Bem-estar e taxa de hematomas de bovinos transportados em diferentes distâncias e modelos de carroceria no estado do Mato Grosso - Brasil

Bertoloni, William; Silva, Jorge Luiz da; Abreu, Janessa Sampaio de; Andreolla, Douglas

doi:10.1590/s1519-99402012000300022

Cited by 18 publications

(19 citation statements)

References 16 publications

(10 reference statements)

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“…The combination of the results from the present study identified 11 animals with up to 1 hematoma, 8 animals with 2 and 14 with 3 or more hematoma lesions, results similar to those observed by Bertoloni et al [34], where 60% of the slaughtered animals presented at least one hematoma in their carcass.…”

Section: Resultssupporting

confidence: 91%

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Reactive oxygen species and evaluation of the quality of carcasses and beef meat from cold storage slaughterhouses located in the Federal District and Surroundings (Brazil)

Sousa

et al. 2018

Preprint

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26The aim of this study was to detect reactive oxygen species and evaluate the quality 27 of carcasses and beef meat from cold storage slaughterhouses located in the Federal District 28 and Surroundings. Information was obtained on the gender, breed and age of each animal, 29 as well as the distance travelled (km) and time (h) from the property to the cold storage 30 slaughterhouse. Data and samples were obtained from a total of 33 animals and their 31 respective carcasses. Fragments of the extensor carpi radialis muscle were extracted from all 32 the carcasses to analyze the presence of reactive oxygen species (ROS), and samples of the 33 Longissimus dorsi muscle to perform the 24h post-mortem pH, colorimetric test, cooking 34 loss and drip loss assessment and to measure the shear force. The presence of hematomas 35 was detected in 28 carcasses, where the tail and croup (17/33) and flank (17/33) regions were 36 the most affected. The electron paramagnetic resonance indicated an average of 52.59 ROS/g 37 in the analyzed pieces. The meat quality tests indicated averages of: 5.8 for the 24h post-38 mortem pH, L*29.34, a* 2.52 and b* 1.31 in calorimetry, 2.30 kg/f for the shearing force, 39 11.75% of cooking losses and 1.88% of drip losses. The statistical analyses demonstrated a 40 tendency to positive correlation between the presence of hematomas with and the amount 41 of ROS, and between the presence of hematomas and pH value. Furthermore, statistically, 42 female gender was one of the influential factors on the tenderness value. According to the 43 results, it was concluded that the meat evaluated in this study meets the desirable quality 44 parameters and it was possible to detect reactive oxygen species in the samples of muscle 45 tissue. 3 46 Introduction 47 Brazil's livestock farming stands out as an important sector of the national economy 48 and in the year 2016 it represented approximately 24% of the Gross Domestic Product [1]. 49 In 2017 Brazil kept its spotlight in the international market as the world's greatest beef meat 50 exporter [1]. 51 To maintain its market competitiveness, the country has invested in the productivity 52 and quality of the final product offered to the consumer [2]. In beef , tenderness, flavor, 53 juiciness and color are desired as determining characteristics for the purchase decision, 54 which are susceptible to changes due to intrinsic factors such as the gender, age and breed, 55 and extrinsic factors such as nutrition and stress during handling [3]. 56 Studies on meat quality often correlate these parameters when evaluating the 57 characteristics of the meat produced by crossbreeding and the comparison of age and diet 58 types [4,5,6,7], where the main analyzed characteristics are the pH, colorimetry and shearing 59 force [8,9,10] as well as water retention capacity when measured by evaluating cooking and 60 drip losses [4]. 61 Still related to the meat quality is the pre-slaughter handling performed by the farms 62 and industries of meat, which can generate stress, contusio...

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Section: Resultssupporting

confidence: 91%

“…In addition to being used as a welfare indicator, hematomas generate economic loss to the producer, given that the meat can be compromised and discarded due to the lesion extension and depth [34]. Handling best practice can avoid great economic losses given that the main noble cuts are located in the most affected regions.…”

Section: Resultsmentioning

confidence: 99%

Reactive oxygen species and evaluation of the quality of carcasses and beef meat from cold storage slaughterhouses located in the Federal District and Surroundings (Brazil)

Sousa

et al. 2018

Preprint

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“…Articulated vehicles have a centrifugal movement greater than trucks without articulation. At unloading, the greater the load capacity of the vehicle, the greater the chance of causing falls and bumps against animals (Bertoloni et al., ). Schwartzkopf‐Genswein et al.…”

Section: Discussionmentioning

confidence: 99%

Causes of bruising in carcasses of beef cattle during farm, transport, and slaughterhouse handling in Brazil

Mendonça

Vaz

et al. 2018

Animal Science Journal

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This study aimed to assess preslaughter factors responsible for the occurrence of bruises to front, rib, loin, hip, and round sites of cattle carcasses. Data from the slaughter of 148 loads of cattle were assessed, totaling 4,611 carcasses. Evaluated bruising factor variables were animal gender, journey distance (km), vehicle type (m²), journey time (hours), load density (kg/m2), handling and facilities conditions (optimal, acceptable, and unacceptable), and unloading waiting time (min). Gender had the strongest influence on carcass bruising, being the first variable to enter in the majority of models related to the carcass sites. Female carcasses displayed higher bruising in all sites. Densities above 401 kg/m² caused more bruising. With the exception of the loin, unacceptable, and acceptable conditions assigned to farm facilities and handling resulted in higher average bruising. Articulated vehicles with a greater load capacity were more likely to cause bruising. The effects of variables causing bruises act differently in the various carcass sites. In this sense, the results of this study suggested possible management practices for specific problems during the preslaughter period to minimize losses by bruising to different carcass sites.

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“…Strappini et al (2013) reported a bruising rate of 36.5%, correlating this with the impact of the gates hitting the loin of the animals. The literature emphasizes that handling during the guiding of animals is a problem, since gates do not work automatically (RUSSI et al, 2011), as are the logistics for transport vehicles because there is no protection that avoids or minimizes the severity of bruising (BERTOLONI et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Genetic group and horns presence in injuries and economic losses of bovine carcasses

Mendonça

Vaz

Leal

et al. 2016

SCA

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Assessment of carcass bruises in steers and cull females, classified during unloading at the slaughterhouse according to genetic dominance in zebu and taurine cattle, and the presence of horns, including polled, horned and mixed batches. We considered horned the batches that included more than 20% of horned animals and mixed the batches that included less than 20% horned animals. The data were collected in a commercial slaughterhouse and included 93 batches, with a total of 2,520 animals, from different regions in Rio Grande do Sul. After evisceration, the bruises were identified and recorded in the different carcass regions: hip, round, ribs, forequarter and loin area per animal and batch. The weights of the removed tissue due to bruising was based on the average weights of various samples of bruises according to their degree of severity. Regarding the number of bruises per animal, no differences (P > 0.05) were observed between genetic groups, however, when comparing the total bruises per batch, differences were observed in all carcass regions, except for the forequarter, with a greater number of injuries in zebu than in taurine carcasses. The individual assessments showed 86.2% (P < .05) more bruises in the ribs region in horned than in polled animals carcasses. Horned batches had higher bruises mean (P < .05) compared to the polled, with increases of 65.1; 131.7 e 132.8 % in total bruises in the carcass, ribs and forequarter, respectively. The mixed batches did not differ from polled and horned batches. Zebu animals were responsible for higher industry loss totaling 1.21 kg, resulting in a economic loss of R $ 15.48 per carcass. The presence of horns resulted in greater carcass loss, 1.13 kg, with economic loss of R $ 16.11 per carcass. The bruises on carcasses are affected by the breed group and presence of horns, with zebu and horned groups leading to greater economic losses for the meat production chain. Key words: Animal welfare. Carcass cuts. Taurine. Zebu. ResumoFoi realizado um estudo para avaliar as contusões na carcaça de machos castrados e fêmeas de descarte, classificados ao desembarque no frigorífico segundo a predominância genética em taurinos e zebuínos, e a presença de chifres, incluindo mochos, aspados e mistos. Foram considerados aspados os lotes que incluíam mais de 20% de animais aspados, e mistos menos de 20% de animais aspados. coletados em uma empresa frigorífica do RS, por intermédio da análise de 93 lotes, totalizando 2.520 animais, provenientes de diferentes regiões do estado. Após a evisceração, na linha de abate, foram identificadas as contusões e contabilizadas de acordo com as regiões da carcaça: quadril, traseiro, costela, dianteiro e lombo, por animal e total do lote. Os pesos dos tecidos removidos devido às contusões foi baseado nos pesos médios de várias amostragens das contusões de acordo com o grau de severidade das mesmas. Não houve diferenças (P > 0,05) no número de contusões por animal entre os grupos genéticos, porém, quando comparados os totais por lote, observ...

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Bem-estar e taxa de hematomas de bovinos transportados em diferentes distâncias e modelos de carroceria no estado do Mato Grosso - Brasil

Cited by 18 publications

References 16 publications

Reactive oxygen species and evaluation of the quality of carcasses and beef meat from cold storage slaughterhouses located in the Federal District and Surroundings (Brazil)

Reactive oxygen species and evaluation of the quality of carcasses and beef meat from cold storage slaughterhouses located in the Federal District and Surroundings (Brazil)

Causes of bruising in carcasses of beef cattle during farm, transport, and slaughterhouse handling in Brazil

Genetic group and horns presence in injuries and economic losses of bovine carcasses

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