Carcass characteristics of feedlot-finished Nellore heifers slaughtered at different weights

Rezende, Pedro Leonardo de Paula; Restle, João; Bilego, Ubirajara Oliveira; Fernandes, Juliano José de Resende; Missio, Régis Luís; Guimarães, Tiago Pereira

doi:10.4025/actascianimsci.v41i1.44826

Cited by 6 publications

(3 citation statements)

References 10 publications

(19 reference statements)

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“…In commercial terms, the producer is mostly concerned with hot carcass yield (HCY), calculated as HCW divided by slaughter weight (Rezende et al, 2019). In the present study, the average carcass yield was 48.3%, higher than the 38.9% found by Trindade et al, (2018) in Santa Ines sheep finished in tropical pastures receiving supplementation at a rate of 1.38% of body weight.…”

Section: Carcass Characteristicsmentioning

confidence: 48%

Different Grass Availabilities of Tropical Pasture on Performances and Carcasses of Lambs

Heimbach

Ítavo

et al. 2020

Trop. Anim. Sci. J.

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This study aimed to identify the best green-leaf offerings of Urochloa brizantha cv. Marandu for pasture-finished lambs receiving protein-energy supplementation at the rate of 1.6% of their body weights (BW). The animals were assigned into four treatments, which consisted of varied green-leaf offerings, namely, 105, 90, 75, or 60 g of dry matter/kg of body weight (BW). Sixty-eight contemporary Texel × mixed-breed lambs with an average initial BW of 22.6 kg were used over two years of experiment. The experiment was set up in a completely randomized design, the data were evaluated by analysis of variance and the means were compared by Tukey's test at the 0.05 significance level. There was no significant effect of year neither interaction of year with green-leaf offer. There were significant effects of leaf offer on dry matter intake (DMI) with behavior of positively linear (p<0.05). There were significant effects of green-leaf offer on final BW and average daily gain, and lambs receiving of 75 g/kg green-leaf offer showed the highest ADG (179 g/d). There were no significant differences in the carcass, meat, and primal cuts between the groups of lambs receiving different herbage offerings. There were significant effects of leaf offer on slaughter weight, hot carcass weight, and subcutaneous fat thickness. Lambs receiving of 75 g/kg leaf offer showed the highest SFT (5.8 mm). Slaughter weight and hot carcass weight averaged 41.52 kg and 20.07 kg, respectively. We recommend the treatment with leaves offer of 75 g/kg BW of Marandu pasture for the finishing of lambs supplemented at 1.6% of BW.

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Section: Carcass Characteristicsmentioning

confidence: 48%

Different Grass Availabilities of Tropical Pasture on Performances and Carcasses of Lambs

Heimbach

Ítavo

et al. 2020

Trop. Anim. Sci. J.

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“…(2004) described that the IMF content increased when the hot carcass weight of Angus, Angus×Hereford and Wagyu×Holstein increased from 100 to 450 kg ( Figure 3 ). A positive correlation between MS and slaughter weight in feedlot-finished Nellore heifers was observed ( Rezende et al., 2019 ). Moreover, Nogalski et al.…”

Section: Management Factorsmentioning

confidence: 99%

Main regulatory factors of marbling level in beef cattle

Nguyen

Malau‐Aduli

2021

Veterinary and Animal Science

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The content of intramuscular fat (IMF), that determines marbling levels is considered as one of the vital factors influencing beef sensory quality including tenderness, juiciness, flavour and colour. The IMF formation in cattle commences around six months after conception, and continuously grows throughout the life of the animal. The accumulation of marbling is remarkably affected by genetic, sexual, nutritional and management factors. In this review, the adipogenesis and lipogenesis process regulated by various factors and genes during fetal and growing stages is briefly presented. We also discuss the findings of recent studies on the effects of breed, gene, heritability and gender on the marbling accumulation. Various research reported that feeding during pregnancy, concentrate to roughage ratios and the supplementation or restriction of vitamin A, C, and D are crucial nutritional factors affecting the formation and development of IMF. Castration and early weaning combined with high energy feeding are effective management strategies for improving the accumulation of IMF. Furthermore, age and weight at slaughter are also reviewed because they have significant effects on marbling levels. The combination of several factors could positively affect the improvement of the IMF deposition. Therefore, advanced strategies that simultaneously apply genetic, sexual, nutritional and management factors to achieve desired IMF content without detrimental impacts on feed efficiency in high-marbling beef production are essential.

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“…The averaging of backfat thickness was 6.22 mm. This value is adequate, the backfat thicker than 3 mm is desirable, as preventing the muscle fibers from shortening due to cold and does not compromise the tenderness of meat (Rezende et al, 2019). The cattle displayed normal feeding behavior, and similar with other study (Machado, 2019).…”

Section: Animals and Experimental Dietsmentioning

confidence: 99%

Strategies to improve the nutritive value of whole-plant corn silage in diets for finishing beef cattle

Machado¹

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Strategies to improve the nutritive value of whole-plant corn silage in diets for finishing beef cattle / Juliana Machado. --versão revisada de acordo com a Resolução CoPGr 6018 de 2011. --Piracicaba, 2022. p.Tese (Doutorado) --USP / Escola Superior de Agricultura "Luiz de Queiroz".1. Colhedora de forragem 2. Cobertura do silo 3. Desempenho animal 4. Filme de vedação I. Título ACKNOWLEDGMENTSTo God, for giving meaning to my life, guiding me along good paths and never letting me give up in difficult moments.To my parents, Marco Antonio and Natalia, for being my example of a human beings, for all their support and irrefutable love. They always motivated me to follow my dreams and to be the best version of myself.To my brother, Julio Cesar, for all the support.To Luiz de Queiroz College of Agriculture, for providing an excellent structure for the development of research.To my advisor, Prof. Dr. Luiz Gustavo Nussio, for supervising and supporting the projects, and for all the professional and personal growth that his guidance provided.To Prof. Dr. Arlindo Saran Netto, for his collaboration and support in conducting these projects.

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Carcass characteristics of feedlot-finished Nellore heifers slaughtered at different weights

Cited by 6 publications

References 10 publications

Different Grass Availabilities of Tropical Pasture on Performances and Carcasses of Lambs

Different Grass Availabilities of Tropical Pasture on Performances and Carcasses of Lambs

Main regulatory factors of marbling level in beef cattle

Strategies to improve the nutritive value of whole-plant corn silage in diets for finishing beef cattle

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