We studied the relationship between body morphometric traits, and their underlying association with milk production (MP), lactation length (LL), first calving interval (FCI) and subsequent calving interval (CI) of crossbred progeny of Murrah × Jafarabadi buffalo aiming to assist in selection programs. We carried out principal component analysis (PCA) of the body morphometric traits, which include breast width (BW), thigh width (THW), hip width (HW), rump width (RW), rump length (RL), body depth (BD), body length (BL), height withers (HEW), rear height (RH), shoulder width (SW), thorax width (TW), loin width (LW), distance from the head to ischium (DHI), and thoracic perimeter (TP). We determined the association of morphometric traits with milk/reproduction traits using canonical correlation analysis (CCA). The analysis revealed that the first six PCA accounted for 82.14% of the total observed variation, and the traits THW, HW, TW, LW, RW, HEW, TP, RH, and BW, accounted for almost half (48.00%) of the total variance indicating a higher contribution in body structural conformation. The first canonical function was significant (p<0.05), accounted for 72.46% of the total variance, and the canonical correlation was 0.56, indicating the dependence between both groups of traits. Higher canonical loadings were obtained for LL (0.49), FCI (0.46), BW (-0.71), BL (-0.56), DHI (-0.34), HEW, (-0.38) and TP (-0.50). These traits were most important for the derivation of canonical statistical variables, and presented a higher canonical correlations (r) between the dependent (LL/FCI) and independent (BW, BL, DHI, HEW and TP) groups. The results could suggest that the body morphometric traits THW, HW, TW, LW, RW, HEW, BD, TP, RH, and BW could play important role in body
The species of the Culicoides genus are hematophagous, and some of them are vectors of important human and animal diseases. This group of insects is distributed worldwide, varying according to local species. Knowledge of the geographic distribution of specific species is crucial for the development and implementation of control strategies. The aim of this work was to investigate the occurrence of Culicoides in the state of Alagoas in northeast Brazil. Midges were captured with CDC light traps, and their identification and morphological analyses were performed by the Ceratopogonidae Collection of the Oswaldo Cruz Foundation (FIOCRUZ/CCER) in Rio de Janeiro, Brazil. Morphological analyses were performed using the key to Culicoides from the guttatus group and comparison with other deposited specimens. DNA sequencing, genetic analysis and comparison with sequences in the Genbank database, confirmed the identification of the flies as Culicoides insignis. This was the first formal report of C. insignis being found in Alagoas.
A mastite é uma das principais enfermidades que acomete o rebanho leiteiro, sendo causada por diversos micro-organismos dos quais se destacam as bactérias Staphylococcus aureus e Escherichia coli. O tratamento para esta enfermidade é realizado, geralmente, por meio do uso de antibióticos via intramamária. No entanto, o uso inadequado desses medicamentos tem contribuído para a seleção de cepas de micro-organismos resistentes, dificultando o tratamento e controle da mastite. Com isso, objetivou-se avaliar cepas das bactérias S. aureus e E. coli frente aos antibióticos: Florfenicol, Enrofloxacina, Gentamicina, Amicacina, Tetraciclina, Norfloxacina, Cefalotina, Cefalexina, Gentamicina, Neomicina, Amoxilina, Ampicilina + Sulbactam, Cefoxitina, Bacitracina, Ampicilina e Penicilina. As bactérias foram inoculadas em solução salina 0,9% e semeadas em 100 µL de meio Mueller Hinton com os discos de antibióticos. Os testes foram realizados em quadruplicata e as placas incubadas a 37°C durante 24h. Os resultados mostraram que S. aureus foi resistente a penicilina (10µg) e ampicilina (10µg), apresentando maior sensibilidade ao antibiótico florfenicol (30µg). A bactéria E. coli também apresentou maior sensibilidade ao florfenicol (30µg), sendo resistente à bacitracina (10µg). Nossos resultados indicaram que a investigação por novas alternativas para o tratamento da mastite é urgente e necessária.
Raw milk is a food with great consumption and economic value in Brazil. However, is susceptible of contamination by pathogenic bacteria. The aimed of this study was to evaluate the quality of in natura milk based on microbiological in three dairy farms, somatic cells counting (SCC), bacterial counting and his physical-chemical composition. Were made the following microbiological analysis: counting of mesophilic and psychrotrophic bacteria, coliforms at 30 ºC, coliforms at 45 ºC, Staphylococcus spp., Listeria spp., and SCC. The physical-chemical analysis was fat, protein, lactose, total solids, urea, and casein. There was no evidence of Salmonella spp. and Escherichia coli were identified in any samples. In accordance to the microbiological standards established by Normative Instruction 76 only coliforms 30 ºC and 45 ºC counts were above the standards. There was a significant difference (p≤0.05) between the three farms studied regarding most microbiological aspects. Also, was observed difference (p≤0.05) for most of physical-chemical aspects. Overall, the milk produced in the regions of Alagoas State fails to meet just a constant criterion in the current legislation.
Endophytic fungi are microorganisms that live inside plants, establishing a mutualistic relationship, where both benefit from this interaction. They require protection and nutrients from host plants, and in return fungi can contribute to host's growth and nutrient uptake. In addition, they can improve plant tolerance to abiotic and biotic stresses and increase plant resistance to insects and pests. Endophytic fungi produce bioactive compounds similar to those of the host plant. The economic exploitation of these bioactive compounds is much promising. These bioactive products are related to sustainable production systems and to the development of new substances with strong pharmacological properties such as antiviral, antifungal, anti-inflammatory, antitumor and antiparasitic, antidiabetic and immunosuppressant, including response to resistant microorganisms. This study is a descriptive review, having as aim to approach the main benefits of endophytic fungi for host plants, as well as the biotechnological application of the bioactive compounds produced by them. The prospection of endophytic in extreme environment could result in discovery of new bioactive compounds with surprising potential for biotechnology area. So, the development of new research frontiers in this issue is indispensable for the sustainable exploitation of the great benefits that these microorganisms could provide to the science.
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