Características de carcaça de bovinos Nelore e Caracu selecionados para peso aos 378 dias de idade recebendo alimentação restrita ou à vontade

Júnior, Antonio Gesualdi; Queiróz, Augusto César de; Resende, Flávio Dutra de; Alleoni, Guilherme Fernando; Razook, Alexander George; Figueiredo, Leopoldo Andrade de; Gesualdi, Ana Cristina Ladeira de Souza; Detmann, Edênio

doi:10.1590/s1516-35982006000100017

Cited by 6 publications

(2 citation statements)

References 8 publications

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“…We used the individual data collected from the appendix of five theses (Alves 2001;Veloso 2001;Gesualdi Junior 2003;Paulino 2006;Chizzotti 2007), all carried out using continuous designs. A total of 160 cattle was used in the present study, and the variables analyzed were dry matter intake, weight gain, and body weight of the animals.…”

Section: Methodsmentioning

confidence: 99%

Application of the multivariate and univariate analyses to estimate the feed efficiency in beef cattle

Oliveira

Silva²,

Aniceto³

et al. 2023

Biosci. J.

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This study aimed to compare the univariate analyses (relationship between dry matter intake (DMI) and average daily gain (ADG), Kleiber ratio, and residual feed intake) and multivariate analysis (bionutritional index [BNI]) to determine feed efficiency. Were used a total of 160 cattle (individual data) and the analyzed variables were dry matter intake, weight gain, and body weight of the animals. We used five methods to evaluate feed efficiency, the BNI, FE, corrected feeding efficiency (corFE), Kleiber ratio (KR), and residual feed intake (RFI). Study 1 demonstrated that only the FE (p=0.0472) was significant, although the FE after the transformation of Box-Cox (corFE) (p=0.0642) showed a statistical trend. In studies 2, 3, and 5, we observed that BNI was the best biological efficiency indicator. In the study 4, we observed that the best indicators were FE (0.110; p=0.0281), corFE (0.380; p=0.0429), and RFI (0.465; p=0.0340) for the genders. However, corFE decreased the coefficient of variation in all studies. In conclusion, the use of the Box-Cox transformation is as efficient as the multivariate analysis in discriminating experimental groups (genetic groups, different levels of concentrate in the diet, and genders) concerning the other univariate analyzes.

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Section: Methodsmentioning

confidence: 99%

Application of the multivariate and univariate analyses to estimate the feed efficiency in beef cattle

Oliveira

Silva²,

Aniceto³

et al. 2023

Biosci. J.

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show abstract

“…The most important trait to carcass composition measurement is the Longissimus muscle area (LMA), which indicates the muscle amount, composition and noble cuts (GESUALDI JÚNIOR, et al, 2006). Other traits applied as carcass quality indicator are back fat thickness (BF) and rump fat thickness (RF), which are related to products quality, playing a key role in reducing the cold shortening, during carcass cooling processes, directly influencing the production system progress (CAETANO et al, 2013).…”

Section: Carcass Traits Obtained By Ultrasoundmentioning

confidence: 99%

Genomic selection and genome-wide association study with carcass composition indicator traits in Nellore cattle

Silva¹

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Composição corporal e exigências nutricionais de macrominerais de bovinos Caracu selecionados e Nelore selecionados ou não para peso ao sobreano

Miranda¹,

Queiróz

Lana

et al. 2006

R. Bras. Zootec.

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RESUMO -Avaliaram-se a composição corporal e as exigências líquidas e dietéticas de macrominerais (Ca, P, Mg, Na e K) de bovinos Caracu selecionados (CaS) e Nelore selecionados (NeS) ou não (NeC) para peso ao sobreano (378 dias de idade).Foram utilizados 56 tourinhos com média de 18 meses de idade. Doze animais foram abatidos após o período de adaptação para servirem como referência e os 44 restantes (16 NeS, 16 CaS e 12 NeC, com peso vivo inicial de 392±15,7; 421±14,4 e 337±18,5 kg, respectivamente) foram distribuídos em delineamento inteiramente casualizado, em esquema fatorial 3 x 2: grupo genético (NeS, CaS e NeC) x sistema de alimentação (restrito e ad libitum). A dieta, com relação volumoso:concentrado de 50:50, continha silagem de milho como volumoso. Os conteúdos dos macrominerais retidos no corpo dos animais foram estimados por meio de equações de regressão do logaritmo do conteúdo corporal de Ca, P, Mg, Na e K, em função do logaritmo do peso de corpo vazio (PCVZ). As exigências líquidas para ganho de 1 kg de PCVZ foram obtidas pela derivação das equações de predição dos conteúdos corporais dos macrominerais, em função do logaritmo do PCVZ. Houve efeito do grupo genético sobre o conteúdo corporal dos macroelementos. As concentrações corporais e as exigências de todos os macrominerais aumentaram conforme a elevação no PCVZ dos animais.Palavras-chave: bovino de corte, cálcio, fósforo, potássio, sódio Body composition and nutritional requirements of macrominerals of genetically selected Caracu and Nellore and ordinary Nellore young bulls ABSTRACT -Body composition and net and dietary requirements of macrominerals (Ca, P, Mg, Na and K) of genetically selected Caracu (CaS) and Nellore (NeS) for yearling weight (378 days of age) as well as of ordinary Nellore (control; NeC) were investigated in this trial. Fifty-six young bulls averaging 18 months of age were used. Twelve animals were slaughtered after an adaptation period and were used as reference. The 44 remaining animals, 16 NeS, 16 CaS and 12 NeC, with initial average body weight (BW) of 392, 421 and 337 kg, respectively, were distributed to a completely randomized design in a 3 x 2 factorial arrangement (genetic group [NeS, CaS and NeC] and feeding regime [restricted and ad libitum]). Animals were fed a diet with a 50:50 forage (corn silage):concentrate ratio and were slaughtered after reach 4 mm of subcutaneous fat thickness measured by ultrasound. After slaughter, body parts of all animals were weighed and sampled. Samples were then freeze-dried, treated with ether to remove fat, ground and contents of macrominerals determined. Estimation of body retained macrominerals were done by regressing the logarithm of Ca, P, Mg, Na and K body content on the logarithm of empty body weight (EBW). Net macrominerals requirements for 1 kg of EBW gain were obtained by derivation of the prediction equations. There was a significant effect of genetic group on the body content of the studied macrominerals. Body contents and requirements of all macrominerals followed EB...

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Características de carcaça de bovinos Nelore e Caracu selecionados para peso aos 378 dias de idade recebendo alimentação restrita ou à vontade

Cited by 6 publications

References 8 publications

Application of the multivariate and univariate analyses to estimate the feed efficiency in beef cattle

Application of the multivariate and univariate analyses to estimate the feed efficiency in beef cattle

Genomic selection and genome-wide association study with carcass composition indicator traits in Nellore cattle

Composição corporal e exigências nutricionais de macrominerais de bovinos Caracu selecionados e Nelore selecionados ou não para peso ao sobreano

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