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首页> 外文期刊>International Journal of Poultry Sciences >Acute Heat Stress Responses of Three Lines of Chickens with Different Heat Shock Protein (HSP)-70 Genotypes
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Acute Heat Stress Responses of Three Lines of Chickens with Different Heat Shock Protein (HSP)-70 Genotypes

机译：不同热休克蛋白（HSP）-70基因型三系鸡的急性热应激反应

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An experiment was conducted to study the response of three chicken lines with different HSP 70 genotypes to acute heat stress . Twenty eight kampong chicken (native chicken, with seven genotypes i.e., AA, AB, AC, CC, AD, DD and BC) and twenty four Arabic chicken (with six genotypes i.e., AA, AB, AC, CC, AD and BC) and four commercial chickens (with one genotype i.e., DD) were used and randomly allocated in a factorial arrangement into groups which their HSP 70 genotypes had been identified. Acute heat stress was exposed at 40°C for 0.5, 1.0 and 1.5 h, respectively, using chamber in 33 x 33 x 75 cm3. Parameters measured were the onset of panting (minute), panting frequency (times/minute), feed consumption (g/minute), water consumption (mL/minute), manure water content (%), rectal temperature (°C), serum corticosterone concentration (g/dL) and HSP 70 expression (copy mRNA). The result of this study showed that there was an interaction between chicken lines and acute heat stress exposure on water consumption and manure water content. Chicken lines affected panting frequencies and manure water content but it did not affect the onset of panting, feed and water consumptions, rectal temperature, serum corticosterone concentration and expression of HSP 70. Acute heat stress increased panting frequency, drinking water consumption, manure water content, rectal temperature, serum corticosterone concentration, HSP 70 expression and it decreased feed consumption. The highest response on panting frequency, rectal temperature, serum corticosterone concentration and expression of HSP 70 was found in the DD genotype and the lowest in AD genotype. The most rapid onset of panting occurred in DD genotype and the slowest in AD genotype. The study revealed interaction between chicken lines and HSP 70 genotypes in heat resistance. Kampong chicken had the highest heat resistance as compared to Arabic and commercial chickens but HSP 70 genotypes that was the most tolerant to high ambient temperature was AD genotype where as the lowest tolerant was DD genotype.
机译：通过实验研究了3种不同HSP 70基因型的鸡品系对急性热胁迫的反应。二十八只甘榜鸡（本地鸡，具有7个基因型，即AA，AB，AC，CC，AD，DD和BC）和二十四阿拉伯鸡（具有六个基因型，即AA，AB，AC，CC，AD和BC）使用四只商品鸡（具有一种基因型，即DD），并以因子分解方式随机分配到已鉴定出其HSP 70基因型的组中。使用33 x 33 x 75 cm3的小室，在40°C下分别暴露急性热应力0.5、1.0和1.5 h。测量的参数是气喘发作（分钟），气喘频率（次数/分钟），饲料消耗（克/分钟），耗水量（mL /分钟），粪便含水量（％），直肠温度（°C），血清皮质酮浓度（g / dL）和HSP 70表达（复制mRNA）。这项研究的结果表明，鸡系与急性热应激暴露在水消耗和粪肥含水量上存在相互作用。鸡品系影响气喘频率和粪便含水量，但不影响气喘发作，饲料和水的消耗，直肠温度，血清皮质酮浓度和HSP 70的表达。急性热应激增加气喘频率，饮水量，粪便含水量，直肠温度，血清皮质酮浓度，HSP 70的表达并降低了饲料消耗。在DD基因型中，对气喘频率，直肠温度，血清皮质酮浓度和HSP 70表达的响应最高，而在AD基因型中最低。气喘发作最快的是DD基因型，而AD基因型最慢。该研究揭示了鸡品系与HSP 70基因型在耐热性之间的相互作用。与阿拉伯和商业鸡相比，甘榜鸡的耐热性最高，但对高温环境耐受性最高的HSP 70基因型为AD基因型，其中对DD基因型的耐受性最低。

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