Banca de DEFESA: ELEANATAN SYANNE DA CRUZ RIBEIRO
Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.STUDENT : ELEANATAN SYANNE DA CRUZ RIBEIRO
DATE: 01/03/2023
TIME: 14:00
LOCAL: Online plataforma Meet
TITLE:
Pre-slaughter factors that cause injuries in bovine carcasses.
KEY WORDS:
Cattle breeding, bruises, bovine slaughter
PAGES: 71
BIG AREA: Ciências Agrárias
AREA: Zootecnia
SUMMARY:
It is noteworthy that most of the time only in the post-mortem the injuries inflicted on the animals in the pre-slaughter handling are visualized, making it difficult to understand which was the stressor. The objective was to evaluate the incidence of injured carcasses in four anatomical and multiple regions during the pre-slaughter handling of cattle, as well as to identify the possible causes associated with the occurrence of injuries. Data from 1980 batches of animals that were slaughtered in a slaughterhouse located in the municipality of Castanhal - Pará, between May 2020 and May 2021 were used. carcasses injured in the front, ribs, loin, hindquarters and multiples were counted. The variables considered as causing lesions were sex, presence or absence of horns, weight classes, Amazon season, coat condition, type of transport vehicle, density of lots (only for truck vehicles) and distance traveled. To carry out the statistical analysis, the RStudio® software processed descriptive statistics, binomial logistic regression to identify the probability of occurrence of injured carcasses and anatomical regions and an analysis of variance (ANOVA). It is noteworthy that the regions most affected by lesions were the hindquarters and multiple areas, mainly for lots of females. The greater probability of occurrence of bruises on carcasses is increased by the presence of horns and variables associated with transport, namely the effect of the type of transport vehicle, the effect of distances traveled and the effect of load densities. Densities lower than 200 Kg/m2 and greater than 600 Kg/m2 increased the occurrence of injuries due to instability inside the bodies, leading to falls and another important factor was the distances, since the gradual increase exposes the animals to the elements for longer . Finally, the non-compliance of any factor inherent to the animals, transportation as well as the slaughterhouses are capable of increasing the incidence of bruises in the carcasses.
BANKING MEMBERS:
Presidente - 1487106 - CRISTIAN FATURI
Interno - 035.432.296-64 - ANDRE GUIMARAES MACIEL E SILVA - UFPA
Interna - 1354679 - KALIANDRA SOUZA ALVES
Externo ao Programa - 3271084 - ANDRE SANCHES DE AVILA
Externo à Instituição - RICARDO ZAMBARDA VAZ - UFSM