Basrah Journal of Veterinary Research

Several cysteine and methionine auxotrophic mutants were isolated from Sinorhisobium meliloti strain Rmd201 by transposon Tn5 mutagenesis. Tns is inserted in metAl mett, metk, metf and cyst/cys./ genes. The study showed that the biosynthesis pathway of sulfur containing amino acids is resembied that one present in Saccharomyees cerevicia and Pseudomonas aeruginosa in some respects and the pathway that present in Escherichia coli in others.

Difierent co1icc1)tratio1) ol'rit;1(npin and Ciprotlox'tcin ~vere tested I'or their
activities

Balb/c mice were used for investigating, the ability of the fungus (..'lada.s'porr‘zun sp.
To infect the animal organs. Livers and kidneys of the animals were fixed and
liistopathologieally examined after injecting the animal with ftlllgal spores. The study
showed that the fungus (.'lado.s-porfzmz sp. is able to infect the animal organs . Fungal
mycclia was observed among tisstie cells in addition to many histological changes such as
cell (lcgcneration, necrosis. ecmgestion and bleeding

12 local breed cows, their age between 6-7 years old suffering from right alamnasal
displacernem depending on their case history and general cxantinzrtion, treated surgically with
two different surgical procedures (Right Flank Omentopexy and Right Flank abomasopcxy).

Liza aim fish were exposed to different concentrations of the Diazinon pesticide
(Organophosphate pestieide)'(diethyl 2—isopropyI -6- methyl -4- pyriinidiny'l phosphoro
~thionate) in the acute exposure (96) hour and chronic exposure (I4) days ,
l'llSlDptlI.l]0l0glCE1l examination showed the hyperplasia of tl1c gill tissue, some
engorgement with blood of the secondary larnellae, epithelial separation . necrosis .
clubbing of epithelial cells and fusion of adjacent secondary lamcllae. These changes
different according to the pesticide concentration and it's exposure time

The chemotherapeutic effects of anti-eestodes drug praziquantel on giardiasis in
laboratory mice. Fourty mice were divided into 4 groups of 10 mice each. Group 1 was
infected; group2 was infected and treated orally by giving praziquantel at a dose of 10
mg/kg body weight as a single dose; group 3 was infected and treated orally by giving
metronidazole at a rate of 15-20 mg/kg body weight daily for 7' days; group 4 was
uninfected. Cyst excretion rate was recorded for the infected groups of mice.
The infected and praziquantel treated mice have recovered much more faster than
infected mice and treated by metronidazole. There were no side effects reported.
Praziquantel proved for the first time to be an ideal drug for the treatment of giardiasis

The present study investigated the toxicologic histopathologie effect ofallatoxin Hi,
60 broiler chicks ol’ one-day aged devided randomly and equally into three groups. for
dietary study, using one group as untreated control, while the other groups were given
aflatoxin B. mixed with diet in concentration of 0.5 and 1.5 ppm respectively, for 30 days,
the study showed fatty degeneration of liver associated with bile duct prolilicration,
accompanied by infiltration of monenuclcar cells and lymphocytes. Also there was
degeneration in proximal convoluted tubules mostly as hyaline degeneration especially at
0.5 ppm dose level. Those at 1.5 ppm dose level, there was focal liver cell necrosis
associated with fibrosis and enlarged proliferated bile ducts. sever vacuolation and necrosis
of epithelial of renal proximal convoluted tubules with thickening of the glomerular
basement membrane

Water and acetone extracts of the leave of Law.s'om'a inermfs L., the peels of I’um'ca
grrmamm L. and calcium carbonate (I%). alone or in combination were used against the
fungus Aspergiflusfimiigams radial growth, sporulation and spore germination. The
combination of acetone extracts ol‘ 1.. incrnu'.s' and P. gramrmm, and that ol‘ CaCO3
alone, were found to be the most effective against /t._/i.rmigam.s'. The acetone extract of
L. incrmris‘ was very effective inhibitor of radial growth of the fungus when used alone
or in combination with other treatments. The water extract of L. :'nermi.s‘ and P.
granamm increased sporulation and spore germination olithe fungus. It was concluded
that the acetone extracts of 1;. inernris and I’. grrimmrm alone or in combination with
CaC()3 were considered to have a good in vitro antifungai activity agains

Evaluation of the effect of common antibiotics used in the farm production , on the
immune system of chickens during the 21 days of life were investigated. A total of 60,
one-dayold chicks were divided into Four equal groups and was raised for 30 days.
Three groups were treated with Ampieillin, Enrofloxacin & Amoxyeillin respectively
whereas the4"‘group was served as control. Antibiotic treatment was similar to regimen
used in commercial chicken production. which included utilization of antibiotic at
1“ day of life and after vaccination. Body weight, bursa of fabrieius weight and bursa of
fabrieius to body weight ratio were calculated in order to monitor the growth rate of
bursa during the 2] days of life. All birds were vaccinated against ND at 7&2ldays of
age. Blood samples were collected at l4&?.9 days of age. Blood total protein, albumin
and globulin were determined. Antibiotic treatment often resulted in significant
decrease