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In the present study, eight different strains of Geotrichum candidum were isolated and screened for an extracellular exo-inulinase production using chemically enriched sucrose-mineral media. The isolate (Zool-3i) with a better enzyme activity (1.38 IU/ml) was subjected to induced mutagenesis using methyl methane sulphonate (MMS) and a mutant with an enzyme(More)
The objective of the present study was to determine the relationship of age to body weight (BW), scrotal circumference (SC), number of pixels of testicular ultrasonograms (NP), and semen quality in Sahiwal bulls. The study was based on 128 Sahiwal bulls of different age groups (from 0 to >100 months of age). Bulls were evaluated for SC, BW, and NP. Semen(More)
Indoleamine 2,3-dioxygenase (IDO) is an immuno-regulatory enzyme. It plays a key role in various malignancies, infection and autoimmune diseases. IDO induces immunosup-pression through the depletion of tryptophan and its downstream metabolites. Hepatitis C virus (HCV) has infected more than 12 million individuals in Pakistan. The aim of the present study(More)
Lower fertility in buffaloes with frozen-thawed semen is attributed to sperm damage that is believed to be due to formation of ice crystals during freeze/thaw process. It was hypothesized that antifreeze proteins in the extender may improve the post thaw quality of buffalo bull sperm. For this purpose, two separate experiments were conducted to evaluate(More)
Incipient condition plays a significant role in the field of sediment transport and channel stability and different parameters based upon it are used in the sediment initiation and transport formulas both for the development and application purposes. Its determination depends upon the subjective judgment of the investigator. Effects of this judgment on(More)
The present study was conducted to compare the liposome-containing, animal protein-free, commercially available OPTIXcell extender with the Tris-citric-egg yolk extender for postthaw quality and fertility of buffalo semen. Semen was collected from five adult Nili-Ravi buffalo (Bubalus bubalis) bulls of similar age group with an artificial vagina (at 42 °C)(More)
The enzyme beta-D-fructofuranosidase fructohydrolase (FFH) cleaves the alpha-1,4 glycosidic linkage between alpha-D-glucose and beta-D: -fructose molecules of sucrose, releasing monosaccharides by hydrolysis. In the present study, FFH production in Candida utilis GC-46, a lipolytic wild yeast strain was improved by exposure to N-methyl N-nitro N-nitroso(More)
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