scholarly journals Characterization of carcasses of Zebu cattle raised in a semiarid region according to sex

2020 ◽  
Vol 49 ◽  
Author(s):  
Filipe Martins Ferraz ◽  
Fredson Vieira e Silva ◽  
Laura Lúcia dos Santos Oliveira ◽  
Iran Borges ◽  
Dorismar David Alves ◽  
...  
Keyword(s):  
Semiarid Region ◽  
Zebu Cattle

scholarly journals Characterization of actinobacteria from the semiarid region, and their antagonistic effect on strains of rhizobia

2017 ◽  
Vol 16 (11) ◽  
pp. 499-507 ◽  
Author(s):  
Vinicius Leite Lima Jose ◽  
Claudia Silveira Martins Suzana ◽  
Aparecida de Siqueira Katia ◽  
Antonio Soares Marcos ◽  
Miranda Martins Claudia
Keyword(s):  
Antagonistic Effect ◽  
Semiarid Region

Ecological, morphological and genetic characterization of sympatric Haemonchus spp. parasites of domestic ruminants in Mauritania

Parasitology ◽  
1995 ◽  
Vol 110 (4) ◽  
pp. 483-492 ◽  
Author(s):  
P. Jacquiet ◽  
J. F. Humbert ◽  
A. M. Comes ◽  
J. Cabaret ◽  
A. Thiam ◽  
...  
Keyword(s):  
Rainy Season ◽  
Genetic Characterization ◽  
Random Amplified Polymorphic Dna ◽  
Intraspecific Variability ◽  
Species Traits ◽  
The Other ◽  
Survival Strategies ◽  
Zebu Cattle ◽  
Sheep And Goats

SUMMARYThe 4 species of ruminants (dromedary, zebu cattle, sheep and goat) in arid areas of Mauritania harboured Haemonchus spp. as the most frequent internal parasite. This was a rare situation where the 3 putative species, H. longistipes (dromedary), H. placet (zebu cattle) and H. contortus (sheep and goat) occurred sympatrically. The study was undertaken on hosts slaughtered at the Nouakchott abattoir, on the basis of monthly collection of worms. The environment was very unfavourable to H. placei and unfavourable to H. contortus, as intensity of infection remained low throughout the year, whereas infection in the dromedary was 10 to 20-fold higher. The survival strategies during the long, dry season were different: the surviving stages were either 4th-stage larvae in digesta (dromedaries), 4th-stage larvae either in digesta or mucosae (cattle), or 4th-stage larvae in mucosae and few adults (sheep and goats). The prolificacy of female worms, indicative of the potential to contaminate pastures, was similar for all Haemonchus spp. in the rainy season. H. longistipes behave differently during the pre-rainy season as no increase of prolificacy could be demonstrated as observed in the other species. Traits of vulvar morphology are considered as markers of ecological adaptation and were studied. The knobbed and smooth female morphs (in equal proportions) were the most frequent in H. longistipes, the knobbed morph out-numbered the other morphs in H. placei, and all 3 morphs were present in sheep and goats with the linguiform form being predominant. Genetic characterization of the 3 species was performed by means of Random Amplified Polymorphic DNA (RAPD). Three groups were obtained from analysis of these data: 1 group with individuals of H. contortus, 1 group with individuals of H. placei, and 1 group with individuals of H. longistipes. This indicated that, although the 3 species were valid, H. contortus and H. placei were more similar. Intraspecific variability was 2-fold higher in H. contortus than in the 2 other species. The ecological, morphological and genetical studies showed that H. longistipes, H. placei and H. contortus could be arranged in increasing order of variability.

scholarly journals MORPHOPHYSIOLOGY OF RHIZOBIA ISOLATED FROM NATIVE FORAGE OF FABACEAE OF THE CAATINGA

2019 ◽  
Vol 32 (4) ◽  
pp. 904-914
Author(s):  
SUELANE DE MELO DIAS ◽  
ALBERÍCIO PEREIRA DE ANDRADE ◽  
ADAILSON PEREIRA DE SOUZA ◽  
ANDRÉ LUIZ RODRIGUES MAGALHÃES ◽  
RISELANE DE LUCENA ALCÂNTARA BRUNO ◽  
...  
Keyword(s):  
High Temperatures ◽  
Native Species ◽  
Growth Period ◽  
Semiarid Region ◽  
Ph Tolerance ◽  
Resistance To Stress ◽  
Macroptilium Atropurpureum ◽  
Physiological Tests ◽  
Exopolysaccharides Production

ABSTRACT The rhizobia found in Fabaceae plants of the Caatinga may have potential as fodder in the semiarid region, thus increasing the availability of feed for animal production in this region. This study aimed to characterize the morphophysiology of rhizobia strains of the forage species Mimosa tenuiflora (Jurema preta), Macroptilium atropurpureum (Siratro), and Desmanthus pernambucanus (Jureminha). The soil used as the substrate was collected at specific locations in the municipalities of Sertânia, Arcoverde, and São Bento do Una, state of Pernambuco. The characterization of rhizobial colonies included growth period, diameter, elevation, transparency, exopolysaccharides production, and color. In addition, salinity, temperature, and pH tolerance tests of the native rhizobia were conducted. Evaluation of cultures showed that the isolates formed colonies with flat elevation, moderate production of exopolysaccharides, coloration varying from cream to white, and a smooth surface. Physiological tests of abiotic stress resistance showed that the native species isolated from M. tenuiflora were more resistant when grown in soils from the municipality of Sertânia and isolates from M. atropurpureum and D. pernambucanus had high resistance to high temperatures, regardless of place of farming. It can be concluded that native rhizobia from the Semiarid region of Pernambuco show resistance to stress caused by high temperatures, salinity variation, and pH. These characteristics are influenced by soil and the botanical species in symbiosis with the rhizobia.

scholarly journals Polyphasic characterization of forage legumes root nodule bacteria isolated from semiarid region in Brazil

2018 ◽  
Vol 41 (3) ◽  
pp. 612-624 ◽  
Author(s):  
Gérsika Fakirra de Oliveira Nunes ◽  
Kelly Alexsandra Souza Menezes ◽  
Aline Araújo Sampaio ◽  
Jakson Leite ◽  
Paulo Ivan Fernandes-Júnior ◽  
...  
Keyword(s):  
Root Nodule ◽  
Semiarid Region ◽  
Nodule Bacteria ◽  
Forage Legumes ◽  
Root Nodule Bacteria ◽  
Polyphasic Characterization

scholarly journals AGRONOMIC AND MORPHOLOGICAL CHARACTERIZATION OF LIPPIA (VERBENACEAE) SPECIES NATIVE FROM BRAZILIAN SEMIARID REGION

2017 ◽  
Vol 92 (2) ◽  
pp. 147
Author(s):  
Ariana Reis Messias Fernandes de Oliveira ◽  
Lenaldo Muniz Oliveira ◽  
José Floriano Barea Pastore ◽  
Tânia Regina dos Santos Silva ◽  
Larissa Correa do Bonfim Costa
Keyword(s):  
Essential Oil ◽  
Agronomic Traits ◽  
Morphological Characterization ◽  
Semiarid Region ◽  
Brazilian Semiarid ◽  
Aromatic Species ◽  
Morphological Differences ◽  
Stem Leaf ◽  
Essential Oil Yield

The genus Lippia L. is represented by several aromatic species, producing essential oils with biological activity, especially antimicrobial.  The semiarid region of Bahia contains several Lippia species that could be economically exploited. This study aimed to characterize morphological and agronomic traits of four species of Lippia native of the semiarid region. The species were collected in a number of cities of the state of Bahia. The experimental design was performed in randomized blocks with four repetitions and four plants per repetition for each species. We conducted quantitative and qualitative morphological characterizations, and evaluated the characters of stem, leaf and inflorescence; in addition to the agronomic characterization, with the fresh and dry matter of inflorescences, we evaluated leaves and stem and essential oil content and yield. The results showed morphological differences between the species for all traits evaluated, except for the number of flowers per inflorescence. The agronomical characterization showed differences for all measured characters, and the species Lippia lasiocalycina was distinguished by the essential oil yield.

scholarly journals Genetic Characterization of Indubrasil Cattle Breed Population

2018 ◽  
Vol 5 (4) ◽  
pp. 98
Author(s):  
Ricardo Zanella ◽  
Luísa Lago ◽  
Arthur da Silva ◽  
Fábio Pértille ◽  
Nathã de Carvalho ◽  
...  
Keyword(s):  
Large Scale ◽  
Cattle Breed ◽  
Pedigree Information ◽  
Zebu Cattle ◽  
Runs Of Homozygosity ◽  
Effective Population ◽  
Single Nucleotide ◽  
Genomic Markers ◽  
Snp Panel

The Indubrasil breed was developed in the Brazilian region called Triângulo Mineiro as a result of a cross between zebu cattle. Initially, it was used as a terminal cross and currently it represents approximately 4.45% of all the Brazilian zebu cattle. Studies were conducted to estimate genetic parameters in the Indubrasil using pedigree information, however, until now, no study has been developed using large-scale genomic markers in this breed. Pedigree information are widely used to investigate population parameters; however, they can neglect some estimates when compared to the use of genomic markers. Therefore, the objective of this study was to investigate the population structure and the genetic diversity of Indubrasil cattle using a high-density Single Nucleotide Polymorphism (SNP) panel (Illumina BovineHD BeadChip 700k). Levels of genomic homozygosity were evaluated using three different approaches: Runs of homozygosity (FROH), % of homozygosis (FSNP), and inbreeding coefficient (Fx). Further, Runs of Homozygosity (ROH) segments conserved among the animals were investigated to identify possible regions associated with the breed characteristics. Our results indicate that even the Indubrasil breed having a small effective population size, the levels of homozygosity (FROH = 0.046) are still small. This was possibly caused by the cross conducted among different breeds for its development. It suggests no immediate risks associated with loss of genetic variation. This information might be used in breeding programs, for the breed conservation and for the expansion of the Indubrasil breed.

Characterization of the Exonic Regions of the JY-1 Gene in Zebu Cattle and Buffaloes

2013 ◽  
Vol 48 (6) ◽  
pp. 918-922 ◽  
Author(s):  
GMF de Camargo ◽  
F Baldi ◽  
LCA Regitano ◽  
H Tonhati
Keyword(s):  
Zebu Cattle

Phenotypic characterization of the Saudi Arabian Hassawi cattle breed

1997 ◽  
Vol 21 ◽  
pp. 35-42 ◽  
Author(s):  
T. A. Mohammed
Keyword(s):  
Bos Taurus ◽  
Bos Indicus ◽  
Cattle Breed ◽  
Farming System ◽  
Phenotypic Characterization ◽  
Zebu Cattle ◽  
Body Conformation ◽  
High Feed ◽  
Farming Families

SummaryHassawi cattle breed is a mix of Bos indicus and Bos taurus. The cattle are raised in the Eastern province of the country by farming families in mixed farming system. The breed numbers are declining very fast, from 10 449 head in 1986 to an estimated maximum of 4 500 head at present.The decrease is mainly due to replacement by exotic breeds, the indiscriminate crossing with these exotics, particularly in view of the scarcity of the Hassawi bulls for mating. Animals are small in size, mature body weight 210-270 kg for bulls and 150-200 kg for cows, quite uniform in colour (light red) and body conformation have conspicuously reduced dewlap and umbilical folds and relatively large hump. Animals are heat tolerant, sustain high feed intake under ambient temperature, resistant to many diseases prevailing in the region and cows have good mothering ability. Productivity of the breed in terms of meat and milk is low when compared to that of exotics in high input production environments, but reproduction performance excels that of temperate breeds and zebu cattle.Efforts should be made to stop the decline in the breed numbers and to conserve the breed as an asset for production under harsh environment.

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