
1
1400

1200

1000

800

600

400

200

Body weight in g
Bodyweight in g

Product Guide bovans.com 7

 Bovans White
PRODUCTION TABLE 1
PER HEN DAY
Age in % Lay Egg Egg mass Feed intake Feed
weeks weight per day per day conversion
(g) (g) (g) per week

18 0.0 0.0 0.0 77 0.00

19 6.2 42.9 2.6 82 31.17
20 41.5 46.1 19.1 89 4.66
21 66.1 48.8 32.2 95 2.96
22 81.8 51.0 41.7 101 2.41
23 90.4 53.0 47.9 104 2.18
24 94.1 54.6 51.4 105 2.05
25 94.9 56.0 53.1 106 1.99
26 95.3 57.1 54.4 106 1.95
27 95.6 58.0 55.5 107 1.92
28 95.9 58.8 56.3 107 1.90
29 96.1 59.3 57.0 107 1.88
30 96.2 59.8 57.5 108 1.87
31 96.2 60.1 57.9 108 1.86
32 96.2 60.4 58.1 108 1.86
33 96.2 60.6 58.3 108 1.86
34 96.1 60.8 58.4 108 1.86
35 96.0 60.9 58.4 109 1.86
36 95.8 61.0 58.4 109 1.86
37 95.7 61.1 58.4 109 1.86
38 95.5 61.1 58.3 109 1.87
39 95.2 61.2 58.3 109 1.87
40 95.0 61.3 58.2 109 1.88
41 94.7 61.4 58.1 109 1.88
42 94.5 61.5 58.1 109 1.89
43 94.2 61.6 58.0 110 1.89
44 93.9 61.7 57.9 110 1.89
45 93.6 61.8 57.8 110 1.90
46 93.4 61.9 57.7 110 1.90
47 93.1 62.0 57.7 110 1.90
48 92.8 62.1 57.6 110 1.91
49 92.5 62.2 57.5 110 1.91
50 92.2 62.3 57.4 110 1.92
51 91.9 62.3 57.3 110 1.92
52 91.6 62.4 57.2 110 1.92
53 91.3 62.5 57.1 110 1.93
54 91.0 62.6 57.0 110 1.93
55 90.7 62.7 56.9 110 1.93
56 90.4 62.8 56.8 110 1.94
57 90.1 62.9 56.7 110 1.94
58 89.8 63.0 56.6 110 1.94
59 89.4 63.1 56.4 110 1.95

8
Bovans White
PRODUCTION TABLE 1
PER HEN HOUSED
Age in Eggs Egg mass Feed Feed % Body
weeks per bird cum. intake conversion Livability weight
cum. (kg) cum. (kg) cum. (g)

18 0 0.0 0.5 0.00 99.9 1,335

19 0 0.0 1.1 60.25 99.8 1,388
20 3 0.2 1.7 11.42 99.8 1,435
21 8 0.4 2.4 6.37 99.7 1,473
22 14 0.7 3.1 4.65 99.6 1,503
23 20 1.0 3.8 3.82 99.5 1,519
24 26 1.4 4.6 3.36 99.4 1,535
25 33 1.7 5.3 3.07 99.3 1,550
26 40 2.1 6.0 2.87 99.3 1,564
27 46 2.5 6.8 2.72 99.2 1,577
28 53 2.9 7.5 2.61 99.1 1,589
29 60 3.3 8.3 2.52 99.0 1,601
30 66 3.7 9.0 2.45 98.9 1,611
31 73 4.1 9.8 2.39 98.9 1,620
32 80 4.5 10.5 2.34 98.8 1,629
33 86 4.9 11.2 2.30 98.7 1,637
34 93 5.3 12.0 2.27 98.6 1,645
35 100 5.7 12.7 2.24 98.5 1,652
36 106 6.1 13.5 2.22 98.4 1,658
37 113 6.5 14.2 2.19 98.4 1,663
38 119 6.9 15.0 2.18 98.3 1,668
39 126 7.3 15.7 2.16 98.2 1,673
40 132 7.7 16.5 2.14 98.1 1,677
41 139 8.1 17.2 2.13 98.0 1,681
42 145 8.5 18.0 2.12 98.0 1,684
43 152 8.9 18.7 2.11 97.9 1,687
44 158 9.3 19.5 2.10 97.8 1,689
45 165 9.7 20.2 2.09 97.7 1,692
46 171 10.1 21.0 2.08 97.6 1,694
47 177 10.5 21.7 2.08 97.5 1,695
48 184 10.9 22.5 2.07 97.5 1,697
49 190 11.3 23.2 2.07 97.4 1,698
50 196 11.6 24.0 2.06 97.3 1,699
51 203 12.0 24.7 2.06 97.2 1,699
52 209 12.4 25.5 2.05 97.1 1,700
53 215 12.8 26.2 2.05 97.0 1,701
54 221 13.2 27.0 2.04 97.0 1,701
55 227 13.6 27.7 2.04 96.9 1,701
56 233 14.0 28.5 2.04 96.8 1,701
57 240 14.4 29.2 2.04 96.7 1,701
58 246 14.7 30.0 2.03 96.6 1,701
59 252 15.1 30.7 2.03 96.6 1,701

Product Guide bovans.com 9

 Bovans White
PRODUCTION TABLE 2
PER HEN DAY
Age in % Lay Egg Egg mass Feed intake Feed
weeks weight per day per day conversion
(g) (g) (g) per week

60 89.1 63.2 56.3 110 1.95

61 88.7 63.3 56.2 110 1.96
62 88.4 63.4 56.1 110 1.96
63 88.1 63.5 55.9 110 1.97
64 87.7 63.6 55.8 110 1.97
65 87.4 63.7 55.7 110 1.98
66 87.1 63.8 55.6 110 1.98
67 86.8 63.9 55.5 110 1.99
68 86.4 64.0 55.3 110 1.99
69 86.1 64.1 55.2 110 1.99
70 85.8 64.2 55.1 110 2.00
71 85.5 64.3 54.9 110 2.00
72 85.1 64.4 54.8 110 2.01
73 84.8 64.5 54.7 110 2.01
74 84.5 64.6 54.6 110 2.02
75 84.2 64.7 54.4 110 2.02
76 83.8 64.8 54.3 110 2.03
77 83.5 64.9 54.2 110 2.03
78 83.2 65.0 54.0 110 2.04
79 82.9 65.1 53.9 110 2.04
80 82.5 65.2 53.8 110 2.05
81 82.2 65.3 53.7 110 2.05
82 81.9 65.4 53.5 110 2.06
83 81.6 65.5 53.4 110 2.06
84 81.2 65.6 53.3 110 2.07
85 80.9 65.7 53.1 110 2.08
86 80.6 65.8 53.0 110 2.08
87 80.2 65.9 52.8 110 2.09
88 79.9 65.9 52.7 110 2.09
89 79.6 66.0 52.6 110 2.10
90 79.3 66.1 52.4 110 2.10
91 78.9 66.2 52.3 110.3 2.11
92 78.6 66.3 52.2 110.3 2.12
93 78.3 66.4 52.0 110.3 2.12
94 78.0 66.5 51.9 110.3 2.13
95 77.6 66.6 51.7 110.3 2.13
96 77.3 66.7 51.6 110.3 2.14
97 77.0 66.8 51.4 110.4 2.14
98 76.7 66.9 51.3 110.4 2.15
99 76.3 67.0 51.2 110.4 2.16
100 76.0 67.1 51.0 110.4 2.16

10
Bovans White
PRODUCTION TABLE 2
PER HEN HOUSED
Age in Eggs Egg mass Feed Feed % Body
weeks per bird cum. intake conversion Livability weight
cum. (kg) cum. (kg) cum. (g)

60 258 15.5 31.5 2.03 96.5 1,701

61 264 15.9 32.2 2.03 96.4 1,701
62 270 16.3 32.9 2.03 96.3 1,702
63 276 16.6 33.7 2.03 96.2 1,702
64 281 17.0 34.4 2.02 96.1 1,702
65 287 17.4 35.2 2.02 96.1 1,702
66 293 17.8 35.9 2.02 96.0 1,703
67 299 18.1 36.6 2.02 95.9 1,703
68 305 18.5 37.4 2.02 95.8 1,703
69 311 18.9 38.1 2.02 95.7 1,704
70 316 19.2 38.9 2.02 95.7 1,704
71 322 19.6 39.6 2.02 95.6 1,704
72 328 20.0 40.3 2.02 95.5 1,705
73 333 20.3 41.1 2.02 95.4 1,705
74 339 20.7 41.8 2.02 95.3 1,705
75 345 21.1 42.5 2.02 95.2 1,705
76 350 21.4 43.3 2.02 95.2 1,706
77 356 21.8 44.0 2.02 95.1 1,706
78 361 22.1 44.7 2.02 95.0 1,706
79 367 22.5 45.5 2.02 94.9 1,707
80 372 22.9 46.2 2.02 94.8 1,707
81 378 23.2 46.9 2.02 94.8 1,707
82 383 23.6 47.7 2.02 94.7 1,708
83 389 23.9 48.4 2.02 94.6 1,708
84 394 24.3 49.1 2.02 94.5 1,708
85 399 24.6 49.8 2.02 94.4 1,709
86 405 25.0 50.6 2.02 94.3 1,709
87 410 25.3 51.3 2.03 94.3 1,709
88 415 25.7 52.0 2.03 94.2 1,709
89 420 26.0 52.8 2.03 94.1 1,710
90 426 26.4 53.5 2.03 94.0 1,710
91 431 26.7 54.2 2.03 93.9 1,710
92 436 27.1 54.9 2.03 93.9 1,711
93 441 27.4 55.7 2.03 93.8 1,711
94 446 27.7 56.4 2.03 93.7 1,711
95 451 28.1 57.1 2.03 93.6 1,712
96 456 28.4 57.8 2.04 93.5 1,712
97 461 28.7 58.5 2.04 93.4 1,712
98 466 29.1 59.3 2.04 93.4 1,712
99 471 29.4 60.0 2.04 93.3 1,713
100 476 29.7 60.7 2.04 93.2 1,713

Product Guide bovans.com 11

 Livability
100 85 3750

12
90 80 3500

80 75 3250

70 70 3000
Laying Average
rate egg
60 65 weight
2750
Bovans White

50 60 2500

Body
40 55 2250
weight

30 50 2000

20 45 1750
PRODUCTION GRAPHS

10 40 1500

0 35 1250

16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
62
64
66
68
70
72
74
76
78
80
82
84
86
88
90
92
94
96
98
100

Age in weeks
 Cum. no. of Feed conversion
eggs per HH g/egg
Egg3.20
mass 70 500 150
in g/day
140
3.05 65 450 130
120
2.90 60 400 110
100
Feed
2.75 55 350 90
conversion
kg/kg 80
Bovans White

2.60 50 300 70

Product Guide
60
2.45 45 250 50
40
2.30 40 200 30
20
2.15 35 150 10
0
2.00 30 100 -10

bovans.com
-20
PRODUCTION GRAPHS

1.85 25 50 -30
-40
1.70 20 0 -50

16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
62
64
66
68
70
72
74
76
78
80
82
84
86
88
90
92
94
96
98
100

13
Age in weeks
 NOTES

14
CONVERSION
TABLE
1 mtr. =3,282 feet 1 foot =0,305 mtr.
1 sq. mtr. =10,76 sq. feet 1 sq. foot =0,093 sq. mtr.
1 cub. mtr. =35,316 cub. feet 1 cub. foot =0,028317 cub. m.
1 cm. =0,394 inches 1 inch =2,54 cm.
1 sq. cm. =0,155 sq. inch 1 sq. inch =6,45 sq.cm.
1 kg. =2,205 lbs. 1 lb. =0,454 kg.
1 g. =0,035 ozs. 1 oz. =28,35 g.
1 ltr. =0,22 gallons 1 gallon =4,54 ltr.

1 bird per square metre =10,76 square feet per bird

3 birds per square metre =3,59 square feet per bird
4 birds per square metre =2,69 square feet per bird
5 birds per square metre =2,15 square feet per bird
7 birds per square metre =1,54 square feet per bird
11 birds per square metre =0,98 square feet per bird
13 birds per square metre =0,83 square feet per bird

1 cubic meter/kilogram/hour =16,016 cubic feet/lb./hour

1 cubic foot/lb./hour =0,0624 cubic meter/kilogram/hour

F° =9/5 °C+32 °C =5/9 (°F-32)

45 °C =113 °F 22 °C =72 °F 10 °C =50 °F
40 °C =104 °F 20 °C =68 °F 8 °C =46 °F
35 °C =95 °F 18 °C =64 °F 6 °C =43 °F
30 °C =86 °F 16 °C =61 °F 4 °C =39 °F
27 °C =81 °F 14 °C =57 °F 2 °C =36 °F
24 °C =75 °F 12 °C =54 °F 0 °C =32 °F

1 Joule per second = 1 Watt = Volt x Ampere

1 KJ =1000J
1 MJ =1000KJ
1 MJ =239 Kcal
1 Kcal =4.2 KJ
1 KWh =3.6MJ - 860 Kcal
1 BTU =1055J

Warranty Disclaimer
This product guide for layers has been prepared by Institut de Sélection Animale B.V. and
its affiliates (“ISA”) with the greatest possible care and dedication to inform and assist ISA’s
customers on the various manners of production to improve their production results while
using ISA products. However, specific circumstances at the farm of the customer may
impact the usability and reliability of the statements and information mentioned in this
product guide. No implied or explicit guarantees are given by ISA as to the accuracy and
completeness of the provided information in this product guide. Applying the information
as stated in this product guide in the customers’ production environment remains a
decision of the customer, to be taken at its sole discretion. ISA will not be liable for any
losses or damages whatsoever, whether in contract, tort or otherwise arising from reliance
on information contained in this product guide.

L0210-1

Product Guide bovans.com 15

 bovans.com
P.O. Box 114
5830 AC Boxmeer
The Netherlands - EU

+31 485 319 111

bovans@hendrix-genetics.com

Backed by a strong portfolio of leading

brands, Hendrix Genetics provides expertise
and resources to producers globally, with
operations and joint ventures in 24 countries.

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