ABSTRACT

1. The objective of this study was to evaluate the effects of fully (FSF) or partially (PSF) flooring designs on animal-based welfare indicators in a fast-growing broiler genotype. Growth performance and carcass characteristics were assessed.

2. One-d-old male chicks were randomly assigned to three groups: fully slatted flooring (100% slatted floor), partially slatted flooring (50% litter floor and 50% slatted floor) and conventional floor pens with litter (control, 100% deep litter) with 5 replicates of 14 male chicks. The litter was rice hull, as is usual in practice.

3. Measurements of live body weight, feed intake, feed conversion ratio, mortality and performance index were collected before depopulation at 42 d old. Welfare assessments were done by individual ante- and post-mortem carcass inspection during depopulation and after slaughter.

4. Broiler live body weight (P < 0.03) and feed intake (P < 0.003) and ante-mortem welfare indicators (P < 0.001) were positively affected by FSF and PSF compared to the conventional deep litter system. Post-mortem lesion scores on wings and shoulder were similar in all floor types but there were significant differences for the lesions on breast (P < 0.003) and pygostyle (P < 0.05).

5. In conclusion, FSF and PSF resulted in higher body weights, while reducing incidence of foot pad and hock joint deformations in live animals.

摘要

1. 本研究的目的是评估完全 (FSF) 或部分 (PSF) 地板设计对快速生长的肉鸡基因型动物福利指标的影响。评估了生长性能和胴体特征。

2. 一岁大的雄性小鸡被随机分配到三组：全板条地板（100% 板条地板）、部分板条地板（50% 垫料地板和 50% 板条地板）和带垫料的常规地板围栏（对照，100 % 深垫料），14 只雄性小鸡重复 5 次。垃圾是稻壳，这在实践中很常见。

3.在42日龄去种群前收集活体重、采食量、饲料转化率、死亡率和性能指数的测量值。福利评估由个人做产前和验尸尸体检验灭绝期间和屠宰后。

4.与常规深垫料系统相比，FSF 和 PSF 对肉鸡活体重（P < 0.03）和采食量（P < 0.003）和宰前福利指标（P < 0.001）有正向影响。翼和肩的死后病变评分在所有地板类型中相似，但在乳房（P <0.003）和pygostyle（P <0.05）的病变有显着差异。

5. 总之，FSF 和 PSF 导致更高的体重，同时减少活体动物脚垫和飞节关节变形的发生率。