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.com
Volume 8, Issue 4 (Suppl)
J Vet Sci Technol, an open access journal
ISSN: 2157-7579
Veterinary 2017
September 04-05, 2017
September 04-05, 2017 | Paris, France
7
th
International Veterinary Congress
Effect of exogenous administration of oxytocin on follicular dynamics and milk contents in partially
lactating nilli ravi buffaloes
Saeed Murtaza
1
, Abdul Sattar
1
, Nasim Ahmad
1
, Irfan ur Rehamn
1
, Muhammad Ijaz
1
, Rehana Kousar
2
, Muhammad Shehzad
2
, Attaur Rehman
1
and
Bilal
Ahmad
1
1
University of Veterinary and Animal Sciences Lahore, Pakistan
2
Nuclear Institute of Agriculture and Biology Faisalabad, Pakistan
I
n Pakistan, oxytocin is being used extensively in buffalo for milk let-down especially near terminal lactation when it refuse
to accept calf for milk let-down. Therefore, exogenous oxytocin is an alternative of calf suckling and the main solution of
buffalo milk letdown for dairy farmers but at same time it may be cause of erratic estrous cycle and infertility. Hence, a study
was designed to know the effect of different concentration of oxytocin on follicular dynamics and milk contents in Nili-Ravi
buffalo. Eight experimental buffaloes were synchronized with single injection of PGF2 after ultrasonography. Daily single
injection of oxytocin to each animal @ 15, 30 and 45IU/IM respectively while control was injected with normal saline for 100
days. Ultrasonography was done thrice a week to monitor follicular dynamics during whole estrous cycle. Milk (n=400) was
collected and analysed for its contents analysis with milkoscan. Results revealed that size of dominant follicle on left ovary was
remarkably different in 30IU & 45IU of oxytocin treatments than 15IU & control. Large follicles were significantly (P<0.05)
different from control and 15IU. Large follicles were lowest in number at 45IU than control. On right ovary, total follicles and
small follicles counts were considerably (P<0.05) higher in 45IU than 0IU, 15IU and 30IU while sizes of dominant follicles
were different significantly (P<0.05) in 0IU, 30IU and 45IU. Medium and large follicles disclosed same trend in all treatments.
Among the milk contents: fat% was increased significant (P<0.05) in the peak dose 45IU while other contents: SNF, density,
lactose, proteins, solids, freeze point and pH were decreased with respect to control. It was concluded that oxytocin had limited
effect on follicular dynamics with lowest count of medium follicles in all treatments. Further, it was confirmed that fat%
increased with the increase in oxytocin concentration.
Biography
Saeed Murtaza working at University of Veterinary and Animal Sciences Lahore, Pakistan. His international experience includes various programs, contributions
and participation in different countries for diverse fields of study. His research interests reflect in his wide range of publications in various national and international
journals.
saeedmurtaza@bzu.edu.pkSaeed Murtaza et al., J Vet Sci Technol 2017, 8:4(Suppl)
DOI: 10.4172/2157-7579-C1-024