Effects of breed type and supplementation during grazing on carcass traits and meat quality of bulls fattened on improved savannah

Jerez-Timaure, Nancy; Huerta-Leidenz, Nelson

doi:10.1016/j.livsci.2008.06.015

Cited by 20 publications

(33 citation statements)

References 19 publications

(31 reference statements)

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“…The finding that supplementary diet increased slaughter and carcass weights of steers was consistent with literature (Rubanza et al, 2005;Jerez-Timaure and Huerta-Leidenz, 2009). Since steers that were given supplementary diets had high ADGs they were expected to have greater muscle deposition and, consequently high slaughter weights and heavy carcasses (Gleghorn et al, 2004;Jerez-Timaure and Huerta-Leidenz, 2009).…”

Section: Discussionsupporting

confidence: 91%

“…Since steers that were given supplementary diets had high ADGs they were expected to have greater muscle deposition and, consequently high slaughter weights and heavy carcasses (Gleghorn et al, 2004;Jerez-Timaure and Huerta-Leidenz, 2009). Moreover, Gleghorn et al (2004) reported that BCS and live-weight of cattle at the time of slaughter influence carcass quality and yields.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Nutritional status, growth performance and carcass characteristics of Nguni steers supplemented with Acacia karroo leaf-meal

et al. 2009

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Nutritional status, growth performance and carcass characteristics of Nguni steers supplemented with Acacia karroo leaf-meal

et al. 2009

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“…The estimates of Romosinuano direct effects for the traits related to yield in Table 4 and the sire and dam breed Romosinuano means for traits related to palatability and quality in Table 3 were consistent with the limited work done with the breed as straightbreds relative to Angus (Phillips et al, 2006) or as bulls, or crossbred steers or heifers (Jerez-Timaure et al, 2009;Casas et al, 2010;Wheeler et al, 2010). In those studies, Romosinuano was generally associated with lighter carcasses and lower intramuscular and external fat deposition relative to Bos taurus breeds, but similar LM area.…”

Section: Discussionsupporting

confidence: 72%

Genetic effects on carcass quantity, quality, and palatability traits in straightbred and crossbred Romosinuano steers1,2

Riley¹,

Chase²,

Coleman³

et al. 2012

Journal of Animal Science

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The objectives of this work were to estimate heterosis and breed genetic effects for carcass quantity, quality, and palatability traits of steers (Bos spp.) produced from matings of Romosinuano, Brahman, and Angus cattle. Steers (n = 464) were weaned at 7 mo of age and transported to the Southern Great Plains where they grazed winter wheat for 6 mo and were then fed a finishing diet until serial slaughter after different days on feed (average 130 d). Carcass quality and quantity traits were measured; steaks (aged 7 d) were obtained for palatability evaluation. Heterosis was detected for BW, HCW, dressing percentage, LM area, and yield grade for all pairs of breeds. Generally, Romosinuano-Angus heterosis estimates were smallest, Romosinuano-Brahman estimates were intermediate, and Brahman-Angus heterosis estimates were largest. The direct Romosinuano effect was to decrease (P < 0.05) BW (-67 ± 16 kg), HCW (-48 ± 10 kg), dressing percentage (-1.4 ± 0.5 units), 12th rib fat thickness (-5.2 ± 0.8 mm), and yield grade (-0.9 ± 0.1), and to increase LM area per 100 kg HCW (3.6 ± 0.3 cm(2)/100 kg). Significant Brahman direct effects were detected for BW (34 ± 17 kg), HCW (29 ± 10 kg), dressing percentage (1.6 ± 0.6 %), LM area per 100 kg HCW (-3.3 ± 0.4 cm(2)/100 kg), and yield grade (0.6 ± 0.1). Significant Angus direct effects were to increase 12th rib fat thickness (3.8 ± 1 mm). Among sire breed means, Romosinuano had reduced (P = 0.002) marbling score (393 ± 9) than Angus, but greater mean sensory tenderness scores (5.8 ± 0.1), and reduced percentage Standard carcasses (10 ± 2%) than Brahman (P < 0.002). Angus sire breed means for marbling score (475 ± 10), overall tenderness (5.8 ± 0.1), and percentage Choice carcasses (75 ± 5%) were greater (P < 0.05) than Brahman sire breed means (360 ± 11, 5.4 ± 0.1, 31 ± 5%). From consideration only of characteristics of the end product of beef production, Romosinuano did not provide a clearly superior alternative to Brahman for U.S. producers, as they had some quality and palatability advantages relative to Brahman, but at lighter HCW.

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“…However, the regularity of the concentrate supply for the pasture and the stall was different between the two clusters. Concentrate supplementation during the fattening period increased the carcass weights, even if the animals were slaughtered at similar live weights (McCaughey et al 1999;Jerez-Timaure and Huerta-Leidenz 2009). In this case, the fat scores were not affected, but the conformation scores decreased (Jerez-Timaure and Huerta-Leidenz 2009).…”

Section: Fattening Periodmentioning

confidence: 95%

Rearing practices in each life period of beef heifers can be used to influence the carcass characteristics

Monteils

Sibra

2019

Italian Journal of Animal Science

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To improve their income, European cattle breeders have to produce cattle carcasses with the best score on the EUROP system. The objectives of this study were to identify the rearing practices applied on farms at each period of a heifer's life and to study the relationship between these practices and the carcass characteristics. Farm surveys (n ¼ 45) were performed to assess the rearing practices. A factorial analysis of mixed data followed by a hierarchical clustering on principal components was performed for each life period. The clusters resulting from these typologies were related to the carcass characteristics (weight, conformation and fat scores). For the suckling period, the cluster characterised by a calving season in autumn, a short pasture period and systematic supplies of stored grass and concentrate in stall gave heavy carcasses with the highest conformation scores. For the growth period, the best cluster for producing favourable carcass characteristics was characterised by the longest pasture period, feeding the most stored grass and feeding a regular concentrate supply throughout the year. For the fattening period, the cluster characterised by the oldest age at the beginning of the period and at slaughter, slaughter in winter and autumn, a long pasture period and regular concentrate supply gave the heaviest carcasses with the highest conformation scores. This study highlights several rearing practices that could be used as a means to influence the carcass characteristics, and also the life periods at which animals are sensitive to changes in management practices to improve weight and conformation scores. HIGHLIGHTSCarcass characteristics are related to rearing practices applied at each life period of heifers. Rearing practices can be used as a means to influence carcass characteristics. ARTICLE HISTORY

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Effects of breed type and supplementation during grazing on carcass traits and meat quality of bulls fattened on improved savannah

Cited by 20 publications

References 19 publications

Nutritional status, growth performance and carcass characteristics of Nguni steers supplemented with Acacia karroo leaf-meal

Nutritional status, growth performance and carcass characteristics of Nguni steers supplemented with Acacia karroo leaf-meal

Genetic effects on carcass quantity, quality, and palatability traits in straightbred and crossbred Romosinuano steers1,2

Rearing practices in each life period of beef heifers can be used to influence the carcass characteristics

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