Effects of environmental factors on breast blister incidence, growth performance, and some biochemical indexes in broilers
Effects of environmental factors on breast blister incidence, growth performance, and some biochemical indexes in broilers
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环境因素对肉鸡胸水泡发生率、生长性能及部分生化指标的影响
DOI：
10.3382/japr.2009-00018
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
Yang Zhao
中科院分区：
文献类型：
--
作者：
Zhao Furong;A. Geng;Baoming Li;Zhengxiang Shi;Yang Zhao
摘要 胸水泡（BB）是影响肉鸡胴体等级的重要因素。为了调查地板类型、饲养密度和性别管理对 BB 发生率的影响，本研究采用了 3 个因素和水平的正交设计 [L9(3 4 )]。将324只21日龄的Arbor Acre肉鸡随机分为9组，每组2个重复，饲养在不同地板类型（铁丝网、塑料板条和竹板条）、不同密度（17、14和11只/m 2 ）和不同性别管理（雄性、雌性和混雄）的笼中。研究了这些因素对第21天至第42天鸡的BB发生率、生长性能和一些生化指标的影响。结果表明，与饲养密度和性别管理相比，地板类型对BB发生率的影响最大。铁丝网笼中肉鸡BB发病率显着高于塑料或竹板笼（P<0.05）。塑料板条上的鸟类比铁丝网或竹板条上的鸟类具有更高的总抗氧化能力值（P < 0.05）。铁丝网组禽类丙二醛含量高于塑料板和竹板组禽类（P < 0.05）。在这项研究中，与密度和性别管理相比，地板类型是影响肉鸡BB发病率的主要环境因素。结果表明血清乳酸和丙二醛水平升高与 BB 的发生有关。
SUMMARY Breast blisters (BB) are an important factor affecting the carcass grade of broilers. To investigate the effects of floor type, stocking density, and sex management on the incidence of BB, an orthogonal design with 3 factors and levels [L9(3 4 )] was used in this study. A total of 324 Arbor Acre broilers, 21 d of age, were randomly allocated into 9 groups with 2 replicates each, and were raised in cages with different floor types (wire netting, plastic slats, and bamboo slats), at different densities (17, 14, and 11 broilers/m 2 ), and with different sex management (males, females, and mixed sexes). Effects of these factors on the incidence of BB, growth performance, and some biochemical indexes were studied for birds from d 21 to 42. The results showed that floor type had the greatest effect on the incidence of BB compared with stocking density and sex management. The incidence of broiler BB was significantly higher in cages with wire netting than in those with plastic or bamboo slats (P 0.05). Birds on plastic slats had higher total antioxidant capability values than those on wire netting or bamboo slats (P < 0.05). Malondialdehyde content of birds in the wire netting group was higher than those of birds on plastic and bamboo slats (P < 0.05). In this study, floor type was the main environmental factor affecting the incidence of BB in broilers, compared with density and sex management. Results suggest that the increased serum levels of lactic acid and malondialdehyde are involved in the development of BB.