Economic values of reproductive, growth, feed efficiency and carcass traits in Nellore cattle

2021 ◽  
Author(s):  
Flávia M. Souza ◽  
Fernando B. Lopes ◽  
Guilherme J. M. Rosa ◽  
Cláudio U. Magnabosco
Keyword(s):  
Feed Efficiency ◽  
Carcass Traits ◽  
Reproductive Growth ◽  
Economic Values ◽  
Nellore Cattle

scholarly journals Phenotypic and Genetic Correlations of Feed Efficiency Traits with Growth and Carcass Traits in Nellore Cattle Selected for Postweaning Weight

PLoS ONE ◽  
2016 ◽  
Vol 11 (8) ◽  
pp. e0161366 ◽  
Author(s):  
Thais Matos Ceacero ◽  
Maria Eugênia Zerlotti Mercadante ◽  
Joslaine Noely dos Santos Gonçalves Cyrillo ◽  
Roberta Carrilho Canesin ◽  
Sarah Figueiredo Martins Bonilha ◽  
...  
Keyword(s):  
Feed Efficiency ◽  
Carcass Traits ◽  
Genetic Correlations ◽  
Nellore Cattle

Selection for feed efficiency does not change the selection for growth and carcass traits in Nellore cattle

2019 ◽  
Vol 136 (6) ◽  
pp. 464-473
Author(s):  
Giovanna Faria Moraes ◽  
Luíza Rodrigues Alves Abreu ◽  
Fabio Luiz Buranelo Toral ◽  
Isabel Cristina Ferreira ◽  
Henrique Torres Ventura ◽  
...  
Keyword(s):  
Feed Efficiency ◽  
Carcass Traits ◽  
Nellore Cattle ◽  
Selection For

scholarly journals Correlations of visual scores, carcass traits, feed efficiency and retail product yield in Nellore cattle

2014 ◽  
Vol 71 (1) ◽  
pp. 17-22 ◽  
Author(s):  
Paulo Henrique Cancian ◽  
Rodrigo da Costa Gomes ◽  
Fernando Ricardo Manicardi ◽  
Andrea Cristina Ianni ◽  
Marina de Nadai Bonin ◽  
...  
Keyword(s):  
Feed Efficiency ◽  
Carcass Traits ◽  
Product Yield ◽  
Nellore Cattle

scholarly journals Feedlot performance, feed efficiency and carcass traits in Nellore cattle selected for postweaning weight

2013 ◽  
Vol 42 (2) ◽  
pp. 125-129 ◽  
Author(s):  
Tatiana Lucila Sobrinho ◽  
Sarah Figueiredo Martins Bonilha ◽  
Heraldo Cesar Gonçalves ◽  
André Michel de Castilhos ◽  
Elaine Magnani ◽  
...  
Keyword(s):  
Feed Efficiency ◽  
Carcass Traits ◽  
Feedlot Performance ◽  
Nellore Cattle

scholarly journals Effect of dietary protein content on performance, feed efficiency and carcass traits of feedlot Nellore and Angus × Nellore cross cattle at different growth stages

2018 ◽  
Vol 156 (1) ◽  
pp. 110-117 ◽  
Author(s):  
P. M. Amaral ◽  
L. D. S. Mariz ◽  
D. Zanetti ◽  
L. F. Prados ◽  
M. I. Marcondes ◽  
...  
Keyword(s):  
Feed Efficiency ◽  
Average Daily Gain ◽  
Carcass Traits ◽  
Subcutaneous Fat ◽  
Experimental Period ◽  
Growth Stages ◽  
Linear Effect ◽  
Randomized Design ◽  
Nellore Cattle ◽  
Two Stages

AbstractAn experiment was conducted to evaluate whether a reduction in dietary crude protein (CP) and genotype affects animal performance, feed efficiency and carcass traits of beef cattle at different stages of the feedlot. Twenty-two Nellore and 22 crossbred F1 Angus × Nellore (Nellore: 8 months, initial body weight (iBW) = 212.7 kg; Crossbred: 8 months, iBW = 226.1 kg) were used in this experiment. The experiment was conducted in a complete randomized design with six replicates, in a 2 × 3 factorial design. The factors were two genotypes (Nellore and Crossbred) and three CP concentrations (100, 120 and 140 g/kg dry matter [DM]). The experimental period lasted 224 day, being divided into two stages (Backgrounding = 112 day, and Finishing = 112 day). At the end of the experiment, all animals were slaughtered to evaluate their carcass characteristics. Similar patterns were observed during backgrounding and finishing phases on intake and average daily gain (ADG) regarding genotype. Intakes of DM, organic matter, CP, neutral detergent fibre, non-fibre carbohydrates and total digestible nutrients, ADG (kg/day) and feed efficiency were greater in Crossbred animals than Nellore in both phases. During the backgrounding phase, dietary CP did not influence DM intake. However, a linear effect of CP on ADG was observed in the backgrounding phase. During finishing, Nellore cattle fed 100 g CP/kg DM presented lower ADG than Nellore fed 120 and 140 g CP/kg DM. Crossbred animals were heavier than Nellore at the beginning and end of the trial. Crossbred animals also gained more carcass, retained more CP and fat, and had a greater subcutaneous fat thickness during the experiment compared with Nellore. There was a quadratic effect of dietary CP on retained CP and dressing. The current study found that crossbred animals (F1 Angus × Nellore) not only had greater performance, but also better carcass traits compared with Nellore, representing an option for increasing productivity. Also, it is possible to adjust diets according to phase. During the backgrounding stage, 140 g CP/kg DM should be used, being reduced to 120 g CP/kg DM during the finishing stage of feedlot for Nellore and to 100 g CP/kg DM for Crossbred, without affecting performance adversely.

scholarly journals 275 Phenotypic relationships between heart score and feed efficiency, carcass, and pulmonary arterial pressure traits

2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 204-205
Author(s):  
Kathryn R Heffernan ◽  
Scott Speidel ◽  
Milt Thomas ◽  
Mark Enns ◽  
Tim Holt
Keyword(s):  
Arterial Pressure ◽  
Feed Efficiency ◽  
Pulmonary Arterial Pressure ◽  
Carcass Traits ◽  
Multiple Linear Regression Model ◽  
Strong Relationship ◽  
Fixed Effect ◽  
Heart Score ◽  
Important Relationship ◽  
Pulmonary Arterial

Abstract Pulmonary hypertension (PH) can lead to premature mortality in fed cattle and is often called Feedlot Heart Disease (FHD). To date, pulmonary arterial pressure (PAP) has been the only indicator trait of PH that has been evaluated. The objective of this study was to evaluate relationships between heart score (using heart score as a phenotype for PH) and PAP, carcass, and feed efficiency traits in fattening Angus steers. Our hypothesis was that feed efficiency and carcass traits, along with PAP, would demonstrate a strong relationship with heart score. Feed efficiency, carcass, PAP and heart score data from 89 Black Angus steers from Colorado State University Beef Improvement Center were collected and used for this study. Evaluations were performed using a multiple linear regression model, which included heart score as a categorical fixed effect and age as a continuous fixed effect. Least Square Means, pairwise comparisons, and ANOVA tables were constructed per trait. PAP (P < 0.001) showed an important relationship to heart score and average dry matter (P < 0.10) intake approached importance to heart score. In general, feed efficiency and carcass traits decreased as heart score increased, but PAP was the only trait with a strong relationship to heart score (P < 0.05). This led us to reject our hypothesis.

scholarly journals Circulating leptin and its muscle gene expression in Nellore cattle with divergent feed efficiency

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Lúcio Flávio Macedo Mota ◽  
Cristina Moreira Bonafé ◽  
Pâmela Almeida Alexandre ◽  
Miguel Henrique Santana ◽  
Francisco José Novais ◽  
...  
Keyword(s):  
Gene Expression ◽  
Feed Efficiency ◽  
Muscle Gene Expression ◽  
Nellore Cattle ◽  
Muscle Gene
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