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Abstract

This chapter presents the energy, protein and mineral requirements of lactating Nelore cows and calves. Various models and techniques used to estimate the nutrient requirements, milk production and milk composition are discussed.

Author(s)
Paulino, P. V. R.; Fonseca, M. A.; Henriques, L. T.; Valadares Filho, S. de C.; Detmann, E.
Publisher
Federal Univeristy of Vicosa, Department of Animal Science, Vicosa, Brazil
Citation
Nutrient requirements of Zebu beef cattle - BR - Corte, 2010, Ed.2, pp 167-185
Abstract

The objective of this work was to evaluate the accuracy of digestion techniques using nitric and perchloric acid at the ratios of 2:1, 3:1, and 4:1 v v-1, in one- or two-step digestion, to estimate chromium contents in cattle feces, using sodium molybdate as a catalyst. Fecal standards containing...

Author(s)
Rocha, G. C.; Palma, M. N. N.; Detmann, E.; Valadares Filho, S. de C.
Publisher
Empresa Brasileira de Pesquisa Agropecuária, Brasilia, Brazil
Citation
Pesquisa Agropecuária Brasileira, 2015, 50, 1, pp 92-95
Abstract

The objective of this study was to propose and discuss a method to evaluate the efficiency of feed conversion into product from beef cattle based on regression techniques. The mathematical and statistical procedures were developed using a database composed of measurements of dry matter intake and...

Author(s)
Detmann, E.; Gionbelli, M. P.; Valadares Filho, S. de C.; Paulino, P. V. R.
Publisher
Sociedade Brasileira de Zootecnia, Viçosa, Brazil
Citation
Revista Brasileira de Zootecnia, 2011, 40, 12, pp 2827-2834
Abstract

The objective of this study was to evaluate the effects of sodium hydroxide concentrations in the distillation stage on the total nitrogen (N) contents of the Kjeldahl method in different materials. Eight samples of different materials were used: four samples with low-N content (sugar cane in...

Author(s)
Rodrigues, A. N.; Silva, T. E.; Detmann, E.
Publisher
Instituto de Zootecnia, Nova Odessa, Brazil
Citation
Boletim de Indústria Animal, 2018, 75, 1, pp 9-16
Abstract

This study aimed to validate the estimates of the ruminal degradation of total carbohydrates (TC), ruminal and total digestion of fibrous carbohydrates (FC) and microbial nitrogen flow in the abomasum evaluated by in vitro gas production technique (IVGP). Six ruminally and abomasally cannulated...

Author(s)
Cabral, L. da S.; Valadares Filho, S. de C.; Detmann, E.; Zervoudakis, J. T.; Galati, R. L.; Sousa, D. de P.; Souza, A. L. de
Publisher
Sociedade Brasileira de Zootecnia, Viçosa, Brazil
Citation
Revista Brasileira de Zootecnia, 2011, 40, 9, pp 1984-1990
Abstract

Two studies were carried out to evaluate individual dry matter intake of group-fed lactating dairy cows. In the first trial, 8 cows were housed in individual pens and fed corn silage and 4 kg of concentrate meal. Two external markers (chromium oxide and titanium dioxide) were used to predict...

Author(s)
Ferreira, M. de A.; Valadares Filho, S. de C.; Costa e Silva, L. F.; Nascimento, F. B.; Detmann, E.; Valadares, R. F. D.
Publisher
Sociedade Brasileira de Zootecnia, Viçosa, Brazil
Citation
Revista Brasileira de Zootecnia, 2009, 38, 8, pp 1574-1580
Abstract

In ruminants, urea recycling is considered an evolutionary advantage. The amount of urea recycled mainly depends of the nitrogen (N) intake and the amount of organic matter (OM) digested in the rumen. Because recycled N contributes to meeting microbial N requirements, accurate estimates of urea...

Author(s)
Batista, E. D.; Detmann, E.; Valadares Filho, S. C.; Titgemeyer, E. C.; Valadares, R. F. D.
Publisher
Cambridge University Press, Cambridge, UK
Citation
Animal, 2017, 11, 8, pp 1303-1311
Abstract

The objective of this work was to use a meta-analytical approach to evaluate the regulation of voluntary intake in cattle fed tropical forage-based diets using dietary digestibility and bulkiness. Treatment mean values were collected from 53 studies with lactating dairy cows and 126 studies with...

Author(s)
Detmann, E.; Gionbelli, M. P.; Huhtanen, P.
Publisher
American Society of Animal Science, Savoy, USA
Citation
Journal of Animal Science, 2014, 92, 10, pp 4632-4641
Abstract

The objective of this study was to estimate the dietary apparent digestible fraction of nonfibre carbohydrates (NFC) using the Lucas test. The dataset contained a total of 167 observations with 57 originated from two trials conducted with lactating cows and 110 from three experiments with growing...

Author(s)
Detmann, E.; Valadares Filho, S. de C.; Henriques, L. T.; Pina, D. dos S.; Paulino, M. F.; Valadares, R. F. D.; Chizzotti, M. L.; Magalhães, K. A.
Publisher
Sociedade Brasileira de Zootecnia, Viçosa, Brazil
Citation
Revista Brasileira de Zootecnia, 2006, 35, 4, pp 1479-1486
AbstractFull Text

The objective of this work was to evaluate combinations between acid digestion techniques and spectrophotometric quantification to measure chromium concentration in cattle feces. Digestion techniques were evaluated based on the use of nitric and perchloric acids, sulfuric and perchloric acids, and...

Author(s)
Souza, N. K. P.; Detmann, E.; Pina, D. S.; Valadares Filho, S. C.; Sampaio, C. B.; Queiroz, A. C.; Veloso, C. M.
Publisher
FEPMVZ - Editora, Belo Horizonte, Brazil
Citation
Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2013, 65, 5, pp 1472-1482

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