Confirmation of the recessive mode of inheritance of the vertical fibre hide structure in hereford cattle / J. H. Dufty in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 68 (Année 1984)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 68 (Année 1984) . - p. 35 Titre : Confirmation of the recessive mode of inheritance of the vertical fibre hide structure in hereford cattle Type de document : texte imprimé Auteurs : J. H. Dufty, Auteur ; D. E. Peters, Auteur Année de publication : 1984 Article en page(s) : p. 35 Langues : Anglais (eng) Catégories : Bovins -- Races Cuirs et peaux -- Analyse Cuirs et peaux de veaux Peau -- Anatomie Index. décimale : 675 Technologie du cuir et de la fourrure Note de contenu : - Table : Approximate age at which the vertical fibre hide condition was identified in hereford calves En ligne : https://drive.google.com/file/d/1EZ0ZiPYfJ1qjB9vlZJ5Q-Lsf3yUQ_rvP/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34146 [article]

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Studies of the cause of the vertical fibre hide structure in hereford cattle hide / J. H. Dufty in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 67 (Année 1983)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 67 (Année 1983) . - p. 70-73 Titre : Studies of the cause of the vertical fibre hide structure in hereford cattle hide Type de document : texte imprimé Auteurs : J. H. Dufty, Auteur ; D. E. Peters, Auteur ; J. H. Bavinton, Auteur Année de publication : 1983 Article en page(s) : p. 70-73 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Analyse Cuirs et peaux de bovins Peaux brutes -- Structure Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The cause of the vertical fibre hide structure and the factors influencing its prevalence were studied in 362 Hereford cattle. The condition wasdiagnosed in 83 (22,9 %) cattle and was not affected by the sex of the animal, the year and season of its birth, gestation period, birthweight, or the presence or absence of horns, nor by the age, parity and weight of the dam. Significant differences in the frequency of the condition were found in animals grouped according to their sires or dams and evidence was obtained that the condition was due to the presence, in a homozygous state, of an autosomal recessive gene. Note de contenu : - MATERIALS AND METHODS : Animals - Feed - Management and bredding - Skin sampling - Experimental studies - RESULTS : Factors influencing the prevalence of vertical fibre in hides - Table 1 : Prevalence of the vertical fibre hide structure in 362 Hereford cattle classified according in their sire - Table 2 : Prevalence of the vertical fibre hide structure in 281 Hereford cattle classified according to their sex and sire - Table 3 : Prevalence of the vertical fibre hide structure in Hereford cattle classified according to their sire and year and season of birth - Table 4 : Frequency of hide types in the offspring of 64 Hereford cows mated in each case to the same bull for two successive years - Table 5 : Post-calving weight (kg) of dam and birthweight (kg) and gestation period (days) of offspring classified according to the hide type of both animals - Table 6 : Frequency of the vertical fibre hide condition in families of various sizes where at least one affected offspring was produced by parents with a non-vertical hide En ligne : https://drive.google.com/file/d/1CUsCyKMT6mL-yeRkOjrKOe_UFT5dzfQH/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34188 [article]

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The effectiveness of selective breeding for reducing the incidence of the vertical fibre hide condition in heredord cattle / D. E. Peters in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXX (Année 1985)

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXX (Année 1985) . - p. 42-46 Titre : The effectiveness of selective breeding for reducing the incidence of the vertical fibre hide condition in heredord cattle Type de document : texte imprimé Auteurs : D. E. Peters, Auteur ; J. H. Dufty, Auteur Année de publication : 1985 Article en page(s) : p. 42-46 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Our work on the vertical fibre hide condition in Hereford cattle (1,2) has indicated that this condition is not controlled by genes at a number of separately segregating loci but is due to the presence, in a homozygous state, of either an autosomal recessive gene or a number of genes at tightly linked loci. As a result of this finding, we have examined the effect of various breeding programs on the frequency of the vertical fibre hide condition in a herd over a period of ten generations to determine if this is a practical method of reducing the incidence of the condition. The selection programms considered for this purpose were: 1) the removal of all affected animals from the herd, 2) the removal of all affected sires only, 3) the use of known homozygous normal sires. In the work described below, animals which show the condition, determined using techniques described previously (3), are considered to be homozygous, while those which are not affected are either heterozygous (carriers) or are homozygous normal (i.e having one or no gene for vertical fibre, respectively). Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9246 [article]

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The reproductive performance of hereford cattle affected with the vertical fiber hide defect / J. H. Dufty in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXVI (Année 1981)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXVI (Année 1981) . - p. 482- 492 Titre : The reproductive performance of hereford cattle affected with the vertical fiber hide defect Type de document : texte imprimé Auteurs : J. H. Dufty, Auteur ; D. E. Peters, Auteur ; J. H. Bavinton, Auteur Année de publication : 1981 Article en page(s) : p. 482- 492 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : A study was made in retrospect on the calving performance of 119 Hereford cattle in relation to the presence or absence of th vertical fiber hide defect or an intermediate form of this condition. No difference of dystocias (calving problems) or stillbirths. The analysis of more detailed records obtained from 91 of these animals when they first entered the breeding herd also failed to reveal any significant differences among groups in the overall level of fertility. These results are contrasted with those obtained by others who have studied the problem. Note de contenu : - EXPERIMENTAL : Animals - Feed - Breeding - Skin sampling - Terms and definitions - Statistical analysis - RESULTS : Frequency of hide types - Incidence of abnormal calvings - Type of dystocias - Maternal and fetal calf losses - Fertility levels of heifers En ligne : https://drive.google.com/file/d/1tFvn8XtzWFwKISMC-jwiv86-gjG0XABL/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17696 [article]

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