| 热应激奶牛血清NO浓度和NOS活力的变化 |
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| 引用本文： | 甘乾福. 热应激奶牛血清NO浓度和NOS活力的变化[J]. 中国农学通报, 2009, 25(22): 29-32 |
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| 作者姓名： | 甘乾福 |
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| 作者单位： | 福建农林大学奶牛研究所,福州,350002 |
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| 基金项目： | 国家科技支撑计划(奶业专项)"现代奶业生产技术集成及产业化示范"，福建省科技重大专项"畜禽现代饲养摸式关键技术研究与示范" |
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| 摘 要： | 为探索不同品种奶牛血清中一氧化氮合成酶（NOS）的活力以及一氧化氮（NO）浓度变化与热应激的关系。此实验在热应激期（THI 82.61±0.60）和非热应激期（THI 47.42±0.51）对荷斯坦牛（n=20）和娟-荷F1牛（n=20）血清NOS活力及NO浓度水平进行测定。结果表明：荷斯坦牛和娟-荷F1牛在热应激期血清NOS的活力均显著低于非热应激期（P〈0.01）;热应激期娟-荷F1牛血清NOS的活力显著低于荷斯坦牛（P〈0.01）,非热应激期二者差异不显著（P〉0.05）;热应激期荷斯坦牛血清NO浓度较非热应激期显著降低（P〈0.05）,娟-荷F1牛有降低趋势,但差异不显著（P〉0.05）;非热应激期荷斯坦牛血清中NO浓度显著高于娟-荷F1牛（P〈0.05）,热应激期二者差异不显著（P〉0.05）。
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| 关 键 词： | 热应激 奶牛 一氧化氮合成酶 一氧化氮 |
| 收稿时间： | 2009-08-18 |
| 修稿时间： | 2009-08-26 |
Effect of heat stress on NO and NOS levels in the serum of dairy cows |
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| Lin Zheng,Liang Xuewu,Liu Qinghua,Gan Qianfu,Bao Ruohong. Effect of heat stress on NO and NOS levels in the serum of dairy cows[J]. Chinese Agricultural Science Bulletin, 2009, 25(22): 29-32 |
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| Authors: | Lin Zheng Liang Xuewu Liu Qinghua Gan Qianfu Bao Ruohong |
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| Affiliation: | (Institute of Dairy Cattle, Fujian Agricultural and Forestry University, Fuzhou 350002) |
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| Abstract: | In order to explore the relationship between heat stress and nitric oxide synthase (NOS) and nitric oxide (NO) in the serum of Holstein and Jersey×Holstein dairy cows. Serum was collected from Holstein (n=20) and Jersey×Holstein F1 dairy cows (n=20) in heat stress (THI 82.61±0.60) and no heat stress period (THI 47.42±0.51). The levels of NOS and NO were measured. The result show that: the levels of NOS in serum in heat stress period were significant lower than those in no heat stress period both in Holstein and Jersey×Holstein F1 dairy cows (P<0.01). In heat stress period, levels of NOS of Jersey×Holstein F1 dairy cow were significant lower than those of Holstein dairy cow (P<0.01); but were no significant difference between Holstein and Jersey×Holstein F1 dairy cow (P>0.05) in no heat stress period. The levels of NO in serum in heat stress period were significantly lower than those in no heat stress period in Holstein dairy cow (P<0.05); but were no significant difference between heat stress period and no heat stress period (P>0.05) in Jersey×Holstein F1 dairy cow. In no heat stress period, the levels of NO of Holstein dairy cow in serum were higher than that of Jersey×Holstein F1 dairy cow (P<0.05), but in heat stress period there is no significant difference(P>0.05). |
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| Keywords: | heat stress|dairy cows|nitric oxide synthase|nitric oxide |
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