2.
A Study Of Intestinal Nematodes With Taxonomy Of The Species Of Genus Trichostrongylus In Sheep In District Bahawalpur
by Afzal, M | Mubasher Saeed Mian | Asiif Rabbani | Muhammed Sarwer Khan | Faculty of Veterinary Sciences.
Material type: ; Format:
print
; Literary form:
not fiction
Publisher: 1992Dissertation note: Study of intestinal nernatodes with taxonomy of the species of genus Trichostmngyjs in sheep in district Bahawalpur was conducted. For this purpose two hundred guts of' sheep were collected from Bahawalpur Abattoir aid adjacent areas of' Cholistan. The study was conducted from January, 1992 to April, 1 992. The parasites were recovered by sedimentation and Sieving method performed at Divisional Diagnostic Laboratory l3ahawalpur. Parasites were identified directly under microscope by preparing lwrmancllt mounts in the Parasitology Section, College of Veterinary Sciences, Lahore. The overall incidences of gastro- intestinal nematodes was 63% in sheep.
The species of nematodes observed during the study were:
Oesophagostomum venulosum 62%
Oesophagostomum clumbianum 52%
Trichuris ovis 38.5%
Trichuris globulosa 24%
Nematodirus spathiger : 25%
Haemonochus contortus: 14%
Trichostrongylus colubriformis: 24%
Trichostrongylus axei: 13.5%
Monthwise prevalence of nematodes infection was also carried out and it was observed that the highest infection rate was 84% during the months of April and 68% during the month of March. In February the infection was 56%. The lowest incidence was recorded as 44% during the month of January. The taxonomy of the species of genus lrichostrongyjis was studied. Trichostrongylus colubriformis and Trichostrongylus axei
Species were identified.
Availability: Items available for loan: UVAS Library [Call number: 0299,T] (1).
3.
Effect Of Different Egg Yolk Levels On The Quality Of Frozen Buffalo Bull Semen
by Afzal, M | Rashid Ahmed Chaudry | Imtiaz Hussain Khan | Muhammed | Faculty of Veterinary Sciences.
Material type: ; Format:
print
; Literary form:
not fiction
Publisher: 1992Dissertation note: The comparative study of various egg yolk levels in the extenders used for deep freezing of buffalo semen was conducted at Semen Production Unit, Qadirabad (Sahiwal). The routinely used Lactose-Fructose-Glycerol semen extender was added with 20, 15, 10, 5 and 0% egg yolk concentration in five experimental extenders. 50 ejaculates collected from 10 buffalo bulls were frozen in Liquid Nitrogen. Each semen sample from all bulls and egg yolk levels was evaluated for post-thaw sperm motility, livability and absolute index of livability.
The average values obtained from egg yolk levels and bulls for all test parameters were found statistically high (P < 0.01) at 10 percent egg yolk level as compared to all others. The order of merit for post-thaw motility, livability and the absolute index of livability at 10, 20, 15, 5 and 0% egg yolk level was 45.9%, 43.5%, 42.9%, 33.7% and 8.7% for motility, 9.8, 9.34, 9.3, 7.68 and 2.75 (Hours) for livability and 231.6, 207.95, 204.85, 123.25 and 13.85 for livability index, respectively.
The comparative mean values obtained from each bull were observed non-significant for post-thaw sperm motility but were found significantly higher (P < 0.05) among bulls regarding livability and the absolute index of livability.
On the basis of the results obtained in the present study it may be concluded that due to synergestic effect between glycerol and the presence of 10% concentration of egg yolk in the extender, being comparatively more economical, exhibiting better visibility and on account of high values obtained from motility, livability and absolute index of livability, an extender containing 10% egg yolk level is recommended for the preservation and deep freezing of buffalo bull semen in Liquid Nitrogen for obtaining optimal semen quality.
Availability: Items available for loan: UVAS Library [Call number: 0322,T] (1).
