482 research outputs found
Ex vivo renal perfusion and autotransplantation in treatment of calculous disease or abdominal aortic aneurysm.
Two more indications are described for temporary ex vivo perfusion of kidneys with revascularization of these organs as autografts to orthotopic or heterotopic locations. One of the patients had staghorn calculi which were removed from a solitary kidney. The other patient had both kidneys autografted in the course of a surgical procedure on an extensive abdominal aortic aneurysm
Training Manual On Live feed for Marine finfish and shellfish culture
Fish food organisms are microscopic organisms naturally present in the aquatic
environment as primary food for the larvae of finfish and shellfish. Their size ranges
from a micron to few millimetres. They are tiny forms which suits the mouth size of all
kinds of finfish and shellfish larvae. Fish food organisms are essential for the
developmental stages of many aquatic organisms. They are very important in the critical
phases of finfishes and shellfishes for their better survival and growth. They are rich in
proteins, carbohydrates and essential fatty acids. The major expansion of finfish and
shellfish aquaculture around the world is attributed to the development of standard mass
production techniques of live feed. Though this field of fish food organisms forms a
small part of the aquatic systems but due to increasing commercial interest in the
hatchery development of aquatic finfish and shellfish for human needs lead to increasing
urgent need for more development of live feed for providing feed for larval stages of fish.
The availability of good quality and quantity of live foods contribute to successful
operation of aqua-hatchery both for intensive and small scale operations. Visakhapatnam
Regional Centre of Central Marine Fisheries Research Institute, under the administrative
fold of Indian Council of Agricultural Research, possesses a rich tradition of expertise in
live feed culture with pure stock cultures available of all commercially important species.
The result of which, all hatcheries operating in the states of Andhra Pradesh, Odisha and
West Bengal and the neighbouring country of Bangladesh depend totally on
Visakhapatnam Regional Centre for meeting their live feed culture requirements.
Keeping in view, the increasing demand of live feed culture, contributed by the
increasing number of hatcheries; it was felt pertinent to have a hands-on training
programme on the recent techniques in vogue on the various culture methodologies of all
live feeds, so as to enlighten the researchers and hatchery operators on the nuances and
intricacies of live feed culture
Assessing the role of protists in removing E coli in slow sand filters
The organic layer that forms on top of the sand bed in slow sand filters, known as the schmutzdecke, is vital for bacterial removal. The schmutzdecke consists of abundant bacteria and protists, and is where suspended particles can be strained, organic matter compounds broken down, and microorganisms are entrapped.
Some varieties of protists prey upon bacteria. Their role in bacterial removal is not well quantified. The goal of this study was to confirm the relationship between filter run time and protistan abundance, to determine the significance of protistan predation on E. coli, and whether protists can be seeded onto filters to improve SSF startup times.
Results from a series of bench- and full-scale experiments confirmed a relationship between increased ripening time and increased biomass, protistan abundance, and E. coli removals. The seeding studies showed increased protistan populations in some filters, and a strong correlation between protistan abundance and CO2 respiration
AN EXAMINATION OF SOME ASPECTS OF GROWTH AND NUTRITION OF JUVENILE GREY MULLET (MUGILIDAE) IN RELATION TO POTENTIAL MULLET FARMING IN BRITAIN
The growth of juvenile (0 - III group) C. labrosus,
L. aurata and L. ramada was examined in the Tamar, Lynher and
Yealm estuaries in south-west England. Two growth models were
used to facilitate comparisons among species, age groups and
sites of capture. The growth of C. labrosus and L. ramada was
similar and faster than that of L. aurata. The growth and
relative condition of 0 group fish tended to be greater in
St. John's Lake than at other sites, but amongst older fish
the reverse appeared to be true. Annual and daily cycles in
feeding intensity were examined. A high daily food intake
and fast passage of food through the gut appeared to be
characteristic of both C. labrosus and L. aurata. In the
spring 100% of fish examined were infected w1th cysts of
Myxbolus exiguus but this did not appear to have any significant
effect on growth or condition.
Three 12-15 week feeding experiments were undertaken
to examine aspects of the nutrition of I group C. labrosus
using experimental diets of semi-purified rations. In the
first and second experiments the effect of dietary protein level
and ration size on growth was investigated. There was a significant
interaction between these factors with optimum dietary
protein level decreasing with increase in ration size, and
optimum ration decreasing with increase in dietary protein
level. In the third experiment the ability of juvenile mullet
to utilise dietary energy supplied as either lipid + carbohydrate
or mainly carbohydrate in diets containing 20% and 40%
protein was examined. Increase in dietary energy resulted in
improved growth, but lipid energy had a greater protein sparing
effect than carbohydrate energy. The effects of dietary protein
and energy level, energy source and ration size on conversion
efficiency, assimilation of the diet, histology and size of
certain organs, and body composition were also investigated
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