Dr. Carla Chaves

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Academic Career Length

14Years (2013-Present)

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

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11 June 2014 in African Journal of Range & Forage Science

Journal Article

Structural traits of elephant grass (Pennisetum purpureumSchum.) genotypes under rotational stocking strategies

Carlos Am Gomide

Carla Chaves

Karina Guimaraes Ribeiro

Lynn E Sollenberger

Domingos Sc Paciullo

Mirton Jf Morenz

1 February 2013 in Pesquisa Agropecuária Brasileira

Journal Article

Forage production of elephant grass under intermittent stocking

Carla Chaves

Carlos Augusto de Miranda Gomide

Karina Guimaraes Ribeiro

Domingos Sávio Campos Paciullo

Francisco José da Silva Ledo

Ludmila Lacerda Campana

The objective of this work was to evaluate the dry matter production of elephant grass (Pennisetum purpureum) genotypes, managed under intermittent stocking. A completely randomized design was used, with two genotypes and three replicates. The treatments consisted of factorial combinations (2x2x2) of genotypes ('BRS Kurumi' and the clone CNPGL 00‑1‑3), two light interception levels (LI) at the onset of grazing (90 and 95%), and two post‑grazing canopy heights (30 and 50 cm). A total of 24 Holstein x Zebu crossbred heifers were used. The stocking density varied in order to finish the grazing periods in two days. The interval between the defoliation, based on 95% LI, resulted in a higher leaf mass per grazing cycle. The post‑grazing height of 30 cm did not affect the number of grazing cycles but provided a greater herbage accumulation rate. The cultivar BRS Kurumi has higher pasture growth, lower rest period, and greater number of grazing cycles, which results in increased forage production in the growing season.

24 August 2021 in Agriculture

Journal Article

Signal Grass Deferred Pastures Fertilized with Nitrogen or Intercropped with Calopo

Carla Chaves

Karina Guimaraes Ribeiro

Odilon Gomes Pereira

Dilermando Miranda da Fonseca

Paulo Roberto Cecon

Carlos Augusto Gomide

This study aimed to evaluate the accumulation, structural characteristics, and chemical composition of deferred signal-grass pastures that were subjected to four treatments: without nitrogen fertilization, intercropped with calopo (Calopogonium mucunoides), and fertilized with urea N (50 kg ha⁻¹ and 100 kg ha⁻¹) for 2 years. The design was in randomized blocks, with two blocks and two repetitions of each treatment per block. There were effects of the interaction between treatment and year on green dry mass, forage accumulation, density of vegetative tillers, and crude protein content (simulated grazing). The effects of the treatments on the height, falling index, green dry mass/dead dry mass ratio, number of dead, live and total tillers, and crude protein content (direct cutting) were also observed. Signal-grass–calopo-intercropping ensured adequate mass and forage accumulation and crude protein content equivalent to those of fertilized pastures. In addition, the intercropped pasture showed a higher percentage of leaves and a higher crude protein content compared with those for the other treatments (simulated grazing). The green dry mass/dead dry mass ratio was highest in the intercropped pasture and was equivalent to only that of the pasture fertilized with a low dose of nitrogen. Therefore, signal-grass–calopo-intercropping may be recommended for deferment.

17 April 2024 in Animals

Journal Article

Nutritional Performance of Grazing Beef Cattle Supplemented with High-Protein Distillers’ Dried Grain

Milene Rodrigues Dias

Kamila Andreatta Kling de Moraes

Andre Soares de Oliveira

Erick D. Batista

Ana Maria Rodrigues Salomão

Eduardo Henrique Bevitori Kling de Moraes

The objective was to evaluate the effects of including high-protein distillers dried grains (HP-DDG; 430 g/CP) in supplements for beef cattle in an intensive finishing pasture system. Five Nellore bulls with an average body weight (BW) of 413.5 ± 32 kg were distributed in a 5 × 5 Latin square design. The animals were randomly allocated to Marandu palisade grass paddocks (Urochloa brizantha cv. Marandu), with 0.32 ha each. Protein-energy supplements were evaluated and formulated with different replacement levels (0, 250, 500, 750 and 1000 g/kg) of soybean meal (SBM) by HP-DDG. Supplements were offered once a day in the amount of 6.0 kg/animal. Replacing SBM with HP-DDG had no effect (p > 0.10) on the intake of total and pasture DM, OM, CP, NDFap, digestible organic matter (DOM), metabolizable protein and CP:DOM ratio. Total and pasture DM intake averaged 6.07 and 11.54 kg/day, respectively. Replacing SBM with HP-DDG reduces and increases, respectively, the intake of degradable (RDP) and undegradable (RUP) protein in the rumen (p < 0.10) with a consequent linear reduction in ruminal ammonia concentration (RAN), nitrogen excretion in urine and serum N concentration (SUN) (p < 0.10). In supplements offered in the amount of 6.0 kg animal/day, SBM can be completely replaced by HP-DDG.

1 October 2016 in Arquivo Brasileiro de Medicina Veterinária e Zootecnia

Journal Article

Valor nutritivo e cinética de degradação in vitro de genótipos de capim-elefante ( Penissetum purpureum Schumach) sob dois intervalos de desfolhação e duas alturas de resíduo pós-pastejo

Carla Chaves

Karina Guimaraes Ribeiro

C.A.M. Gomide

D.S.C. Paciullo

M.J.F. Morenz

D.S. Gama

O experimento foi conduzido na Embrapa Gado de Leite, em Coronel Pacheco, MG, com o objetivo de avaliar o valor nutritivo e a cinética de degradação in vitro de genótipos de capim-elefante submetidos ao pastejo, usando-se a técnica de mob-grazing. Utilizou-se a combinação fatorial (2x2x2), sendo dois genótipos de capim-elefante (BRS Kurumi e CNPGL 00-1-3), duas interceptações luminosas (IL) à entrada dos animais nos piquetes (90 e 95%) e duas alturas de resíduo pós-pastejo (30 e 50cm), dispostos num delineamento inteiramente ao acaso, com três repetições. Para o pastejo, foram usadas 24 novilhas mestiças Holandês x Zebu, com 190kg. O genótipo BRS Kurumi apresentou maior teor de PB (15,65%), menor teor de FDN (60,35%), maior coeficiente de digestibilidade (70,04%) e mais alta taxa de degradação (2,62% h¹⁾ em relação ao outro genótipo, quando manejados a 90% IL. O manejo a 95% de IL e resíduo de 30cm favoreceu mais altos teores de PB (14,04%) e coeficientes de DIVMS (69,81%) e mais baixos teores de FDN (60,61%), independentemente do genótipo. Assim, recomenda-se a utilização do genótipo Kurumi, manejado a 90% de IL e resíduo de 30cm, quando se leva em consideração o valor nutritivo da forragem.

14 June 2024 in Animals

Journal Article

Intensively Reared Nelore Steers with Levels of Concentrate and Protein Sources during the Dry Season

Artur C. de Faria

Dheyme Cristina Bolson

Douglas Pina

Thiago A. Prado

Adriano N. Roecker

Dalton Henrique Pereira

The objective of this study was to evaluate the effect of different nutritional strategies on the intensification of beef cattle farming on pastures during the dry period of the year. Eighty male cattle (testers) were randomly allocated to 16 paddocks formed with Mombaça grass (Megathyrsus maximus), totaling five animals (testers) per paddock. The strategies consisted of two LCs [10 and 16.7 g·kg−1 body weight (BW)] and two PSs with DDGS and SBM in a completely randomized design with a 2 × 2 factorial arrangement. The chemical, structural, and productive characteristics of the forage were evaluated, as well as the performance, productivity, and serum parameters of the supplemented animals. The forage presented a greater L:C (p = 0.033) and CP content (p = 0.007) when the lowest LC was used. Animals that received the highest LC had the highest supplement intake (p < 0.001) and the lowest pasture intake (p < 0.001). The nutritional strategy with an LC of 16.7 g·kg−1 of body weight (BW) resulted in a greater increase in total BW, i.e., 200 kg·BW ha−1 more. Therefore, higher levels of concentrate ensure greater productivity for beef cattle grazing, and DDGS can replace SBM in supplements used in the intensive raising of beef cattle on pasture without compromising the performance and productivity of the animals.

About Me

m Carla Silva Chaves, born in Luz - Minas Gerais and I graduated in Animal Science, from CEFET – Bambuí, MG. I have a master's degree in Forage and Pastures from the Federal University of Vales do Jequitinhonha and Mucuri – UFVJM, Diamantina campus, MG and a PhD, also in Forage and Pastures, from the Federal University of Viçosa – UFV, Viçosa campus, MG. During my professional career, I gained experience working mainly with dairy cattle farming, that is, nutrition, pasture management, health and property management. At the end of my degree, I was a technical assistant for dairy producers in the central-western region of Minas Gerais, and soon after I started my master's degree. In 2012, with my master's degree, I worked as a commercial assistant in a feed factory in the city of Luz, however I worked throughout the southeast region of the country. Still in 2012, I moved to Goiás and then became an instructor at SENAR Goiás for cattle farming (dairy and beef) and forage and pasture farming courses, until March 2016, when I started my doctorate. In 2015, I also worked as a sales promoter for Minerphós animal homeopathy products. In 2020 I worked directly with rural producers and resellers for technical assistance and sales, respectively, in the state of Sergipe, of the DSM Tortuga brand. In 2021 I moved to the city of Sinop-MT where I started working with technical and managerial assistance to milk producers through SENAR-MT. Soon after, I passed a state selection process to tea

Dr. Carla Chaves

Dr. Carla Chaves

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