This experiment was aimed to investigate some changes of ovarian structure in order to confirm the onset of puberty in Thai indigenous gilts. Fifty female animals collected from the North-Eastern area of Thailand were...This experiment was aimed to investigate some changes of ovarian structure in order to confirm the onset of puberty in Thai indigenous gilts. Fifty female animals collected from the North-Eastern area of Thailand were slaughtered in the different age groups as 0, 1, 2, 3, 3.5, 4, 4.5, 5, 5.5 and 6 months of age, respectively （each group = 5 pigs）, for monitoring corpus luteum （CL） occurrence on ovarian surface and some changes of reproductive structure. CL was clearly found for the first time in the 4.5 months age group （P 〈 0.05） which was defined as the first ovulation; nevertheless, group of follicles with 〉 2.0 mm in diameter appeared for the first time in the 3.5 month age group （P 〈 0.05）. For other conformations, size of uterine horns, oviducts or ovaries, including weight of ovaries or whole reproductive tracts, were significantly developed （P 〈 0.05） that was initially taken place in the 3.5 months age group onwards. Thus, it was summarized that the onset of puberty in Thai indigenous gilts, affirmed by CL appearance at the first time, should be happened between 4.0 and 4.5 months of age; however, the development of reproductive structure and follicles to prepare in approaching puberty should be started before 3.5 months of age.展开更多
文摘3月17日,Aviza宣布该公司已经选定春泰可科技公司(Tritek Technologies)在中国分销和支持Aviza科技公司的设备。春泰可科技公司有超过25年在中国分销和支持半导体设备的经验,现在负责向中国半导体制造商提供全套的Aviza科技公司产品,包括垂直扩散炉、常压化学沉积(APCVD)和原子层沉积(ALD)技术解决方案,自能胜任愉快。Aviza科技公司的总裁兼CEO Jerry
文摘This experiment was aimed to investigate some changes of ovarian structure in order to confirm the onset of puberty in Thai indigenous gilts. Fifty female animals collected from the North-Eastern area of Thailand were slaughtered in the different age groups as 0, 1, 2, 3, 3.5, 4, 4.5, 5, 5.5 and 6 months of age, respectively （each group = 5 pigs）, for monitoring corpus luteum （CL） occurrence on ovarian surface and some changes of reproductive structure. CL was clearly found for the first time in the 4.5 months age group （P 〈 0.05） which was defined as the first ovulation; nevertheless, group of follicles with 〉 2.0 mm in diameter appeared for the first time in the 3.5 month age group （P 〈 0.05）. For other conformations, size of uterine horns, oviducts or ovaries, including weight of ovaries or whole reproductive tracts, were significantly developed （P 〈 0.05） that was initially taken place in the 3.5 months age group onwards. Thus, it was summarized that the onset of puberty in Thai indigenous gilts, affirmed by CL appearance at the first time, should be happened between 4.0 and 4.5 months of age; however, the development of reproductive structure and follicles to prepare in approaching puberty should be started before 3.5 months of age.
