Effects of music stimulus on behavior response,cortisol level,and horizontal immunity of growing pigs     

Jiafang Li  Xiang Li  Honggui Liu  Jianhong Li  Qian Han  Chao Wang  Xiangyin Zeng  Yutao Li  Wenbo Ji  Runxiang Zhang  Jun Bao 《Journal of animal science》2021,99(5)

An enriched environment is widely used to improve domestic animals’ welfare and promote their natural behaviors. Music can reduce abnormal behavior in humans, nonhuman primates, and rodents. However, little is known about the effects of music on pigs. This study aims to explore the effects of repeated music stimulation on the behavior, physiology, and immunity of growing pigs. A total of 72 hybrid piglets (Large White × Duroc × Minpig) were randomly divided into three groups, including music (Mozart K.448, 60 to 70 dB), noise (recorded mechanical noise, 80 to 85 dB), and control (natural background sound, <40 dB), and 6 h sound stimulation was given per day (1000 to 1600 hours) from 40 to 100 d of age. The behavioral activities of the pigs were observed during the music stimulation, and their serum cortisol, salivary cortisol, and serum immune indices were also measured. Compared with the control group, the music group and noise group increased activity but decreased lying of pigs (P < 0.05). A significant increase in tail-wagging, playing, and exploring behaviors of pigs was found in the music group (P < 0.05), and the noise significantly increased the aggressive behavior of the pigs (P < 0.05). Tail-wagging, playing, exploring, manipulating, and aggressive behaviors decreased over time. Short-term (8 d) music stimulus had a lower cortisol level than that of the noise and control groups (P < 0.05), whereas long-term (60 d) music stimulus increased immunoglobulin G (IgG), interleukin-2 (IL-2), and interferon-gamma (IFN-γ) levels (P < 0.05) and decreased interleukin-4 (IL-4) level (P < 0.05). Long-term noise stimulus significantly reduced the level of IgG (P < 0.05) but did not affect the level of IL-2, IL-4, and IFN-γ levels (P > 0.05). In conclusion, short-term music stimulus (8 d) reduced the stress response, whereas long-term music stimulus (60 d) enhanced the immune responses. In addition, the noise increased the aggressive behavior, and long-term noise reduced the immunity of the growing pigs.  相似文献   

我国牧草种植成本收益变化与比较     

石自忠  王明利  胡向东  崔姹 《草业科学》2017,34(4)

本研究以牧草种植户牧草及粮食作物的调研数据为基础,计算出2010-2014年主要牧草和粮食作物的成本收益基本信息,对其变化进行统计分析,并对各作物的成本收益进行比较。分析发现,2014年苜蓿(Medicago sativa)的经济效益有所下降;黑麦草(Lolium perenne)和青贮玉米(Zea mays)的纯收益和收益率有所增长;苜蓿的纯收益和收益率要高于黑麦草和青贮玉米;马铃薯(Solanum tuberosum)和苜蓿的经济效益更具优势,种植小麦(Triticum aestivum)经济效益较差;黑麦草和青贮玉米人工和土地成本更高,苜蓿水电费最高。建议调整农业产业结构,推行"粮+经+饲+草"四元种植结构,全面扶持牧草产业发展,建立健全牧草生产资料补贴制度。  相似文献   

Phenological and physiological evaluation of first and second cropping periods of sorghum and maize crops     

Maria Antonia Machado Barbosa  Kacilda Naomi Kuki  Pedro Santos Peno Bengala  Emilly dos Santos Pereira  Angélica Fátima de Barros  Sebastián Giraldo Montoya  Leonardo Duarte Pimentel 《Journal of Agronomy and Crop Science》2020,206(2):263-276

Environmental conditions influence phenology and physiological processes of plants. It is common for maize and sorghum to be sown at two different periods: the first cropping (spring/summer) and the second cropping (autumn/winter). The phenological cycle of these crops varies greatly according to the planting season, and it is necessary to characterize the growth and development to facilitate the selection of the species best adapted to the environment. The aim of this study was to characterize phenological phases and physiological parameters in sorghum and maize plants as a function of environmental conditions from the first cropping and second cropping periods. Two parallel experiments were conducted with both crops. The phenological characterization was based on growth analyses (plant height, leaf area and photoassimilate partitioning) and gas exchange evaluations (net assimilation rate, stomatal conductance, transpiration and water-use efficiency). It was found that the vegetative stage (VS) for sorghum and maize plants was 7 and 21 days, respectively, longer when cultivated during the second cropping. In the first cropping, the plants were taller than in the second cropping, regardless of the crop. The stomatal conductance of sorghum plants fluctuated in the second cropping during the development period, while maize plants showed decreasing linear behaviour. Water-use efficiency in sorghum plants was higher during the second cropping compared with the first cropping. In maize plants, in the second cropping, the water-use efficiency showed a slight variation in relation to the first cropping. It was concluded that the environmental conditions as degree-days, temperature, photoperiod and pluvial precipitation influence the phenology and physiology of both crops during the first and the second cropping periods, specifically cycle duration, plant height, leaf area, net assimilation rate, stomatal conductance and water-use efficiency, indicating that both crops respond differentially to environmental changes during the growing season.  相似文献   

Seasonal Changes in the Milt Quality of Waigieu Seaperch,Psammoperca waigiensis: Implications for Artificial Propagation          下载免费PDF全文

Minh Hoang Le  Hung Quoc Pham 《Journal of the World Aquaculture Society》2018,49(5):857-866

Milt quality of Waigieu seaperch was sampled at the beginning, the middle, and the end of the spawning season to assess if the sampling season has an effect on milt quality parameters. The milt volume and total sperm production were higher at the middle of the spawning season while the sperm concentration in milt was significantly higher at the beginning and the end of the spawning season. Sperm morphology and the major parameters of seminal plasma (pH, total protein, Mg²⁺, or Ca²⁺ concentrations) did not differ throughout the spawning season. The concentrations of Na⁺ and the osmolality increased throughout the spawning season. The percentage of motile cells did not differ during the spawning season while the duration of sperm motility (swimming duration) and velocity (swimming speed) were significantly different during the spawning season. The fertilization rate (75.7 ± 6.8%) and hatching rate (56.5 ± 3.1%) at the middle of the spawning season were higher than at the beginning and end periods. Results indicated that milt quality parameters and fertility success in the middle of the spawning season were higher compared to earlier and later sampling dates. Thus, we recommend collecting milt during this time for maximal fertilization and hatching success.  相似文献   

饥饿、季节及性别对大鲵肌肉、肝脏生化成分的影响     

杨代勤 《湖北农学院学报》1990,(3)

季节会影响到大鲵肌肉的脂肪及钙的含量,肝脏的脂肪、钙及游离氨基酸的含量,饥饿对肌肉的酸化成分不产生影响,但饥饿程度的增加,会对肝脏脂肪无氮浸出物及游离氨基酸产生影响;繁殖前雌性大鲵的肌肉肝脏的肪肪含量均高于雄性的。  相似文献   

仔猪初生重与产仔季节的相关性研究   总被引：2，自引：0，他引：2  

陈才勇  王恬  霍永久 《家畜生态》2003,24(1):19-23

实验以杜洛克×米猪杂交母猪为研究对象,采用大约克公猪配种,经2年研究分析了282窝3001头新生仔猪样本。结果表明:仔猪初生重呈现明显的季节性变化。春、夏、秋、冬出生仔猪的平均初生体重分别为1.101kg、1.049kg、1.152kg、1.163kg,其中春季和夏季分别显著低于秋季和冬季(P<0.05)。仔猪初生重的均匀度以春、冬季最佳。但供试母猪的妊娠期、产活仔数和初生窝重没有类似变化,提示仔猪初生重的这种季节性变化不是由这些因素所致,而很可能与不同季节的环境温度、光照周期以及动物的内分泌特点有关。子宫内生长阻滞(IUGR)的新生仔猪的比例在夏季为10.12%,显著高于秋季的4.83%(P<0.05),证明母猪妊娠后期的热应激会严重阻碍胚胎发育。  相似文献   

冷季型草坪草建植管理技术研究     

邓蓉  向清华  梁应林 《草业科学》2001,18(6):70-74

采用正交设计进行施肥里、刈割高度、播量，草坪草品种4因素4水平试验，通过测定草坪草越冬率，越夏率，成坪时间，叶绿素，杂草盖度，生长度，初步筛选出不同目的冷季型草坪草的建植管理方案。  相似文献   

环境温度和饲粮营养浓度对生长期母兔代谢能利用率的影响     

金岭梅  D.J.Farrell  E.Thomson 《动物营养学报》1989,(1)

选用6只9周龄新西兰母兔,评定环境温度和饲粮营养浓度对生长期母兔代谢能利用率的影响。试验在密闭式的小动物呼吸测热柜中进行。分别对处于环境温度为20±2℃和30±2℃,采食两种不同营养浓度的试兔进行测试。饲粮营养水平实测值,分别为12.22kJ ME/g和13.49kJ ME/g;粗蛋白质(CP)分别为17.3％和21.6％;中性洗涤纤维(NDF)分别为23.7％和16.5％。结果表明:环境温度影响试兔的能量平衡,它与采食量间存在着显著的相关。20±2℃时,相关系数r=0.798;30±2℃时,相关系数r=0.875。在本试验设计范围内,饲粮营养浓度并不影响代谢能食入量(ME_I),热增耗(HP)和能量平衡(EB)。当环境温度为20±2℃和30±2℃时,表观代谢能转化率(NE/ME)分别为51％和71％;每天每兔每千克代谢体重代谢能维持需要分别为396 kJ和361 kJ。试验结果认为:环境温度影响营养物质消化率(P相似文献   

冬春季莱芜黑山羊松果体功能状态的免疫组织化学比较     

王凌燕谭雷涛  王树迎 《中国兽医科技》2006,36(2):135-138

应用5-HT免疫组织化学染色法，对冬春两季的莱芜黑山羊松果体进行了观察比较，以探讨松果体与下丘脑垂体-性腺轴的关系。结果显示，莱芜黑山羊松果体内存在大量5-HT阳性的松果体细胞及5-HT纤维；冬季松果体阳性细胞面积及阳性面积比都明显大于春季（P〈0．01），平均光密度在冬、春季间无明显差异（P〉0．05）。表明莱芜黑山羊松果体的功能活动呈现季节性变化，与羊的繁殖活动关系密切。  相似文献   

模糊评分法在高羊茅品种综合评价中的应用   总被引：3，自引：1，他引：2  

牟琼  吴佳海  尚以顺 《草业科学》2003,20(9):76-77

1999--2001年对引进和培育的高羊茅新品种(系)在喀斯特生态区进行品种比较试验。观测记裁各参试品种的性状表现，对春、夏、秋、冬4个季节的观测结果，用模糊评分法Ⅲ进行分析比较，并按综合评价值的大小排序a结果高羊茅“98--1”的综合评价值最大，排第一名，依次是猎狗5号、矮星2号、凌志(对照)，其余参试品种排名次后。认为用模糊评分法对高羊茅品种进行分析评价是可行的。  相似文献