Biting fly damage on bovine leather - An alternative source of 'light spot' damage / P. J Stosic in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 84, N° 4 (07-08/2000)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 84, N° 4 (07-08/2000) . - p. 159-164 Titre : Biting fly damage on bovine leather - An alternative source of 'light spot' damage Type de document : texte imprimé Auteurs : P. J Stosic, Auteur ; P. J. Hadley, Auteur ; G. C. Coles, Auteur ; D. Shearer, Auteur ; P. C. Garnsworthy, Auteur Année de publication : 2000 Article en page(s) : p. 159-164 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Croûte (cuir) On entend par "cuir en croûte" des cuirs ayant subi les opérations jusqu'au tannage, à l'exclusion de toute opération de corroyage ou de finissage, mais qui, par opposition aux wet-blue ont été séchés. Cuirs et peaux -- Défauts Cuirs et peaux de bovins Mouches Taches (défauts) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : During the grading processes of leather, one of the most common downgrading defects is ‘light spot’. Small scale trial work has established that a form of ‘light spot’ was produced on bovine crust leather after the live animal had been exposed to biting flies (specifically Stomoxj’s calcitrans). The resultant damage was found to have sharper boundary edges, compared with the diffuse edges associated with lice ‘light spot’ damage. The ‘light spots’ were grouped closely together and were of a more consistent, regular size and shape than either lice or demodex damage. The fly damage penetrated into the corium layer of the skin, beyond the superficial grain enamel loss associated with lice damage. Note de contenu : - Light spot damage : Biting flies - Economic losses associated with biting flies - Outline of trial : Pathology results - Leather damage results - Table 1 : Examples of different ‘light spot’ damage faults on leather and the causal agents En ligne : https://drive.google.com/file/d/1z19d235x_v9h_ArQ2V7zlZeyaM3RZOLC/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40999 [article]

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Effects of some important ectoparasites on the grain quality of cattlehide leather / A. L. Everett in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXII (Année 1977)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXII (Année 1977) . - p. 6-24 Titre : Effects of some important ectoparasites on the grain quality of cattlehide leather Type de document : texte imprimé Auteurs : A. L. Everett, Auteur ; R. W. Miller, Auteur ; W. J. Gladney, Auteur ; Mary V. Hannigan, Auteur Année de publication : 1977 Article en page(s) : p. 6-24 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acariens Cuirs et peaux -- Défauts Cuirs et peaux de bovins Démodécie Ectoparasites Evaluation Mouches Parasitoses Poux Taons Tiques Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Hides and leather from 23 cattle exposed to massive infestations of bloodsucking external parasites were evaluated for grain damage in a co-operative series of tests over an eight-year period. In tests under controlled conditions, horn flies, and two species of mosquitoes caused no significant damage to leather grain ; four species of hard ticks caused severe damage in every case, with no apparent differences among the species. Damage from the lone star tick is illustrated at different healing stages. In tests of cattle exposed to severe infestations of parasites under natural conditions, the shortnosed cattle louse caused no significant grain damage inleather ; horse flies and deer flies caused slight but consistent, and possibly significant, damage ; and incidentally occuring demodectic mites caused moderate to severe damage to some of the hides. The detailed nature of the damage is illustrated. Investigation of the mite infestations provided useful information on the transmission of demodectic (follicular) mange, or demodicosis. Note de contenu : - EXPERIMENTAL PROCEDURES : Test organisms - Test cattle - Test hides - Fly andmosquito test - Louse test - Tick test - RESULTS AND DISCUSSION : Effects of flies, mosquitoes, and lice - Effect of demodectic mites - Effects of ticks - Table 1 : Identification of ectoparasites tested on cattle - Table 2 : Treatments applied to cattle in four separate tests - Table 3 : Biting flies counted on test steers - Table 4 : Deer and horse flies trapped at remote pasture in 1973 - Table 5 : Evaluation of hide and leather damage from ectoparasites En ligne : https://drive.google.com/file/d/1cduH7h7Bdt4FIMzI62TxgBqsZrmaRmZz/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38254 [article]

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