训犬员,警营里的一道多味麻辣汤

在云南德宏边境一线,常年活跃着这样一群年轻士兵,他们身穿橄榄绿,终日与犬为伴。巡逻路上,他们带着警犬跋山涉水,风餐露宿,把足迹踏遍边境线上的每     

Use of comparative proteomics to identify the effects of creatine pyruvate on lipid and protein metabolism in broiler chickens

Four hundred male chickens were selected to study the effects of pyruvate (Pyr), creatine pyruvate (CrPyr) and creatine (Cr) on the expression of hepatic mitochondrial and cytoplasm proteins associated with lipid and protein metabolism. Mitochondrial purification was accomplished using the two-step differential centrifugation and density gradient method, and the activities of organelle-specific marker enzymes were determined to assess the purity of the mitochondria. Proteins were extracted and fractionated by two-dimensional electrophoresis and the differential protein spots were assessed by matrix-assisted laser desorption/ionization-time of flight mass spectrometry. CrPyr reduced fatty acid accumulation by down-regulating adipose differentiation-related protein, inhibited ATP synthase expression, and reduced cholesteryl ester transfer protein (CETP) expression, thus reducing the levels of high density lipoprotein and triglycerol (TG) levels (thereby lowering fat and cholesterol deposition). CrPyr increased the expression of eukaryotic translation initiation factor (eIF) 2B, calreticulin (CRT) and eIF3a, thus promoting protein synthesis. CrPyr up-regulated the expression of fatty acid-binding proteins, CETP and apolipoprotein A-IV in cytoplasmic extracts, and these proteins accelerated the decomposition of fatty acids and TG, thus reducing fat deposition. In conclusion, CrPyr plays an important role in lipolysis and protein synthesis, and this effect was more pronounced than was the effect of Pyr and Cr.     

山东省沂南县动物强制免疫“先打后补”现状分析

2021年,沂南县推进动物疫病强制免疫“先打后补”工作,依托“鲁牧云”信息平台,通过强化组织领导,加强政策宣贯,强化人员培训,放开强免疫苗经营渠道,提供抗体检测无偿服务等措施,提升了养殖场户“先打后补”的积极性、自主性、灵活性,强化了养殖场户动物防疫主体责任,满足了养殖场户疫苗多样化需求。但由于 “先打后补”补助金额少、社会化服务不规范、基层动物防疫体系弱化、缺少配套工作经费等原因,部分养殖场户实施“先打后补”的积极性不高。建议通过规范社会化服务组织,强化培训水平,提高补助标准,强化三级（县乡村）基础设施建设,升级“鲁牧云”等措施,确保“先打后补”政策惠及更多养殖场户。     

多变小冠花中β－硝基丙酸含量的研究

对不同品种小冠花在不同生长年限、不同发育阶段和不同器官及不同生长年限的β－硝基丙酸含量进行了研究。结果表明：不同品种β－硝基丙酸含量是不相同的，一年生含量范围为１８．３～２３；１ｍｇ／ｇ，二年生含量范围为２２．３～３５．９ｍｇ／ｇ。在不同发育阶段以盛花期含量最高。器官中以青荚果含量最高，根中含量最低。以上的结果为小冠花的毒性研究和小冠花的利用提供了科学依据。     

大力推广方格蔟,提高蚕茧质量

本文在总结湖州雠主格蔟成绩的基础上,针对当前在方格蔟推广上存在的问题,提出了大力推广方格蔟,提高茧质的建议。     

天祝白牦牛产业可持续发展思考

天祝白牦牛是珍贵的地方牦牛品种。通过对天祝白牦牛产业资源优势分析提出了可持续发展的建议。以期天祝白牦牛产业在振牛产业在振兴当地经济保护青藏高原生物多样性方面起到重要作用。     

山东小尾寒羊研究概况

介绍了山东小尾寒羊的研究概况 ,主要内容包括该品种的繁殖性能、屠宰性能、杂交利用等方面的最新研究成果 ,比较全面地阐述了山东小尾寒羊的种质特性。     

同工酶与动物发生遗传学

本文对同工酶与动物发生遗传学各自的形成、发展以及二者的结合等问题作了概括的阐述。     

四川猪2型链球菌病的PCR检测

2005年7月中下旬,四川贵阳等地人、猪陆续发生一种发病惠、死亡快、高度散发的疾病,从病死猪组织中分离出19株链球菌,设计合成3对引物,分别对分离菌株进行了猪链球菌16SrRNA、CPS2J、MRP基因片段扩增,有15株菌3个基因的扩增结果均为阳性,表明此次疲情的病原为猪2型链球菌。     

饲料对乳制品风味的影响

低脂奶牛日粮会提高风味干酪内源脂肪酸中硬质脂肪水平、蓝干酪风味甲基酮和桃色椰子风味δ-内酯的前体物,而高脂奶牛日粮则与之相反。日粮在瘤胃中产生的丙酸代谢能从日粮油酸中形成芳香味的γ-十二烷内酯、从日粮亚油酸中形成芳香味的γ-十二-顺-6-内酯。味美牧草会产生富含颜色的奶脂肪,并把植醇、二氢植醇、植物烯、植二烯以及它们的低等同族体引入到奶脂肪中。无蛋白合成日粮会降低动物风味的吲哚和粪臭素。