Characterization of Increased Muscle Growth in a Heavy Weight Line of Japanese Quail
| Main Author: | |
|---|---|
| Language: | English |
| Published: |
The Ohio State University / OhioLINK
2011
|
| Subjects: | |
| Online Access: | http://rave.ohiolink.edu/etdc/view?acc_num=osu1316455908 |
| id |
ndltd-OhioLink-oai-etd.ohiolink.edu-osu1316455908 |
|---|---|
| record_format |
oai_dc |
| spelling |
ndltd-OhioLink-oai-etd.ohiolink.edu-osu13164559082021-08-03T06:04:03Z Characterization of Increased Muscle Growth in a Heavy Weight Line of Japanese Quail Donley, Sarah Animal Sciences hypertrophy hyperplasia quail myogenesis The poultry industry is of great economic importance in the United States. Increasing the muscle yield of poultry is of great interest to the poultry industry, but the mechanisms that control muscle growth and development are not fully understood. Broiler-type chickens and turkey have been shown to have increased muscle yield, especially pectoral muscle (breast muscle), and this increased muscularity has been shown to be due to increased muscle fiber number (hyperplasia) and/or increased muscle fiber size (hypertrophy). Some lines of quail have been shown to have similarly increased pectoral muscle size, and to exhibit hypertrophy or hyperplasia. However, the heavy weight (HW) line of quail has not been characterized, and is of particular interest as previous studies indicate a possible increase in pectoral muscle size relative to body weight compared to a control line. Embryonic and posthatch growth curves are reported here for the HW line as well as a control line (RBC). HW quail show an initially smaller size, but quickly surpass RBC line quail during embryonic growth. At hatch, HW quail are significantly larger than RBC, and continue to grow more quickly than RBC quail, to a 2.3 fold increase compared to RBC at 85 days posthatch. The HW line also shows an increased right pectoralis major (r. p. major) size and weight compared to the RBC line from posthatch day 4, and is a greater percentage of body weight by day 8 posthatch. By day 85 posthatch, the HW r. p. major is 2.7 times larger than that of the RBC. The HW r. p. major has more DNA than the RBC from the day of hatch, indicating the presence of more nuclei, and probably a greater cell number. At day 15 posthatch, the HW r. p. major has 1.6 fold more fibers than the RBC r. p. major, and the mean fiber cross-sectional area is 3.6 fold larger. By day 85, the RBC fiber cross-sectional area is 471.45μm2 and the HW is 839.22μm2. No significant differences were seen in satellite cell proliferation rates at day 6 or 15 posthatch, although the HW line has a greater number of cells at day 6 posthatch. Further study would be required to determine whether satellite cell proliferation differences are a factor in the muscle growth differences seen in HW and RBC quail in earlier or later development. The increased size of HW muscle is due both to hypertrophy and hyperplasia. 2011-10-21 English text The Ohio State University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=osu1316455908 http://rave.ohiolink.edu/etdc/view?acc_num=osu1316455908 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws. |
| collection |
NDLTD |
| language |
English |
| sources |
NDLTD |
| topic |
Animal Sciences hypertrophy hyperplasia quail myogenesis |
| spellingShingle |
Animal Sciences hypertrophy hyperplasia quail myogenesis Donley, Sarah Characterization of Increased Muscle Growth in a Heavy Weight Line of Japanese Quail |
| author |
Donley, Sarah |
| author_facet |
Donley, Sarah |
| author_sort |
Donley, Sarah |
| title |
Characterization of Increased Muscle Growth in a Heavy Weight Line of Japanese Quail |
| title_short |
Characterization of Increased Muscle Growth in a Heavy Weight Line of Japanese Quail |
| title_full |
Characterization of Increased Muscle Growth in a Heavy Weight Line of Japanese Quail |
| title_fullStr |
Characterization of Increased Muscle Growth in a Heavy Weight Line of Japanese Quail |
| title_full_unstemmed |
Characterization of Increased Muscle Growth in a Heavy Weight Line of Japanese Quail |
| title_sort |
characterization of increased muscle growth in a heavy weight line of japanese quail |
| publisher |
The Ohio State University / OhioLINK |
| publishDate |
2011 |
| url |
http://rave.ohiolink.edu/etdc/view?acc_num=osu1316455908 |
| work_keys_str_mv |
AT donleysarah characterizationofincreasedmusclegrowthinaheavyweightlineofjapanesequail |
| _version_ |
1719430272710082560 |