排序方式： 共有4条查询结果，搜索用时 78 毫秒
1
1.
Anil K Puniya Abdelfattah Z M Salem Sanjay Kumar Sumit S Dagar Gareth W Griffith Monica Puniya Sreenivas R Ravella Nikhil Kumar Tejpal Dhewa Ravinder Kumar 《农业科学学报》2015,14(3):550-560
To keep the concept of a safe food supply to the consumers, animal feed industries world over are showing an increasing interest in the direct-fed microbials(DFM) for improved animal performance in terms of growth or productivity. This becomes all the more essential in a situation, where a number of the residues of antibiotics and/or other growth stimulants reach in milk and meat with a number of associated potential risks for the consumers. Hence, in the absence of growth stimulants, a positive manipulation of the rumen microbial ecosystem to enhance the feedstuff utilization for improved production efficiency by ruminants has become of much interest to the researchers and entrepreneurs. A few genera of live microbes(i.e., bacteria, fungi and yeasts in different types of formulations from paste to powder) are infrequently used as DFM for the domestic ruminants. These DFM products are live microbial feed supplements containing naturally occurring microbes in the rumen. Among different DFM possibilities, anaerobic rumen fungi(ARF) based additives have been found to improve ruminant productivity consistently during feeding trials. Administration of ARF during the few trials conducted, led to the increased weight gain, milk production, and total tract digestibility of feed components in ruminants. Anaerobic fungi in the rumen display very strong cell-wall degrading cellulolytic and xylanolytic activities through rhizoid development, resulting in the physical disruption of feed structure paving the way for bacterial action. Significant improvements in the fiber digestibility were found to coincide with increases in ARF in the rumen indicating their role. Most of the researches based on DFM have indicated a positive response in nutrient digestion and methane reducing potential during in vivo and/or in vitro supplementation of ARF as DFM. Therefore, DFM especially ARF will gain popularity but it is necessary that all the strains are thoroughly studied for their beneficial properties to have a confirmed ‘generally regarded as safe' status for ruminants. 相似文献
2.
Effect of brewer’s yeast on immune response of giant freshwater prawn, Macrobrachium rosenbergii, and its resistance to white muscle disease 总被引：1，自引：0，他引：1
Prakash V. Parmar H. Shivanada Murthy C. S. Tejpal B. T. Naveen Kumar 《Aquaculture International》2012,20(5):951-964
The present study was conducted to find the effect of dietary brewer’s yeast on growth, survival, immune response, and resistance to white muscle disease in giant freshwater prawn, Macrobrachium rosenbergii. The brewer’s yeast was supplemented at graded levels 0, 5, 10, and 20?g per kg diet, and the experiment was conducted for 75?days. After the feeding trials, growth, survival, immune parameters like prophenoloxidase activity, respiratory burst, and total hemocyte count were assessed. The growth, specific growth rate, and survival were not found significantly different among the treatment and control groups “prophenoloxidase activity and respiratory burst” were found significantly different (p?<?0.05) among the treatment and control groups. The total hemocyte count was significantly different (p?<?0.05) among control and treatment groups. Cumulative percent survival was higher in M rosenbergii fed 1?% brewer’s yeast-supplemented diet when they were challenged with white muscle disease virus (MrNV (Macrobrachium rosenbergii nodavirus) and XSV (extra small virus)). The present work revealed that the incorporation of brewer’s yeast in the diet is effective in enhancing immune response and controlling the white muscle disease in M rosenbergii. 相似文献
3.
Anil K Puniya Abdelfattah Z M Salem Sanjay Kumar Sumit S Dagar Gareth W Grififth Monica Puniya Sreenivas R Ravella Nikhil Kumar Tejpal Dhewa Ravinder Kumar 《中国农业科学(英文版)》2015,(3)
To keep the concept of a safe food supply to the consumers, animal feed industries world over are showing an increasing interest in the direct-fed microbials (DFM) for improved animal performance in te... 相似文献
4.
R. Shankar H. Shivananda Murthy H. R. Sujatha E. G. Jayaraj C. S. Tejpal V. S. Chinthamani 《Aquaculture International》2012,20(1):1-12
A 60-day feeding trial was conducted to evaluate the effect of dietary nucleotide on growth, survival, immunity and resistance
to white muscle disease and Aeromonas hydrophila infection in freshwater prawn (Macrobrachium rosenbergii). The nucleotide was supplemented at 0, 1.5, 2.25 and 3.0 g/kg diet. The test diets were fed for 60 days in triplicate groups
of prawns, which had initial weight of 0.27 g. At the end of the feeding trial, growth was recorded and non-specific immune
parameters, such as, prophenol oxidase activity, superoxide anion production, total haemocyte count and total serum protein,
were studied in haemolymph samples. Phenol oxidase activity and superoxide anion production were significantly (P < 0.05) higher in prawns fed nucleotide-based diets. Total haemocyte count and haemolymph were higher (P < 0.05) in prawns fed nucleotide-based diets. The relative per cent survival of prawn after the challenge test against white
muscle disease was significantly (P < 0.05) higher in prawn fed nucleotide-incorporated diets. However, there was no effect of nucleotide supplementation on
growth and survival of prawn. 相似文献
1