三起违法经营、运输病死猪案件的查处与思考     

陈炳中 《中国动物检疫》2016,33(1):37-39

福建省漳州市长泰县动物卫生监督所与公安等部门联合执法,查处了三起违法经营、运输病死猪的案件,通过分析讨论此类案件的法律适用和查处方法,认为收集病死猪用于养殖埃及胡子鲶应当属于经营病死猪行为,应依据《食品安全法》、《动物防疫法》和《饲料和饲料添加剂管理条例》进行查处。  相似文献   

2种大豆蛋白源替代鱼粉对埃及胡子鲇蛋白酶和淀粉酶活力的影响   总被引：1，自引：0，他引：1  

吴莉芳  吴亚男  陈玉珂  秦贵信  赵元  王洪鹤  孙玲 《上海交通大学学报(农业科学版)》2010,28(2)

为了研究不同大豆蛋白源对埃及胡子鲇(Clarias leather)蛋白酶活力和淀粉酶活力的影响.以初始体质量为[(13.06±0.09)g]健康的埃及胡子鲇为试验对象,以鱼粉为动物蛋白源,全脂豆粉和去皮豆粕为植物蛋白源,其中全脂豆粉和去皮豆粕分别替代20%鱼粉蛋白.配制3种等蛋白(40%)、等能(15.8 MJ·kg-1)的半精制饲料,在室内单循环控温养殖系统中进行为期6周的饲养试验.饲养试验结束后,分别采用福林-酚试剂法、碘-淀粉比色法测定了埃及胡子鲇胃、肝胰脏和肠道蛋白酶与淀粉酶的活力.结果表明,不同大豆蛋白源对埃及胡子鲇蛋白酶活力影响不同.在本试验条件下,试验组埃及胡子鲇的胃和肝胰脏蛋白酶活力都显著低于对照组(P<0.05).20%去皮豆粕替代组的前肠,中肠和后肠蛋白酶活力与对照组差异不显著(p＞0.05).20%全脂豆粉替代组的前肠、中肠和后肠蛋白酶活力显著下降(P<0.05).同时,从本试验研究结果可知,两种大豆蛋白源对埃及胡子鲇胃、肝胰脏、前肠、中肠和后肠淀粉酶活力的影响不显著(p＞0.05).  相似文献   

革胡子鲶出血性败血症病原菌的分离鉴定   总被引：2，自引：0，他引：2  

王玉娟  王秀华  曲宪成  朱岩松  黄倢 《淡水渔业》2012,42(3):32-37

从暴发性死亡的革胡子鲶(Clarias gariepinus)中分离出可疑病原菌株2010111403(简称1403),分别采用细菌全细胞脂肪酸鉴定系统、Biolog微生物自动鉴定系统及细菌16 S rDNA序列分析三种方法对其鉴定,结果表明菌株1403为嗜水气单胞菌(Aeromonas hydrophila)。分离菌株对健康革胡子鲶致病性测试表明其对革胡子鲶的半数致死剂量(LD50)为6.32×106菌落形成单位(CFU);实验感染革胡子鲶出现与自然发病相似症状,表明菌株1403是引起革胡子鲶发生暴发性死亡的主要致病病原。药敏试验表明,庆大霉素、四环素、阿奇霉素、氟哌酸、先锋霉素等9种抗生素对分离菌株有较强的抑制作用,但分离菌株对复方新诺明、克林霉素、罗红霉素等4种药物表现出耐药性。  相似文献   

Combined effects of photoperiod and temperature on growth and survival of African catfish (Clarias gariepinus,Burchell 1822) larvae under laboratory conditions     

Paul Sagwe Orina  Joseph Rasowo  Elijah Oyoo-Okoth  Safina Musa  Jonathan M. Munguti  Harrison Charo-Karisa 《Journal Of Applied Aquaculture》2013,25(1):17-25

ABSTRACT

The effect of photoperiod (24L:00D, 12L:12D, and 00L:24D) and temperature (22 ± 1°C and 28 ± 1°C) on performance of Clarias gariepinus larvae was tested. Larvae weighing 3.2 ± 0.24 mg were cultured in aquaria at a stocking density of 20 fish L^?1 and fed twice a day on catfish starter diet (40% CP) at 10 % BW day^?1. Highest mean weight gain (31.00 mg), SGR (7.56% day^?1), and survival (83%) were achieved at photoperiod and temperature combination of 00L:24D and 28 ± 1°C. Percent survival of larvae differed significantly (p < .05) among treatments with optimal survival of (83%) in treatment combination of 28 ± 1°C and 00L:24D, while lowest survival (40%) in treatment combination of 22 ± 1°C and 24L:00D.  相似文献   

Dietary available phosphorus requirement of juvenile walking catfish,Clarias leather     

H‐R. Yu  Q. Zhang  D‐M. Xiong  G‐Q. Huang  W‐Z. Li  S‐W. Liu 《Aquaculture Nutrition》2013,19(4):483-490

A feeding trial was conducted to evaluate the optimum requirement of dietary available phosphorus (AP) for juvenile walking catfish, Clarias leather. Six practical diets were formulated to contain graded levels (2.2, 3.9, 5.5, 7.1, 8.8 and 10.4 g kg^?1) of AP from dietary ingredients and monocalcium phosphate. Each diet was randomly fed to triplicate groups of fish with initial mean weight of 7.94 ± 0.08 g in floating cages (1.5 × 1.5 × 2.0 m) suspended in an earthen pond, and each cage was stocked initially with 60 fish. Fish were fed thrice daily (07:30, 13:00 and 17:30) to apparent satiation for 10 weeks. Both specific growth rate (SGR) and protein efficiency ratio significantly increased with increasing AP from 2.2 to 5.5 g kg^?1 (P < 0.05) and then levelled off. Dietary AP levels significantly influenced whole‐body protein, lipid and ash contents as well as condition factor and hepatosomatic index (P < 0.05). Whole‐body and vertebrae phosphorus contents showed similar patterns as SGR in response to dietary AP content. Broken‐line analyses based on SGR, phosphorus contents in the vertebrae and whole‐body indicated the AP requirements were 5.8, 7.2 and 7.5 g kg^?1, respectively.  相似文献   

Interbreeding of mouth malformed and crooked-back Clarias gariepinus （Burchell, 1822）     

Fagbuaro Omotayo 《农业科学与技术》2009,(12):44-50

Interspecific crossing was carried out among and between two strains of Clarias gariepinus with mouth malformation and crooked-back traits to determine the source（s） of their deformities and the effects of these morphological deformities on their growth and survival. Synthetic ovaprim hormone was used for their inducement at 0.5 mL/kg of the brood stock body weight at FEDAK integrated farm, Ado-Ekiti, Nigeria. Under indoor management, highest mean survival rate was 73% recorded in the hybrid of female mouth malformed C. gariepinus x male crooked back C. gariepinus and the least mean survival rate was 70% recorded in the mouth malformed C. gariepinus parental. Under outdoor rearing crooked back C. gariepinus parental had the highest mean growth rate （11.20 grammes） while the hybrid of the cross between female crooked back C. gariepinus and male with mouth malformed C. gariepinus had the least mean growth rate （8.63 grammes）. High frequency of occurrence of various morphological aberrations （0.92%） was recorded in the mouth malformed C. gariepinus parental and low frequency of occurrence （0.57%） of morphological aberrations recorded in hybrid of female crooked back C. gariepinus x male mouth malformed C. gariepinus. The reoccurrence of some of these morphological deformities in Clarias is a mystery based on their consistent occurrence even under a very good hatchery management. More research works still need to be done in this area of study of Clarias to unravel the mystery behind this morphological imbalance, because the deformities play special roles in discouraging both the farmers and the consumers of this fish.  相似文献   

放养密度对胡子鲇池塘集约化养殖效益的影响     

朱定贵 《安徽农业科学》2008,36(22)

[目的]确定池塘集约化单独饲养胡子鲇的最佳放养密度。[方法]胡子鲇以放养密度20、30和40尾/m2放养于3口池塘中,150 d后分别比较3口塘中胡子鲇的单位面积产量、生产成本、利润和投入产出比。[结果]放养密度为30尾/m2时,成本投入的效益转化率最高,养殖利润最大,利润达18.52元/m2,集约化养殖胡子鲇的放养密度以30尾/m2为宜。[结论]胡子鲇的最佳放养密度为30尾/m2。  相似文献   

Survival, growth, metabolism and behaviour of Clarias gariepinus (Burchell 1822) early stages under different light conditions     

Samuel Appelbaum  Ewa Kamler   《Aquacultural Engineering》2000,22(4):269-287

African catfish, Clarias gariepinus were exposed to total darkness (group D) or continuous light (L) during endogenous feeding. During external feeding some of the fish continued to be reared in darkness (DD) and some in light (LL), whereas two groups were exposed to reversed light conditions (groups DL and LD). Survival to the end of yolk absorption was 22% greater in fish exposed to darkness; during subsequent rearing survival decreased in the sequence DD>LD>DL>LL. The onset of external feeding was delayed by a few hours in the L-group as compared with the D-group. Fish reared in dark were larger than those reared in light; the size difference increased with age. In dark, the ratio of total metabolism to body growth (the R_tot/P ratio, both in terms of energy) was depressed, hence in the dark, energy used for locomotor activity may have been low, leading to increased investment in growth. We hypothesised that in juveniles light exerts an indirect effect by increasing locomotor activity which in turn promotes multiple encounters between individuals and enhances cannibalistic behaviour. During the fifth and sixth weeks post-fertilization the biomass of fish reared in the dark was about 175% of that in fish reared in light. Light restriction may be recommended as a simple, low-cost technique for intensification of production of C. gariepinus stocking material.  相似文献   

本地胡子鲶头甲溃烂症病原菌的分离与特性   总被引：1，自引：0，他引：1  

丁燏  唐啸尘  吴应根  Wu Zaohe  Wu Yinggen 《河北渔业》2009,(12)

从患头甲溃烂症的本地胡子鲶(Clarias fuscus)病灶处分离出1株细菌Hu02,用该菌株回归感染健康的本地胡子鲶,死亡率为100%,证明其是该病的致病菌。经细菌形态学观察,培养特征和生理生化反应测定,菌株Hu02被鉴定为嗜水气单胞菌(Aeromonas hydrophila)。经药敏试验结果表明,该菌株对氟哌酸、红霉素、利福平、庆大霉素等敏感。培养温度试验还表明,该菌株在4℃不生长,在17℃、28℃、37℃和42℃中均可生长,其中28℃是其最适生长温度。  相似文献   

革胡子鲶、本地胡子鲶及其杂交种血清转铁蛋白的遗传多态性     

夏敏  牟希东  罗渡  胡隐昌  宋红梅  杨叶欣  罗建仁 《广东农业科学》2012,39(1):132-135

用聚丙烯酰胺凝胶电泳测定了革胡子鲶(Clarias gariepinus)、本地胡子鲶(Claris fuscus Lacepede)及其杂交个体F1的血清转铁蛋白(Tf)的多态性。结果表明,3种鲶鱼均出现2个Tf区域,即Tf一区和Tf二区,革胡子鲶在一区的表达量最高,且没有缺失现象;3种胡子鲶受3个等位基因控制,本地胡子鲶出现4种表现型,革胡子鲶与杂交个体只有2种表现型,Tf杂合体基因型均大于纯合体基因型;血清铁浓度:革胡子鲶>杂交个体>本地胡子鲶,铁饱和度:革胡子鲶>本地胡子鲶>杂交个体。说明革胡子鲶具有更强的耐低氧能力,更能适应恶劣环境。  相似文献