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Feather condition

Total feather condition

Body condition scoring conducted at 20 weeks of age on 2 pens of control (pen 1 and 2) and 2 pens of hatchery chickens (pen 3 and 4). The hatchery chickens underwent normal hatchery routines, whereas the control group did not. Combined feather, comb and wattle scores

Assessment of body condition at the end of experimentation showed that there was a significant difference in combined feather, comb and wattle scores different pens. A post-hoc Dunn-test showed that hatchery pens had significantly higher feather damage than control pens (p<0.05). The results were not significant when comparing pens from the same treatment group (p>0.1).When comparing the total feather damage between pens for just males the difference was also significant. A post-hoc Dunn-test was also conducted on the male data, with significant or tendency towards differences between pens containing chickens from different treatment groups (p<0.1). There were no significant differences between pens of the same treatment groups (p>0.1). There were no significant differences between pens when comparing just females (p>0.1). When comparing sexes within treatment groups hatchery males had significantly higher feather condition scores than hatchery females (p<0.05), however, there was no significant difference between control male and females (p>0.1).

Feather condition

Feather condition scores

When analysing the feather scores separately, hatchery pens also had significantly higher feather damage than control pens (p<0.05). A post-hoc Dunn-test showed significant differences between pen 2 and 3, and pen 2 and 4 (p<0.05). A tendency was found between pen 1 and 3 (p<0.1). There was no significant differences between; pen 1 and 2, pen 1 and 4, and pen 3 and 4 (p>0.1). Hatchery males also had significantly higher feather damage than control males (p<0.05). Analysis of pen differences found a significant difference between pen 2 and 3 (p<0.05), and tendencies were found between pen 1 and 3, and pen 2 and 4 (p<0.1). There were no significant differences between the other pens (p>0.1). There were also no significant difference when comparing females of different treatment groups, control males and females, and hatchery males and females (p>0.1).

Comb and wattle condition

Comb and wattle scores.

Comb and wattle scores were also analysed separately. Hatchery chickens showed significantly higher comb and wattle damage than control chickens (p<0.05).  After a post hoc analysis of pen differences a significant interaction was found between pen 1 and 4 (p<0.05), and a tendency was found between pen 2 and 4 (p<0.1). There were no other significant interactions between pen (p>0.1). Hatchery males also had significantly higher feather damage than control males and a significant interaction was found between pen 1 and 4, and pen 2 and 4 (p<0.5). There were no other significant interactions when comparing males of different pens (p>0.1). There was also a tendency towards hatchery females having higher comb and wattle damage than control females (p<0.1), however upon further analysis there were no significant interactions between pens (p>0.1). When comparing sexes within treatment groups it was found that hatchery males had significantly higher comb and wattle damage than hatchery females (p<0.05), however, there was no significant differences when comparing control males and females (p>0.1).


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Last updated: 05/27/18