强化管理措施提高种场效益

重庆市西里蚕种场创建于1935年,已有70年专业从事家蚕普种繁育推广的历史,是重庆市生产规模最大的家蚕普种专业繁殖场,是农业部蚕桑产品质检中心定点单位、西南农业大学蚕学与生物技术学院教学科研实习基地和蚕桑新品种试验基地.     

以质为本创品牌改革务实求发展

重庆市西里蚕种场创建于1935年,已有70余年专业从事桑蚕良种繁育与推广历史,是重庆市生产规模最大的桑蚕普种专业繁殖场,是农业部蚕桑产业产品质量检测中心定点单位、西南大学蚕学与生物技术学院教学科研实习基地和蚕桑新品种试验基地。2005年,在重庆市外经贸委的领导下,我场坚     

以质为本强管理优质服务增效益

重庆市西里蚕种场创建于1935年,已有70年专业从事家蚕普种繁育推广而奉献蚕业的光荣历史,现为重庆市生产规模最大的家蚕普种专业繁殖场,是国家农业部蚕桑产业产品质量监督检验测试中心定点单位、西南农业大学蚕学与生物技术学院教学科研实习基地和蚕桑新品种试验基地.     

农业部为我市蚕桑产业定点单位授牌

重庆市西里蚕种场最近被农业部确定为蚕桑产业定点单位。日前 ,农业部测试中心主任李奕仁研究员专程来渝为该场授牌。创办于 1 935年的市属西里蚕种场 ,从事家蚕良种的繁育推广已有六十余年 ,现在是重庆市生产规模最大的专业普种场。这次因其生产的蚕种质量优、品种新、服务好、辐射广而被农业部确定为首批蚕桑产业定点单位。农业部为我市蚕桑产业定点单位授牌     

重庆市西里蚕种场——桑椹牌蚕种 70年精良品牌

重庆市西里蚕种场创建于1935年,是重庆市规模最大的家蚕一代杂交种繁育基地,是农业部蚕桑产品质量检测中心定点单位和西南大学教学科研实习基地、蚕桑新品种试验基地。桑椹牌蚕种是蚕农致富所珍爱与推崇的品牌。     

重庆市蚕业科学技术研究院

重庆市蚕业科学技术研究院（重庆市蚕桑技术推广站）由原重庆市北碚蚕种场、重庆市西里蚕种场于2011年7月合并组建而成,其前身创建于1935年,在中国西南地区最早从事家蚕良种繁育事业,拥有丰富的桑、蚕种质资源和雄厚的技术力量,是重庆市蚕业科学技术推广培训单位,年承担多项国家、市科研项目,可繁育原种2万张、普种35万张。为农业部蚕桑产业产品质量检测中心定点单位,国家商务部“东桑西移”工程配套单位,重庆市桑、蚕品种资源保护单位,西南大学教学科研实习基地和蚕桑新品种试验基地。     

重庆市西里蚕种场

桑椹牌蚕种70年精良品牌重庆市西里蚕种场创建于1935年,是重庆市规模最大的家蚕一代杂交种繁育基地,是农业部蚕桑产品质量检测中心定点单位和西南大学教学科研实习基地、蚕桑新     

重庆市蚕业科学技术研究院

正重庆市蚕业科学技术研究院(重庆市蚕桑技术推广站)由原重庆市北碚蚕种场、重庆市西里蚕种场于2011年7月合并组建而成,其前身创建于1935年,在中国西南地区最早从事家蚕良种繁育事业,拥有丰富的桑、蚕种质资源和雄厚的技术力量,是重庆市蚕业科学技术推广培训单位,年承担多项国家、市科研项目,可繁育原种2万张、普种35万张。为农业部蚕桑产业产品质量检测中心定点单位,国家商务部"东桑西移"工程配套单位,重庆市桑、蚕品种资源保护单位,西南大学教学科研实习基地和蚕桑新品种试验基地。     

重庆市蚕业科学技术研究院

正重庆市蚕业科学技术研究院(重庆市蚕桑技术推广站)由原重庆市北碚蚕种场、重庆市西里蚕种场于2011年7月合并组建而成,其前身创建于1935年,在中国西南地区最早从事家蚕良种繁育事业,拥有丰富的桑、蚕种质资源和雄厚的技术力量,是重庆市蚕业科学技术推广培训单位,年承担多项国家、市科研项目,可繁育原种2万张、普种35万张。为农业部蚕桑产业产品质量检测中心定点单位,国家商务部"东桑西移"工程配套单位,重庆市桑、蚕品种资源保护单位,西南大学教学科研实习基地和蚕桑新品种试验基地。     

重庆市蚕业科学技术研究院

正重庆市蚕业科学技术研究院(重庆市蚕桑技术推广站)由原重庆市北碚蚕种场、重庆市西里蚕种场于2011年7月合并组建而成,其前身创建于1935年,在中国西南地区最早从事家蚕良种繁育事业,拥有丰富的桑、蚕种质资源和雄厚的技术力量,是重庆市蚕业科学技术推广培训单位,年承担多项国家、市科研项目,可繁育原种2万张、普种35万张。为农业部蚕桑产业产品质量检测中心定点单位,国家商务部"东桑西移"工程配套单位,重庆市桑、蚕品种资源保护单位,西南大学教学科研实习基地和蚕桑新品种试验基地。蚕科院秉承"科技创新,质量为本,优质服务,勇创一流"的宗旨,开展蚕业应用技术研究,蚕桑新品种选育、试验、示范及推广,蚕桑技术指导,良种繁育、     

Anaesthesia and analgesia of the donkey and the mule

The number of donkeys and mules throughout the world is stable, and awareness of their use and concern for welfare, pain recognition and treatment are receiving increasing veterinary interest. Therefore, accurate information about anaesthesia and analgesia in donkeys and mules is important to ever more equine practitioners. Since donkeys are physiologically and pharmacologically different from horses, knowledge on species specific aspects of anaesthesia and analgesia are very important. Mules combine elements from both donkey and horse backgrounds, leading to great diversity in size, temperament and body type. Physiologically, they seem to resemble horses more than donkeys. This review highlights the current knowledge on various anaesthetic and analgesic approaches in donkeys and mules. There is still much information that is not available about donkeys; in many circumstances, the clinician must use available equine information to treat the patient, while monitoring carefully to observe for differences in response to therapy compared to the horse.     

Ultrasonographic examination of the caecum and the proximal and spiral ansa of the colon of cattle

The large intestine of 10 cows was examined from the right abdominal wall with a 3.5 MHz linear transducer. The cows were then slaughtered, and the organs were re-examined in a water bath. The caecum was visualised from the middle region of the abdominal wall. It ran caudo-cranially, varied in diameter from 5.2 to 18.0 cm and was situated immediately adjacent to the abdominal wall. The lateral wall of the caecum appeared as a thick, echogenic, crescent-shaped line. It could be visualised as far cranially as the 12th intercostal space. Although its junction could not be identified, the proximal ansa of the colon was recognised on the basis of its anatomical position and its diameter, which was smaller than that of the caecum. The spiral ansa of the colon and the descending colon were situated dorsal to the caecum and could be identified by moving the transducer horizontally along the abdominal wall to the last rib. The spiral ansa of the colon was situated ventral to the descending colon, and its walls appeared as thick echogenic lines. In a contracted state, the spiral colon had the appearance of a garland.     

The behavior and the husbandry conditions of small laboratory animals--possibilities and limits of the evaluation of the appropriateness and fairness of the treatment of animals

Ethological studies are important means to evaluate the behaviour of small laboratory animals (mouse, rat, guinea-pig and rabbit) and their housing conditions. At any rate, the only sparse range of body expressions, the smallness and preference of night activity of these animals and the erratic occurrence of essential behaviour patterns make the investigations more difficult. On the other hand, the standardization of laboratory housing and the genetic definition of these animals turn out to be favourable. By this way, behaviour-environment-relationships are suitable for evaluation. Taking into consideration methodical and biological restrictions, the specific activities such as fight, relaxed resting behaviour and play as well as unbalanced behaviour patterns and stereotypes can be taken as means of evaluation. Particularly in mice and rabbits, upright position and space consuming activities will be possibly restricted by cage sizes.     

Effects of age and diet on the development of the pancreas and the synthesis and secretion of pancreatic enzymes in the young pig

Effects of age and diet composition on amylase, trypsin and chymotrypsin activities in the pancreas and intestinal contents, pancreas weights and body weights were determined from birth to 56 d. A total of 120 pigs, five to seven pigs/litter from 18 litters, were slaughtered at birth, 14, 27, 29, 31, 42 and 56 d. Litters were allotted to dietary treatments (corn-soy, A; corn-soy + 20% dried whey, B; corn-soy + 5% lard, C) and offered these diets as creep feed at 14 d. All pigs were weaned at 28 d, placed in elevated nursery pens and fed their respective diets. Total activities of amylase, trypsin and chymotrypsin in the pancreas and small intestine increased (P less than .05) with age. Both trypsin and amylase activities, measured per kilogram body weight or gram pancreas weight, were low at 29 d in the intestine and increased to 56 d. Pigs on diet B had the highest level of trypsin and chymotrypsin in the intestinal contents (P less than .05). Trypsin activity in the pancreas (units/kg body weight) was lowest (P less than .05) for pigs on diet B and highest (P less than .05) for those on diet C (units/g pancreas and units/kg body weight). Amylase activity (units/kg body weight) was lower (P less than .05) in the pancreas for pigs on diet B than for those on diets A and C. Pigs on diet A had lower (P less than .01) intestinal amylase activities than those on diets B and C. Enzyme activities in the intestinal contents and pancreas were low following weaning. In the pancreas, activities decreased at 31 d.(ABSTRACT TRUNCATED AT 250 WORDS)     

Relation between the concentration of sodium and potassium in the erythrocytes of dairy cows and the concentration of these elements in the plasma and urine and the level of blood glucose

Blood and urine samples of 180 dairy cows from 12 herds were examined. Sodium and potassium concentrations were determined in erythrocytes, whole blood, plasma, urine, and glucose concentration in blood: the interrelations were compared. Sodium and potassium concentrations in erythrocytes were 85.15 +/- 11.45 mmol/l, and 25.93 +/- 7.81 mmol/l, respectively. A statistically significant relation was found between sodium and potassium concentrations in erythrocytes (r = 0.3467+++) and the content of electrolyte in blood cells and in whole blood (Na: r = 0.5336+++; K: r = 0.3561+++). No statistically significant relation of intraerythrocyte concentration of both electrolytes was confirmed with respect to the other characteristics (sodium and potassium concentrations in plasma and urine, and glucose concentration in blood). In the conditions of routine laboratory diagnostics in clinically healthy cows, determinations of intraerythrocyte sodium and potassium do not broaden possibilities of evaluating the metabolic state of these electrolytes and cannot be used as the characteristics of energy insufficiency. The cannot replace the analyses performed in serum and urine.     

Liquid flow and capacity of the caecum and colon of the horse

The rate of flow of fluid from the caecum and from the large colon was measured in four Shetland-type ponies fed a hay diet. In two ponies with cannulas in the caecum and at the origin of the right ventral colon, a continuous intracaecal infusion of a solution of chromium EDTA was used and samples were obtained from the cannula at the origin of the right ventral colon. Based on four determinations, the liquid flow from the caecum was 54.2 +/- 1.89 litres d-1. In the other two ponies with cannulas in the origin of the right ventral colon and near the end of the right dorsal colon, a continuous infusion of chromium EDTA was made into the right ventral colon and samples were obtained from the right dorsal colon. The flow rate towards the end of the dorsal colon was 49.4 +/- 1.25 litres d-1, based on four determinations. The capacities of the caecum and large colon after death were 7.0 +/- 0.8 and 17.7 +/- 3.7 litres, respectively.     

貉,蓝狐,银狐的胃及十二指肠内嗜银细胞形态分布的研究

本文应用Ｆｏｒｔａｎａ—Ｍａｓｓｏｎ嗜银颗粒染色法研究了貉、蓝狐、银狐的胃及十二指肠内嗜银细胞的形态分布。结果表明：三种动物胃幽门腺中，嗜根细胞数量最多，呈锥状，嗜银颗粒较粗，密度大、染成深黑色。在胃底及胃贲门腺区、嗜银细胞数量少。在十二指肠部嗜银细胞呈蝌蚪形，嗜银颗粒细，呈黑褐色，密度较小。嗜银细胞的分布密度在三种动物中具有一定的差别。     

Conduction velocities and reflexes of the proximal and distal parts of the saphenous nerve of the dog

The maximal conduction velocities of compound-action potentials in the proximal and distal parts of the saphenous nerve were determined by averaging potentials evoked and recorded through needle electrodes. Antidromic, triphasic compound-action potentials unipolarly recorded from the distal part of the saphenous nerve were of the same minimal latency as potentials having 4 phases which were recorded bipolarly from the same site. However, the unipolarly recorded potentials were of greater amplitude. Monophasic compound-action potentials were recorded through bipolar chlorided silver electrodes from the surface of fascicles of the distal part of the saphenous nerve. The maximal conduction velocity of these potentials was in agreement with the conduction velocity of compound-action potentials of the distal part of the saphenous nerve which were evoked and recorded through subcutaneous needle electrodes. The specificities of the stimulating and recording sites were verified by recording before and after the saphenous nerve was cut between the stimulating and recording sites. Mean conduction velocities were 62.3 +/- 2.0 m/s for the distal part of the saphenous nerve and 66.3 +/- 2.2 m/s for the proximal part of the saphenous nerve. Reflex-evoked muscle activity was elicited in the ipsilateral tensor muscle of the fascia lata and semimembranous muscle after electrical stimulation of the saphenous nerve through subcutaneous needle electrodes. The effects of various stimulus intensities on the latency and duration of these reflex-evoked muscle potentials were determined.