Research Progress on Detection Methods of Feed Additives     

ZHU Yu-fei  XIE Shu-yu  CHEN Dong-mei  WANG Yu-lian  PAN Yuan-hu  PENG Da-peng  TAO Yan-fei  YUAN Zong-hui 《中国畜牧兽医》2016,43(7):1785-1791

With the development of animal husbandry and the widespread use of feed additives,the indiscriminate use and abuse of feed additives had become a problem to be settled.In the study,the detection techniques of feed additives and the shortages of feed additive detection technology at present were summarized.At the same time,the development trend of feed additives for high-throughput screening technology was described,aiming to apply the technical supports for the green and safe production.  相似文献   

The temperature of storage of a batch of wheat distillers dried grains with solubles samples on their nutritive value for broilers     

I. Whiting  S. P. Rose  F. Karadas  M. W. Mirza  A. Sharpe 《British poultry science》2018,59(1):76-80

1. A batch of wheat distillers dried grains with solubles (DDGS) was obtained immediately after production and was separated into 5 equal parts and placed in woven polypropylene sacks. The samples were stored under 5 different temperature conditions for 1 year as follows: kept at a constant ?20°C; kept at ?20°C for 24 h period and after that kept at a constant +4°C; kept at a constant +4°C only; kept at a constant +15°C; stored at ambient temperature (range of weekly mean temperatures was from +4 to +22°C).

2. Each of the 5 wheat DDGS samples was included (200 g/kg) in a nutritionally complete diet and fed to broiler chickens from 7 to 21 d of age. The chemical composition of the DDGS samples was determined at the beginning and at the end of the 1-year storage period.

3. The nitrogen corrected apparent metabolisable energy (AMEn) and the nutrient availability of each sample was measured using a total collection technique. The growth performance of birds was also determined.

4. The DDGS samples kept at a constant ?20°C had higher dry matter, lower oxidation value and lower antioxidant contents. The DDGS sample that was stored at ambient temperatures had a higher AMEn than the rest of the DDGS samples.

5. The results of this experiment have shown that there can be changes in the AMEn of wheat DDGS during storage at ambient temperatures. In general, there were no serious effects of storage of DDGS on its feeding value to broiler chickens.  相似文献   

Papaya extract upregulates the immune and antioxidants‐related genes,and proteins expression in milk somatic cells of Friesian dairy cows     

Tarek K. Abouzed  Kadry M. Sadek  Mousa M. Ayoub  Ebeed A. Saleh  Sherif M. Nasr  Yasser S. El‐Sayed  Moustafa Shoukry 《Journal of animal physiology and animal nutrition》2019,103(2):407-415

  相似文献   

The effects of dietary tomato powder (Solanum lycopersicum L.) supplementation on the haematological,immunological, serum biochemical and antioxidant parameters of growing rabbits     

Hamada A. M. Elwan  Shaaban Saad Elnesr  Mohamed Mohany  Salim S. Al-Rejaie 《Journal of animal physiology and animal nutrition》2019,103(2):534-546

Using nutritional antioxidants in livestock systems is considered the key in improving animal production. The current study assumes that dietary tomato powder (TP) supplementation positively affects haemato‐immunological, biochemical, and antioxidant parameters for New Zealand rabbits. A total of 30 rabbits (45 days old) were assigned to three groups, including a diet with no additives (control), and two dietary treatments with the providing of 1% or 2% TP. Mass spectrometric study for TP methanolic extract showed some phenolic compounds. Consumption of TP supplemented diets significantly (p < 0.001) affected body weight gain and feed efficiency. Red blood cells and white blood cells count exhibited a significant increase (p < 0.001) in both TP groups compared with the control. In addition to, feeding rabbits on TP enhanced cell‐mediated and humoral immune responses through a significant increase in phagocytosis, chemotaxis, and levels of immunoglobulins (TIg, IgG, IgM and IgA). Supplementation of TP significantly (p < 0.01) reduced lipid profile induces except high‐density lipoprotein cholesterol values. A remarkable significant (p < 0.001) effect on serum and hepatic oxidative stress responses were observed with TP addition. Ultimately, TP supplementation could play a potential role as a growth and health enhancer for fattening rabbits.  相似文献   

青蒿不同组织的营养特性和抗氧化能力     

Ebiamadon Andi Brisibe  ;孙亚楠译 《饲料与畜牧》2009,(9):37-41

对青蒿不同组织的营养成分和抗氧化潜力进行评价，结果表明：叶片和花序中的蛋白、粗脂肪和体外消化组分比例很高，但洗涤纤维比例最低。这些组织的矿物质组成元素中，锰铜的比例最高。组织中相对高的氨基酸和维生素纽分同样反映了一种可以增强抗氧化能力的理想的营养平衡。总的来说，青蒿营养物质组成比例和抗氧化活性较高，而所含抗营养因子比例极低可忽略不计，尤其叶片中的毒素含量很低。因青蒿富含养分和抗氧化剂，可作为一种潜在的人类草药补品或家畜生产中的常规饲料添加剂。  相似文献   

不同生长期藏药独一味酶促抗氧化功能的研究     

温健  张亚娟  陈垣  马伟明  郭凤霞 《甘肃农业大学学报》2009,44(2)

独一味[Lamiophlomis rotata(Benth.)Kudo]是一种常用藏药.通过测定其药用器官内源抗氧化酶类活性和脂质过氧化产物含量和速率,研究了不同采收期独一味各药用器官的酶促抗氧化功能.结果表明,独一味植株各药用器官中SOD酶活性均较高且稳定,平均达到150.87 U/g,H2O2清除酶类活性协同作用强,尤其POD活性强,平均达到236.76μmol/g,同时还具有高效AsA-GSH自由基清除循环体系,丙二醛(MDA)积累量很少,平均只有1.22μmol/g,因此认为独一味植株具有高效抗氧化功能和较优越的抗逆能力.  相似文献   

中国李组织培养过程中褐变的抑制研究   总被引：2，自引：0，他引：2  

邹英宁  李国怀  吴强盛 《山地农业生物学报》2007,26(6):508-512

研究了影响中国李(海湾红宝石)Prunus salicina Lindl.cv.Gulf ruby茎段培养褐变的因素,包括基本培养基组分、抗氧化剂、细胞分裂素等.结果表明,WPM作为基本培养基培养效果较好;维生素C1.0g·L-1有效抑制褐变(褐变率16.7%),且能明显促进增殖(增殖倍数3.00)和生长;KT0.5～1.0mg·L-1外植体生长良好,褐变减轻.适宜的培养方案为WPM IBA 0.1mg·L-1 6-BA/KT 0.5～1.0mg·L-1 Vc 1.0g·L-1,低温弱光下培养7d后转入光下继续培养.  相似文献   

Different Physiological Reactions at Vegetative and Generative Stage of Development of Field Bean Plants Exposed to Flooding and Undergoing Recovery     

E. Pociecha 《Journal of Agronomy and Crop Science》2013,199(3):195-199

Plants at various stages of growth are differentiated in their susceptibility to environmental stresses and possibility of regeneration during recovery period after cessation of stress. The role of antioxidative enzymes in the stabilisation of the physiological state of field bean plants was studied. Catalase, peroxidises activity, and hydrogen peroxide accumulation were determined after 1 and 7 days of flooding and after 1 and 7 days of recovery from flooding. The influence of flooding on plants growth was analysed on the basis of leaf area index (LAI), relative growth rate (RGR) and net assimilation rate (NAR). Changes in antioxidative enzymes caused by flooding applied at vegetative stage were reversible. In generative plants, antioxidative enzymes were activated to a greater extent during recovery period and in contrast to vegetative plants did not attain the control level after that period. The reduction in growth was greater when flooding stress was applied at vegetative stage. Vegetative plants regardless of the stabilisation of antioxidant system were not able to restore the physiological function to attain the optimal growth level after flooding. Probably other injuries caused by flooding had a dominant effect on enzymatic antioxidant changes during stress period.  相似文献   

Effect of dietary α‐tocopherol + ascorbic acid,selenium, and iron on oxidative stress in sub‐yearling Chinook salmon (Oncorhynchus tshawytscha Walbaum)     

T. L. Welker  J. L. Congleton 《Journal of animal physiology and animal nutrition》2009,93(1):15-25

A three‐variable central composite design coupled with surface‐response analysis was used to examine the effects of dietary α‐tocopherol + ascorbic acid (TOCAA), selenium (Se), and iron (Fe) on indices of oxidative stress in juvenile spring Chinook salmon. Each dietary factor was tested at five levels for a total of fifteen dietary combinations (diets). Oxidative damage in liver and kidney (lipid peroxidation, protein carbonyls) and erythrocytes (erythrocyte resistance to peroxidative lysis, ERPL) was determined after feeding experimental diets for 16 (early December) and 28 (early March) weeks. Only TOCAA influenced oxidative stress in this study, with most measures of oxidative damage decreasing (liver lipid peroxidation in December and March; ERPL in December; liver protein carbonyl in March) with increasing levels of TOCAA. We also observed a TOCAA‐stimulated increase in susceptibility of erythrocytes to peroxidative lysis in March at the highest levels of TOCAA. The data suggest that under most circumstances a progressive decrease in oxidative stress occurs as dietary TOCAA increases, but higher TOCAA concentrations can stimulate oxidative damage in some situations. Higher levels of TOCAA in the diet were required in March than in December to achieve comparable levels of protection against oxidative damage, which may have been due to physiological changes associated with the parr‐smolt transformation. Erythrocytes appeared to be more sensitive to variation in dietary levels of TOCAA than liver and kidney tissues. Using the March ERPL assay results as a baseline, a TOCAA level of approximately 350–600 mg/kg diet would provide adequate protection against lipid peroxidation under most circumstances in juvenile Chinook salmon.  相似文献   

The effect of vitamin C supplementation in healthy dogs on antioxidative capacity and immune parameters     

M. Hesta  C. Ottermans  S. Krammer‐Lukas  J. Zentek  P. Hellweg  J. Buyse  G. P. J. Janssens 《Journal of animal physiology and animal nutrition》2009,93(1):26-34

The aim of the study was to investigate the ability of vitamin C to increase the antioxidative and immunomodulating potential in healthy dogs. Fifteen dogs were tested for the effects of orally administered vitamin E (60 mg dl‐α tocopheryl acetate) in combination with vitamin C (0, 30 or 60 mg ascorbic acid crystalline). Three treatments (0, 30, 60 mg vitamin C) were tested in a 3 × 3 cross‐over study in three periods of 36 days. Pre‐prandial blood samples were taken for analysis of vitamins C, E, A, retinyl palmitate and stearate, antioxidant status [Thiobarbituric acid reactive substances (TBARS) and uric acid], biochemical and haematological analysis. Subpopulations of lymphocytes, mitogen‐induced peripheral blood mononuclear cell proliferation (PBMC) and serum IgA and IgG concentrations were determined. There was a trend (p = 0.056) for an increased plasma vitamin C concentration by vitamin C supplementation. There was no evidence that dietary treatment altered neither the other plasma vitamin concentrations nor TBARS and uric acid concentrations nor the subpopulations of the lymphocytes except for the number of CD4⁺ lymphocytes that increased with vitamin C supplementation. There was no effect of vitamin C on serum IgA and IgG concentration. A significant time × treatment interaction was demonstrated on PBMC’s to pokeweed, with an increase observed by 30 mg vitamin C supplementation but a decrease by 60 mg vitamin C supplementation. There was no clear evidence for an effect of dietary vitamin C on antioxidative capacity in healthy dogs fed a diet with vitamin E concentrations well above the recommendations. Yet, a limited number of immunological parameters were slightly affected.  相似文献