Chemical and sensory meat characteristics of Nellore cattle (Bos indicus) finished with different levels of backfat thickness in the longissimus thoracis muscle

Malheiros, Jessica Moraes; Baldassini, Welder Angelo; Dias, Victor Augusto Domingos; Silva, Josineudson Augusto Ii Vasconcelos da; Curi, Rogério Abdallah; Chardulo, Luis Artur Loyola

doi:10.17523/bia.v72n4p341

Cited by 13 publications

(5 citation statements)

References 8 publications

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“…The decrease in the breeding value of animals for carcass fat deposition may represent a problem for Bos indicus beef breeds. In fact, a relationship between the myofibrillar fragmentation index and tenderness, measured as shear force, was described in Nellore carcasses with greater BF compared to those with lower BF, suggesting possible tenderness problems in animals with a leaner carcass [ 24 ]. However, it is well established that the retail beef yield is lower for animals with a greater fat cover in the carcass [ 25 ], suggesting that it is desirable to select animals with moderate but not high breeding values for BF and RF.…”

Section: Discussionmentioning

confidence: 99%

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

et al. 2016

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This study evaluated phenotypic (rph) and genetic correlations (rg) between 8 feed efficiency traits and other traits of economic interest including weight at selection (WS), loin-eye area (LEA), backfat thickness (BF), and rump fat thickness (RF) in Nellore cattle. Feed efficiency traits were gain:feed, residual feed intake (RFI), residual feed intake adjusted for backfat thickness (RFIb) and for backfat and rump fat thickness (RFIsf), residual body weight gain (RG), residual intake and body weight gain (RIG), and residual intake and body weight gain using RFIb (RIGb) and RFIsf (RIGsf). The variance components were estimated by the restricted maximum likelihood method using a two-trait animal model. The heritability estimates (h2) were 0.14, 0.24, 0.20, 0.22, 0.19, 0.15, 0.11 and 0.11 for gain:feed, RFI, RFIb, RFIsf, RG, RIG, RIGb and RIGsf, respectively. All rph values between traits were close to zero, except for the correlation of feed efficiency traits with dry matter intake and average daily gain. High rg values were observed for the correlation of dry matter intake, average daily gain and metabolic weight with WS and hip height (>0.61) and low to medium values (0.15 to 0.48) with the carcass traits (LEA, BF, RF). Among the feed efficiency traits, RG showed the highest rg with WS and hip height (0.34 and 0.25) and the lowest rg with subcutaneous fat thickness (-0.17 to 0.18). The rg values of RFI, RFIb and RFIsf with WS (0.17, 0.23 and 0.22), BF (0.37, 0.33 and 0.33) and RF (0.30, 0.31 and 0.32) were unfavorable. The rg values of gain:feed, RIG, RIGb and RIGsf with WS were low and favorable (0.07 to 0.22), while medium and unfavorable (-0.22 to -0.45) correlations were observed with fat thickness. The inclusion of subcutaneous fat thickness in the models used to calculate RFI did not reduce the rg between these traits. Selecting animals for higher feed efficiency will result in little or no genetic change in growth and will decrease subcutaneous fat thickness in the carcass.

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Section: Discussionmentioning

confidence: 99%

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

et al. 2016

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“…En este sentido, el espesor de grasa dorsal es una medida que guarda relación con la nutrición y alimentación que recibió el animal y con el metabolismo energético del mismo (15), lo que supone que los animales observados en esta investigación recibieron una dieta acorde a sus necesidades energéticas. Sin embargo, el biotipo cebú (Bos indicus) deposita grasa subcutánea más tarde en su vida comparado con el biotipo europeo (Bos taurus) (16), por lo tanto, era de esperar que los animales de este estudio fuesen más magros, dado que eran jóvenes, menores de 25 meses.…”

Section: Discussionunclassified

Evaluación Ecográfica Del Área De Ojo De Lomo Y Espesor De Grasa Dorsal De Novillos Y Toros Cebuanos Mestizos De Ecuador

Burgos-Mayorga

Santos

Guevara³

et al. 2022

reciena

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La producción de carne bovina en Ecuador crece de la mano de las exigencias de los consumidores y para mejorar los rendimientos del sistema de crianza de bovinos de carne es necesario emplear herramientas que entreguen información fiable e inmediata sobre el crecimiento de los animales y la ecografía se presenta como una opción útil para alcanzar este fin. Por lo tanto, en el presente estudio se evaluaron por ecografía 224 bovinos cebuanos mestizos, menores de 25 meses, sobre los que se evaluaron dos características físicas relacionadas con el rendimiento carnicero: área de ojo de lomo y espesor de grasa dorsal. Además, los resultados de la observación fueron comparados con dos variables que se emplean en el país para definir rendimiento al desposte: peso vivo y rendimiento de la canal caliente. Se encontró mucha variabilidad en el grupo estudiado, sin embargo, los valores promedio de área de ojo de lomo (42,84 cm2) y espesor de grasa dorsal (4,8 mm) fueron fácilmente evaluados. Adicionalmente, el análisis de correlación determinó que el área de ojo de lomo guarda relación positiva con el peso vivo (r = 0,69) y el rendimiento de la canal (r = 0,56). Esto sugiere que la medición ecográfica es útil como técnica para la determinación de características relacionadas con el rendimiento carnicero incluso en las condiciones de producción del país.

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“…In an actual prediction, male Bali cattle have carcass quality i.e., back fat thickness 3.08 mm, carcass percentage 53.33%, and marbling score of 2.65 (Suryanto et al 2014). Nellore cattle with a backfat thickness <3 mm had a marbling score of 3.39, while back fat thickness >6 mm had marbling score 3.50 (Malheiros et al 2015). Hanwoo cattle back fat thickness was 10 mm with marbling score 9.55 (Moon et al 2003).…”

Section: Association Of Genotype With Growth and Meat Quality Traitsmentioning

confidence: 98%

Association of SNP g.232 G>T Calpain Gene with Growth and Live Meat Quality Prediction using Ultrasound Images in Bali Cattle

Dairoh¹,

Jakaria²,

Ulum³

et al. 2021

JITV

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Bali cattle (Bos javanicus) are native Indonesian cattle, domesticated from banteng (Bibos banteng). Genes that have an important role in meat quality are calcium-activated neutral protease genes, known as calpains (CAPN). The objective of this study was to evaluate the polymophisms of calpain gene SNP g.232 G>T by PCR-RFLP technique and its influence on growth trait and meat quality of Bali cattle detected by ultrasound imaging of longissimus dorsi thickness (LDT), back fat thickness (BFT), marbling score (MS), and intramuscular fat percentage (PIMF). The polymorphisms of CAPN1 gene were analyzed by PCR-RFLP using BglII restriction enzyme (n=52 cattle). The ultrasound images of longissimus dorsi muscle were carried out transversally and longitudinal between 12th -13th thoracic vertebrae then analyzed by Image-J NIH software. Result showed that SNP g.232 G>T of CAPN1 gene was polymorphic in Bali cattle. SNP g.232 G>T of CAPN1 gene in Bali cattle has higher diversity which was showed of 0.48 heterozygosity value and was in Hardy-Weinberg equilibrium. The polymorphisms of SNP g.232 G>T was associated significantly (P<0.05) with bodyweight at 730 days, marbling score (MS), and intramuscular fat percentage (PIMF). It suggests that the CAPN1 gene in Bali cattle is a candidate for Marker Assisted Selection (MAS), which influences body weight at 730 days, marbling score, and percentage of intramuscular fat.

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Chemical and sensory meat characteristics of Nellore cattle (Bos indicus) finished with different levels of backfat thickness in the longissimus thoracis muscle

Cited by 13 publications

References 8 publications

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

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

Evaluación Ecográfica Del Área De Ojo De Lomo Y Espesor De Grasa Dorsal De Novillos Y Toros Cebuanos Mestizos De Ecuador

Association of SNP g.232 G>T Calpain Gene with Growth and Live Meat Quality Prediction using Ultrasound Images in Bali Cattle

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