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1 温度影响 猪对气候的变化相当敏感,既怕冷又怕热.据观察,猪对气温变化的反应如表1. 从表1可以看出,温度降到4℃时,一些病弱猪就有聚堆反应;当温度下降到-8℃以下时,一般就失去了正常的活动,仔猪和病弱猪就可能冻死,即使生活下来,也可能成为僵猪,影响以后的增长、肥育.温度不但影响猪的正常生长和活动,而且对育肥猪的日增重也有较大影响,如表2. 相似文献
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每个猪群都可能是一个病原性细菌和病毒的复合体,当猪处于应激状态时,就可能发生疾病。不同猪群病原的种类和数量有所不同,每个猪群的机体免疫水平或保护性抗体的滴度也各不相同,这取决于该猪群对病原体的接触程度和免疫程序。 建立一个良好的引种程序并严格执行,对于种猪场是极其重要的。而完善的、贯彻始终的管 相似文献
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本文就猪肺炎支原体疾病、猪链球菌病、猪传染性萎缩性鼻炎以及腹泻疾病几种农村养猪常见猪病的治疗以及预防措施进行了具体的介绍,希望能够为我国广大农村养殖户提供参考以及借鉴,减少猪病可能造成的经济损失,提升农村养猪的经济效益. 相似文献
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本文就猪蓝耳病的流行特点、临床症状以及防控技术进行了具体的介绍,希望能够为我国生猪养殖产业提供参考以及借鉴,尽可能降低猪蓝耳病可能造成的损失。 相似文献
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为了提高猪群总体质量和保持较高的生产水平,达到优质、高产、高效的目的,猪场经常要向质量较好的种猪场引进种猪。然而每个猪群都可能是一个致病性微生物的复合体,一旦猪群处于应激状态时,就可能发生疾病。不同猪群病原的种类和数量也有所不同,每个猪群的机体免疫水平或保护性抗体的滴度也各不相同,这主要取决于该猪群对病原体的接触程度和免疫程序。每当我们引进新的种群时,就有可能引进一个新的病原复合体,所以,建立一个良好的引种程序并严格执行,对于猪场的安全和引进的优良种猪安全、顺利的投入生产是极其重要的。 相似文献
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智慧养猪已成为生猪产业发展的新趋势,其核心主要聚焦于智能环控、智能饲喂和对猪群的视频监控等技术的应用。大数据采集是实现智能化的前提,因此,通过射频识别（RFID）技术建立猪只大数据是实现智慧养猪的基础。通过正确的猪只个体识别技术的选型,在不同生命周期给猪只选配合适的电子耳标,给猪只建立精准的身份证明。在不同阶段的数据采集场景中,通过识别电子耳标产生真实数据的关联,准确掌握每一头猪从出生到屠宰再到消费市场终端之间的信息,从而确保了动物健康养殖、疫病控制和食品安全,真正意义上实现智慧养猪。 相似文献
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YOUNG GA 《Journal of the American Veterinary Medical Association》1948,112(851):121-123
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自2005年安康市大力发展以生猪为主的畜牧产业以来,生猪市场价格经历了从低谷（2006年的1．6元／kg）到高峰（2007年底至2008年初的3．75元／kg）再到低谷（当前的2．1元／kg）“过山车”式的宽幅波动,振幅高达134％,对畜牧产业的快速发展带来了冲击,多数规模养殖场（户）在各级党委政府及农业部门的高度重视和科学指导、帮扶下,沉着应对了价格的宽幅震荡,经受住了市场的考验,获取了巨额利润, 相似文献
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Kittawornrat A Zimmerman JJ 《Animal health research reviews / Conference of Research Workers in Animal Diseases》2011,12(1):25-32
Pork production began to flourish in the USA after the practice of finishing pigs on corn was popularized in the late 1600s. By the 1840s, there were 35 million pigs and 20 million people in the USA and Cincinnati was the world's largest pork market. Between 1890 and the present, the total number of pigs in the USA has remained at 50-60 million, but dramatic changes in swine husbandry over the course of the 20th century have metamorphosed pig production from small, extensive (outdoor), labor-dependent enterprises into large, intensive (indoor), capital-dependent, production systems. This development has led to debate concerning the impact of swine production on animal/human health, the environment, and the welfare of the animals under our care. In a very tangible way, the future of pork production depends on effectively addressing the public's concerns regarding animal welfare and health. Here, we review basic sensory and behavioral aspects of swine with the objective of reaching a better understanding of pig behavior and pig welfare. The premise of this discussion is that safeguarding animal welfare and health is good for pigs, pork producers and the animal-conscious public. 相似文献
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In an attempt to further elucidate the causes of perinatal mortality in pigs, a histomorphological study of organs from normal 0.4 to 60 h old euthanized piglets and from perinatal dead/euthanized pigs belonging to different mortality groups was performed. The heart, lung, liver, kidney, spleen, thymus, pancreas, thyroid and adrenal glands were studied; all sections were examined without previous knowledge of the cause of death. Different observations in the organs were judged according to a scale of 1 to 4 where 1 = none or significant and 4 = a high degree of specific organ characteristics. The percentage of the group examined that scored 3–4 was calculated for each organ characteristic, and with the help of covariance analysis adjusted for the linear effect of total body weight (at the time of death), age, gestation length, and litter size (all pigs born, alive or dead). This first report describes the observations for the euthanized normal animals. 相似文献