Table 3.
Morphology measurements of shell gland and duodenum from two layer hybrids
| LSL and LB | Statistical significance (P value) |
||||||||
|---|---|---|---|---|---|---|---|---|---|
| 21 week (n = 10) |
29 week (n = 10) |
49 week (n = 10) |
70 week (n = 10) |
LB (n = 20) |
LSL (n = 20) |
Age | Hybrid | Age* Hybrid |
|
| Number of capillaries/mm2 in shell gland | 289 ± 13.4b | 370 ± 20.4a | 332 ± 19.3ab | 358 ± 20.8ab | 322 ± 13,8 | 351 ± 14.9 | 0.02 | 0.2 | 0.2 |
| Number of CA- positive capillaries/mm2 in shell gland | 0.1 ± 0.06c | 0.4 ± 0.25bc | 10.9 ± 5.08ab | 22.4 ± 9.03a | 8.2 ± 4.65 | 8.7 ± 3.56 | 0.002 | 0.5 | 0.9 |
| Mucosal height in the duodenum (µm)d | 1387 ± 65.9 | 1376 ± 44.9 | 1582 ± 93.1 | 1436 ± 67.1 | 1569 ± 53.6a | 1322 ± 29.2b | 0.03 | < 0.0001 | 0.006 |
| Depth of crypt of Lieberkühn in duodenum (µm)e | 153 ± 7.0 | 145 ± 8.0 | 132 ± 8.0 | 137 ± 7.8 | 142 ± 4.7 | 141 ± 6.4 | 0.3 | 0.9 | 0.4 |
Lohmann Selected Leghorn (LSL) and Lohmann Brown (LB), at four different ages (21, 29, 49, 70 weeks) during the production period. Mean ± standard error. CA carbonic anhydrase. Values without a superscript or with the same letter (a, b or c) do not differ significantly (P > 0.05)
dMeasured from muscularis mucosa to top of the villi
eMeasured from muscularis mucosa to base of villi