Consulta: creatorFacets:"Rotta,Polyana Pizzi"
Registros recuperados: 3
Data/hora: 10/06/2024 06:48:29

Energy and protein nutritional requirements for Nellore bulls
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Silva,Luiz Fernando Costa e; Valadares Filho,Sebastião de Campos; Zanetti,Diego; Rotta,Polyana Pizzi; Marcondes,Marcos Inácio; Prados,Laura Franco; Paulino,Mário Fonseca; Azevedo,Henrique de Oliveira.
The objective of this study was to determine the nutritional requirements of energy and protein and estimate the efficiencies of metabolizable energy utilization for fat and protein deposition, as well as for maintenance (k m) and growth (k g). An experiment of comparative slaughter was carried out with thirty-seven 14-month-old (±1 month) Nellore bulls with 259±24.9 kg. Animals were divided as follows: five to reference, four to maintenance level and twenty-eight bulls feeding ad libitum. Bulls were also grouped in 4 different feedlot periods (42, 84, 126 and 168 days) for slaughter. The diet was composed of corn silage and concentrate, at a 55:45 ratio. After the slaughter, the left half carcasses were totally dissected for determination of body...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Deposition; Efficiency; Growth; Maintenance; Metabolizable energy.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000600028

Creatinine excretion and relationship with body weight of Nellore cattle
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Silva,Luiz Fernando Costa e; Valadares Filho,Sebastião de Campos; Chizzotti,Mário Luiz; Rotta,Polyana Pizzi; Prados,Laura Franco; Valadares,Rilene Ferreira Diniz; Zanetti,Diego; Braga,Jercyane Maria da Silva.
The objective of this study was to estimate the urinary creatinine excretion by the shrunk body weight (SBW). In experiment I, 32 Nellore bulls with initial body weight of 259±24.9 kg and 14±1 months-old were used. The group was divided in four animals to maintenance and twenty eight animals feeding ad libitum and separated in four groups; each group was slaughtered at different times of feedlot (42, 84, 126 and 168 days). The diet was composed of corn silage and concentrate (55:45). Before the slaughters, the total urinary collection was realized during three days. A database of creatinine excretion was collected from other five studies that had been conducted with Nellore cattle. In all the studies, the total urinary collection was realized during at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crude protein; Muscle tissue; Total collection; Urine.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000300046

Carcass characteristics, chemical composition and fatty acid profile of longissimus muscle of young bulls from four genetic groups finished in feedlot
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Ito,Roberto Haruyoshi; Prado,Ivanor Nunes do; Rotta,Polyana Pizzi; Oliveira,Marival Gustavo de; Prado,Rodolpho Martin do; Moletta,José Luiz.
This experiment was carried out to evaluate the carcass characteristics, chemical composition and fatty acid profile of the longissimus muscle of 32 young bulls from four genetic groups: Caracu; Canchin; Aberdeen Angus × Canchin; and Charolais × Caracu, finished in feedlot and slaughtered at 22 months old. Each group was composed of eight animals. There was no difference for moisture, ash, crude protein or total cholesterol between bulls from different genetic groups. However, total lipids percentage was higher for bulls from Caracu and Aberdeen Angus × Canchin and lower for Canchin and Charolais genetic groups. Polyunsaturated fattty acids and n-6 percentage was higher for Canchin and lower for Caracu, Aberdeen Angus × Canchin and Charolais genetic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canchin; Caracu; Total cholesterol; Total lipids.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000200022