Prof. Concepta McManus

Universidade de Brasilia -UnB

Prof. Concepta McManus

Universidade de Brasilia -UnB

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Academic Career Length

37Years (1990-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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9 April 2008 in Tropical Animal Health and Production

Journal Article

Heat tolerance in Brazilian sheep: Physiological and blood parameters

Concepta Mcmanus

Giane Regina Paludo

Helder Louvandini

Rosilene Gugel

Luiz Cláudio Bastos Sasaki

Samuel Paiva

Thirty Santa Ines adult, non-lactating, non-pregnant ewes, ten with a brown coat, ten black coated and ten white coated, as well as ten Bergamasca and ten of mixed breed were used to evaluate the effect of climate on physiological and blood parameters in sheep. Two sample collections were taken (6 am and 2 pm) on six days. Sweating rate (SR), heart (HR) and breathing rates (BR), complete hemogram, rectal (RT) and skin temperatures (ST) were measured. Variance analyses were carried out using SAS®. In general, there were significant differences between animals due to skin type, time and day of collection. White coated animals showed lower HR, BR and RT, with afternoon parameters higher than morning. Correlations between HR, BR, RT, SR and ST were medium and positive. Correlations between physiological and blood traits were in general negative and medium. Packed Cell Volume (PCV), total plasma proteins, red blood cell count and hemoglobin concentration had high positive correlations between each other. The first two autovectors explained 49% of variation between traits. White coated Santa Ines animals were shown to be better adapted to climatic conditions in Central Brazil and wool sheep more affected by heat.

1 October 2020 in Theriogenology

Journal Article

Heat stress effects on sheep: Are hair sheep more heat resistant?

1 April 2006 in Poultry Science

Journal Article

Intestinal Bacterial Community and Growth Performance of Chickens Fed Diets Containing Antibiotics

A. A. Pedroso

F. A. Longo

This study was conducted to relate the performance of broiler chickens fed diets containing growth-promoting antibiotics to changes in the intestinal microbiota. The technique of denaturing gradient gel electrophoresis (DGGE) of amplicons of the region V3 of 16S rDNA was used to characterize the microbiota. Two experiments were conducted, one with broilers raised in battery cages and the other with broilers raised in floor pens. Antibiotics improved the performance of the chickens raised in floor pens only. Avilamycin, bacitracin methylene disalicylate, and enramycin induced changes in the composition of the intestinal bacterial community of the birds in both experiments. The number of bacterial genotypes found in the intestinal tract of chickens was not reduced by the antibiotics supplemented in either environment. However, the changes in the composition of the intestinal bacterial community induced by antibiotics may be related to improvement in growth performance. This was indicated by the suppression of 6 amplicons and the presence of 4 amplicons exclusive to the treatment that had the best performance in the floor pen experiment.

1 December 2015 in Livestock Science

Journal Article

Physiological and thermographic response to heat stress in zebu cattle

C.C. Cardoso

Vanessa Peripolli

S.A. Amador

E.G. Brandão

G.I.F. Esteves

Concepta Mcmanus

27 January 2016 in PLOS ONE

Journal Article

Dynamics of Cattle Production in Brazil

Concepta McManus

Julio Barcellos

Bruna Krummenauer Formenton

Potira Hermuche

Osmar Carvalho Júnior

José Braccini Neto

Movement of livestock production within a country or region has implications for genetics, adaptation, well-being, nutrition, and production logistics, particularly in continental-sized countries, such as Brazil. Cattle production in Brazil from 1977 to 2011 was spatialized, and the annual midpoint of production was calculated. Changes in the relative production and acceleration of production were calculated and spatialized using ARCGIS®. Cluster and canonical discriminant analyses were performed to further highlight differences between regions in terms of cattle production. The mean production point has moved from the Center of Minas Gerais State (in the southeast region) to the North of Goiás State (in the Midwest region). This reflects changes in environmental factors, such as pasture type, temperature and humidity. Acceleration in production in the northern region of Brazil has remained strong over the years. More recently, “traditional” cattle-rearing regions, such as the south and southeast, showed a reduction in growth rates as well as a reduction in herd size or internal migration over the period studied. These maps showed that this movement tends to be gradual, with few regions showing high acceleration or deceleration rates.

1 June 2008 in Brazilian Journal of Poultry Science

Journal Article

Plant extracts used as growth promoters in broilers

Msr Barreto

Jfm Menten

Amc Racanicci

Pwz Pereira

Pv Rizzo

Two experiments were carried out to assess the efficacy of plant extracts as alternatives for antimicrobial growth promoters in broiler diets. The performance experiment included 1,200 male broilers raised from 1 to 42 days of age. The metabolism experiment used 96 male broilers in the grower phase housed in metabolic cages for total excreta collection. At the end of the metabolism experiment, 24 birds were sacrificed to assess organ morphometrics. In both experiments, the following treatments were applied: control diet (CD); CD + 10 ppm avilamycin; CD + 1000 ppm oregano extract; CD + 1000 ppm clove extract; CD + 1000 ppm cinnamon extract; and CD + 1000 ppm red pepper extract. The microencapsulated extracts contained 20% of essential oil. No significant differences (P>0.05) in the studied performance parameters were observed among treatments. The dietary supplementation of the extracts did not influence (P>0.05) nitrogen-corrected apparent metabolizable energy values. In general, organ morphometrics was not affected by the experimental treatments, but birds fed the control diet had higher liver relative weight (P<0.05) as compared to those fed the diet containing red pepper extract, which presented the lowest liver relative weight. These results showed that there was no effect of the tested plant extracts on live performance or in organ morphometrics

About Me

Bachelor of Agricultural Science University College Dublin (1987), Master of Genetics and Animal Breeding - University of Edinburgh (1988) and Doctor In Philosophy - University of Oxford (1991). Capes grant to carry out post-doctoral studies at the University of Sydney (2002). Full professor at the University of Brasília, with a 1A productivity grant . Experience in Domestic Animal Genetics and Breeding as well as Animal Genetic Resource Conservation and Landscape Genetics. It has published more than 400 articles in journals with editorial board, 24 book chapters, more than 550 conference abstracts and more than 200 student orientations, including 52 master's, 23 doctoral, 12 post-doctoral and 90 undergraduate. Board member of the International Institute For Applied Systems Analysis (Austria), worked as a consultant for the FAO, participating together with researchers at the USDA (United States), Agricultural Research Council of South Africa and INRA of France among others. Participated as an evaluator of the "Mission 2018" program at MIT. Associate editor of the Tropical Animal Health and Production. Network of > 700 collaborators. associate editor of the Tropical Animal Health and Production magazine. Was Director of International Relations in Capes - Brazilian Ministry of Education. Member of the Brazilian Academy of Sciences, Academy of Science for the Developing World and Commander of the National Order of Scientific Merit.

Prof. Concepta McManus

Prof. Concepta McManus

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