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Search Results: 1 - 10 of 374592 matches for " P.C. Goswami "
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Relative Merits of Homo and Heterospermic Bull Semen in Respect of Fertility
S.A. Azmal,M.R. Amin,P.C. Goswami,M.P. Mostari
Pakistan Journal of Biological Sciences , 2004,
Abstract: The experiment was conducted to compare the relative efficiency of homo and heterospermic insemination in respect of fertility judged by conception and calving rate. Spermatozoa from three different breeds of bull namely Holstein Friesian (HF), Red Chittagong (RC) and Sahiwal (SL) were mixed in equal number and preserved for 3 days and inseminated at different days. In this study 168 cows were inseminated and 42 of them were inseminated with heterospermic semen containing equal numbers of spermatozoa from a HF, a RC and a SL bull. After calving the paternity of calves was established by comparing coat colour and conformation. Difference between homo and heterospermic insemination on conception and calving rate was not significant (p>0.05). The heterospermic conception and calving rates were 80.95 ± 0.07 and 64.29 ± 0.08%, with the homospermic rates being 66.67 ± 0.04 and 50.79 ± 0.04%, respectively. The conception and calving rate from heterospermic insemination was found insignificantly (p>0.05) different from that of homospermic insemination separately at first, second and third day of preservation. Conception rates of homo and heterospermic insemination at first day were 76.19 ± 0.07 and 85.71 ± 0.12%, respectively. The corresponding values at third day were 59.52 ± 0.07 and 78.57 ± 13%. Calving rate of homo and heterospermic insemination at first day were 57.14?0.08 and 64.29 ± 0.13%, respectively. The corresponding values at third day were 45.24 ± 0.08 and 64.29 ± 0.13%. The numbers of offspring (12:8:7) sired by the three bulls (HF: RC:SL) after using heterospermic semen did not differ significantly from an assumed 1:1:1 ratio (χ2 = 1.55: p>0.05). The sex ratios among calves from heterospermic insemination (15♂: 12♀) also did not differ significantly (χ2 = 0.34: p>0.05) from 1:1. From the above results, it was concluded that heterospermic insemination did not however, show any significant superiority in conception and calving rate in cows compared to homospermic insemination. However, heterospermic insemination offers no apparent risk to co-operating farmers, since overall conception and calving rate were either numerically higher or at least equal to that obtainable from homospermic insemination.
Collection and Grading of Bovine Cumulus-oocyte-complexes (COCs) from Slaughter House Ovaries in View of in vitro Maturation, Fertilization and Culture
P.C. Goswami,S.Z. Ali,M.A.M.Y. Khandoker,S.A. Azmal
Pakistan Journal of Biological Sciences , 2004,
Abstract: The research was carried out at the Animal Breeding and Genetics Laboratory under the Department of Animal Breeding and Genetics, Bangladesh Agricultural University, Mymensingh, Bangladesh. It was conducted with a view to establish some relationship between ovarian condition in terms of the presence or absence of corpus luteum and morphological quality of the COCs as well as the relationship between follicular diameter and quality of COCs. Significantly highest (p<0.01) number of follicles was found in type III ovaries. The number of follicles measuring 2-6 mm diameter was observed to be significantly higher (p<0.01) in type III than type II and type I ovaries. Moreover, grade A and grade B COCs were significantly highest (p<0.01) in number in 2-6 mm diameter follicles. It was established that cumulus cells surrounding the oocytes favour to a less or greater extent the IVM (In vitro maturation), IVF (In vitro fertilization) of oocytes and subsequent IVC (In vitro culture) of zygotes. On the basis of the study, it is concluded that type III ovaries having no corpus luteum may be suggested for obtaining good quality Cumulus-oocyte-complexes (COCs) in experiment for IVM, IVF and subsequent IVC.
Long-chain n-3 fatty acids and inflammation: potential application in surgical and trauma patients
Calder, P.C.;
Brazilian Journal of Medical and Biological Research , 2003, DOI: 10.1590/S0100-879X2003000400004
Abstract: lipids used in nutritional support of surgical or critically ill patients have been based on soybean oil, which is rich in the n-6 fatty acid linoleic acid (18:2n-6). linoleic acid is the precursor of arachidonic acid (20:4n-6). in turn, arachidonic acid in cell membrane phospholipids is the substrate for the synthesis of a range of biologically active compounds (eicosanoids) including prostaglandins, thromboxanes, and leukotrienes. these compounds can act as mediators in their own right and can also act as regulators of other processes, such as platelet aggregation, blood clotting, smooth muscle contraction, leukocyte chemotaxis, inflammatory cytokine production, and immune function. there is a view that an excess of n-6 fatty acids should be avoided since this could contribute to a state where physiological processes become dysregulated. one alternative is the use of fish oil. the rationale of this latter approach is that fish oil contains long chain n-3 fatty acids, such as eicosapentaenoic acid. when fish oil is provided, eicosapentaenoic acid is incorporated into cell membrane phospholipids, partly at the expense of arachidonic acid. thus, there is less arachidonic acid available for eicosanoid synthesis. hence, fish oil decreases production of prostaglandins like pge2 and of leukotrienes like ltb4. thus, n-3 fatty acids can potentially reduce platelet aggregation, blood clotting, smooth muscle contraction, and leukocyte chemotaxis, and can modulate inflammatory cytokine production and immune function. these effects have been demonstrated in cell culture, animal feeding and healthy volunteer studies. fish oil decreases the host metabolic response and improves survival to endotoxin in laboratory animals. recently clinical studies performed in various patient groups have indicated benefit from this approach.
Immunoregulatory and anti-inflammatory effects of n-3 polyunsaturated fatty acids
Calder, P.C.;
Brazilian Journal of Medical and Biological Research , 1998, DOI: 10.1590/S0100-879X1998000400002
Abstract: 1. fish oils are rich in the long-chain n-3 polyunsaturated fatty acids (pufas), eicosapentaenoic (20:5n-3) and docosahexaenoic (22:6n-3) acids. linseed oil and green plant tissues are rich in the precursor fatty acid, a-linolenic acid (18:3n-3). most vegetable oils are rich in the n-6 pufa linoleic acid (18:2n-6), the precursor of arachidonic acid (20:4n-6). 2. arachidonic acid-derived eicosanoids such as prostaglandin e2 are pro-inflammatory and regulate the functions of cells of the immune system. consumption of fish oils leads to replacement of arachidonic acid in cell membranes by eicosapentaenoic acid. this changes the amount and alters the balance of eicosanoids produced. 3. consumption of fish oils diminishes lymphocyte proliferation, t-cell-mediated cytotoxicity, natural killer cell activity, macrophage-mediated cytotoxicity, monocyte and neutrophil chemotaxis, major histocompatibility class ii expression and antigen presentation, production of pro-inflammatory cytokines (interleukins 1 and 6, tumour necrosis factor) and adhesion molecule expression. 4. feeding laboratory animals fish oil reduces acute and chronic inflammatory responses, improves survival to endotoxin and in models of autoimmunity and prolongs the survival of grafted organs. 5. feeding fish oil reduces cell-mediated immune responses. 6. fish oil supplementation may be clinically useful in acute and chronic inflammatory conditions and following transplantation. 7. n-3 pufas may exert their effects by modulating signal transduction and/or gene expression within inflammatory and immune cells.
Manejo de rebrotes de Digitaria insularis no plantio direto de milho
Timossi, P.C.;
Planta Daninha , 2009, DOI: 10.1590/S0100-83582009000100022
Abstract: total weed control is not always possible under no-till desiccation leading to perennial and increased number of weeds. in no-till cultivation areas with predominant occurrence of digitaria insularis sprouts, nicosulfuron alone (60 g ha-1) and in tank mix with atrazine (40 + 1.500 g ha-1), foramsulfuron + iodosulfuron-methyl (45 + 3 g ha-1) and mesotrione in tank mix with atrazine (144 + 1.500 g ha-1) were tested in a randomized block design, with four replications. each plot was 6 x 4 m, containing six corn culture rows. the herbicides were applied with a back spray at a constant pressure of 30 lbf pol-2, using 200 l ha-1 solution. herbicide efficacy and toxicity were evaluated at 7, 15 and 30 days after application. during harvest, reinfesting plant cover and its degree of mechanized harvest were assessed, as well as culture yield. it can be inferred that the best control of d. insularis sprouts was obtained with nicosulfuron alone at 60 g ha-1.
Johannes Calvyn oor gebedsverhoring
P.C Potgieter
Acta Theologica , 2005,
Abstract: Calvin has written extensively on prayer, not only in his Institutes, but also in his commentaries, sermons and letters. His views in this regard have been reflected in a substantial number of publications by various Calvin scholars. This article particularly researches his views on God’s answering of prayer, on which relatively little has been published yet. Some of Calvin’s views in this regard may be debatable — for instance his huge and often repeated emphasis on repentance as primary element of prayer, and his view that in delaying his answer to our prayers God is exercising us in patience. On the other hand he has said much that may currently be of significant importance for theology, and particularly for the pastoral care of the faithful in their search for understanding the ways of God.
Changes in number and distribution of hippoptamus {Hippopotamus amphibius) in the Sabie River, Kruger National Park, during the 1992 drought
P.C Viljoen
Koedoe : African Protected Area Conservation and Science , 1995, DOI: 10.4102/koedoe.v38i2.320
Abstract: The 1991/92 drought in Southern Africa and the effect of the resultant reduced flow of the Sabie River on hippopotami was investigated. Hippopotami are counted annually in the Kruger National Park's (KNP) major rivers as part of the park's monitoring pro- gramme. Two additional aerial surveys were conducted to document changes in hippopotamus population densities in the Sabie River during the drought period. The hippopotamus population decreased during the drought by 12.6 to 672 animals between July 1991 and October 1992. The highest and lowest hippopotamus densities recorded were 11.6 and 2.2 animals/km river length respectively in different river sections. Only 12 hippopotamus mortalities were recorded at the end of the 1992 dry season (October).
The didactic nature of Calvin’s De Scandalis
P.C. Potgieter
Koers : Bulletin for Christian Scholarship , 2009, DOI: 10.4102/koers.v74i4.141
Abstract: In this article the author explores the didactic nature and value of Calvin’s “De Scandalis” (1550). The reformer’s clear intention was to provide guidelines for strengthening those believers grappling with all kinds of stumbling blocks on the Christian’s path towards sanctification. Moreover, the questions that he attempted to answer are questions of faith even in the 21st century. It is argued that sound didactic principles are found throughout this publication of Calvin’s. For that reason it was – and still is – a powerful aid to those belonging to the church of Christ in dealing with the obstacles and temptations that they may experience in their spiritual lives: Biblical truths that the world may regard as foolishness; offensive and scandalous conduct by people within the church; and calumnies brought forward by adversaries of the gospel. In this context Calvin proves himself to be the catechist par excellence and an enduring example of the conscientious teacher living by the principles of Holy Scripture.
War narratives in the book of Chronicles: A new proposal in respect of their function
P.C. Beentjes
HTS Theological Studies/Teologiese Studies , 2009, DOI: 10.4102/hts.v59i3.665
Abstract: Research has shown that the majority of the narratives on war in the book of Chronicles have been created by the Chronicler himself. This article offers a fresh proposal that war narratives in the book of Chronicles are to be read and explained as a reflection of the factual military impotence of Yehud during the Persian period. This military weakness has been transformed into a theological concept in which it is God who wages war in favour of the people seeking God. The outcome of these divine actions depends on the people of Judah’s attitude, whether they “seek the Lord” or “abandon the Lord”. Therefore, these war narratives should not be traced back to the concept of holy war.
Problems Relating to hydrology, water conservation, erosion control, reforestation and agriculture in Curacao
P.C. Henriquez
Nieuwe West-Indische Gids , 1962,
Abstract:
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