2009
DOI: 10.1590/s1516-35982009000700026
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Body composition and energy and protein requirements of grazing Nelore steers

Abstract: -This experiment was carried out with the objective of determining the energy and protein requirements of grazing Nellore steers. Twenty four Nellore steers (average 371 ± 14 kg of BW and 26 months old) were used. Four steers were slaughtered at the beginning of the experiment (reference group), serving as a reference for the subsequent study. The remaining 20 animals were weighed and distributed in a randomized complete block design with four levels of supplementation offers: 0.0 (mineral mixture -control), 0… Show more

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Cited by 2 publications
(2 citation statements)
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“…The participation of RDP in the total CP requirements increased as the BW increased, which thus reduced the need for dietary RUP to meet the total CP requirements. This pattern was found in various other studies (ALMEIDA et al, 2009;PORTO et al, 2012;SILVA et al 2002;SOUZA et al, 2012b) and means that during the finishing stage, the amount of dietary non-protein nitrogen may increase as the animal weight increases (SILVA et al, 2002).…”
Section: Resultssupporting
confidence: 66%
See 1 more Smart Citation
“…The participation of RDP in the total CP requirements increased as the BW increased, which thus reduced the need for dietary RUP to meet the total CP requirements. This pattern was found in various other studies (ALMEIDA et al, 2009;PORTO et al, 2012;SILVA et al 2002;SOUZA et al, 2012b) and means that during the finishing stage, the amount of dietary non-protein nitrogen may increase as the animal weight increases (SILVA et al, 2002).…”
Section: Resultssupporting
confidence: 66%
“…Most of the beef cattle population in Brazil comprises Zebu breeds, which is why most studies evaluate the nutritional requirements of this species (ALMEIDA et al, 2009;BACKES et al, 2005BACKES et al, , 2010COSTA E SILVA et al, 2012;FREITAS et al, 2006;MARCONDES et al, 2011aMARCONDES et al, , 2011bSOUZA et al, 2012aSOUZA et al, , 2012b. However, male cattle raised in dairy farms are also used for meat production; however, their performance is poorer compared with that of Zebu, and thus, many producers prefer to slaughter them as calves.…”
Section: Introductionmentioning
confidence: 99%