Main Subjects : Reproduction Biotechnology

Role of spermatozoa in pH stability of caudal epididymis environment

Saleh W. Mahdi; Mahdi S. Al-Shamary; Zalzala S. Jaafir

Iraqi Journal of Veterinary Sciences, Volume 33, Issue 1, Pages 111-116
DOI: 10.33899/ijvs.2019.125511.1033

50 ram testicles where been collected directly after slaughtering, preserved in cool box (8-10°C) and transferred to the andrological lab at the Veterinary Medicine Collage / University of Baghdad. Samples were washed thoroughly with distal water stripped from surrounding tissues. Epididymis were separated from the entire testicles, caudae were cut out and injected with warm normal saline then sliced, pH was collected daily (4-5 days). Result showed that: as the preservative periods proceed, the pH of caudal secretions is elevated as (6.22, 6.35, 6.45, 6.65, 6.66, 6.7, 6.77) at (24, 36, 48, 60, 72, 84, 96 hrs) while total motility percentage are (90, 85, 84.5, 77, 75, 75, 70%). Cold preservation after slaughtering showed decreased motility as preservation proceed as well as total alive spermatozoa decreased. In conclusion caudal secretion turned to be more acidic if cold preservation time is prolonged and total alive spermatozoa number decreased while dead one increased.

Effect of vitamin E and selenium injection on semen quality and some blood parameters of Karadi rams

Mohannad Mahdi Hameed; Abdulnasir Alkhashab

Iraqi Journal of Veterinary Sciences, Volume 33, Issue 1, Pages 17-24
DOI: 10.33899/ijvs.2019.125554.1073

The Objective of this study was to determine the effect of vitamin E and selenium (Se) injection on semen characteristics and physiological and biochemical parameters of Karadi rams. fifteen Karadi Rams with average body weight 63 kg and 3-4 years of age were used in this study. The animals were randomly divided into three groups (5 rams / group) and the Rams were fed a standard diet equal in energy and protein and treated as follows. First control group, rams were injected with 1 ml normal saline once weekly. The second group, rams were injected with 2 ml (2.5 mg vitamin E plus 50 µg sodium selenite / kg body weight) once weekly. The third group rams were injected with 4 ml (5 mg vitamin E plus 100 µg sodium selenite /kg body weight) twice in week (2ml in one injection.) and the experiment continue for 3 months. Results revealed that treatment with vitamin E plus selenium Se led to a significant improvement (P≤0.05) on semen characteristics also a significant (P ≤ 0.05) increase in physiological and biochemical blood characters of Karadi Rams.

Assessment of different methods of bovine oocytes collection, maturation and Invitro fertilization of abattoir specimens

W.M. Saleh

Iraqi Journal of Veterinary Sciences, Volume 31, Issue 1, Pages 55-65
DOI: 10.33899/ijvs.2017.126711

The aim of this study is designed to evaluate the best methods for cow oocytes collection from abattoir specimens which is the cheapest, easily obtained and bulky number. Forty five fresh cow genitalia specimens and testicle were collected directly after slaughter from Al-Shoáalla abattoir north-west of Baghdad the capital early morning, transported in cool box under (4-8) °C to the laboratory of theriogenology in the college of veterinary medicine/Baghdad University during the period from November 2016 to February 2017. Ovaries were separated from the surrounding tissues, washed thoroughly with dis. water repeatedly, then with normal saline and finally with MEM medium containing Antibiotics and Nystatin for contaminant elimination. Oocytes were collected with four methods aspiration, slashing, slicing after aspiration and slicing. The result showed that; the collected oocytes were 55, 68, 87 and 106 oocytes respectively; slicing methods yield more oocytes count. Period of time between slaughtering and samples processing significantly affect oocytes collected percentage and quality, periods as 2, 6, 12 and 24 hours yield 75%, 68%, 61% and 55% oocytes counts of good, fair, poor to aged and bad quality oocytes respectively. Two hours period yield an elevated oocytes count with good quality. Maturation index of oocytes according to the type of collected methods showed 44, 37, 39 and 42 with 12, 8, 6 and 6 good oocyte quality for the four methods respectively. In conclusion slicing methods yield more oocytes count with a moderate quality and embryos production while aspiration methods yield a moderate oocytes count with an elevated quality and good embryos production.