Temperature effect on proliferation and differentiation of satellite cells from turkeys with different growth rates

Poultry Science
Daniel L ClarkSandra G Velleman

Abstract

Poultry selected for growth have an inefficient thermoregulatory system and are more sensitive to temperature extremes. Satellite cells are precursors to skeletal muscle and mediate all posthatch muscle growth. Their physiological functions are affected by temperature. The objective of the current study was to determine how temperature affects satellite cells isolated from the pectoralis major (p. major) muscle (breast muscle) of turkeys selected for increased 16 wk body weight (F line) in comparison to a randombred control line (RBC2) from which the F line originated. Pectoralis major muscle satellite cells were thermally challenged by culturing between 33°C and 43°C to analyze the effects of cold and heat on proliferation and differentiation as compared to control temperature of 38°C. Expression levels of myogenic regulatory factors: myogenic differentiation factor 1 (MYOD1) and myogenin (MYOG) were quantified by quantitative polymerase chain reaction (qPCR). At all sampling times, proliferation increased at a linear rate across temperature in both the RBC2 and F lines. Differentiation also increased at a linear rate across temperature from 33 to 41°C at all sampling times in both the F and RBC2 lines. Satellite cells isolate...Continue Reading

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Citations

Sep 27, 2018·Annual Review of Animal Biosciences·Sandra G Velleman
Nov 6, 2020·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Jiahui XuSandra G Velleman
Sep 14, 2021·Journal of Experimental Zoology. Part A, Ecological and Integrative Physiology·Aliyah D De Jesus, Ana Gabriela Jimenez

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