Histology and Histomorphometry of the Tibial Diaphyseal Growth in Two Turkey Strains during the First Six Weeks after Hatching

Abstract

The comparative cortical growth of the tibio-tarsus was studied during the first six weeks after hatching in two turkey strains, a light and a heavy one. At one day post-hatching the cortical appeared to be constituted in both strains of an embryonic non-active fibrous bone tissue which had completely disappeared at one week. On and after one week the cortex was constituted of a fibrolamellar adult bone tissue elaborated on the periosteal part of the cortex. Its vascular pattern depended on the strain and on the thickness of the cortical faces. The histomorphometric studies showed that the growth in thickness was earlier and faster in the heavy strain with a Total Diaphyseal Surface twice larger at 6 weeks but a Diaphyseal Cortical Ratio not significantly different since 3 weeks of age.

Assessing a relationship between bone microstructure and growth rate: a fluorescent labelling study in the king penguin chick (Aptenodytes patagonicus)

“…139) already hypothesised that radial primary osteonal orientation could be the signature of very rapid bone growth. Moreover, in aviculture, radial bone is observed in the limb bones of birds artificially selected for rapid growth (Dämmrich and Rodenhoff, 1970;Itakura and Yamagiwa, 1970;Leblanc et al, 1986;Leterrier and Nys, 1992;Wyers et al, 1993). Finally, radial bone has not been observed in growth series of mallard (Castanet et al, 1996;de Margerie et al, 2002), ostrich (Struthio camelus) or emu (Dromaius novaehollandiae; Castanet et al, 2000), where growth rates did not attain the highest values measured here in the king penguin.…”

Étude comparée de la croissance osseuse diaphysaire du tibia entre 3 et 12 semaines dans 2 souches de dindes : aspects histologiques et histomorphométriques

“…Nos résultats confirment que, chez la dinde (Leblanc et al, 1986 ;Wyers et al, 1993) comme chez le poulet (Pratt, 1961 ;Sandhu et (Wyers et al, 1993 (Wyers et al, 1993) pour dépasser le double de la surface de la diaphyse de la souche fermière à l'âge de 5 sem. Les écarts de surface entre les 2 souches s'accentuent ensuite avec l'âge parallèlement à l'augmentation beaucoup plus rapide du poids chez les animaux de souche lourde (fig 7).…”

“…Une étude histologique générale de la croissance du tibia (Leblanc et al, 1986) a montré des différences à certains âges entre les 2 souches aussi bien de la croissance en longueur que de la croissance en épaisseur de l'os. Une étude plus récente (Wyers et al, 1993) (Leblanc et al, 1986).…”

“…Les différences précoces de la croissance diaphysaire ont été confirmées dans une étude ultérieure chez des animaux âgés de 1 j à 6 sem (Wyers et al, 1993 (Chérel et al, 1991 …”