卷首语

<正>炎炎夏季令人心情烦闷,猪价回升也毫无迹象,本刊衷心希望:本期的"提高母猪繁殖性能"专题能稍减广大养猪场(户)对猪价的焦虑,为读者提供一些思路、一丝清凉的宽慰。众所周知,与欧美等先进国家相比,中国的规模化养殖要落后很多。据报道,美国、加     

2008年10月奶业形势分析

2008年10月,国内鲜奶市场零售价格环比基本保持平稳,同比有所上升但如果考虑乳品企业的促销行为,实际价格有所下降。乳制品进出口呈现双增长,出口增幅明显高于进口增幅。国际市场上,澳大利亚原奶产量回升,乳制品出口量增幅较大;美国原奶收购价格与9月基本持平,欧盟继续回升,新西     

近期企稳的鸡蛋价格后期看涨

<正>在生猪价格连续下跌3个月后,终于呈现企稳回升的迹象。与此同时,来自市场的数据表明,鸡蛋价格也开始止跌反弹。对此,专家们普遍看好后期肉蛋价格上涨。鸡蛋价格也开始回升。"4月1日,鸡蛋的批发价是2.9元/500克,5月10日的价格是     

美国葡萄柚汁价格有望回升

据商务部土畜频道消息,目前美国葡萄柚汁消费量不断增长,预计未来葡萄柚浓缩汁的数量也不会很多。因此,美国葡萄柚汁的价格有望回升。受柑     

2018上半年河北省畜牧业产销形势分析

正上半年,面对畜产品生产增长放缓和环保治理持续高压的态势,全省以供给侧结构性改革为主线,深化产业结构调整,加快转型升级,有效应对挑战,畜牧业经济运行质量效益持续改善,呈现出:"生猪出栏加快,猪价触底回升;蛋鸡产能缓慢恢复,蛋价高位回调;奶价企稳回升,奶业振兴步伐加快;牛羊肉价格高位运行,养殖形势较好;肉鸡产能下调,活鸡价格上涨"良好发展态势。一、生猪出栏加快,猪价触底回     

全国生猪价格3个月累计跌幅达31％

正当前猪粮比价已经连续6周低于5.5∶1,大部分养殖户和养殖企业已经亏损。猪价5月份有望止跌,6月份开始可能有效回升,但三季度回升属于季节性回升,回升空间不大"白条猪月度加权平均批发价自3月份降到近5年同期最低点以后,4月份猪肉价仍然处于近5年同     

2018蛋鸡行业产能或在年中开始回升6注关

正产能或在2018年中前开始回升2017年下半年蛋价开始回升,"千呼万唤"的产能恢复或在2018年中之前出现,此后新一轮鸡周期将到来。分析主要基于三点因素:一是关于农业部的数据,业内人士普遍认为由于统计样本的局限,并没有太大代表性;二是近两年大型企业集团新建鸡场陆续投产,正式转化成产能;三是2017年是国内禁养整治大限之年,2018年以后鸡场拆迁逐渐减少,减缓产能清退。饲料企业更加"不务正业"饲料企业的利润越来越低,难以支撑     

近期猪肉价格震荡回落 后期有望小幅上涨

<正>2017年以来,我国生猪养殖业转型升级效果明显,生猪养殖呈现缓慢复苏态势,猪肉供给小幅增长。春节之后,终端需求季节性回落,猪肉价格持续下降,生猪养殖利润大幅缩减。三季度受适重肥育猪数量下降、"双节"前消费需求增加影响,价格低位小幅回升。随着节日效应减退,近期猪肉价格再次震荡回落。1近期市场情况1.1市场供给小幅增长2017年以来生猪及猪肉供应呈稳步小幅回升     

第一季度猪肉市场分析

第一季度我国猪肉产量比上年同期有一定幅度的增长 ,生猪存栏比上年增加 ,出栏保持较快增长 ;国内生猪和猪肉价格下跌 ,猪粮、猪料比下降。国际方面 ,欧盟、美国猪肉价格回升 ;1～2月份 ,我国猪肉进、出口均增长 ,活猪出口下降。     

2021年豆粕市场分析及2022年预测

2021年,全球大豆供需格局由紧张转向紧平衡,美国大豆产量止降回升,南美大豆丰产预期较强,中国大豆需求放缓,全球大豆期末库存先降后增,全球大豆价格先涨后跌.5月12日,美国大豆期末库存降至7年新低,CBOT主力合约价格创下年内新高1667.5美分/蒲式耳,仅次于2012年9月的历史最高1789美分/蒲式耳;11月9日,...     

中国饲料工业协会第五届理事会顾问、会长、常务副会长、副会长、秘书长、副秘书长、常务理事、理事名单

顾问刘中一张德邻宋瑞祥聂振邦张子仪戎易王维四会长白美清国务院原副秘书长、第四届理事会会长常务副会长(8人,以姓氏笔划为序)刘永好新希望集团董事长、第四届理事会副会长刘汉元通威股份有限公司董事长、第四届理事会副会长陈丹广东恒兴集团股份有限公司董事长、第四届理事会副会长张延喜农业部原副部长、第四届理事会副会长吴明夏湖南正虹科技发展股份有限公司董事长、第四届理事会副会长陶一山唐人神集团股份有限公司董事长、第四届理事会副会长温鹏程广东温氏食品集团有限公司董事长、第四届理事会副会长谭竹洲原化学工业部副部长、第…     

Evidence for the non-involvement of the uterus in the lifespan of the corpus luteum in the cyclic dog

Progesterone levels in peripheral blood of dogs were analysed during the cycle in which hysterectomy (n = 5) or sham surgery (n = 3) was performed as well as during the cycle of dogs (n = 5) hysterectomized at least one year prior to this study; the data were compared with the findings in control dogs (n = 3). The averages of the duration of the luteal period observed in the three experimental groups were not significantly different from those of control dogs. Immediately after surgery, the progesterone level decreased from 25 to 50% of the presurgical level, but returned to presurgical level in about four days. Prolactin levels were elevated for about 30 h after surgery. Nevertheless, the averages of the mean prolactin levels for each animal during the luteal period of the experimental groups were not significantly different from those of control dogs. It is concluded that in the dog, the uterus is not involved in the lifespan of the cyclic corpus luteum.     

The influence of the width of the saddle tree on the forces and the pressure distribution under the saddle

As there is no statistical evidence that saddle fit influences the load exerted on a horse's back, this study was performed to assess the hypothesis that the width of the tree significantly alters the pressure distribution on the back beneath the saddle. Nineteen sound horses were ridden at walk and trot on a treadmill with three saddles differing only in tree width. Kinetic data were recorded by a sensor mat. A minimum of 14 motion cycles were used in each trial. The saddles were classified into four groups depending on fit. For each horse, the saddle with the lowest overall force (LOF) was determined. Saddles were classified as "too-narrow" if they were one size (2 cm) narrower than the LOF saddle, and "too-wide" if they were one size (2 cm) wider than the LOF saddle. Saddles two sizes wider than LOF saddles were classified as "very-wide". In the group of narrow saddles, the pressure in the caudal third (walk 0.63 N/cm(2)+/-0.10; trot 1.08 N/cm(2)+/-0.26) was significantly higher compared to the LOF saddles (walk 0.50 N/cm(2)+/-0.09; trot 0.86 N/cm(2)+/-0.28). In the middle transversal third, the pressure of the wide saddles (walk 0.73 N/cm(2)+/-0.06; trot 1.52 N/cm(2)+/-0.19) and very-wide saddles (walk 0.77 N/cm(2)+/-0.06; trot 1.57 N/cm(2)+/-0.19) was significantly higher compared to LOF saddles (walk 0.65 N/cm(2)+/-0.10/ 0.63 N/cm(2)+/-0.11; trot 1.33 N/cm(2)+/-0.22/1.27 N/cm(2)+/-0.20). This study demonstrates that the load under poorly fitting saddles is distributed over a smaller area than under properly fitting saddles, leading to potentially harmful pressures peaks.     

浅谈对症用药

对症用药就是通过对患病信鸽的症状进行诊断,进而确定病属,选择药物及如何用药的方法。     

军犬鉴别中的嗅源培养和易出现的问题及对策

嗅源是军犬嗅觉作业训练的依据.军犬鉴别中嗅源能力的培养在整个鉴别训练中占有重要地位,关系到鉴别训练的成败和鉴别能力的提高.所以,军犬在嗅认嗅源时必须按照训犬员的指令充分、细致地感受嗅源气味,并且对嗅源气味产生兴奋反应.如何培养军犬充分嗅认嗅源以及及时解决嗅认过程中出现的问题,成为我们进行鉴别训练的关键.……