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Abstract

This chapter describes the techniques and equations used in predicting the body and carcass chemical composition of purebred and crossbred Nelore and zebu cattle. Focus is given on the use of bovine carcass cuts (9-10-11th rib cut or RIB9-11), prediction of the empty body mineral composition and...

Author(s)
Marcondes, M. I.; Paulino, P. V. R.; Valadares Filho, S. de C.; Gionbelli, M. P.; Costa e Silva, L. F.
Publisher
Federal Univeristy of Vicosa, Department of Animal Science, Vicosa, Brazil
Citation
Nutrient requirements of Zebu beef cattle - BR - Corte, 2010, Ed.2, pp 61-79
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

Eighty-seven Nellore animals were utilized in this study to estimate net requirements for the maintenance and growth of beef cattle as well as the retention coefficients of 13 minerals: macrominerals (Ca, P, Mg, K, Na, and S) and trace elements (Cu, Fe, Mn, Se, Zn, Co, and Cr). The net requirements ...

Author(s)
Costa e Silva, L. F.; Valadares Filho, S. de C.; Engle, T. E.; Rotta, P. P.; Marcondes, M. I.; Silva, F. A. S.; Martins, E. C.; Tokunaga, A. T.
Publisher
Public Library of Sciences (PLoS), San Francisco, USA
Citation
PLoS ONE, 2015, 10, 12, pp e0144464
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

This chapter discusses some of the techniques used to evaluate the feed proteins, methods for identifying the microbial crude protein synthesized in the rumen and factors affecting the ruminal microbial crude protein synthesis.

Author(s)
Valadares Filho, S. de C.; Pina, D. dos S.; Chizzotti, M. L.; Valadares, R. F. D.
Publisher
Federal Univeristy of Vicosa, Department of Animal Science, Vicosa, Brazil
Citation
Nutrient requirements of Zebu beef cattle - BR - Corte, 2010, Ed.2, pp 13-44
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

Four experiments were carried out to determine urinary creatinine excretion in Holstein growing bulls, lactating cows, and replacement heifers. In addition, we evaluated the use of spot sampling technique to estimate purine derivatives (PD) excretion. In Experiment I, 15 lactating cows were used in ...

Author(s)
Chizzotti, M. L.; Valadares Filho, S. de C.; Valadares, R. F. D.; Chizzotti, F. H. M.; Tedeschi, L. O.
Publisher
Elsevier, Amsterdam, Netherlands
Citation
Livestock Science, 2008, 113, 2/3, pp 218-225
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

The effect of four dietary urea levels (0, 0.65, 1.3 and 1.95% DM) on the microbial protein production by means of urinary purine derivatives was evaluated using two collection methodologies in steers of four genetic groups: Holstein, 1/2 Holstein-Guzera, 1/2 Holstein-Gir and Zebu. The animals were ...

Author(s)
Rennó, L. N.; Valadares Filho, S. de C.; Valadares, R. F. D.; Paulino, M. F.; Rennó, F. P.; Silva, P. A.
Publisher
Sociedade Brasileira de Zootecnia, Viçosa, Brazil
Citation
Revista Brasileira de Zootecnia, 2008, 37, 3, pp 546-555

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