Publikationsdatenbank

Lohmann Dual: A dual-purpose chicken as an alternative to commercial broiler chicken? Aspects of meat quality, lipid oxidation, shear force and muscle structure (2018)

Art

Zeitschriftenartikel / wissenschaftlicher Beitrag

Autoren

Siekmann, L.

Wigger, R.

Urban, J. (WE 4)

Zentek, Jürgen (WE 4)

Krischek, C.

Quelle

European Poultry Science

Bandzählung: 82

Seiten: 1 – 7

ISSN: 1612-9199

Sprache

Englisch

Verweise

DOI: 10.1399/eps.2018.254

Kontakt

Institut für Tierernährung

Königin-Luise-Str. 49
14195 Berlin
+49 30 838 52256
tierernaehrung@vetmed.fu-berlin.de

Abstract / Zusammenfassung

In Germany, more than 40 million layer cockerels are culled as day-old based on economic inefficiency. Due to animal welfare and ethical concerns investigations which apply to alternatives of culling become recently more important. The interest on utilizing dual-purpose breeds is growing and as far as we know, only rare reviewed data are published concerning meat quality. This paper compares the meat quality and performance of the dual-purpose breed Lohmann Dual (LD) and the standard broiler Ross 308. Both breeds were hatched to a similar weight and slaughtered at 35 and 63 days of age for Ross and LD respectively. Ross broiler performed superior in breast weight and yield, but higher leg values were aimed by the dual-purpose breed. At 24 h post mortem (p.m.), meat quality differed significantly in breast muscle: LD showed higher pH values, higher electrical conductivity, but a lower cooking loss. Ross muscle were lighter, more red and more yellow, whereas no differences were found in shear force values as well as drip loss over 72 h of storage and thawing loss of breast meat. In leg meat, all parameters differed significantly: Again, pH values were higher for LD, whereas Ross showed higher electrical conductivity, lighter, more red and more yellow leg meat. Histological examination offered differences exclusively being present in breast muscle: values were higher in Ross animals (e.g. capillaries/fiber, fiber/mm², fiber area), but fiber diameter was not different. For thiobarbituric acid-reactive substances higher values were found in breast meat of Ross (48 h p.m.). No differences occurred in leg muscle. With a similar content of myoglobin, forms of myoglobin differed with oppositional results for leg and breast muscle of each breed. To sum up, meat of LD showed its own characteristics and further investigation should be undertaken to improve the performance of these dual-purpose breed.