scholarly journals Facteurs affectant les performances de croissance chez les bovins à viande de pure race Goudali et croisés Wakwa dans un environnement tropical

Author(s):  
A. L. Ebangi ◽  
G. J. Erasmus ◽  
D. A. Mbah ◽  
C. L. Tawah ◽  
O. Messiné
Keyword(s):  

Des données relatives aux performances présevrage et postsevrage de veaux de race pure Goudali et demi-sang Wakwa ont été collectées au Centre de recherche agricole pour le développement de Wakwa, Ngaoundéré, Cameroun. Ces données ont été analysées à l’aide de procédures de modèle mixte pour déterminer les facteurs affectant les performances. Les résultats ont montré que les effets maternel, du sexe, du troupeau, de la saison et de l’année de naissance, de l’âge au sevrage (WAGE), de l’âge exact (jours) aux pesées à un an (YAGE) et à 18 mois (EAGE) ont été significatifs (P < 0,01 ou P < 0,001) sur les performances présevrage et/ou postsevrage. Les veaux mâles ont eu des performances supérieures à celles des femelles chez les Goudali et les Wakwa, respectivement de 0,8 et 0,6 kg pour le poids à la naissance (BWT), de 11,3 et 12,8 kg pour le poids au sevrage (WWT), de 14,5 et 15,1 kg pour le poids à un an (YWT), de 13,4 et 11,9 kg pour le poids à 18 mois (EWT), et une croissance présevrage plus rapide de 0,04 et 0,06 kg/jour. Les veaux nés en saison sèche ont été plus lourds que les veaux nés en saison pluvieuse chez les Goudali et les Wakwa, respectivement de 19,0 et 21,7 kg (WWT), de 6,0 et 8,8 kg (YWT), et de 18,2 et 26,5 kg (EWT). Les meilleures performances ont été enregistrées chez les veaux nés de femelles âgées de 3 à 7 ans (CAG1) chez les Goudali et chez les veaux nés de femelles âgées de 8 à 10 ans (CAG2) chez les Wakwa. Pour une meilleure évaluation des performances des veaux, il est nécessaire de prendre en considération ces effets significatifs.

Author(s):  
Rowena Lamy

The Race A/Race B hybrid females of D. pseudo-obscura have a high percentage of fertility, comparable with that of females of pure race. The number and viability of their offspring, however, are largely affected by the genetic constitution of the hybrid female as well as by that of the male to which she is mated in the backcross. Hence the performance of any given hybrid is determined in the first instance by the actual strains of the pure races which are used in making the P1 racial cross. Generally speaking the results are of the same order whenever the same strains are used. The progenies of hybrid females of different genetic constitution may differ in three main aspects: (1) The total number of offspring may be comparable with that usually obtained in a pure race cross; it may be reduced to any extent; in certain matings it is consistently at zero. (2) The sex ratio may be completely normal or male-deficient or female-deficient in any degree; completely uni-sexual progenies are sometimes obtained. (The above observations are mainly in agreement with reports of earlier writers; cf. Lancefield, 1929, Dobzhansky, 1936, Mampell, 1941, Sturtevant, 1937.) (3) “Viability characters,” i.e. those affecting general vigour and physical normality, may be of a high or a low grade; some progenies are comparable in this respect with the pure race, the only exception being that they show a much greater range of variation in body-size of both sexes, and in the testis size of males, abnormalities which are common to all back-cross progenies whatever the genetic constitution of the mother or father. Some progenies show in addition deformities of a peculiar type usually affecting the abdomen and occasionally the legs and wings.


1958 ◽  
Vol 36 (8) ◽  
pp. 783-791 ◽  
Author(s):  
D. R. Idler ◽  
H. Tsuyuki

Physical measurements have been made on all major organs and tissues of a pure race of migrating adult Oncorhynchus nerka. The data show that the population was sufficiently uniform in size that average weights and measurements performed on fish taken at three locations on the migration route quite accurately represented a standard fish of both sexes. The results will enable chemical analyses to be interpreted as changes in absolute amounts of a given tissue component rather than only on a percentage basis. The merits of this approach to an evaluation of changes in migrating salmon is demonstrated by the magnitude of the weight changes in many tissues during the 715-mile migration. A standard male lost only 11% of its body flesh whereas a standard female lost 30%. The alimentary tract decreased to one sixth of the initial weight. The milt increased by 51% w hile the roe increased by 272%. Thus, it is apparent that percentage composition data cannot show quantitative changes in a fish as it moves up the river. The results are discussed in relation to the findings of others on Salmonidae.Plasma cholesterol, magnesium, calcium, sulphate, and urea levels were measured on pooled blood samples from the 216 fish.


1958 ◽  
Vol 36 (1) ◽  
pp. 783-791 ◽  
Author(s):  
D. R. Idler ◽  
H. Tsuyuki

Physical measurements have been made on all major organs and tissues of a pure race of migrating adult Oncorhynchus nerka. The data show that the population was sufficiently uniform in size that average weights and measurements performed on fish taken at three locations on the migration route quite accurately represented a standard fish of both sexes. The results will enable chemical analyses to be interpreted as changes in absolute amounts of a given tissue component rather than only on a percentage basis. The merits of this approach to an evaluation of changes in migrating salmon is demonstrated by the magnitude of the weight changes in many tissues during the 715-mile migration. A standard male lost only 11% of its body flesh whereas a standard female lost 30%. The alimentary tract decreased to one sixth of the initial weight. The milt increased by 51% w hile the roe increased by 272%. Thus, it is apparent that percentage composition data cannot show quantitative changes in a fish as it moves up the river. The results are discussed in relation to the findings of others on Salmonidae.Plasma cholesterol, magnesium, calcium, sulphate, and urea levels were measured on pooled blood samples from the 216 fish.


Apidologie ◽  
1994 ◽  
Vol 25 (2) ◽  
pp. 133-143 ◽  
Author(s):  
D. Kauhausen-Keller ◽  
R. Keller
Keyword(s):  

1991 ◽  
Vol 27 (108) ◽  
pp. 352-365 ◽  
Author(s):  
Terence Denman

In recent years there has been a lively historical debate on English perceptions of the Irish. The growth and persistence of ‘racial’ stereotypes that go back to the sixteenth and seventeenth centuries, and which survive even today, have been traced. The Irish, the Catholic Irish above all, were usually perceived in England in an unfavourable or a downright hostile fashion, which reflected the often troubled colonial relationship between England and Ireland. The mass emigration from Ireland to England in the nineteenth century, which brought millions of Irish into direct contact with the English, intensified both the fear of the Irish and the patronising attitudes which accompanied that fear. Historical research has, undoubtedly, added considerably to our understanding of the complexity of anti-Irish feeling: how it depended on class as well as ethnic prejudice; and how it often existed alongside an idealised, sentimental picture of the Catholic Irish as a vigorous and ‘pure’ race, with a culture unsullied by the corrupting influence of modern industrial civilisation.


Pannoniana ◽  
2019 ◽  
Vol 3 (1-2) ◽  
pp. 285-292
Author(s):  
Bojan Stipešević

Abstract Even though eco-production is based on principles brought by IFOAM (International Federation of Organic Agriculture Movements), the standards which were brought in by the national and supranational governments may differentiate in parts of regulation. The mutual recognition/equivalence of eco-standards of the EU (»EU-eco« label, based on regulation of the European Commission EZ 834/2007: 139-and EZ 889/2008: 173-256, and other regulations derived from them) and Canada (»Canada organic« label, based on valid Canadian eco-standards, regulation CAN/CGSB-32.310-2015: 53 and CAN/CGSB-32.311-2015: 75) has been present for multiple years and has been re-evaluated and confirmed in 2015 as a successful practice in the increase of access to an expanded market for producers, increase of selection for consumers and lightening the regulatory cooperation. Before mutual recognition exported eco-product from Canada to the EU (and vice-versa) had to go through recertification, which created additional expenses for exporting eco-producers (10 thousand dollars per year, on average). This process mostly resulted in an increased price of eco-products for the end consumer. In some areas the Canadian eco-regulation is stricter than the EU one, while in other it is vice versa. Some markings can mislead the consumer, especially the one who does not read the product declaration where such misgivings are clearly visible and marked. The greatest challenge for eco-production in the EU is the increase in demand for eco-products with such a speed that EU farmers cannot satisfy it, which inevitably leads to an increase of import from non-EU countries. Therefore, the help of EU governments is essential in the form of support for farmers who decide to transition into eco-production. Certain estimates say that the CETA could mean a loss of a great number of producers (estimating that it could be several thousand workplaces in agriculture across the EU). A similar agreement between the US and Mexico already led to a loss of workplace for 2 million people in Mexico in the midst of inability to compete with the industrial production of the US. The greatest fear present in eco-production is that the international agricultural businesses can force national and supranational governments to lower standards by using lawsuits, which can consequentially result in lower standards in eco-production on both sides of the Atlantic and influence the environment. It is not based on the scientific/expert arguments which governs the ecological agriculture, but a pure race for profit. Therefore, it can be expected that, once again, »greed overcomes reason«. Nevertheless, the high set »bar« of eco-production »from both sides of the pond« is the best »defence« against the fear that CETA will bring any novelties into the life of eco-producers.


Author(s):  
A. V. Kolesnyk

The late period of Ivan Franko's artistic work is characterized by the presence of a number of stories that contain a naturalistic reproduction of Jewish themes. In such stories as «Pure Race», «In the Prison Hospital», «In the Carpentry», «In the Forge (From My Memories)» there are memories of the author about different stages of his life, which clearly distinguishes the Jewish theme revealed by naturalistic means.The story «Pure Race» demonstrates the collision in the life of an old Jew who found himself in a compartment of a train with representatives of other nationalities. The description of events in the compartment is presented with elements of naturalism – the use of factualism and a detailed description of events, the objectivity of the image. The story «In the prison hospital» has the following naturalistic features: the story tells about the stay in the hospital of two or three seriously ill people with a detailed description of the circumstances of their lives with factual accuracy. The story «In the Carpentry» contains a fragment from the life of a Jew, written by the author from his youthful memories and under the influence of a certain historical moment. The story describes the terrible murder of calves by a Jewish boy, with the fixation of all the details that convey all the burden of what was seen in the soul of the hero. The story «In the Forge (From my memories)» contains the author's childhood memories from his stay in the father's forge with the recording of all the small moments of his impressions. In the memoirs there is a naturalistic description with a detailed account of events in life of Boryslav.In the above stories, with the help of naturalistic means, the problems of Jewish life in Galicia are reproduced. Among the naturalistic features of the depiction of Jewish figures there are: factography, detailed description with fixation of all the details as a consequence of scientific accuracy, plausibility, objectivity of reproduction and unity in the depiction of natural and social factors, which together makes the reader their witness.


Author(s):  
Julia Alekseevna Abbyasova ◽  
Ekaterina Olegovna Golovina ◽  
Yuriy Vladimirovich Ishkov

The article analyzes the processes of illegal use of prohibited methods of research by Nazi physicians during their medical experiments on live people-prisoners of the concentration camps Auschwitz-Birkenau and Dachau during the Second World War. Medical experiments on living people, prisoners of concentration camps, as a rule, resulted in their death or caused severe and irreparable harm to health. These experiments supported by the idea of creating "pure race" were conducted by physicians of Nazi Germany in the death camps located throughout Europe. The leaders of the Nazi hierarchy developed the foundations of their fascist ideology, using the works of German sociologists (Houston Stewart Chamberlain, Hans Friedrich Carl Guenther, Walter Wuest) and geneticists (Eugen Fischer, Erwin Bauer and Fritz Lenz, etc.), many of whom came to the conclusion that the possibility of creating the necessary conditions in Nazi Germany for the purpose of improving the human race was closely linked to limiting reproduction of the "lower" peoples. The Nuremberg trial of Nazi criminals (1945-1946) identified serious crimes of Nazi physicians, who conducted medical experiments on people in concentration camps, and claimed them inhuman and breaking all international and human rights.


MANUSYA ◽  
2004 ◽  
Vol 7 (2) ◽  
pp. 32-55
Author(s):  
Sopha Chanamool

A discourse on the Thai Nation by progressive intellectuals in Thailand during 1950's-1960's is discussed. During this period they formed a narrative, and a new meaning of "Chat Thai" or Thai nation. The progressive intellectuals, such as Malai Chupinit, Sod Kuramarohit, Assani Ponlachan and Chit Phumisak debated a new meaning of national identity. They described the Thai Nation differently to the previous elite groups, such as King Rama VI in the 1920's and Luang Wichitwatakan in the 1940's. King Rama VI wrote about the great ancient kingdom of Sukhothai. Luang Wichitwatakan expanded on that to show the greatness of the Thai nation since ancient times, and also that the Thai race was shaped from a pure race and had a unity of Thai culture. Conversely, the progressive intellectuals argued that the Thai nation was not shaped from a pure Thai race, and also that it did not have a unity of Thai culture. According to them the Thai nation was formed from ethnic heterogeneity and cultural diversity. Their ideas about the communities which made up the Thai nation held that Thai people from different regions have their own cultures (their own historical background, their own local languages, their own way of life), which are different to the central Thai culture. Furthermore, they recognised the importance of all Thai people, regardless of class, and. the minority ethnic groups in shaping the Thai Nation.


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