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Table 4 Overview of gross lesions in broilers from Progenies A, B and C

From: Longitudinal study on background lesions in broiler breeder flocks and their progeny, and genomic characterisation of Escherichia coli

 

Progeny A

(n = 54)

Progeny B

(n = 52)

Progeny C

(n = 48)

Total

(n = 154)

General

 Euthanised

44 (81.5%)

47 (90.4%)

30 (62.5%)

121 (78.6%)

 Age (days)

  Mean

8 ± 1.4

8.1 ± 2.4

6.1 ± 1.5

7.4 ± 2

  Min

5

5

4

4

  Median

8

8

7

7

  Max

10

11

8

11

 BW (g), day

  4

50 ± 19

50 ± 19

  5

97 ± 27

65 ± 18

72 ± 24

  6

156 ± 13

135 ± 10

80 ± 32

119 ± 39

  7

133 ± 44

144 ± 48

140 ± 46

  8

147 ± 55

193 ± 56

164 ± 20

166 ± 50

  9

139 ± 61

139 ± 61

  10

187 ± 91

193 ± 58

191 ± 68

  11

253 ± 31

253 ± 31

 Gender

  Male

22 (40.7%)

20 (38.5%)

19 (39.6%)

61 (39.6%)

  Female

32 (59.3%)

32 (61.5%)

29 (60.4%)

93 (60.4%)

Dehydration

15 (27.8%)

12 (23.1%)

17 (35.4%)

44 (28.6%)

Peri-cloacal urate

2 (3.7%)

6 (11.5%)

7 (14.6%)

15 (9.7%)

Umbilicus and yolk sac

 Unhealed umbilicus

  Total

14 (25%)

15 (28.8%)

23 (47.9%)

52 (33.8%)

  Open

1 (1.9%)

0 (0%)

1 (2.1%)

2 (1.3%)

  String

11 (20.4%)

13 (25%)

16 (33.3%)

40 (26%)

  Button

2 (3.7%)

2 (3.8%)

6 (12.5%)

10 (6.5%)

 Omphalitisb

3 (5.6%)

2 (3.8%)

7 (14.6%)

12 (7.8%)

 Yolksacculitisc

4 (7.4%)

9 (17.3%)

11 (22.9%)

24 (15.6%)

 Retained yolk sacd

3 (8.6%)

5 (15.6%)

1 (2.1%)

9 (11.8%)

Respiratory tract

 Tracheal changese

3 (5.6%)

1 (1.9%)

2 (4.2%)

6 (3.9%)

 Pulmonary changesf

38 (70.4%)

39 (75%)

34 (70.8%)

111 (72.1%)

 Airsacculitis

3 (5.6%)

1 (1.9%)

1 (2.1%)

4 (2.6%)

Coelomic cavity

 Pericarditisg

3 (5.6%)

6 (11.5%)

6 (12.5%)

15 (9.7%)

 Perihepatitisg

2 (3.7%)

2 (3.8%)

7 (14.6%)

11 (7.1%)

 Peritonitisg

3 (5.6%)

5 (9.6%)

6 (12.5%)

14 (9.1%)

 Ascites

4 (7.4%)

4 (7.7%)

2 (4.2%)

10 (6.5%)

 Renal changesh

20 (37%)

14 (26.9%)

17 (35.4%)

51 (33.1%)

Gastrointestinal tract

 Feed in crop

51 (94.4%)

44 (84.6%)

33 (68.8%)

128 (83.1%)

 Empty/sparse GI content

5 (9.3%)

8 (15.4%)

15 (31.3%)

28 (18.2%)

 Ulcus ventriculi

1 (1.6%)

3 (5.8%)

5 (10.4%)

9 (5.8%)

  1. Continuous data are presented with mean ± standard deviation
  2. BW, bodyweight; GI, gastrointestinal; n, number
  3. aPatent opening of the umbilicus without complications, or with entrapment of tissue forming either a string or a button
  4. bPresence of hyperaemia and/or oedema in the umbilical area
  5. cAlterations to the yolk consistency, e.g., watery, lumpy, thickened or inspissated yolk possibly with changes to the colour or odour as well as excessive hyperaemia
  6. dPresence of the yolk sac in chickens older than seven days
  7. ePresence of hyperaemia, haemorrhage, exudate, or excessive amounts of mucus with a turbid appearance
  8. fOedema, consolidation and/or exudate
  9. gPresence of fibrinous, purulent or fibrinopurulent exudate or fibrotic repair
  10. hSwelling of the kidneys and/or increased tubular pattern
  11. iPresence of exudate