scholarly journals Tentative de corrélation de l’origine des races bovines et des maladies associées à ou transmises par la tique Amblyomma variegatum dans les Antilles françaises

1993 ◽  
Vol 46 (1-2) ◽  
pp. 283-290
Author(s):  
Jean-Charles Maillard ◽  
S.J. Kemp ◽  
Michel Naves ◽  
C. Palin ◽  
C. Demangel ◽  
...  
Keyword(s):  
Bos Taurus ◽  
Bos Indicus ◽  
Amblyomma Variegatum ◽  
Gamma S

A l'aide de données biologiques et de la recherche historique, on a essayé d'expliquer la différence, en ce qui concerne la résistance et la sensibilité aux maladies transmises par (cowdriose) ou associées à (dermatophilose) la tique Amblyomma variegatum, entre deux races bovines des Antilles françaises : la race Créole hybride de la Guadeloupe et le zébu Brahman de la Martinique. Les polymorphismes de 5 systèmes génétiques indépendants (hémoglobine érythrocytaire, albumine et transferrine du sérum, la région classe I du complexe BolA et le gène gamma S cristallin) ont été étudiés chez différentes races, à savoir des Bos taurus d'Europe et d'Afrique, des Bos indicus d'Afrique de l'Ouest et de l'Est, le Brahamn de la Martinique et le Créole de la Guadeloupe. Par comparaison des fréquences de différents allèles de ces 5 loci polymorphiques non liés et à l'aide de deux matrices mathématiques différentes de NEI et de CAVALLI-SFORZA, on a établi les distances génétiques entre ces races. Il apparaît clairement que le bovin Créole de la Guadeloupe est dans une position intermédiaire entre le Bos taurus N'Dama de l'Afrique de l'Ouest et le Brahman.

scholarly journals Etude comparative de l’infestation des bovins Namchi (Bos taurus) et Goudali de Ngaoundéré (Bos indicus) par la tique adulte Amblyomma variegatum

2001 ◽  
Vol 54 (1) ◽  
pp. 37 ◽  
Author(s):  
M. D. Achukwi ◽  
V. N. Tanya ◽  
O. Messiné ◽  
L. M. Njongmeta
Keyword(s):  
Bos Taurus ◽  
Bos Indicus ◽  
Amblyomma Variegatum ◽  
Etude Comparative ◽  
Étude Comparative

L’attraction relative exercée par les bovins taurin Namchi et zébu Goudali de Ngaoundéré sur la tique adulte Amblyomma variegatum a été évaluée à travers l’exposition de ces animaux à l’infestation naturelle au pâturage. Le comptage des tiques adultes a été effectué une fois par semaine pendant six semaines. La méthode de l’analyse de variances (Anova) avec données répétées et les modèles linéaires généralisés (Glim) ont montré que l’infestation individuelle a été variable. Les Namchi ont moins attiré les tiques adultes que les Goudali (P < 0,05). Le taux d’infestation a varié aussi avec le temps et lesite de fixation des tiques sur l’animal (P < 0,05), la zone ventro-génitale ayant porté la plus grande charge tandis que les oreilles, le dos et la croupe ont été les moins infestés. Ces résultats suggèrent une résistance naturelle des Namchi à la tique A. variegatum. Cette aptitude innée des bovins Namchi à attirer le minimum de tiques pourrait être exploitée dans la mise en place d’une stratégie de contrôle durable et non-nocive à l’environnement.

scholarly journals Genome-wide identification of cyclin-dependent kinase (CDK) genes affecting adipocyte differentiation in cattle

BMC Genomics ◽  
2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Cuili Pan ◽  
Zhaoxiong Lei ◽  
Shuzhe Wang ◽  
Xingping Wang ◽  
Dawei Wei ◽  
...  
Keyword(s):  
Gene Family ◽  
Expression Analysis ◽  
Adipocyte Differentiation ◽  
Bos Taurus ◽  
Adipogenic Differentiation ◽  
Critical Role ◽  
Bos Indicus ◽  
Specific Expression ◽  
Genome Wide ◽  
A Genome

Abstract Background Cyclin-dependent kinases (CDKs) are protein kinases regulating important cellular processes such as cell cycle and transcription. Many CDK genes also play a critical role during adipogenic differentiation, but the role of CDK gene family in regulating bovine adipocyte differentiation has not been studied. Therefore, the present study aims to characterize the CDK gene family in bovine and study their expression pattern during adipocyte differentiation. Results We performed a genome-wide analysis and identified a number of CDK genes in several bovine species. The CDK genes were classified into 8 subfamilies through phylogenetic analysis. We found that 25 bovine CDK genes were distributed in 16 different chromosomes. Collinearity analysis revealed that the CDK gene family in Bos taurus is homologous with Bos indicus, Hybrid-Bos taurus, Hybrid Bos indicus, Bos grunniens and Bubalus bubalis. Several CDK genes had higher expression levels in preadipocytes than in differentiated adipocytes, as shown by RNA-seq analysis and qPCR, suggesting a role in the growth of emerging lipid droplets. Conclusion In this research, 185 CDK genes were identified and grouped into eight distinct clades in Bovidae, showing extensively homology. Global expression analysis of different bovine tissues and specific expression analysis during adipocytes differentiation revealed CDK4, CDK7, CDK8, CDK9 and CDK14 may be involved in bovine adipocyte differentiation. The results provide a basis for further study to determine the roles of CDK gene family in regulating adipocyte differentiation, which is beneficial for beef quality improvement.

Expression of candidate genes for residual feed intake in tropically adapted Bos taurus and Bos indicus bulls under thermoneutral and heat stress environmental conditions

2021 ◽  
pp. 102998
Author(s):  
Bianca Vilela Pires ◽  
Nedenia Bonvino Stafuzza ◽  
Luara Afonso de Freitas ◽  
Maria Eugênia Zerlotti Mercadante ◽  
Ester Silveira Ramos ◽  
...  
Keyword(s):  
Heat Stress ◽  
Candidate Genes ◽  
Feed Intake ◽  
Environmental Conditions ◽  
Bos Taurus ◽  
Bos Indicus ◽  
Residual Feed Intake

scholarly journals Differences in copper and selenium metabolism between Angus (Bos taurus) and Brahman (Bos indicus) cattle

2021 ◽  
Author(s):  
J Ranches ◽  
R Alves ◽  
M Vedovatto ◽  
E Anne Palmer ◽  
P Moriel ◽  
...  
Keyword(s):  
Bos Taurus ◽  
Bos Indicus ◽  
First Trimester ◽  
Beef Cows ◽  
Experimental Unit ◽  
University Of Florida ◽  
Brahman Cattle ◽  
Research And Education ◽  
The University ◽  
Se Status

Abstract A two-year study was conducted at the University of Florida – IFAS, Range Cattle Research and Education Center (Ona, FL) to evaluate differences in the metabolism of Cu and Se of Angus (Bos taurus) and Brahman (Bos indicus) cattle. Thirty-two pregnant beef cows (n = 8 Brahman and 8 Angus/year) were enrolled in the study in the first trimester of gestation. The study consisted of 3 phases: (1) restriction (d 0 to d 90); (2) supplementation (d 91 to 150), and (3) calving. During all 3 phases, cows were individually fed and housed in partially covered drylot pens. During the restriction and supplementation phases cows were provided a 1.5 kg/d of a grain-based concentrate supplement, which was fortified with flowers of S (50 g of supplemental S/cow daily; restriction phase) or Cu and Se (100 and 3 mg/d of Cu and Se, respectively; supplementation phase). Blood and liver samples were collected from all cows on 30 d intervals and from both cows and calves within 24 h of calving. Colostrum and milk samples were collected at calving and 7 d after birth. All data were analyzed using the MIXED procedure of SAS, where cow and calf were the experimental unit. During the restriction phase, a breed × day effect (P = 0.03) was observed where Brahman had greater liver Cu concentration than Angus cows in all sampling days. For liver Se concentration, a tendency (P = 0.07) for a breed effect was observed where Angus cows tended to have greater liver Se concentration than Brahman. During the supplementation phase, breed (P &lt; 0.001) and day (P &lt; 0.01) effects were observed, where Brahman cows had greater liver Cu concentration than Angus. For liver Se concentration, a day effect (P &lt; 0.001) was observed, where liver Se concentration increased (P &lt; 0.001) from d 90 to 120 and remained unchanged (P = 0.86) until d 150. At calving no effects of breed (P = 0.34) were observed for liver Cu concentration of cows, however, Brahman calves tended (P = 0.09) to have greater liver Cu concentration than Angus calves. For Se liver concentration at calving, Angus cows tended (P = 0.07) to have greater liver Se concentration than Brahman cows, however no breed differences (P = 0.70) were observed for liver Se concentration of calves at birth. In summary substantial differences in multiple indicators of Cu and Se status were observed between Angus and Brahman cattle, implying that Angus and Brahman cattle possibly have different mechanisms to maintain adequate Cu and Se status.

Chemical composition of whole body and carcass of Bos indicus and tropically adapted Bos taurus breeds

2011 ◽  
Vol 89 (9) ◽  
pp. 2859-2866 ◽  
Author(s):  
S. F. M. Bonilha ◽  
L. O. Tedeschi ◽  
I. U. Packer ◽  
A. G. Razook ◽  
R. F. Nardon ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Bos Taurus ◽  
Bos Indicus ◽  
Whole Body

scholarly journals Y chromosome variants in cattle Bos taurus and Bos indicus

1982 ◽  
Vol 14 (1) ◽  
pp. 1 ◽  
Author(s):  
CRE Halnan ◽  
Janine I Watson
Keyword(s):  
Y Chromosome ◽  
Bos Taurus ◽  
Bos Indicus

scholarly journals Metabolic and endocrine differences between Bos taurus and Bos indicus females that impact the interaction of nutrition with reproduction

2016 ◽  
Vol 86 (1) ◽  
pp. 32-40 ◽  
Author(s):  
Roberto Sartori ◽  
Lindsay U. Gimenes ◽  
Pedro L.J. Monteiro ◽  
Leonardo F. Melo ◽  
Pietro S. Baruselli ◽  
...  
Keyword(s):  
Bos Taurus ◽  
Bos Indicus

scholarly journals Controle do carrapato Boophilus microplus (Acari: Ixodidae) em sistemas de produção de leite da microrregião fisiográfica fluminense do grande Rio - Rio de Janeiro

2000 ◽  
Vol 30 (2) ◽  
pp. 305-311 ◽  
Author(s):  
Juracy de Castro Borba Santos Júnior ◽  
John Furlong ◽  
Erik Daemon
Keyword(s):  
Rio De Janeiro ◽  
Bos Taurus ◽  
Bos Indicus ◽  
Boophilus Microplus

O objetivo do trabalho foi analisar os métodos de controle do carrapato Boophilus microplus realizados em três fazendas representativas dos sistemas de produção de leite da Microrregião Fisiográfica Fluminense do Grande Rio, Rio de Janeiro, levando-se em consideração o manejo das fazendas, o grau de sangue Bos taurus e Bos indicus dos rebanhos, os fatores climáticos e a prevalência estacional do carrapato. Para efeito de avaliação, foi utilizada a contagem periódica de fêmeas ingurgitadas medindo entre 4,5 e 8mm, no antímero direito de 20% das vacas em lactação de cada fazenda, durante um ano. A diferença no manejo das pastagens, a composição genética dos rebanhos e as condições climáticas influenciaram a prevalência estacional de B. microplus. A maior lotação animal por hectare, o elevado "stand" vegetativo das pastagens e o maior grau de sangue B. taurus contribuíram para as maiores infestações de carrapatos nas fazendas. O controle de B. microplus realizado pelos proprietários teve importância secundária em relação as outras atitudes de manejo dos rebanhos. Ficou evidenciado o uso excessivo e ineficiente de produtos químicos para o controle de B. microplus nas fazendas. Para implantação de medidas de controle estratégico do B. Microplus, fazem-se necessários esforços para a transferência e adoção dos resultados de pesquisas disponíveis aos produtores rurais.

scholarly journals Kazakhstani native cattle reveal highly divergent mtDNA from Bos taurus and Bos indicus lineages with an absence of Bos indicus Y chromosome

2018 ◽  
Vol 90 (1) ◽  
pp. 29-34
Author(s):  
Hayate Yamanaka ◽  
Kako Murata ◽  
Risa Tabata ◽  
Fuki Kawaguchi ◽  
Shinji Sasazaki ◽  
...  
Keyword(s):  
Y Chromosome ◽  
Bos Taurus ◽  
Bos Indicus ◽  
Native Cattle
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