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Hide and leather characteristics of afrikaner and friesland bulls and steers slaughtered at various ages between birth and 24 months / Alan E. Russell in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 61, N° 1 (01-02/1977)
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Titre : Hide and leather characteristics of afrikaner and friesland bulls and steers slaughtered at various ages between birth and 24 months Type de document : texte imprimé Auteurs : Alan E. Russell, Auteur ; A. C. Galloway, Auteur ; R. L. Boccard, Auteur ; R. T. Naudé, Auteur Année de publication : 1977 Article en page(s) : p. 1-10 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bovins -- Races
Caractérisation
Cuirs et peaux -- Analyse
Cuirs et peaux de bovins
Mesures de rendementIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Investigation of the influence of breed, sex and age factors on hide and leather characteristics indicates that when young Afrikaner and Friesland bulls and steers are reared under intensive feedlot conditions, bulls have a higher yield of green hide mass than steers and exhibit more favourable leather properties than steers, especially with regard to tensile strength in Friesland bulls. With the onset of sexual maturity in bulls after 12 months of age, accompanying changes in leather physical properties were apparent and tensile strength showed a decline particularly in Friesland bull leathers. These changes in hide physical properties appear to parallel increases in the level of natural crosslinking of the collagen molecular structure during ageing and maturation. Main differences between the two breeds studied were that Afrikaner animals were superior in terms of hide and leather yield whereas the leather of Friesland cattle was qualitatively superior. Note de contenu : - EXPERIMENTAL : Yield measurements - Leather physical tests
- RESULTS : Yield measurements - Leather physical testsEn ligne : https://drive.google.com/file/d/1FtMtn1fZb-Y9MSws82wym_0sEszL0Hjr/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31878
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 61, N° 1 (01-02/1977) . - p. 1-10[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 007110 - Périodique Bibliothèque principale Documentaires Disponible Hide and leather characteristics of young afrikaner-type steers slaughtered at four different live masses / Alan E. Russell in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 64, N° 1 (01-02/1980)
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Titre : Hide and leather characteristics of young afrikaner-type steers slaughtered at four different live masses Type de document : texte imprimé Auteurs : Alan E. Russell, Auteur ; A. C. Galloway, Auteur ; R. T. Naudé, Auteur ; Anne-Dorothée Argo, Auteur ; H. J. Venter, Auteur Année de publication : 1980 Article en page(s) : p. 9-15 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Animaux -- Alimentation
Cuirs et peaux -- Analyse
Cuirs et peaux -- Propriétés mécaniques
Cuirs et peaux de bovins
StatistiquesIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Hide characteristics and leather properties have been examined in hides obtained from young, crossbred Afrikaner-type steers of varying carcase mass. For this purpose, certain animais were fed ad lib. on a concentrate ration while the feed intake of others was restricted, in order to attain various prescribed masses. The experimental animals included three breed types and four carcase-mass groups in which resulting hide and leather qualifies could be examined and compared. Green hide mass in relation to carcase mass decreased sharply after weaning in animals maintained on a low nutritional plane in contrast with animals growing rapidly where relative hide mass increased with live mass gain. Leather area yield in relation to green hide mass tended to remain unchanged in the nutritionally restricted group after weaning, but decreased progressively in full fed animals due to the relatively rapid increase in hide thickness compared with hide area as live mass increased. Upper leather physical tests on the resulting full-grain leathers showed a general marked inflection point in the nutritionally restricted group of animals. Thus, leather extensibility, tensile strength and suit tear force tended to be substantially higher in this group and decreased progressively with increasing live mass in other groups. The significance of these changes in leather properties is discussed in relation to the interruption in the normal growth pattern in the experimental animals. Note de contenu : - EXPERIMENTAL : Statistical plan - Factors varied - Conditions of rearing - a. Yield measurements - b. Leather physical tests
- RESULTS AND DISCUSSION : Hide yield (green hide mass-carcase mass ratio - Leather yield (leather area-green hide mass ratio) - Leather tensile properties - Still tear force - Lastometer testsEn ligne : https://drive.google.com/file/d/1RZM7aNbeu7K5BgRELJoNDYFhjNVx5NMd/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34132
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 64, N° 1 (01-02/1980) . - p. 9-15[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 007125 - Périodique Bibliothèque principale Documentaires Disponible Hide defects of feedlot cattle : Assessment of cattle management, breed type, sex, live market weight, and source factors on hide quality / W. T. Wright in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVI, N° 4 (04/2021)
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Titre : Hide defects of feedlot cattle : Assessment of cattle management, breed type, sex, live market weight, and source factors on hide quality Type de document : texte imprimé Auteurs : W. T. Wright, Auteur ; C. R. Richardson, Auteur ; M. A. Bonds, Auteur ; G. V. Pollard, Auteur ; P. O. Sudharkaran, Auteur ; A. M. Gonzalez, Auteur ; S. P. Martinez, Auteur Année de publication : 2021 Article en page(s) : p. 126-134 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cuirs et peaux -- Défauts
Cuirs et peaux de bovins
EvaluationIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Twenty groups of finished feedlot cattle (thirteen steer groups, seven heifer groups) of known origin, breed type, sex and implant status were studied after marketing to determine the type and extent of hide defects as related to days on feed, live market weight, and hot carcass weight. Origin of cattle did not significantly influence the five hide characteristics evaluated (hide defects score, hide vein score, healed scratches, ringworm, and warts). Live weight and sex influenced the weight of the hides (P < 0.05), with steers being heavier and having heavier hides. Days on feed increased (P = 0.06) the amount of vein damage observed on the hides but was not sex related. Results from this study indicate that under typical commercial cattle feeding practices in Texas, hide defects differ among cattle under the same management and are related to the days on feed in the feedlot, which influences final market weight and degree of finish. Note de contenu : - Table 1 : Information collected about feeder cattle/feedlot cattle groups used in this study
- Table 2 : Example of comparative monetary values of main constituent parts of finished cattle
- Table 3 : Descriptive information about groups of cattle
- Table 4 : Frequency of brands across groups of cattle
- Table 5 : Summary of feedlot data
- Table 6 : Summary of carcass data
- Table 7 : Summary of hide defects dataDOI : https://doi.org/10.34314/jalca.v116i4.4284 En ligne : https://drive.google.com/file/d/1k8UDdC1WZIbNwyXejcmj2-sLFVnrbf9x/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35686
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXVI, N° 4 (04/2021) . - p. 126-134[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22710 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Hides and humidity Type de document : texte imprimé Auteurs : Michaela Schroepfer, Auteur ; Michael Meyer, Auteur Année de publication : 2017 Article en page(s) : p. 63-64 Langues : Anglais (eng) Catégories : Analyse thermique
Cuirs et peaux -- Propriétés thermiques
Cuirs et peaux de bovins
Humidité -- Mesure
Tannage au chrome
Wet-blue (tannage)Peau tannée au chrome (le chrome donne une couleur bleue)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The thermal behaviour of bovine skin and wet-blue in varying humidity can be measured by differential scanning calorimetry. The authors discusses the process. Note de contenu : - Materials and mathods
- Chromium-tanned collagen
- Dry state
- Fig. 1. DSC scans of untanned hides at different water contents
- Fig. 2. DSC scans of hide collagen tanned with chromium sulphate at different degrees of hydrationEn ligne : https://drive.google.com/file/d/1Yto3QO8aPrtvnAfBmlOqhXTVwSVlV9o3/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29048
in LEATHER INTERNATIONAL > Vol. 219, N° 4874 (09/2017) . - p. 63-64[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19113 - Périodique Bibliothèque principale Documentaires Disponible Hides and skins : temperature and physical change / Richard Daniels in WORLD LEATHER, Vol. 18, N° 5 (08/2005)
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Titre : Hides and skins : temperature and physical change Type de document : texte imprimé Auteurs : Richard Daniels, Auteur ; Walter Landmann, Auteur Année de publication : 2005 Article en page(s) : p. 44 Langues : Anglais (eng) Catégories : Cuirs et peaux -- Effets de la température
Cuirs et peaux -- Propriétés physiques
Cuirs et peaux de bovins
Elasticité
PlasticitéIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Temperature has a profound influence on the physical properties of hides and skins within every stage of leather manufacture. Apart from increasing the rate of a chemical process, a higher temperature will ease the ability of the skin to stretch under load.
An example is gien as Panel E5/1 where the extension of saturated bovine samples under constant load and rising temperature is shown. Moreover, as the temperature rises, there is an increasing tendency to remain in an extended state.Note de contenu : - Change in bound water
- Deformation of the polypeptide backbone
- Plastic-like behaviour and set as part of leather making
- Panel E5/1 : Effects of temperature on the extension of a sample under constant load
- Panel E5/2 :Loss tangent, tan δ, as a function of temperature for acetone-dried skin samples pre-conditioned in a given relative humidity environment (0, 35, 65% RH)
- Panel E5/3 : Definitions of elastic behaviour and plastic behaviourEn ligne : https://drive.google.com/file/d/11zUlk-yojrN0-_knp3OPvNxPX2RGH9bd/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32471
in WORLD LEATHER > Vol. 18, N° 5 (08/2005) . - p. 44[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 006185 - Périodique Bibliothèque principale Documentaires Disponible Histological analysis of the skin dermal components in bovine hides stored under different conditions / S. Montelli in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CX, N° 2 (02/2015)
PermalinkIdentification and characterisation of Aspergillus sp. from leather / Muhammad Ali in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 105, N° 6 (11-12/2021)
PermalinkIdentification and metabolic activities of bacterial species belonging to the enterobacteriaceae on salted cattle hides and sheep skins in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CX, N° 6 (06/2015)
PermalinkImpact du corroyage sur les performances des cuir / Anne-Laure Leprêtre in CTC ENTREPRISES, (10/2015)
PermalinkImprovement of leather flame retardancy through nano clay addition / Samaneh Sepehri in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXV, N° 11 (11/2020)
PermalinkImproving tearing resistance of leather - Part 1 prevention and treatment of low tearing strength in the tannery / Ricardo A. Tournier in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVI, N° 12 (12/2021)
PermalinkInfluence des caractères, du mode et de la durée de conservation de la peau brute sur sa dégradation par la pronase / A. Magat in TECHNICUIR, N° 7 (08-09/1973)
PermalinkInfluence of sweat on hide and leather / Keyong Tang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 91, N° 1 (01-02/2007)
PermalinkInfluence of various waterproofing agents on water and water vapour absorption and permeability / Z. Bajza in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 87, N° 4 (07-08/2003)
PermalinkInsights into the molecular composition of the skins and hides used in leather manufacture / Rafea Naffa in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 1 (01/2019)
PermalinkInvestigation of antibiotic-resistant enterobacteriaceae isolated from soaked sheepskins and cattle hides / Meral Birbir in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 103, N° 1 (01-02/2019)
PermalinkLeather property : looseness / Karl Flowers in INTERNATIONAL LEATHER MAKER (ILM), N° 37 (09-10/2019)
PermalinkLimiting microbial activity as an alternative approach of bovine hide preservation, Part I : Efficacy of developed formulations / Majher I. Sarker in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 7 (07/2019)
PermalinkMapping tear, strength and collagen fibril orientation in bovine, ovine and cervine hides and skins / S. J. Kelly in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 1 (01/2018)
PermalinkA matched-side comparative study of the unsplit blue stock and crust leather made from uncured and pit-cured hides / Stephen H. Feairheller in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXX (Année 1975)
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