Publikationsdatenbank

Microcomputed tomographic analysis of the tibiotarsus:
comparison between a dual-purpose and a broiler chicken line (2019)

Art

Poster

Autoren

Harash, George (WE 1)

Hünigen, Hana (WE 1)

Hafez, M. Hafez (WE 15)

Plendl, Johanna (WE 1)

Al-Masri, Salah (WE 1)

Kongress

The 10th meeting of Young Generation of Veterinary Anatomists

Bukarest, 24. – 26.07.2019

Quelle

Proceedings : the 10th Meeting of the Young Generation of Veterinary Anatomists – YGVA 2019 : July 24 – 26, 2019 București, România — Meeting of the Young Generation of Veterinary Anatomists ; Florin Stǎnicǎ (Hrsg.)

Bucureşti: Ex Terra Aurum, 2019 — S. 98–99

ISBN: 978-606-8974-15-6

Sprache

Englisch

Verweise

URL (Volltext): https://ygva2019.usamv.ro/ygva-files/YGVA%202019%20Proceedings.pdf

Kontakt

Nutztierklinik: Abteilung Geflügel

Königsweg 63
14163 Berlin
+49 30 838 62676
gefluegelkrankheiten@vetmed.fu-berlin.de

Abstract / Zusammenfassung

Introduction:
Selection for rapid growth of modern broilers has resulted in occurrence of performance-related disorders, such as leg disorders. Deficits in bone mineral density and structure can severely impair animal welfare, reducing broiler growth and increasing mortality. This study aimed to evaluate the trabecular and cortical microstructural properties of the tibiotarsus of novel dual-purpose chickens (Lohmann Dual, LD) compared with conventional broiler (Ross 308)
chickens using microcomputed tomography (μCT).

Materials and Methods:
One-day-old male chicks (LD=30, Ross=24) were used. Six birds of each chicken line were sampled and weighed on days 1, 7, 21 and 35, in addition d 63 for LD birds. The mass of the tibiotarsus per unit of length was calculated.
Microstructural properties of trabecular and cortical bone were examined using µCT analysis. Trabecular thickness (mm) and trabecular number per mm
of bone length were measured at the proximal metaphyseal region. Cortical bone analysis [cortical bone area (mm²), total cross-sectional area (mm²) and
cortical area fraction (%)] was performed at the diaphyseal region.
Additionally, the bone mineral density (BMD) of both trabecular and cortical bone (mg/cm³) were determined. Data of chicken lines was compared using
Mann Witney test. P value of < 0.05 was considered significant.

Results and Discussions:
The trabecular number per mm decreased with age in both chicken lines, while the trabecular thickness did not differ. In both chicken lines, the bone mass per unit of length correlated positively (R=0.84) with the cortical and trabecular BMD and booth parameters increased with age. At all ages, LD chickens had a lower cortical bone area, subsequently a lower bone mass per unit of length than that of Ross chickens. The greater cortical bone area of Ross’s tibiotarsus could be a result of bone adaptation to withstand greater BW. However, the BMD of both trabecular and cortical bones was similar in both chicken lines.

Conclusion:
Considering the body weight, the similar microstructural properties of the tibiotarsus between LD and Ross chicken lines reveals a physiological
tibiotarsus growth in LD chickens.