Predição de desempenho com uso de sistemas de exigências nutricionais e características de carcaça de tourinhos zebuínos

Ribeiro, Julimar do Sacramento; Ladeira, Márcio Machado; Gonçalves, Tarcisio de Moraes; Whately, Marcelo Alcântara; Bassi, Marcelo Silva

doi:10.1590/s0100-204x2009001200023

Cited by 3 publications

(2 citation statements)

References 9 publications

(6 reference statements)

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“…Lanna et al (1994) compared prediction by the CNCPS 3.0 and NRC (1984) systems for zebu animals and observed that the daily weight gain was underestimated by both systems. Ribeiro et al (2009) researced different zebu genetic groups and observed that neither the NRC (2000) nor the CNCPS 5.0 systems were efficient in predicting Nellore breed performance.…”

Section: Resultsmentioning

confidence: 99%

Performance and carcass traits of Nellore and Red Norte steers finished in feedlot

Neto¹,

Ladeira

Gonçalves

et al. 2011

R. Bras. Zootec.

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-The objective of this work was to evaluate average daily gain (ADG) and carcass traits in Nellore and Red Norte steers, finished in feedlots and to evaluate performance predictions by using the systems BR-CORTE, CNCPS 5.0 and NRC (2000). It was used 41 steers: 19 Nelore animals with initial body weight of 361 ± 31 kg and 22 Red Norte animals with initial body weight of 367 ± 30 kg. Adaptation period lasted 28 days. Animal performance evaluation was composed of three 28 day period, totaling 84 days. At the end of each period, animals were weighed after a 16-hour feeding fast. Average gain weight of Red Norte steers was greater than Nellore breed animals (1.43 vs. 1.81 kg/day, respectively). Red Norte animals also presented greater loin eye area (75.41 cm 2 vs. 68.67 cm 2 ). It was not observed any differences on subcutaneous fat thickness and on rump fat among the genetic groups. None of the nutritional requirement system evaluated were efficient in predicting animal performance. For Nellore breed, daily average gain observed was 1.53kg/day, with values of 1.

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Section: Resultsmentioning

confidence: 99%

Performance and carcass traits of Nellore and Red Norte steers finished in feedlot

Neto¹,

Ladeira

Gonçalves

et al. 2011

R. Bras. Zootec.

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“…As coletas de fezes foram feitas segundo Ribeiro et al (2009) conforme o seguinte procedimento: às 10 h e 18 hora do dia 25, às 08 hora e 16 hora do dia 26 e às 06 hora e 14 hora do dia 27. Estas amostras foram pré-secas em estufa com ventilação forçada a 65 °C por 72 horas e moídas em moinho com peneira de malha de 1 mm, sendo então elaborada uma amostra composta por animal, em cada período, com base no peso seco de cada coleta.…”

Section: Methodsunclassified

Consumo alimentar e sua predição pelos sistemas NRC, CNCPS e BR-Corte, para tourinhos zebuínos confinados

Ribeiro¹,

Ladeira²,

Neto³

et al. 2012

Rev. Ciênc. Agron.

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RESUMO-Objetivou-se avaliar a predição de consumo de matéria seca (CMS) pelos sistemas CNCPS 5.0, NRC e BR-CORTE, bem como o consumo de nutrientes por tourinhos zebuínos confinados. Foram utilizados 44 animais em delineamento experimental inteiramente casualizado, sendo: 19 Nelore PO, 7 Nelore LA, 10 Tabapuã PO e 8 Guzerá PO, com peso vivo inicial médio de 394 ± 39; 348 ± 33; 346 ± 28 e 340 ± 30 kg, respectivamente, e idade inicial média de 13 meses. O período experimental foi de 84 dias. O consumo alimentar individual foi obtido com o uso dos indicadores LIPE®, óxido crômico e fibra em detergente ácido indigestível (FDAi). Para comparação do CMS predito pelos sistemas com o observado utilizouse análise de regressão linear. Os animais Nelore LA apresentaram os menores valores observados para CMS (kg d-1). Ao avaliar o CMS em porcentagem do peso vivo (%PV) e em gramas por quilo de peso vivo metabólico (g kg-1 PM), foi detectada diferença entre os grupos genéticos, sendo que os maiores valores ocorreram para os animais Tabapuã PO e Guzerá PO. Os sistemas NRC, CNCPS 5.0 e o BR-CORTE apresentaram subpredição do CMS. Conclui-se que os sistemas estudados não se mostraram adequados para predizer o consumo de matéria seca em tourinhos zebuínos confinados. Palavras-chave: Alimentação dos animais. Guzerá (Zebu). Nelore (Zebu). Tabapuã (Zebu).

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<b>Carcass characteristics of zebu steers receiving different oleaginous grains</b> - doi: 10.4025/actascianimsci.v35i3.14533

Oliveira

Ladeira

Chizzotti

et al. 2013

Acta Sci. Anim. Sci.

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ABSTRACT. This research aimed to evaluate carcass traits of Zebu steers fed different oleaginous grains. Thirty one 23 months old zebu steers with 365 + 37.5 kg of live weight were used. The diets consisted ofcorn silage and four different concentrates; no additional lipids and three different ground oilseeds sources: soybean, cottonseed and linseed. The diets had concentrate:roughage ratio of 60:40 and were offered ad libitum. The experimental period was of 84 days, preceded by a 28 day adaptation period. The experiment was carried out in a randomized block design and the means were compared by Scott-Knott test at 5% level of probability. The CS inclusion of into the diet decreased (p < 0.05) carcass yield of the animals. The hindquarter was heavier (p < 0.05) with the addition of SB to the diet. The spare ribs had the highest performance (p < 0.05) and outside flat was heavier (p < 0.05) when the animals were submitted to CS and FS diets. The CS addition to the diet improved carcass characteristics.

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Predição de desempenho com uso de sistemas de exigências nutricionais e características de carcaça de tourinhos zebuínos

Cited by 3 publications

References 9 publications

Performance and carcass traits of Nellore and Red Norte steers finished in feedlot

Performance and carcass traits of Nellore and Red Norte steers finished in feedlot

Consumo alimentar e sua predição pelos sistemas NRC, CNCPS e BR-Corte, para tourinhos zebuínos confinados

<b>Carcass characteristics of zebu steers receiving different oleaginous grains</b> - doi: 10.4025/actascianimsci.v35i3.14533

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