HISTOLOGICAL CHANGES IN CHICKEN AFTER FREEZING AT - 20°C AND - 40°C | ||||
| Assiut Veterinary Medical Journal | ||||
| Article 8, Volume 32.1, Issue 63, October 1994, Page 82-94 PDF (3.81 MB) | ||||
| Document Type: Research article | ||||
| DOI: 10.21608/avmj.1994.185772 | ||||
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| Authors | ||||
| M.N. EL-GHAZALI; S.I. EL-SYIAD; Sh. M. FATHI | ||||
| Abstract | ||||
| Fiber diameters of breast (Pectoralis Sup < /em>erficials), thigh (Glutaeus sup < /em>erficials) and drumstick (Gastro cnemius) muscles of cobb chicken (8 weeks age) were shorted with decreasing the temperature, whereas, they were shorted at -40 C more than at-20C, while, sarcomere lengths were increased after freezing of chicken muscles under investigation at -40 C more than at -20 °C. Concerning hardness factor (H.F.), it was decreased, while tendreness factor (T.F.) was increased after freezing at -40 C more than at -20 °C. Histological changes, including nodes, internodes, fissures, waves, splitting within fiber, kinks, kracks and spaces between bundles were increased in freezing method at-40 C more than at -20 °C. On the other hand, size and shape of bundles and collagenous flbers were decreased in freezing the examined muscle samples at -40 °C rather than at -20 | ||||
| Keywords | ||||
| Histological; chicken; muscles; freezing | ||||
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