Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.18805/ijar.v0iOF.9133 |
Pubertal changes in testicular parameters and secretion of testosterone in Najdi and Naemi ram lambs under desert conditions | |
Al-Kawmani, Ahmed A.1,2; Alfuraiji, Mansour M.1,2; Kandeal, Saleh A.1,2,3; Farah, Mohammad Abul1,2; Alanazi, Khalid Mashai1,2 | |
通讯作者 | Al-Kawmani, Ahmed A. |
来源期刊 | INDIAN JOURNAL OF ANIMAL RESEARCH
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ISSN | 0367-6722 |
出版年 | 2018 |
卷号 | 52期号:2页码:212-219 |
英文摘要 | The present work was conducted to elucidate the relationships between chronological age, testosterone concentration and testis size of Najdi and Naemi ram lambs under desert conditions to determine the reproductive capacity of the above two breeds. The postnatal development of the seminiferous epithelium of the testes was also monitored. A total of 90 (45 Najdi and 45 Naemi lambs) aged between one and nine months, with five lambs at each month of age for each breed were used. The results showed that the testosterone concentration increased dramatically and rapidly between five and six months, followed by a period of gradual growth where testicular size was increased from 3 to 6 months of age. There was a significant (P < 0.05) difference in testosterone concentration (TC) and testis size (TS) in ram lambs between different age groups, similarly there were significant differences between body weights and lamb age between one and nine months. A positive correlation between the increasing body weight and the size of the testicle was observed. The testicles of lambs at each age-group had a different histological appearance except those of Najdi lambs at 2, 3 and 4 months and Naemi lambs at 2, 3, 4 and 5 months, where few differences were apparent. Small quantities were of spermatozoa appeared at the eighth month of age and increased in the ninth month. In conclusion, the current findings indicate that puberty in Najdi and Naemi rams occurs at the 8th and 9th month of age, respectively. |
英文关键词 | Najdi Lambs Naemi Lambs Sexual Development Testicular Histology Testis Size Testosterone |
类型 | Article |
语种 | 英语 |
国家 | Saudi Arabia ; Egypt |
收录类别 | SCI-E |
WOS记录号 | WOS:000430650600007 |
WOS关键词 | SEXUAL PERFORMANCE ; BODY-WEIGHT ; AWASSI ; SHEEP ; AGE ; DIMENSIONS ; LIBIDO ; GROWTH ; TESTIS ; SIZE |
WOS类目 | Agriculture, Dairy & Animal Science |
WOS研究方向 | Agriculture |
来源机构 | King Saud University |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/210013 |
作者单位 | 1.King Saud Univ, Coll Food Sci & Agr, Dept Anim Prod, Riyadh, Saudi Arabia; 2.King Saud Univ, Dept Zool, Coll Sci, POB 2455, Riyadh 11451, Saudi Arabia; 3.Cairo Univ, Anim Prod Dept, Fac Agr, Giza, Egypt |
推荐引用方式 GB/T 7714 | Al-Kawmani, Ahmed A.,Alfuraiji, Mansour M.,Kandeal, Saleh A.,et al. Pubertal changes in testicular parameters and secretion of testosterone in Najdi and Naemi ram lambs under desert conditions[J]. King Saud University,2018,52(2):212-219. |
APA | Al-Kawmani, Ahmed A.,Alfuraiji, Mansour M.,Kandeal, Saleh A.,Farah, Mohammad Abul,&Alanazi, Khalid Mashai.(2018).Pubertal changes in testicular parameters and secretion of testosterone in Najdi and Naemi ram lambs under desert conditions.INDIAN JOURNAL OF ANIMAL RESEARCH,52(2),212-219. |
MLA | Al-Kawmani, Ahmed A.,et al."Pubertal changes in testicular parameters and secretion of testosterone in Najdi and Naemi ram lambs under desert conditions".INDIAN JOURNAL OF ANIMAL RESEARCH 52.2(2018):212-219. |
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