The Typology of Broiler House and the Impact in the Locomotion of Broilers

Abstract

The large majority of broiler houses use two types of systems: dark-house system-DHP, and tunnel with curtain system-ATC. The objective of the present study was to evaluate the association and the prevalence of locomotion issues in the broiler commercial farming systems (DHP and ATC). For assessing the thermal environment and the litter quality, a completely random design was adopted using two factors (broiler houses, DHP and ATC) with 12 repetitions. To study the surface temperature of the broiler breast, and the locomotion ability (gait score) a completely randomized design was adopted in a double factorial scheme 2 x 2 (two houses typology vs. sex) with 24 repetitions. To verify whether the type of house and the sex were associated to broiler locomotion problems due to the lack in walking ability, and the presence of medular compression (spondylolisthesis) the logistic regression was applied to the analysis: odds ratio and relative risk. The chance of the poultry to present inability of walking was 3.80 times higher in the male population. The risk factor associated with the lack of walking ability of the poultry was correlated to the tunnel house with curtains, presenting a relative risk 1.58 times higher when compared to the dark-house with walls. There was not the relative risk of medular compression (spondylolisthesis) neither was found an association between the poultry' sex and the type of house. The reduction in the male broiler locomotion ability might be associated with the rearing in the housing tunnel with curtains.

Kualitas dan Kadar Amonia Litter Akibat Penambahan Sinbiotik dalam Ransum Ayam Broiler

“…Metode pengukuran pH litter dilakukan sesuai dengan metode Garcia et al (2018) yang dimodifikasi. Pengukuran sampel pH litter dengan mengambil 5 g sampel litter dan dihomogenisasi dengan 100 ml aquades kemudian diukur menggunakan alat pH-meter (Hanna, HI-2210, Hanna Inst., São Paulo, Brasil).…”

Efek Perbedaan Dataran terhadap Kualitas Litter Closed House Ayam Broiler

“…Pengukuran suhu litter menerapkan metode (Jacob et al, 2016 Pengukuran suhu litter dalam kandang menggunakan alat infrared, pengukuran suhu litter dilakukan dengan cara meletakkan alat infrared pada litter lalu diamati menunjukkan pada suhu berapa dan kemudian dicatat hasilnya. Pengukuran nilai pH pada litter menerapkan metode (Gracia et al, 2018) menggunakan pH meter dengan cara disiapkan 3 gram litter ditambah aquades sampai 50 ml kemudian dihomogenisasi. Larutan diambil 3 ml taruh ke tube lalu disentrifus (8000 rpm selama 3 menit).…”

Computer Vision for Morphometric Evaluation of Broiler Chicken Bones

“…(Mabelebele et al, 2017). As a consequence, injuries and deformities in the legs are recurrent, which in turn leads to decreased bone strength and a higher incidence of fractures (Garcia et al, 2018).…”

“…Furthermore, locomotor problems of birds have been widely discussed from the perspective of animal welfare (Nääs et al, 2010;Buijs et al, 2012;Garcia et al, 2018). Studies indicate that the natural behavior of chickens can be altered by irregular bone development, with leg weakness being a source of pain and an impediment to walking.…”