2012 ©
             Publication
Journal Publication
Title of Article Corpora Lutea Growth and Development in Thai-native Goats Throughout the Estrous Cycle 
Date of Acceptance 11 September 2012 
Journal
     Title of Journal Chiang Mai University Journal of Natural Sciences (CMUJ of Nat.Sci.)  
     Standard SCOPUS 
     Institute of Journal คณะสัตวแพทยศาสตร์ มหาวิทยาลัยเชียงใหม่ 
     ISBN/ISSN  
     Volume 2012 
     Issue 11 
     Month กันยายน
     Year of Publication 2016 
     Page 455-459 
     Abstract This study was conducted to determine the growth and development of corpora lutea (CL) in Thai-native goats throughout the estrous cycle. Non pregnant Thai-native goats (n=12), 8 months of age were randomly assigned for estrous synchronization and superovulation protocols (progesterone 14 days+PMSG vs. progesterone 14 days+FSH). After progesterone removal, goats underwent laparotomy to determine number of CL post ovulation at 24, 48, 72 and 96 h. Blood sample were taken for progesterone concentration throughout the estrous cycle. Number of CL in goats receiving the protocols were not significantly different at times after ovulation (P>0.05) except for at 24 h (P=0.04). Concentration of plasma progesterone (P4) were not significantly different among goats difference in CL numbers (1, 2 and 3), with the concentration of 6.36, 5.45 and 5.72 ng/ml respectively. Plasma P4 concentrations of goats were low (<1 ng/ml) during the first 5 days of the estrous cycle, but significantly increased by day 7 (2.05 ng/ml), due to the presence of the developing CL. By day 19, the P4 concentration was less than 1 ng/ ml due to the regression of CL. Goats underwent laparotomy to collect the ovary and CL using bilateral ovariectomy. Fresh weight of ovaries and CL were 841.8±164.47 and 311.75±63.59 mg, respectively. Percentages of ovarian weight represented by luteal and non-luteal tissues were 43.93 and 56.07%, respectively. The study was also indicated that estrous synchronization and superovulation protocols were not affected the number of CL. In addition, growth and development of CL gradually increased in early, but rapidly increased in mature or growing CL until day 13 or 14 due to the peak of P4 concentration. The regression of CL or luteolysis occurred between day 16 or 17 due to the secretion of PGF2α. 
     Keyword Corpora lutea, Growth and development, Thai-native goat 
Author
527030006-6 Mr. JIRATTI THAMMASIRI [Main Author]
Agriculture Doctoral Degree
517030009-9 Mr. TOSSAPOL MOONMANEE
Agriculture Doctoral Degree
567030010-9 Miss VILAIVAN KHANTHUSAENG
Agriculture Doctoral Degree
535030028-3 Act.Sub-Lt. SARUTTIWONG BOONKONG
Agriculture Master's Degree

Reviewing Status มีผู้ประเมินอิสระ 
Status ตีพิมพ์แล้ว 
Level of Publication นานาชาติ 
citation false 
Part of thesis true 
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