Non-nutritive Chewing by Pigs: Implications for Tail-biting and Behavioral Enrichment

1994 ◽  
Vol 37 (3) ◽  
pp. 947-950 ◽  
Author(s):  
J. J. R. Feddes ◽  
D. Fraser
Keyword(s):  
Tail Biting ◽  
Behavioral Enrichment

Trap Detection Based Decoding Algorithm for Tail-biting Convolutional Codes

2011 ◽  
Vol 33 (10) ◽  
pp. 2300-2305
Author(s):  
Xiao-tao Wang ◽  
Hua Qian ◽  
Jing Xu ◽  
Yang Yang
Keyword(s):  
Convolutional Codes ◽  
Decoding Algorithm ◽  
Tail Biting

Decision support system with semantic model to assess the risk of tail biting in pigs

2004 ◽  
Vol 87 (1-2) ◽  
pp. 45-54 ◽  
Author(s):  
Marc B.M Bracke ◽  
B Hulsegge ◽  
Linda Keeling ◽  
Harry J Blokhuis
Keyword(s):  
Decision Support ◽  
Decision Support System ◽  
Support System ◽  
Semantic Model ◽  
Tail Biting

scholarly journals Influence of tail biting on weight gain, lesions and condemnations at slaughter of finishing pigs

2012 ◽  
Vol 32 (10) ◽  
pp. 967-974 ◽  
Author(s):  
Brenda Maria F.P.P. Marques ◽  
Mari L. Bernardi ◽  
Carolini F. Coelho ◽  
Mirian Almeida ◽  
Oscar E. Morales ◽  
...  
Keyword(s):  
Weight Gain ◽  
Finishing Pigs ◽  
Lesion Score ◽  
Farm Level ◽  
Lower Weight ◽  
Tail Biting ◽  
Condemnation Rate ◽  
Lower Weight Gain ◽  
Degree Of Severity ◽  
Lesion Severity

The present study assessed the association of tail-biting lesions in finishing pigs with weight gain, occurrence of locomotion or respiratory disorders and abscesses during finishing period, and carcass condemnation at slaughter. The study was carried out on 4 different farms. For each animal with a tail biting lesion, two control pigs were selected. The total number of animals in the study was 312, with 104 of them being tail-bitten. Tail lesions were classified according to the degree of severity into four scores: score 0 -normal tail withou lesion; score 1-3 - increasing lesion severity, and score 4 - healed lesions. Overall, the occurrence of severe tail lesions (score 3) varied from 55 to 73% of tail-bitten pigs among farms. On all farms, healing of tail lesions was observed in 95% to 100% of the animals at the evaluation performed within 41-43 days after the commencement of the study. In two out of the four evaluated farms, pigs with score of 3 showed lower weight gain (P<0.05) compared with score 0 pigs. Before slaughter, the occurrence of locomotion problems and nodules/abscesses was associated (P<0.05) with the presence of tail-biting lesions. At slaughter, tail-biting lesions were associated (P<0.05) with the presence of abscesses, lung lesions (pleuritis and embolic pneumonia) or arthritis in carcasses. Carcass condemnation was associated with the presence of tail-biting lesions (P<0.05). Overall, carcass condemnation rate was 21.4%, of which animals with tail-biting lesions accounted for 66.7% of condemnations. Among the animals diagnosed with cannibalism at farm level, only two had not healed their lesions at slaughter. The fact that there were a lot of carcass condemnations, despite the fact that tail-bitten animals had no more active lesions, suggests that different situations may be observed between the field and slaughter, reinforcing the need to analyze pigs both at farm and slaughter to allow proper assessment of losses related to tail biting. Collectively, the observations of the present study show that complications associated with tail-biting found in slaughterhouses are probably underestimating field prevalence.

The modified wrap-around Viterbi algorithm for convolutional tail-biting codes

2012 ◽  
Vol 35 (4) ◽  
pp. 431-437
Author(s):  
Yunghsiang S. Han ◽  
Ting-Yi Wu ◽  
Hung-Ta Pai ◽  
Po-Ning Chen
Keyword(s):  
Viterbi Algorithm ◽  
Tail Biting
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