Genetic Relationships between Body Measurements of Heifers and Carcass Traits of Fattening Cattle in Japanese Black

Mukai, Fumio; Okanishi, Takeshi; Yoshimura, Toyonobu

doi:10.2508/chikusan.64.865

Cited by 7 publications

(10 citation statements)

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“…The estimated heritabilities for body traits of height, length, width and circumference of the back parts (HH, RL, HW, TW, PBW and HG) were higher than those of the front parts (WH, CD, BL, CW and CC), except for HG at 0-mo and for HH and HG at 4-mo. The estimates of WH at 0-mo and 4-mo (0.62 and 0.54, respectively) were higher than the estimate of 0.45 for animals 14-29 months of age reported by Baco et al (1998) and the estimate of 0.45 for those 14-30 months of age reported by Mukai et al (1993). The estimated heritabilities for RL, TW and HG were higher than the estimates of 0.39, 0.34 and 0.33, respectively, reported by Baco et al (1998).…”

Section: Resultscontrasting

confidence: 65%

“…Those of WH with HH, CW with HG, and HG with BW at 0‐mo were higher than 0.95, indicating the possibility that inclusion of these traits may lead to the improvement of the overall size of the body. Those of WH and CD were 0.81 and 0.91 at 0‐mo and 4‐mo, respectively, and higher than the 0.62 and 0.68 reported by Mukai et al . (1993) and Baco et al .…”

Section: Resultscontrasting

confidence: 64%

“…The estimates of WH at 0‐mo and 4‐mo (0.62 and 0.54, respectively) were higher than the estimate of 0.45 for animals 14–29 months of age reported by Baco et al . (1998) and the estimate of 0.45 for those 14–30 months of age reported by Mukai et al . (1993).…”

Section: Resultsmentioning

confidence: 68%

“…(1998). Those of WH with TW (0.45) and CD with TW (0.28) reported by Mukai et al . (1993), were lower than the present estimates at 0‐mo and 4‐mo.…”

Section: Resultsmentioning

confidence: 69%

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Genetic variability of maternal effect on body measurements and its intra‐ and inter‐genetic relationship with direct effect in Japanese Black calves

Munim

Oikawa

Ibi

et al. 2011

Animal Science Journal

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This study was conducted to evaluate the importance of maternal effect on body measurement traits at an early stage of growth, and to estimate the genetic relationships between direct and maternal effects and among body measurement traits at 0 month (0-mo) and 4 months (4-mo) of age in a population of Japanese Black calves. Body measurements and body weight of 889 Japanese Black calves were estimated with the use of an animal model by the Residual Maximum Likelihood procedure. Direct heritabilities were low to moderate, ranging between 0.17 ± 0.09 and 0.48 ± 0.13 at 0-mo, and slightly lower, ranging between 0.15 ± 0.07 and 0.33 ± 0.13 at 4-mo. Estimated maternal heritabilities were low to moderate, ranging between 0.08 ± 0.07 and 0.33 ± 0.07 at 0-mo and 0.13 ± 0.06 to 0.33 ± 0.06 at 4-mo. The direct genetic correlations between 0-mo and 4-mo were moderate to highly positive, ranging from 0.53 ± 0.23 to 0.96 ± 0.09. The estimated direct genetic correlation of chest width with other width traits was low and positive at both ages, whereas with hip width it was high and positive (0.80 ± 0.09) at 0-mo, suggesting that simultaneous improvement of body width of the front and back parts is possible. Maternal genetic effects were relatively independent of direct genetic effects for body measurement traits and can be considered in genetic evaluation.

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Section: Resultscontrasting

confidence: 65%

Section: Resultscontrasting

confidence: 64%

Section: Resultsmentioning

confidence: 68%

“…(1998). Those of WH with TW (0.45) and CD with TW (0.28) reported by Mukai et al . (1993), were lower than the present estimates at 0‐mo and 4‐mo.…”

Section: Resultsmentioning

confidence: 69%

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Genetic variability of maternal effect on body measurements and its intra‐ and inter‐genetic relationship with direct effect in Japanese Black calves

Munim

Oikawa

Ibi

et al. 2011

Animal Science Journal

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“…Entretanto, as estimativas obtidas em raças puras não são necessariamente comparáveis às obtidas em resultados de Tabela 7 -Médias de mínimos quadrados e erros padrão (MQM ± EP), coeficientes de determinação (R 2 ) e coeficientes de variação (CV) para as características morfológicas mensuradas em vacas Zebus cruzamentos, como os do presente trabalho. Profundidade torácica apresentou coeficientes de herdabilidade muito baixos (0,09 pelos dois méto-dos), sendo esse valor menor que os relatados por MUKAI et al (1993) para fêmeas da raça Japanese Black, de 0,19 (profundidade torácica) e 0,14 (circunferência torácica) estimadas pelo método REML, e menores ainda que 0,42 (profundidade corporal em fême-Tabela 8 -Médias de mínimos quadrados e erros padrão (MQM ± EP), coeficientes de determinação (R 2 ) e coeficientes de variação (CV) para as características morfológicas mensuradas em novilhas F 1 Holandês x Zebu Tabela 9 -Coeficientes de herdabilidade (h 2 ) e erros padrão (EP) de características morfológicas estimados por dois métodos (regressão filha-mãe e REML), coeficientes de determinação (R 2 ) e coeficientes de variação (CV) observados nas análises de regressão filha-mãe …”

Section: Coeficientes De Herdabilidadeunclassified

Diferenças genéticas e estimação de coeficientes de herdabilidade para características morfológicas em fêmeas zebus e F1 holandês x zebu

Mourão

Bergmann²,

Madalena³

et al. 1999

R. Bras. Zootec.

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O objetivo deste trabalho foi averiguar possíveis variações nas mensurações morfológicas entre reprodutrizes zebus dos grupos genéticos (GG) Indubrasil, Nelore e Tabapuã e entre os GG de suas filhas F1 Holandês x Indubrasil (HxI), Holandês x Nelore (HxN) e Holandês x Tabapuã (HxT), além de estimar coeficientes de herdabilidade (h²) para estas características. O método dos quadrados mínimos foi usado para verificação das diferenças nas características morfológicas entre os GG e para obtenção de estimativas de h² pela regressão filha-mãe (RFM). O método REML foi também usado para estimar h². Os dados foram coletados em 183 vacas zebus e 273 novilhas F1 Holandês x Zebu. O GG das fêmeas F1 foi importante para sua inscrição no livro de controle e registro genealógico da raça Girolando, pois os GG obtiveram diferentes pontuações nas características de classificação total para tipo, aparência geral e caracterização leiteira. Para estas três características, as mestiças HxI obtiveram melhor pontuação que as HxN e as novilhas HxT, pontuação intermediária. Entre as características morfológicas, as larguras entre as tuberosidades ilíacas e as isquiáticas, o comprimento da garupa, a profundidade torácica, a altura na cernelha e o peso corporal não apresentaram diferenças entre os três GG zebus e entre suas progênies F1 Holandês x Zebu. As estimativas de herdabilidade variaram de 0,09 (profundidade torácica) a 0,59 (comprimento da orelha) pela RFM e de 0,09 a 0,89 (mesmas características) pelo método REML. Os resultados indicam que, em sistema de cruzamento com a raça Holandesa, para a produção de novilhas F1 para venda, o GG Indubrasil produziu animais melhor caracterizados, como da raça Girolando, os quais, possivelmente, teriam maior apelo comercial que os dos GG Tabapuã e Nelore. Adicionalmente, as estimativas de herdabilidade indicaram que a seleção para características morfológicas levaria a ganhos genéticos diretos razoáveis.

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Incorporating body measurement traits to increase genetic gain of feed efficiency and carcass traits in Japanese Black steers

Kemmotsu,

Takeda,

Ogino

et al. 2024

Journal of Animal Science

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The objective of the present study was to comprehensively evaluate whether body measurement traits, including BW and body size, could be used as indicators of genetic selection for feed efficiency and carcass traits in Japanese Black steers. First, we estimated the genetic parameters for body measurements, feed efficiency, and carcass traits. Second, we estimated the correlated responses in feed efficiency and carcass traits when selection was applied to one or multiple body measurement traits. In total, 4,578 Japanese Black steers with phenotypic values of residual feed intake (RFI) and residual BW gain (RG) as feed efficiency traits and carcass weight (CWT) and beef marbling standard (BMS) as carcass traits were used. Eleven body measurement traits were measured at the start and finish of the fattening periods (BMT1 and BMT2, respectively), and their growth during the fattening period (BMT3) was used for genetic analyses. The results of genetic parameters showed that the heritability estimates were low to moderate (0.10–0.66), and the genetic correlations among body measurement traits were also estimated to be positively moderate to high in each measuring point (0.23–0.99). The genetic correlations of body measurement traits with RFI and BMS were estimated to be low (-0.14–0.30 and -0.17–0.35, respectively), but those with CWT were positively low to high (0.12–0.97). The genetic correlation estimates between BMT3 and RG were moderate to high (0.38–0.78). Second, correlated responses were estimated under positive selection for body measurement traits. Positive selection for BMT2 and BMT3 increased CWT and RG; however, positive selection for body measurement traits resulted in no change in RFI and BMS. Favorable directions of genetic gains, which were positive for RG, CWT, and BMS and negative for RFI, were obtained by selection indices, including multiple traits in BMT1. Our results suggest that using only one body measurement trait as an indicator of genetic selection for RFI is difficult. However, body measurement traits can be indirect indicators of improved RG. Our results also suggest that genetic improvement of both RFI and RG without reducing CWT and BMS could be achieved using selection indices that account for a balance of body conformation using multiple body measurement traits in Japanese Black cattle.

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Genetic Relationships between Body Measurements of Heifers and Carcass Traits of Fattening Cattle in Japanese Black

Cited by 7 publications

References 0 publications

Genetic variability of maternal effect on body measurements and its intra‐ and inter‐genetic relationship with direct effect in Japanese Black calves

Genetic variability of maternal effect on body measurements and its intra‐ and inter‐genetic relationship with direct effect in Japanese Black calves

Diferenças genéticas e estimação de coeficientes de herdabilidade para características morfológicas em fêmeas zebus e F1 holandês x zebu

Incorporating body measurement traits to increase genetic gain of feed efficiency and carcass traits in Japanese Black steers

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