吉林省食品安全信用体系存在的问题与对策     

李范英 《当代生态农业》2010,(Z2)

目前,吉林省食品安全事故频发的重要原因就是食品生产经营企业信用的严重缺乏,为此,本文分析了吉林省食品生产企业存在的问题及产生问题的原因,并提出了加快食品安全信用体系建设的对策。  相似文献   

银纹夜蛾人工饲养技术研究   总被引：2，自引：0，他引：2  

刘军  刘复生 《昆虫天敌》1994,16(4):170-174

本文在研究了各种环境因子对银纹夜蛾实验种群影响的基础上，进一步研究了食量，低温保种及饲养管理技术，设计了一种便于收集卵的新型产卵笼，并总结了人工饲养银纹夜蛾的技术要点。  相似文献   

品种、年龄及活重对牛产肉性能的影响     

王丽哲  刘丽  周光宏 《中国牛业科学》2001,27(4):12-16

为了确定在优质牛肉生产中所需解决的宰前关键问题,本文在相同饲养条件下品种、年龄及体重等因素对牛产肉性能的影响做了研究。结果表明,品种对牛肉的品质和产量都有显著或较显著的影响,其中晋南牛牛肉品质最佳;活重对牛肉产量有较大影响;年龄主要对肉质影响显著,其中年龄在2-2.5岁间的牛肉嫩度最好,因此,要提高牛肉的生产水平应以产肉性能优良的品种作牛源,同时选择年龄小、体重大的个体。  相似文献   

Effects of acid extracts of tomato (Lycopersicon esculentum Mill.) and carrot (Daucus carota L.)wastes from the food industry on the growth of some crops and weeds     

TOSHISADA SUZUKI  IZUMI USUI  KAORI TOMITA-YOKOTANI  SHINYA KONO  HIROKAZU TSUBURA  YOICHI MIKI  KOJI HASEGAWA 《Weed Biology and Management》2001,1(4):226-230

The effects of acid extracts of tomato ( Lycopersicon esculentum Mill.) and carrot ( Daucus carota L.) juice wastes from the food industry on the growth of five species of crops and four weeds were examined. The acid extract of the tomato juice waste promoted the shoot and root growth of tomato, Chinese cabbage, corn, and radish, but not the growth of oat seedlings. The extract did not promote the shoot growth of weeds tested, and it inhibited the root growth of the weeds that included barnyardgrass ( Echinochloa oryzicola Ohwi), southern crabgrass ( Digitaria ciliaris Koel.) and Japanese barnyard millet ( Echinochloa utilis Ohwi). The carrot juice waste was also examined as another waste from the food industry. The effect of the acid extract of carrot juice waste showed significant promoting effects on the root growth of Chinese cabbage; however, the effects on other plants were lower than that of tomato juice waste. It also did not inhibit the growth of weeds. These results suggested that the acid extract from tomato juice waste is useful as plant-growth substances because they have a promoting effect on the shoot and root growth of crops, and an inhibitory effect on the root growth of some weeds.  相似文献   

Performance of Broiler Chickens Fed Sweet Potato Meal (Ipomoea batatas L.) Diets     

Agwunobi LN 《Tropical animal health and production》1999,31(6):383-389

Day-old Lohman broiler chicks (n = 120) were fed on five starting diets for 4 weeks in groups of 24 birds. The starting diets contained 0%, 9%, 18%, 27% and 36% sweet potato tuber as a replacement for maize. From the fifth week, the 120 birds were tested in groups of 30 on four finishing diets containing 0%, 15%, 30% and 45% sweet potato tuber as a replacement for maize. The carcass quality was significantly (p>0.05) improved due to a significant (p>0.05) reduction of abdominal fat in the birds fed on the 45% sweet potato finisher diets. However, the birds on the sweet potato diet continually passed wet dropppings, resulting in a significant (p>0.05) reduction in body weight and feed conversion efficiency. The optimum levels of inclusion of sweet potato in the diets were considered to be 27% and 30% for starting and finishing broiler chickens, respectively. Sweet potato diets may be a remedy for fatty broilers.  相似文献   

Growth and Apparent Absorption of Minerals in Broiler Chicks Fed Diets with Low or High Tannin Contents   总被引：5，自引：1，他引：4  

Hassan IA  Elzubeir EA  El Tinay AH 《Tropical animal health and production》2003,35(2):189-196

Sorghum grains with low (0.28 per cent catechin equivalent (%CE) or high (1.36 %CE)) tannin contents were used to study the effect of tannin on growth and on the apparent absorption of Ca, P, Mg, Na, K, Fe and Co by chickens. High-tannin sorghum caused a highly significant (p0.01) reduction in the weight gain and feed intake of broiler chicks compared to low-tannin sorghum and increased the feed conversion ratio (p0.01). The amount of tannin did not affect mortality. The apparent absorption of Ca, P, Mg, Na, K, Fe and Co was reduced (p0.01) by feeding sorghum grains with a high tannin content.  相似文献   

The effects of low doses of Senna occidentalis seeds on broiler chickens     

Haraguchi M  Dagli ML  Raspantini PC  Górniak SL 《Veterinary research communications》2003,27(4):321-328

The effects of 0.5%, 0.3% and 0.1% w/w concentrations of Senna occidentalis (So) seed mixed with commercial ration were studied in 18 groups of 32 broiler chicks each, from 1 day to 49 days of age. Three groups were fed one of the rations throughout their lives (TL). Three other groups were fed one of the rations from the 1st to the 28th day of life (starter phase, SP), and the final 3 groups were fed one of the rations from the 29th to 49th day (finisher phase, FP). Each experimental group was matched by a control group fed the same diet over the same period but without the inclusion of So. All the animals were killed at 49 days of age, and blood was collected from 10 birds in each group for biochemical studies (ALT, AST, GGT, LDH, UA). A complete necropsy was performed on 3 birds from each group. No significant differences in the biochemical parameters in the serum were found between the control and experimental chicks, but animals treated with 0.5% So in groups FP and TL, gained less weight and chicks that received 0.3% So or 0.5% So in the ration throughout life (TL) had a larger feed conversion ratio. Besides this, degenerative changes were found in the striated skeletal muscle in the chest, in the myocardium and in the liver in the animals that received the higher concentrations of So seeds.  相似文献   

Effects of Supplementing a Basal Diet of Chloris gayana Hay with One of Three Protein-rich Legume Hays of Cassia rotundifolia,Lablab purpureus and Macroptilium atropurpureum Forage on Some Nutritional Parameters in Goats     

Mupangwa JF  Ngongoni NT  Topps JH  Hamudikuwanda H 《Tropical animal health and production》2000,32(4):245-256

Growth and digestibility experiments were conducted on growing East African type goats offered Chloris gayana hay supplemented with one of three high-protein (119–128 g CP/kg DM) legume hays, Cassia rotundifolia (cassia), Lablab purpureus (lablab) or Macroptilium atropurpureum (siratro), and crushed maize to investigate the feed intake, digestibility, growth and urinary excretion of purine derivatives. Goats in the supplemented groups had higher total dry matter and nitrogen intakes and higher N retention and body mass gains than unsupplemented counterparts. The digestibility of dry matter, organic matter and neutral detergent fibre were increased by protein supplementation. Animals on supplemented diets had higher fractional outflow rates of particulate matter from the rumen. The production of protein by ruminal microbes and the efficiency of microbial N production were increased by supplementation. It was concluded that a mixture of low-quality grass hay (61.9 CP/kg DM) and either cassia, lablab or siratro hay, and maize grain can provide a productive balanced diet for growing goats.  相似文献   

饲料对乳制品风味的影响     

马燕芬  卢德勋 《乳业科学与技术》2007,29(6):312-316

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。  相似文献   

仔猪断奶应激及其营养调控     

李维  冯培刚  王恬 《家畜生态学报》2007,28(6):1-4

综述了断奶应激对仔猪的影响,分析了应激发生的原因,阐述了相应的饲养调控措施,以期为早期断奶应激综合症的防治和科学饲养管理断奶仔猪提供理论依据.  相似文献