scholarly journals Gene co-expression networks associated with carcass traits reveal new pathways for muscle and fat deposition in Nelore cattle

BMC Genomics ◽  
2019 ◽  
Vol 20 (1) ◽  
Author(s):  
Bárbara Silva-Vignato ◽  
Luiz L. Coutinho ◽  
Mirele D. Poleti ◽  
Aline S. M. Cesar ◽  
Cristina T. Moncau ◽  
...  
Keyword(s):  
Carcass Traits ◽  
Fat Deposition ◽  
Nelore Cattle

Quantitative study of genetic gain for growth, carcass, and morphological traits of Nelore cattle

2019 ◽  
Vol 99 (2) ◽  
pp. 296-306
Author(s):  
Daniel Duarte da Silveira ◽  
Lucas De Vargas ◽  
Rodrigo Junqueira Pereira ◽  
Gabriel Soares Campos ◽  
Ricardo Zambarda Vaz ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Carcass Traits ◽  
Genetic Correlations ◽  
Correlated Response ◽  
Genetic Associations ◽  
Muscle Area ◽  
Genetic Gains ◽  
Fat Thickness ◽  
Nelore Cattle ◽  
Genetic Trends

The aim of this study was to evaluate the genetic variability, genetic and phenotypic associations, and genetic gains of birth (BW), weaning (WW), and yearling (YW) weights, loin muscle area (LMA), backfat thickness (BF), rump fat thickness (RF), scores of body structure (BS), finishing precocity (FS), and muscling (MS) in Nelore cattle. Genetic parameters were obtained through Bayesian inference using BLUPF90 programs. All studied traits showed genetic variability, with heritability ranging from 0.29 to 0.47. In all studied ages, weights presented positive genetic correlations with LMA (ranging from 0.13 to 0.53), being generally stronger in comparison with the other carcass traits analyzed (BF and RF). Similarly, weights were higher genetic associated with BS (0.47–0.92) than with FS (0.18–0.62) and MS (0.22–0.65), respectively. The BF and RF showed positive and moderate genetic associations with FS and MS (0.31–0.36). Genetic trends were significant (P < 0.05) and favorable for WW, YW, and visual scores. Selection for increasing BW, WW, YW, and LMA will result in modest or no change in BF and RF (correlated response ranging from −0.04 to 0.07 mm per generation). In this population, carcass traits must be included in the selection indexes to obtain genetic gains in carcass quality, if desired.

Effect of zeranol on fat deposition and carcass traits in beef heifers

1992 ◽  
Vol 72 (4) ◽  
pp. 965-968 ◽  
Author(s):  
B. D. King ◽  
R. D. Bergen ◽  
J. J. McKinnon ◽  
R. D. H. Cohen ◽  
R. N. Kirkwood
Keyword(s):  
Key Words ◽  
Carcass Traits ◽  
Fat Deposition ◽  
Carcass Weight ◽  
Beef Heifers ◽  
Marbling Score ◽  
Meat Yield ◽  
Lean Meat ◽  
Beef Heifer

Non-pregnant beef heifers implanted with zeranol at birth and at 100 and 200 d of age were fed a finishing ration for 78 d to slaughter at 21–22 mo of age. Rate of fat deposition, grade fat and marbling score were less (P < 0.05) and carcass weight, rib-eye area and lean-meat yield were greater (P < 0.05) for implanted heifers than for non-implanted heifers. Key words: Zeranol, ultrasound, fat deposition, carcass, beef heifer

scholarly journals Carcass traits of sheep fed banana pseudostem hay

2019 ◽  
Vol 40 (6) ◽  
pp. 2795
Author(s):  
José Assunção Silveira Junior ◽  
Márcio dos Santos Pedreira ◽  
Christian Albert Carvalho da Cruz ◽  
Cristiane Leal dos Santos-Cruz ◽  
Cláudio Eduardo Silva Freitas ◽  
...  
Keyword(s):  
Carcass Traits ◽  
Fat Deposition ◽  
Carcass Yield ◽  
Orthogonal Contrasts ◽  
Randomized Design ◽  
Mesenteric Fat ◽  
Grass Hay ◽  
Completely Randomized Design ◽  
Average Body ◽  
Average Body Weight

The objective of this study was to evaluate carcass yield, measurements, cuts, and fat deposition of sheep fed banana pseudostem hay and Tifton 85 grass hay, with or without virginiamycin. Thirty-three uncastrated male Dorper × Santa Ines crossbred lambs at five months of age, with an average body weight of 25.00 ± 1.95 kg, were used in a feedlot experiment. The following four diets were evaluated: Tifton 85 grass hay plus concentrate with virginiamycin, banana pseudostem hay replacing 60% of Tifton 85 grass hay plus concentrate with virginiamycin, Tifton 85 grass hay plus concentrate without virginiamycin, and banana pseudostem hay replacing 60% of Tifton 85 grass hay plus concentrate without virginiamycin. The experiment was set in a completely randomized design, in a factorial scheme, using orthogonal contrasts. The diet replacing 60% Tifton 85 grass hay by banana pseudostem hay without virginiamycin had no effect on carcass traits. The combination of virginiamycin and Tifton 85 grass hay provided increases in warm carcass weight, warm carcass yield, spine, omental and mesenteric fat deposition, and, regardless of roughage, increases in the thoracic perimeter.

Genetic analysis of growth, visual scores, height, and carcass traits in Nelore cattle

2021 ◽  
Vol 92 (1) ◽  
Author(s):  
Daniel Duarte Silveira ◽  
Patrícia Iana Schmidt ◽  
Gabriel Soares Campos ◽  
Lucas Vargas ◽  
Fabio Ricardo Pablos Souza ◽  
...  
Keyword(s):  
Genetic Analysis ◽  
Carcass Traits ◽  
Nelore Cattle

Supplementation Dietary Zinc Levels on Growth Performance, Carcass Traits, and Intramuscular Fat Deposition in Weaned Piglets

2014 ◽  
Vol 161 (1) ◽  
pp. 69-77 ◽  
Author(s):  
H. B. Zhang ◽  
M. S. Wang ◽  
Z. S. Wang ◽  
A. M. Zhou ◽  
X. M. Zhang ◽  
...  
Keyword(s):  
Growth Performance ◽  
Carcass Traits ◽  
Intramuscular Fat ◽  
Fat Deposition ◽  
Weaned Piglets ◽  
Dietary Zinc ◽  
Zinc Levels

scholarly journals Association of ADIPOQ , OLR1 and PPARGC1A gene polymorphisms with growth and carcass traits in Nelore cattle

Meta Gene ◽  
2015 ◽  
Vol 4 ◽  
pp. 1-7 ◽  
Author(s):  
Patrícia D. da S. Fonseca ◽  
Fábio R.P. de Souza ◽  
Gregório M.F. de Camargo ◽  
Fernanda M.M. Gil ◽  
Diercles F. Cardoso ◽  
...  
Keyword(s):  
Gene Polymorphisms ◽  
Carcass Traits ◽  
Nelore Cattle

scholarly journals Association of the A-G Polymorphism in Porcine Adiponectin Gene with Fat Deposition and Carcass Traits

2006 ◽  
Vol 19 (6) ◽  
pp. 779-783 ◽  
Author(s):  
L. H. Dai ◽  
Y. Z. Xiong ◽  
C. Y. Deng ◽  
S. W. Jiang ◽  
B. Zuo ◽  
...  
Keyword(s):  
Carcass Traits ◽  
Fat Deposition ◽  
Adiponectin Gene

Castration methods in crossbred cattle raised on tropical pasture

2018 ◽  
Vol 58 (7) ◽  
pp. 1307 ◽  
Author(s):  
Aline D. Moreira ◽  
Gustavo R. Siqueira ◽  
Josiane F. Lage ◽  
João Marcos B. Benatti ◽  
Matheus H. Moretti ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Average Daily Gain ◽  
Carcass Traits ◽  
Serum Testosterone ◽  
Fat Deposition ◽  
Drip Loss ◽  
Tropical Pasture ◽  
Crossbred Cattle ◽  
Scrotal Circumference ◽  
Daily Gain

The aim of this study was to evaluate the effects of castration methods (surgical or immunological – GnRH vaccine) on performance and carcass traits of beef cattle raised until slaughter on tropical pasture. On Day 0, 30 crossbred beef bulls (50% Aberdeen Angus × 50% Nellore) with a bodyweight (BW) of 233 ± 38 kg and age of 8 months were randomly divided into three groups: intact males (INT) – Control, surgically castrated (SUC; Day 1), and immunocastrated (IMC; Days 1, 84 and 237). Serum testosterone concentrations, scrotal circumference, average daily gain, and ultrasonic backfat depth were evaluated at 42-day intervals (eight evaluations). All animals were slaughtered for the evaluation of carcass traits on Day 336. The GnRH vaccine was efficient in suppressing serum testosterone concentrations (P = 0.02) and scrotal circumference (P < 0.01). No difference in performance was observed between IMC and SUC animals, in which average daily gain was reduced by 14% (P < 0.01) and final BW by 7% (P < 0.01) compared with the INT group. Regardless of the method used, castration improved carcass traits by reducing carcass drip loss during cooling (P = 0.02), by increasing hindquarter percentage (P < 0.01), and by tending to increase the proportion of noble cuts (P = 0.05) compared with the INT group. However, the surgical method was more efficient than the other treatments by increasing fat deposition in the carcass (P < 0.01). Anti-GnRH immunisation in beef cattle raised on tropical pasture can replace surgical castration, but both methods reduce performance. However, in this production system, castration could be an efficient method to add value to the carcass by increasing the hindquarter proportion and fat deposition.

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