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[前沿资讯] 官方:对能繁母猪应保尽保;明年将继续对规模场和种猪场给予补助 进入全文

中国畜牧网

近日,面对目前生猪市场的保供稳产情况,银保监会及发改委回应了相关情况。银保监会副主席黄洪表示,努力做到了对能繁母猪应保尽保,对生猪生产尽量扩大保险覆盖面。同日,发改委也表示明年将继续对规模场和种猪场给予补助。在21日举行的银行业保险业运行及服务实体经济情况发布会上,谈及银行业保险业对生猪生产的支持保障措施,银保监会副主席黄洪介绍说,银保监会鼓励并支持保险机构利用保险功能参与生猪风险保障工作,一方面是对能繁母猪的保险,另一方面是对育肥猪的保险,现在努力做到了对能繁母猪应保尽保,对生猪生产尽量扩大保险覆盖面。

[学术文献] 不同氮源对猪粪废水厌氧发酵氨抑制的影响 进入全文

环境工程学报

为明确不同氮源在猪粪废水厌氧发酵过程中氨氮释放规律以及对厌氧发酵的抑制作用,以尿素和氯化铵为外加氮源,以固液分离后的猪粪废水为底物,在中温35 ℃通过批式厌氧发酵,研究不同总氨氮(total ammonia nitrogen, TAN)浓度的外加氮源对猪粪废水厌氧发酵的影响。 结果表明:在猪粪废水厌氧发酵过程中,以尿素为氮源产生的游离氨(free ammonia nitrogen, FAN)、挥发性脂肪酸(volatile fatty acids, VFAs)和pH均明显高于氯化铵,但总氨氮(total ammonia nitrogen, TAN)没有明显区别;以尿素为氮源(TAN≤500 mg·L-1)和以氯化铵为氮源(TAN≤1 500 mg·L-1)均能促进猪粪废水厌氧发酵产甲烷,但超过这一浓度后,均对产甲烷有抑制作用,尿素对猪粪废水厌氧发酵产生抑制的浓度(TAN>500 mg·L-1)远低于氯化铵(TAN>1 500 mg·L-1);相较氯化铵,以尿素为氮源对猪粪废水的厌氧发酵具有更强的氨抑制。本研究为高氨氮抑制厌氧发酵氮源的选择提供了理论依据。

[学术文献] Gastric infusion of short-chain fatty acids can improve intestinal barrier function in weaned piglets 进入全文

Genes & Nutrition

Background: The present study was conducted to investigate the effects of gastric infusion of short-chain fatty acids (SCFA) on gut barrier function in a pig model. In this study, 21 DLY barrows with an average initial body weight of (8.31 ± 0.72) kg were randomly allotted into three treatments: (1) control, (2) infusing low SCFA, S1, (3) infusing high SCFA, S2. The experimental period lasted for 7 days. Results: Gastric infusion of SCFA increased the concentrations of SCFA in serum and digesta, and enhanced the mRNA and protein abundances of SCFA receptors in pig intestine (P < 0.05). Moreover, gastric infusion of SCFA led to alteration of intestinal morphology, elevation of intestinal development-related gene abundances, and decrease of apoptotic cell percentage, as well as reduction of pro-apoptosis gene and protein abundances (P < 0.05). Besides, the jejunal SLC7A1 and ileal DMT1 mRNA abundances in the SCFA infusion groups were higher than those in the control group (P < 0.05). Additionally, gastric infusion of SCFA increased the mRNA abundances of Occludin and Claudin-1 in the duodenum and ileum, enhanced Lactobacillus spp counts in the ileal digesta, decreased the mRNA and protein abundances of IL-1β in the colon, and reduced Escherichia coli count in the ileal digesta (P < 0.05). Conclusions: These data indicated that gastric infusion of SCFA, especially high SCFA concentration, may be beneficial to gut development of piglets via improving gut morphology, decreasing apoptotic cell percentage, and maintaining intestinal barrier function.

[学术文献] Effect of omega-3 polyunsaturated fatty acid (n-3 PUFA) supplementation to lactating sows on growth and indicators of stress in the post-weaned pig 进入全文

NCBI

Dietary n-3 PUFA are precursors for lipid metabolites that reduce inflammation. Two experiments were conducted to test the hypothesis that enriching the sow diet in n-3 PUFA during late gestation and throughout lactation reduces stress and inflammation and promotes growth in weaned pigs. A protected fish oil product (PFO; GromegaTM) was used to enrich the diet in n-3 PUFA. In the initial experiment, time-bred gilts were fed a gestation and lactation diet supplemented with 0 (control; n = 5), 0.25 (n = 4), 0.5 (n = 4) or 1% (n = 5) PFO from 101 ± 2 d of gestation to d 16 of lactation. Adding 1% PFO to the diet increased the n-3:n-6 PUFA ratio in colostrum and milk compared to controls (P = 0.05). A subsequent experiment was performed to determine if supplementing the sow diet with 1% PFO improved growth and reduced circulating markers of acute inflammation and stress in the offspring. Plasma was harvested from piglets (16 /treatment group) on d 0 (d of weaning) and d 1 and 3 postweaning. Pigs from the 1% PFO treatment group weighed more (P = 0.03) on d 3 postweaning and had a greater (P ˂ 0.05) n-3:n-6 PUFA ratio in plasma on each day sampled compared to 0% PFO controls. There was an overall treatment effect on plasma total cortisol (P = 0.03) and haptoglobin (P = 0.04), with lesser concentrations in pigs on the 1% PFO diet. Plasma corticosteroid-binding globulin (CBG) concentrations were not different between treatment groups but were less (P ˂ 0.001) on d 1 and 3 when compared to d 0. The resultant free cortisol index [FCI (cortisol/CBG)] was less (P = 0.02) on d 1 and 3 for pigs from the 1% treatment group compared to the controls. An exvivo lipopolysaccharide (LPS) challenge of whole blood collected on d 0 and 1 was used to determine if 1% PFO attenuated release of inflammatory cytokines (IL-1β, IL-6, and TNF-α). Blood from pigs within the 1% PFO treatment group tended (P = 0.098) to have a lesser mean concentration of TNF-α in response to LPS compared to blood from controls. These results suggest that providing a PFO supplement as 1% of the diet to sows beginning in late gestation and during lactation can increase the n-3:n-6 PUFA ratio in their offspring, which may improve growth and reduce the acute physiological stress response in the pigs postweaning.

[前沿资讯] 生猪存栏降幅超过41%,猪价同比上涨7成,广东、福建、湖南、江苏等6省纷纷给各市定养猪任务 进入全文

中国饲料行业信息网

农业农村部近日公布了9月份400个县的生猪、能繁母猪存栏监测信息。数据显示,9月份生猪存栏较上月同期减少3%,较去年同期减少41.1%;能繁母猪存栏较上个月同期较少2.8%,较去年同期减少38.9%。9月CPI创6年来新高,猪肉价格涨7成,贡献一般以上CPI涨幅。从上述数据看出,生猪和能繁母猪存栏数据降幅继续加大,生猪存栏同比降幅超过41%,但是环比上月,两组数据降幅有减缓的趋势,能繁母猪和生猪存栏环比8月份降幅分别为2.8%和3.0%,但是市场上还是缺猪,因为猪价一路飙升,据国家统计局公布:9月份居民消费价格指数(CPI)同比上涨3%,创近6年来新高。其中,猪肉价格同比上涨近7成,成为推动物价涨幅扩大的主要因素,牛肉、羊肉、鸡肉、鸭肉和鸡蛋价格涨幅在9.4%—18.8%之间。“猪肉价格贡献了CPI一半以上的涨幅,剔除猪肉价格影响后,CPI也就上涨1.4%左右。加上猪肉价格上涨的溢出效应,即具有替代属性的肉蛋白类食品价格也出现不同幅度上涨。” 在中国宏观经济研究院市场价格所研究员郭丽岩说。

[前沿资讯] 前三季进口猪肉132.6万吨,同比增43.6% 进入全文

国际畜牧网

10月14日,国新办就2019年前三季度进出口情况举行发布会,针对前三季度中国大豆进口量下滑是否与非洲猪瘟有关,海关总署新闻发言人、统计分析司司长李魁文表示,中国严防疫病疫情传入和不安全食品的进口。禁止任何有疫情国家产品进口,加强口岸查验和有毒有害物质监测,对不合格食品一律不准入境。有记者问:中国的大豆在前三季度进口下滑近8%,这是不是由于非洲猪瘟引起的?如果中国要扭转这个势头,在第四季度要进口更多大豆的话,如何解决从美国进口更多的大豆问题?如何更好地解决非洲猪瘟的问题?李魁文指出,海关总署严防疫病疫情传入和不安全食品的进口。禁止任何有疫情国家产品进口,加强口岸查验和有毒有害物质监测,对不合格食品一律不准入境,并公布相关信息。同时,我们坚决打击走私猪肉等肉产品的违法行为。李魁文称,“推动贸易便利化、推动扩大开放。我们改革进口肉类境外生产企业注册评审制度,制定了严格的境外肉产品企业在华注册标准,要求对华出口肉产品国家严格按照中方标准对拟输华肉产品企业进行审核,只向中方推荐符合标准和要求的企业。” 据李魁文介绍,中方通过对被推介企业事前、事中、事后的抽查,验证出口国家和地区。政府对出口企业审核监督的有效性,对能够持续符合中方标准要求的肉产品企业给予注册。在强化出口国企业和官方责任的同时,提高企业注册效率。进一步提高通关效率。在风险分析的基础上,科学动态调整进口肉类的随机抽查比例,对进口猪肉、冰鲜肉等产品优先通关验放,提高口岸通关效率。数据显示,今年前三季度我国进口猪肉132.6万吨,同比大幅增加43.6%。李魁文还表示,为支持国内生猪产业恢复生产,海关正在积极开拓相关进口来源,并开展相关检验检疫工作。针对防控非洲猪瘟措施,海关总署正密切配合有关部门开展防控非洲猪瘟措施联防联控,并采取最为严格的综合防控措施。前三季度我国进口贸易数据:前三季度,我国进口原油3.69亿吨,增加9.7%;煤2.51亿吨,增加9.5%;天然气7122.2万吨,增加10%。此外,进口铁矿砂7.84亿吨,减少2.4%;大豆6451.1万吨,减少7.9%。同期,进口猪肉132.6万吨,增加43.6%;进口牛肉113.2万吨,增加53.4%。

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