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Age influence on quality of shell and penetration in bacterial laying lightweight eggs

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Academic year: 2019

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Table 1.  Egg  weight  (ew),  specific  gravity  (sg),  shell  percentage  (sp),  shell  thickness  (st)  of  eggs  from  laying hens of varying ages
Figure 1. Presence of bacteria in the medial portion of the shell (arrows), first collection
Figure 2. Presence of bacterial colonies in the agar (arrows). A – 51 weeks, 9 th  collection; B – 39 weeks,  13 th  collection; C  –  21 weeks, 4 th  collection; D  –  Colonies without CTT (pilot)
Figure 3. First detection in days of the bacterial samples in eggs of evaluated groups
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