CBL - Campus del Baix Llobregat

Projecte llegit

Títol: Estudi de l'estrès durant el transport cap al sacrifici dels cabrits

Estudiant que ha llegit aquest projecte:

Tutor/a o Cotutor/a: GORCHS ALTARRIBA, GIL

Departament: DEAB

Títol: Estudi de l'estrès durant el transport cap al sacrifici dels cabrits

Data inici oferta: 15-12-2022      Data finalització oferta: 15-07-2023

Estudis d'assignació del projecte:
    GR ENG CIEN AGRONOM

Lloc de realització:


En empresa (cal signar un conveni de cooperació)

        Tutor/a Extern: Ahmed Salama Fadili,
        Institució/Empresa: Universitat Autónoma de Barcelona

Segon tutor/a extern: Ahmed Salama Fadili

Paraules clau:
benestar animal, normativa, cabrit de llet, transport, densitat de càrrega, estrès

Descripció del contingut i pla d'activitats:
Es tracta de valorar la resposta a l¿estrès al que és sotmesa una
mostra de 25 cabrits durant el transport al sacrifici. Les variables
a estudiadar són el pes dels cabrits, raça i densitat, segons la
densitat. Es determinaran diferents paràmetres sanguinis per valorar
la resposta a l'estrés-

Overview (resum en anglès): The availability of space for animals in livestock transport vehicles can have a significant effect on their welfare. In Spain, a large number of kid goats are transported to slaughterhouses within journeys of < 8 h. EU transport regulations state that lightweight goats (< 35 kg) should have access to spaces of 0.2 - 0.3 m²/animal. However, it is allowed to transport small animals in areas < 0.2 m²/animal. This study examined the behavior and physiological responses of 25 kid goats (30 - 60 days old and 8 - 10 kg body weight) of the Murciano-Granadina breed, transported for 2 hours (115 km) in an approved trailer with two compartments of different spaces. Acceleration, sound, and temperature sensors were installed in the trailer to monitor the physical variables of the transport. The kids were assigned to balanced batches of high density (0.013 m²/kg; n = 15; 9.31 ± 0.54 kg body weight) and low density (0.018 m²/kg; n = 10; 9.75 ± 0.68 kg body weight). All kids were weighed at loading, upon arrival, and after 24 hours of rest. At the same time, their temperatures (rectal, iris, and tear) were measured, and blood samples were taken for serum metabolite analysis. The physical characteristics of the transport indicated strong accelerations and noises that must have been a source of stress. On average, the kids lost almost 4% of body weight, and rectal temperature decreased by 0.2 ºC during transport, regardless of the stocking density. Blood concentrations of creatine kinase (CK), lactate dehydrogenase (LDH), cortisol, glucose, and serum-free fatty acids increased during the journey in both batches. Kids transported on reduced surfaces showed higher CK and LDH values than animals transported at lower stocking densities, indicating greater transport stress. All serum parameters returned to their initial values after rest. It is suggested to modify Regulation (EC) 1/2005 to limit the surface area of compartments for transporting suckling goats to 0.018 m²/kg (> 0.18 m²/animal) and to regulate the currently unregulated sounds and vibrations.

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