Time filter

Source Type

Prashant Chaudhary P.,Animal Biotechnology Center | Sirohi Kumar S.,Animal Biotechnology Center | Kumar S.,Animal Biotechnology Center
Asian Journal of Animal Sciences | Year: 2011

The present study has been planned to standardize a simple and effective method for the isolation of good quality as well as quantity of methanogenic DNA in total genomic DNA from rumen liquor of Bubalus bubalis. Methanogens are a diverse group of organisms found in anaerobic environments such as anaerobic sludge digester, wet wood of trees, sewage, rumen, black mud, black sea sediments, etc which utilize carbon dioxide and hydrogen and produce methane. Methanogens exhibit great diversity in cell envelopes, ranging from simple, non rigid surface layers consisting of protein or glycoprotein subunits to a rigid "pseudomurein" sacculus, analogous to eubacterial murein. Methanogens having different chemical composition of cell wall and known for tough cell wall which is difficult break to isolate good quality and quantity of genomic DNA. Various DNA extraction methodologies have been used but problems are most often encountered in terms of low DNA yields and quality of DNA for further application. Method of DNA isolation based on guanidine thiocynate lysis buffer was compared with commonly used phenol chloroform method and commercial kit based methods, results showed that modified protocol generated high molecular weight genomic DNA while the other two methods resulted in considerable DNA degradation. Further, the isolated genomic DNA was tested for downstream applications such as PCR and Real-Time PCR using methanogens specific primers. In both the cases, the genomic DNA isolated by our protocol was comparatively better than rest of two protocols tested. © 2011 Knowledgia Review, Malaysia.


Wu Y.F.,Animal Biotechnology Center
Bing du xue bao = Chinese journal of virology / [bian ji, Bing du xue bao bian ji wei yuan hui] | Year: 2013

To study the proliferation characteristics of PPV in differently infected way and the variance of concentrations in different cells. A strain of porcine parvovirus(PPV) was adapted to PK-15 cells, and a Real-time fluorescent quantitative PCR (FQ-PCR) assay was developed based on the specific region of the NS1 gene of PPV to quantify the PPV. The FQ-PCR was used to measure the viral concentration of virus-infected cells by simultaneous or step by step inoculation and plot one-step growth curves. The proliferation characteristics of PPV strain in different cells lines (HeLa, MDBK, PK-15 ,ST, F81, BHK-21 and Marc-145) was also compared. The results showed the PK-15 cell -adapted strain of PPV produced CPE after 12 passages, and maintained stable CPE at the following 10 messages. The one-step growth curve showed that the virus concentration of simultaneous inoculation was higher than that of the step-by-step inoculation, and the proliferation cycle of step-by-step inoculation was shorter. The proliferation ability of PPV strain in different cells showed that CPE appeared first inPK-15, followed by ST, HeLa and MDBK, and the virus concentration was highest in ST, followed byPK-15, MDBK and HeLa. NO proliferation was observed in F81, BHK-21 and Marc-145 cells. These findings lay a material foundation for the basic researches on PPV and the development of vaccine.


Ranjan R.,Animal Biotechnology Center | Bhong C.D.,Animal Biotechnology Center | Parmar S.,Animal Biotechnology Center | Joshi C.G.,Animal Biotechnology Center
Indian Journal of Animal Research | Year: 2015

The Nramp1 (Natural resistances macrophage protein1) gene or recently renamed Slc11a1 (solute carrier family 11 member1) is a member of a large family of genes coding for metal ion-transporting proteins. Nramp1 gene plays a critical role in innate immunity favoring bacterial killing by macrophages in addition to its influence on adaptative immunity. The aim of the present investigation was to identify the genetic variations in the 3’UTR (Untranslated region) of Nramp1 gene in the Gaolao breed (Bos indicus) cattle, using the technique PCR-SSCP and by sequencing. PCR-SSCP (Single Strand conformational polymorphism) of 440 bp amplicon of Nramp1 gene revealed four common SSCP patterns in Gaolao breed. The chi-square test revealed that difference between observed frequencies of different patterns in Gaolao was non-significant at 5% level of significance. The sequence analysis of Nramp1 region did not revealed sequence variation. The sequence analysis of Nramp1 region bare only two sequence variation in four SSCP patterns. This indicates that this region is either heterologous or SSCP could be independent of sequence variation. © 2014, Indian Journal of Animal Research. All Rights Reserved.


Gupta R.,Lovely Professional University | Pramanik T.,Lovely Professional University | Gupta R.,Animal Biotechnology Center
Der Pharma Chemica | Year: 2016

Biologically active La (III), Sm (III), Gd (III) and Dy (III) complexes were synthesized by using Furan-2-carboxylic acid (FCA) as ligand and were characterized by elemental analysis and spectral measurements. Coordination of the ligand atoms to the metal ion was deducted by IR spectral data. The in vitro antibacterial screening of the free acid and its metal complexes has been carried out against Pseudomonas and bacillus. Antifungal activities of all the synthesized compounds were screened for in vitro growth inhibitory activity against Aspergillus flavus and Aspergillus niger, Aspergillus fumigatus by using the cup plate method. Antimicrobial activities of the ligand increase on coordination with the metal ion and show more promising activity than the corresponding free acid, and the standard control antibiotics. Such increased activity of the metal chelates can be explained on the basis of Overtone's concept and chelation theory.


De S.,Animal Biotechnology Center | Mir N.A.,Dairy Cattle Physiology
International Journal of Dairy Technology | Year: 2014

Nowadays, studies about the anti-obesity potential of probiotics are of growing interest. Lactobacilli are one of the well-studied probiotics owing to their preventing effect on metabolic disorders. This study was undertaken to access the anti-obesity effect of probiotic dahi containing Lactobacillus casei NCDC 19 on C57BL/6 mice. Feeding of probiotic dahi showed reduce body weight gain and epididymal fat weights. Moreover, blood glucose, plasma lipids and expression level of leptin were reduced and caecal bifidobacteria counts and adiponectin expression levels were significantly increased. It can be concluded that feeding of probiotic dahi containing L. casei NCDC 19 showed potential anti-obesity effects. © 2014 Society of Dairy Technology.


Kumar D.,Veterinary Science University of Madhya Pradesh | Kumar D.,Animal Biotechnology Center | Jain S.K.,Veterinary Science University of Madhya Pradesh | Sarkhel B.C.,Veterinary Science University of Madhya Pradesh | Sarkhel B.C.,Animal Biotechnology Center
Indian Journal of Animal Sciences | Year: 2016

The present study assessed the fertilization potential of sperm obtained from refrigerated epididymis and fresh ejaculation of buck under 2 culture media, viz. modified synthetic oviductal fluid (mSOF) and research vitro cleave-blastocyst (RVCL-BLAST) media. In the process, the cauda epididymis of slaughtered buck were immediately collected, pre-processed and refrigerated (4°C) for 24 h. The oocytes recovered from slaughter house ovaries were in vitro matured and fertilized with both semen sources. On analysis of embryonic development, ejaculated group showed significantly higher blastocyst rate than epididymal sperm, however, initial cleavage rates of epididymal group was significantly higher than ejaculated semen, irrespective of culture media. Among the culture media, RVCL-BLAST media was significantly efficient than mSOF in terms of cleavage and blastocysts, irrespective of gametes sources. Despite of lower outcome of blastocyst, cold stored epididymal sperm may be considered as an alternative, potent and viable source of gametes for assisted reproduction in case of endangered or other livestock, if immediate facilities for sperm processing are not available. © 2016, Indian Council of Agricultural Research. All rights reserved.


Shanmugam M.,Project Directorate on Poultry | Shanmugam M.,National Dairy Research Institute | Pandita S.,DCP Division | Pandita S.,National Dairy Research Institute | And 2 more authors.
Indian Journal of Animal Sciences | Year: 2013

This study examined the effects of S-nitroso-N-acetyl-penicillamine (SNAP), a nitric oxide (NO) donor and Nw-nitro-L-arginine methyl ester hydrochloride (L-NAME), a nitric oxide synthase inhibitor on estradiol-17β and progesterone production by buffalo granulosa cells. Granulosa cells (3×105) from small (≤5 mm diameter) or large (≥ 9 mm diameter) follicles were cultured for 24 h under completely serum-free conditions in DMEM: nutrient mixture F-12 Ham (1:1 ratio) supplemented with 10-7 M androstenedione, 5 mg/ml human apo-transferrin, 0.1% BSA, in the presence or absence of FSH (8 ng/ml). Granulosa cells from large follicles produced higher estradiol-17β and progesterone than those from small follicles. SNAP reduced estradiol-17β and progesterone production at concentrations of 0.1 and 1 mM when used alone and in the presence of FSH by granulosa cells from follicles of both size categories. L-NAME (0.2, 1 and 5 mM) had, however, no effect on estradiol-17β or progesterone production, alone or in the presence of FSH. Our results demonstrated strong inhibitory effects of NO on estradiol-17β and progesterone production by buffalo granulosa cells from small and large follicles and indicated that it may be an autocrine/paracrine regulator of steroidogenesis by granulosa cells in buffalo.


Yadav A.,Animal Biotechnology Center | Singh K.,Animal Biotechnology Center | Singh M.,Animal Biotechnology Center | Saini N.,Animal Biotechnology Center | And 5 more authors.
Reproduction in Domestic Animals | Year: 2013

Contents: For investigating the effects of physiologically relevant heat shock, buffalo oocytes/embryos were cultured at 38.5°C (control) or were exposed to 39.5°C (Group II) or 40.5°C (Group III) for 2 h once every day throughout in vitro maturation (IVM), fertilization (IVF) and culture (IVC). Percentage of oocytes that developed to 8-cell, 16-cell or blastocyst stage was lower (p < 0.05) and the number of apoptotic nuclei was higher (p < 0.05) for Group III > Group II > controls. At both 8-16-cell and blastocyst stages, relative mRNA abundance of stress-related genes HSP 70.1 and HSP 70.2 and pro-apoptotic genes CASPASE-3, BID and BAX was higher (p < 0.05) in Groups III and II than that in controls with the exception of stress-related gene HSF1. Expression level of anti-apoptotic genes BCL-XL and MCL-1 was also higher (p < 0.05) in Groups III and II than that in controls at both 8-16-cell and blastocyst stages. Among the genes related to embryonic development, at 8-16-cell stage, the expression level of GDF9 was higher (p < 0.05) in Group III than that in controls, whereas that of GLUT1, ZAR1 and BMP15 was not significantly different among the three groups. At the blastocyst stage, relative mRNA abundance of GLUT1 and GDF9 was higher (p < 0.05) in Group II than that in controls, whereas that of ZAR-1 and BMP15 was not affected. The results of this study demonstrate that exposure of buffalo oocytes and embryos to elevated temperatures for duration of time that is physiologically relevant severely compromises their developmental competence, increases apoptosis and affects stress-, apoptosis- and development-related genes. © 2013 Blackwell Verlag GmbH.


PubMed | Animal Biotechnology Center
Type: Journal Article | Journal: Acta veterinaria Hungarica | Year: 2012

In order to detect infectious bursal disease virus (IBDV), bursal tissue was collected from 10 IBD-suspected birds from a 30-day-old, IBDV-vaccinated commercial broiler chicken flock of 2000 birds exhibiting clinical signs suggestive of infectious bursal disease (IBD). The presence of IBDV was confirmed by partial amplification of the VP2 gene by reverse transcription and polymerase chain reaction. Isolates were identified as very virulent strains of IBDV (vvIBDV) by nucleotide sequence analysis. The comparison of the VP2 nucleotide sequences among the isolates revealed the presence of single-nucleotide polymorphisms in the VP2 gene of IBDV in the same flock. The comparative analysis indicated that these viruses were genetically close to the vvIBDVs previously detected in India. Our analysis provided information about the existence of vvIBDV in Central India.


PubMed | National Dairy Research Institute and Animal Biotechnology Center
Type: Journal Article | Journal: Cytokine | Year: 2015

The aim of our study was to optimize growth and induction parameters, for expression and large scale purification of functionally active buffalo interferon tau, and to study its possible impact on in vitro blastocyst development. The buffalo interferon-tau gene (BuIFN-T1) bearing gene bank accession No. JX481984, with signal sequence, was obtained through polymerase chain reaction (PCR) from bovine early embryos and was cloned into pJET vector. After being verified, the fragments without signal sequence, were inserted into the expression vector pET-22b and the recombinant plasmid was induced to express the recombinant protein in a prokaryotic expression system. The recombinant BuIFN-T was confirmed by SDS-PAGE and Western blot and subjected to three steps of large scale purification using His Affinity chromatography, Anion Exchange chromatography and Gel Filtration chromatography. The purified recombinant BuIFN-T protein was validated by mass spectroscopy analysis. To examine the effect of recombinant BuIFN-T protein on developmental competency of buffalo embryos, purified recombinant BuIFN-T protein was added to in vitro embryo culture medium (at concentration of 0, 1g/ml, 2g/ml, 4g/ml) for 9days. Addition of recombinant BuIFN-T (2g/ml) significantly improved the rate of blastocyst production, 45.55% against 31.1% control (p<0.01). Here we conclude that the recombinant BuIFN-T was successfully purified to homogeneity from a prokaryotic expression system and it significantly increased the blastocyst production rate in buffalo. These findings suggest a potential impact of IFN-T in promoting embryonic growth and development.

Loading Animal Biotechnology Center collaborators
Loading Animal Biotechnology Center collaborators