Paraconsistent logic used for estimating the gait score of broiler chickens

The aim of this study was to survey and report the walking ability in broilers housed in both conventional and organic production systems in Denmark. To this end, the authors assessed the walking ability, by using the Bristol scale, in 31 conventional broiler flocks and in 29 organic broiler flocks distributed across Denmark. In addition, assessment of contact dermatitis, leg abnormalities, scratches and plumage cleanliness, as well as postmortem analysis of tibial dyschondroplasia, was performed in conventional broilers. The survey found a prevalence of 77.4 per cent of impaired walking ability (gait score (GS) >0) in conventional broilers and 38.1 per cent in organic broilers. The prevalence of severe lameness (GS >2) was 5.5 per cent and 2.5 per cent for conventional and organic broilers, respectively. The prevalence of tibial dyschondroplasia in conventional broilers was 4.7 per cent. The results on other welfare indicators are also presented for conventional broilers. The results from the present and previous surveys indicate that the prevalence of impaired walking ability in broiler chickens in the Danish conventional production system is high, but the severity has been steadily decreasing over the last 19 years. Furthermore, the results from the survey of organic broilers suggest that lameness is less prevalent and severe in this system relative to conventional production.

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Locomotion problems of broiler chickens and its relationship with the gait score

Revista Brasileira de Zootecnia ◽

10.1590/s1516-35982012000800021 ◽

2012 ◽

Vol 41 (8) ◽

pp. 1951-1955 ◽

Cited By ~ 10

Author(s):

Barbara Cristina da Silva Fernandes ◽

Márcia Regina Fernandes Boaro Martins ◽

Ariel Antonio Mendes ◽

Ibiara Correia de Lima Almeida Paz ◽

Claudia Marie Komiyama ◽

...

Keyword(s):

Broiler Chickens ◽

Gait Score

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A Relational Study of Gait Score (As a Measure for Lameness) With Breast Muscle Yield in Broiler Chickens

10.13031/2013.27156 ◽

2009 ◽

Author(s):

Özlem Cangar ◽

Sophie Cardinaels ◽

Nadia Everaert ◽

Bart De Ketelaere ◽

Claudia Bahr ◽

...

Keyword(s):

Broiler Chickens ◽

Breast Muscle ◽

Gait Score

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Effect of various monochromatic light-emitting diode colours on the behaviour and welfare of broiler chickens

Canadian Journal of Animal Science ◽

10.1139/cjas-2018-0242 ◽

2020 ◽

Vol 100 (4) ◽

pp. 615-623

Author(s):

Shabiha Sultana ◽

Md. Rakibul Hassan ◽

Byung Soo Kim ◽

Kyeong Seon Ryu

Keyword(s):

Broiler Chickens ◽

Light Emitting Diode ◽

Monochromatic Light ◽

Growth Period ◽

Broiler Chicks ◽

Light Emitting ◽

Gait Score ◽

Set Up ◽

Effect Of Light ◽

Sitting Behaviour

This study was conducted to evaluate the effect of different monochromatic light-emitting diode colours on the behaviour and welfare of broiler chicks. A total of 750 one-day-old chicks were used and lighting was set up as follows: pure blue (PB, 440–450 nm), bright blue (460–470 nm), sky blue (480–490 nm), greenish blue (500–510 nm), and green (530–540), while fluorescent white (400–700 nm) was used as a control. Birds were placed into 30 independent light proof pens and each light treatment was replicated five times with 25 birds in each pen. Video was recorded and behaviour was evaluated twice per day and observed five consecutive days in a week. Broiler welfare was evaluated using the characteristics of gait score, tibia dyschondroplasia, tonic immobility duration, and heterophil:lymphocyte ratio. In results, sitting, walking, and ground pecking behaviour were influenced by the light colour from 0 to 7 d. Extending the rearing period from 8 to 21 d resulted in increased sitting behaviour and decreased walking and pecking behaviour in chicks in the PB treatment (P < 0.05). When the growth period was extended further (22–42 d), sitting behaviour increased when chicks were exposed to PB light (P < 0.05). The effect of light colour did not significantly influence welfare of broiler chicks. Thus, the present results suggest that PB light colour decreased broiler chickens movement and thus increased duration of sitting behaviour. These results would be helpful to choose light colour for broiler producers.

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EFFICIENCY OF WASTE USE OF OIL EXTRACTION PRODUCTION IN FEEDING BROILER CHICKENS AND LAYING HENS

PROCEEDINGS of Nizhnevolzhskiy agrouniversity complex science and higher vocational education ◽

10.32786/2071-9485-2018-04-34 ◽

2018 ◽

Keyword(s):

Broiler Chickens ◽

Laying Hens ◽

Oil Extraction

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Kualitas Fisik Daging Ayam Broiler yang Diberi Minyak Buah Merah dalam Pakan Komersial

Jurnal Ilmu dan Teknologi Peternakan Tropis ◽

10.33772/jitro.v6i1.5806 ◽

2019 ◽

Vol 6 (1) ◽

pp. 20

Author(s):

Abdul Rahman Ollong ◽

Rizki Arizona ◽

Rusli Badaruddin

Keyword(s):

Moisture Content ◽

Broiler Chickens ◽

Broiler Chicken ◽

Ph Value ◽

Cooking Loss ◽

Water Holding Capacity ◽

Broiler Meat ◽

Fruit Oil ◽

Water Holding ◽

Range Test

ABSTRAKPenelitian ini bertujuan untuk mengetahui pengaruh penambahan minyak buah merah (MBM) pada pakan terhadap kualitas fisik daging ayam broiler. Seratus ekor ayam broiler umur sehari (DOC) ditempatkan pada lima kelompok perlakuan pakan yang berbeda, yaitu: P1 (pakan kontrol/tanpa penambahan minyak), P2 (2% MBM), P3 (4% MBM), P4 (6% MBM) dan P5 (6% Minyak kelapa sawit). Setiap kelompok perlakuan terdiri dari empat ulangan masing-masing dengan lima ekor. Ayam broiler dipelihara selama 35 hari. Rancangan yang digunakan adalah Rancangan Acak Lengkap (RAL) dengan analisis variansi pola searah dan diuji lanjut dengan Duncan’s New Multiple Range Test (DMRT). Hasil penelitian menunjukkan bahwa semua variable yang diamati menunjukkan adanya pengaruh nyata (P<0,05) terhadap perlakuan yang diberikan. Dari hasil penelitian ini dapat disimpulkan bahwa penggunaan minyak buah merah (MBM) dalam pakan mampu memberikan pengaruh terhadap pH Daging, Daya Ikat Air (DIA), susut masak dan keempukan daging ayam broiler.Kata kunci : daging ayam broiler, daya ikat air, keempukan daging, pH daging, susut masakABSTRACT The experiment was conducted to study the effect of red fruit oil (RFO) onphysical quality of broiler chicken. One hundred day old chicken (DOC) were placed in four groups of different treatments, of from levels of RFO (P1 (diet without addition of RFO), P2 (2% RFO), P3 (4% RFO) and P4 (6% RFO) and P5 (6% Palm oil)). The treatment group consisted of fivereplications with five birds each. Broiler chickens were reared for 35 days. Statistical analysis used Completely Randomized Design (CRD) and followed by Duncan’s New Multiple Range Test (DMRT). The results showed that the pH value, moisture content, water holding capacity, and cooking loss was significant differences. It could be concluded that the addition of red fruit oil in the diet give effect of broiler chicken meat.Keywords: broiler meat, cooking loss, moisture content, pH value, water holding capacity

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