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   

白云国家森林公园适老性评价及优化分析     

丁学旦  倪嘉晨  吴霆俊  胡牮 《绿色科技》2020,(5):47-51

指出了人口老龄化是社会发展的必然趋势,也是当前中国面临的重要社会问题之一,国家和地方各级政府出台了一系列政策,切实保障老年人的权益。森林公园除保护其范围内自然环境和自然资源外,为人们的游憩、疗养、避暑和文化娱乐等提供了良好的环境,逐渐成为老年人休闲娱乐生活的选择。选取浙江丽水白云国家森林公园为研究对象,通过实地踏查、问卷调查和随机访谈等方法,深入调查了老年人个人基本资料及背景、活动状况和使用情况,对3类典型空间和4类景观元素进行了详细地分析,针对不足之处提出了相应的优化建议,以期为相关公园绿地的适老性规划设计提供建设思路。  相似文献   

Three SNPs within exons of INHA and ACVR2B genes are significantly associated with litter size in Dazu black goats     

Shi-Zhi Wang  Guang-Xin E  Yan Zeng  Yan-Guo Han  Yong-Fu Huang  Ri-Su Na 《Reproduction in domestic animals》2021,56(6):936-941

The aim of this study was to analyse the association between single-nucleotide polymorphisms within INHA and ACVR2B and litter size in Dazu black goats. In total, twenty-two SNPs were genotyped in 190 individuals by SNaPshot and resequencing. The results showed that three SNPs (SNP_1, SNP_12 and SNP_13 in this study) were detected to have significant additive genetic effect on the recorded goat litter size (p < .05). The SNP_1 (NC_030809.1), a non-synonymous substitution of G for T at chr2-g. 28314990 in the exon 2 of INHA gene (NM_001285606.1), resulted in homozygote 2 (HOM2) contributed 0.25 and heterozygote (HET) contributed 0.12 larger litter than homozygote 1 (HOM1). Meanwhile, SNP_12 (Chr22-g. 11721225 A > T) and SNP_13 (Chr22-g. 11721227 A > C) (NC_030829.1) simultaneously mutated at the first and third position of a triplet AAA (lysine, K) in the exon 4 of ACVR2B gene (XM_018066623.1) had estimated genetic effects of HOM1 (0.00) and HOM2 (0.03) larger than HET (−0.12). In conclusion, one SNPs (chr2-g. 28314990 T > G) within the exon 2 of INHA and two SNPs (Chr22-g. 11721225 A > T and Chr22-g. 11721227 A > C) i n the exon 4 of ACVR2B gene were highly recommended as candidate markers of litter size in Dazu black goats. A large-scale association study to assess the impact of these variants on litter size is still necessary.  相似文献   

断裂构造地带公路定线研究     

冯桂炎  倪江华 《湖南农业大学学报(自然科学版)》1989,16(1)

本文阐述在断裂构造地质地带的公路定线问题。包括:用航空象片判释和地质调绘方法查明断裂构造分布情况,用航测成图和纸上定线方法确定路基和桥隧构造物的稳定位置。结果表明:用航片判释区域地质构造有较好效果,通过地质调绘为评价路线方案和确定线位提供可靠依据,通过航测成图和纸上定线作出了比较经济合理的方案。  相似文献   

银川地区羊肝中阿苯达唑(丙硫苯咪唑)残留情况的调查   总被引：1，自引：0，他引：1  

倪泽成刘辛赟  武占银马立均夏国振  蒋安文张惠英李春和  沙涌波 《中国动物检疫》2004,21(9):29-30

阿苯达唑又称丙硫苯咪唑或丙硫咪唑，有时又称抗蠕敏，是目前国内常用的驱虫效果好、范围广、毒性较低的兽用驱虫药。随着家庭舍饲养羊规模的不断扩大，饲养者为了减少因寄生虫导致的死亡并增加育肥效果，常把阿苯达唑作为育肥前预防驱虫或寄生虫病治疗的首选药，出现了滥用或超剂量使用的现  相似文献   

强力增产素对小麦花后干物质生产和产量的调节效应     

封超年  严六零  郭文善  朱新开  袁秋勇  霍中洋  倪向群 《扬州大学学报(农业与生命科学版)》1994,(1)

试验于１９９０～１９９２年在江苏农学院实验农场进行，供试品种（系）为扬麦５号、冀８４５４１８和８８７４．通过在小麦开花期喷施强力增产素，研究其对小麦花后干物质生产和产量的影响。结果表明：喷施强力增产素能延缓花后叶片的衰老，提高叶片叶绿素含量，增强光合功能，扩大花后干物质积累量，具有一定的增粒、增重作用。开花期喷施，可增产６．８２％～８．５６％，花后２０ｄ喷施效应下降，仅增产３．７３％。  相似文献   

鸭瘟病毒的PCR检测及其产物分析   总被引：6，自引：0，他引：6  

陈建君  张毓金  杨增岐  宋长绪 《动物医学进展》2003,24(5):71-73

根据基因库中已有的鸭瘟 Ul6的序列 ,合成一对引物 ,对 3株鸭瘟病毒进行 PCR扩增 ,均扩增出大小约 42 0 bp的特异性片段。进行测序 ,结果表明 3个毒株扩增后的片段均为 42 1bp。经重复实验后确定最佳反应条件 ,按该条件对两例临床病料进行检测 ,结果均出现大小约为 42 0 bp的特异片段。PCR产物与 L ake Andes株的相关序列比较 ,广东毒株与 L ake Andes株同源性较高  相似文献   

家蚕豆腐渣人工饲料及五龄期饲育研究     

吴小锋  徐俊良  缪云根  曾水云 《浙江大学学报(农业与生命科学版)》1996,(4)

以３个栽培品种的冬芽为试验材料，分析了茎尖培养生长差异的生理原因．结果表明：添加果糖的效果优于蔗糖，而提高蔗糖浓度可以促进茎叶生长；不同品种茎尖的蔗糖酶活性存在较大差异，生长良好的品种（剑持）其蔗糖酶活性及酶蛋白含量高于生长较差的湖桑３２号和一之濑；茎尖内源激素含量及其比例差异明显．其中ＧＡ、ＡＢＡ含量及其比值剑持较高，其次为一之濑，湖桑３２号最低  相似文献   

赤霉酸及矮壮素对苦瓜性别表现的影响     

汪俏梅  曾广文 《浙江大学学报(农业与生命科学版)》1996,(5)

以兰山大白、株洲长白和英引３个苦瓜品种为材料进行外源激素处理对苦瓜植株性别表现影响的试验．结果表明，苗期进行ＧＡ３２５～１００ｍｇ／Ｌ处理有明显的促雌效果；ＣＣＣ５０～２００ｍｇ／Ｌ处理则有促雄效果，但促雄程度因品种而异，ＣＣＣ５００ｍｇ／Ｌ处理对兰山大白有适度的促雌作用．外源激素处理对苦瓜植株性别分化的影响可持续８０ｄ以上．苦瓜第一雌花形成与茎尖ＧＡ３含量达到峰值有关，２５ｍｇ／Ｌ的ＧＡ３处理使茎尖ＧＡ３含量的峰值提前出现而使第一雌花形成提早，而１００ｍｇ／ＬＣＣＣ处理使茎尖ＧＡ３含量先下降再逐渐回升而使植株第一雌花形成滞后  相似文献   

开发区区域大气和水环境容量的计算及管理     

曾光明  卓利 《湖南农业大学学报(自然科学版)》1996,23(3)

介绍了开发区大气、水环境容量计算及管理方法，并以湖南城陵矶经济技术开发区为例，初步了方法的具体应用和有关细节处理，所介绍的方法将对其他类似开发区大气、水环境容量的计算及管理起到一定的借鉴和指导作用。  相似文献