Basic morphometry, microcomputed tomography and mechanical evaluation of the tibiotarsal bone of a dual-purpose and a broiler chicken line

Autor: George Harash, Hana Hünigen, Johanna Plendl, Zaher Alshamy, Salah Al Masri, Kenneth C. Richardson, Hafez M. Hafez
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Male
Aging
X-ray microtomography
Critical Care and Emergency Medicine
Bone density
Appendicular skeleton
Physiology
mechanical properties
Poultry
Bones of Lower Extremity
bone and joint mechanics
Medicine and Health Sciences
Gamefowl
Biomechanics
Trauma Medicine
0303 health sciences
Multidisciplinary
Physics
Eukaryota
Classical Mechanics
bone density
04 agricultural and veterinary sciences
bending
Deformation
medicine.anatomical_structure
bone fracture
Physiological Parameters
Connective Tissue
Vertebrates
Physical Sciences
embryonic structures
Medicine
Anatomy
Traumatic Injury
600 Technik
Medizin
angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit
Research Article
animal structures
Tibiotarsus
Science
Materials Science
Material Properties
Biology
03 medical and health sciences
body weight
Animal science
parasitic diseases
medicine
Animals
Bone
030304 developmental biology
Damage Mechanics
Hatching
0402 animal and dairy science
Broiler
Organisms
Biology and Life Sciences
500 Naturwissenschaften und Mathematik::590 Tiere (Zoologie)::590 Tiere (Zoologie)
Bone fracture
X-Ray Microtomography
medicine.disease
040201 dairy & animal science
Biological Tissue
Fowl
birds
Amniotes
chickens
Cortical bone
Stress
Mechanical
Zdroj: PLoS ONE, Vol 15, Iss 3, p e0230070 (2020)
PLoS ONE
ISSN: 1932-6203
Popis: Continuous loading of the skeleton by the body’s weight is an important factor in establishing and maintaining bone morphology, architecture and strength. However, in fast-growing chickens the appendicular skeleton growth is suboptimal making these chickens predisposed to skeletal mineralization disorders and fractures. This study compared the macro- and microstructure as well as the mechanical properties of the tibiotarsus of a novel dual-purpose, Lohmann Dual (LD) and a highly developed broiler, Ross (Ross 308) chicken line. Eighty one-day-old male chicks of each line were grown until their body weight (BW) reached 2000g. Starting at the day of hatching, six birds of each line were sampled weekly. The weight, length and width of the tibiotarsus were measured and its mechanical properties (rigidity, M-Max and the M-fracture) were evaluated using the three-point bending test. Additionally, the mineral density of both, trabecular and cortical bone, the bone volume fraction, the trabecular number, thickness and separation plus cortical thickness of both chicken lines were analyzed using microcomputed tomography. The growth of the tibiotarsus in both chicken lines followed a similar pattern. At the same age, the lighter LD chickens had shorter, thinner and lighter tibiotarsi than those of Ross chickens. However, the LD chickens had a similar cortical thickness, bone volume fraction and similar mineral density of both trabecular and cortical bone to that of Ross chickens. Furthermore, the tibiotarsus of LD chickens was longer, heavier and wider than those of Ross chickens of the same BW. In addition the rigidity of the LD tibiotarsus was greater than that of Ross chickens. This suggests that the tibiotarsus of LD chickens had more bending resistance than those of Ross chickens of the same BW. Consequently, fattening LD chickens to the marketable weight should not affect their leg skeleton stability.
Databáze: OpenAIRE
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