Seminal evaluation and cryopreservation of sperms from the pig“tailed macaque Macaca nemestrina

John Brian Payne, . and Yap Chee Kang, . and Zainal Zainuddin, . and Mohamed Reza Mohamed Tarmizi, . and Abdul Hamid Ahmad, . Seminal evaluation and cryopreservation of sperms from the pig“tailed macaque Macaca nemestrina. pp. 92-99. ISSN 2672-7226

Four wild adult pig“tailed macaques (Macaca nemestrina) were captured at Tabin Wildlife Reserve Sabah Malaysia and housed temporarily in cages for electro ejaculation and semen analysis. Testicular volumes ranged from 35.5 to 62.6 and correlated to the total testicular circumference and body weight. Out of 22 ejaculates five were azoospermic. The volume of ejaculates averaged 447 l. The low and high total sperm counts averaged 35.5 x 10�/ml and 310.9 x 100�/ml respectively. The lowest mean total sperm counts were 34.8 x 100�/ml and the highest 237.2 x 100�/ml. The pH of ejaculates ranged from 6.5 to 9.0. Two macaques showed good sperm motility with 73 normal sperm morphology. The average mean live-dead ratio was 65.7:34.3. The mean sperm abnormalities averaged 29.9. Coiled and bent tail constituted the highest amount of sperm abnormalities. There was no significant difference between semen volume using high or low voltages. The ejaculates consisted of a liquid fraction followed by a solid rubbery coagulum. The sperms had a strong tendency to agglutinate to small clumps of coagulum. The study is intended to provide information relevant to the application of assisted technology in endangered non-human primates.

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Abstract

Four wild adult pig“tailed macaques (Macaca nemestrina) were captured at Tabin Wildlife Reserve Sabah Malaysia and housed temporarily in cages for electro ejaculation and semen analysis. Testicular volumes ranged from 35.5 to 62.6 and correlated to the total testicular circumference and body weight. Out of 22 ejaculates five were azoospermic. The volume of ejaculates averaged 447 l. The low and high total sperm counts averaged 35.5 x 10�/ml and 310.9 x 100�/ml respectively. The lowest mean total sperm counts were 34.8 x 100�/ml and the highest 237.2 x 100�/ml. The pH of ejaculates ranged from 6.5 to 9.0. Two macaques showed good sperm motility with 73 normal sperm morphology. The average mean live-dead ratio was 65.7:34.3. The mean sperm abnormalities averaged 29.9. Coiled and bent tail constituted the highest amount of sperm abnormalities. There was no significant difference between semen volume using high or low voltages. The ejaculates consisted of a liquid fraction followed by a solid rubbery coagulum. The sperms had a strong tendency to agglutinate to small clumps of coagulum. The study is intended to provide information relevant to the application of assisted technology in endangered non-human primates.

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Item Type:	Article
AGROVOC Term:	Macaques
AGROVOC Term:	Macaca
AGROVOC Term:	Macaques
AGROVOC Term:	Evaluation
AGROVOC Term:	Semen collection
AGROVOC Term:	Electroejaculation
AGROVOC Term:	Cryopreservation
AGROVOC Term:	Sperm
AGROVOC Term:	Reproductivity
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:54
URI:	http://webagris.upm.edu.my/id/eprint/8305

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