Muhammad Saleem AKHTAR, Sana IRUM, Mushtaq Hussain LASHARI, Ejaz AHMAD, Tanveer AHMAD, Muhammad Mazhar AYAZ, Laeeq Akbar LODHI, Ijaz AHMAD, Masood AKHTAR

Bio-stimulatory Effect of Bull on Postpartum Estrus Interval in Nili-Ravi Buffaloes

The objective of this study was to determine the effect of bull exposure after calving on postpartum interval to estrus, in Nili-Ravi buffalo. Buffaloes were divided into 4 groups; BEC & BEI; exposed continuously or intermittently to the physical presence of bull, EPB & NE; exposed or not exposed to discharge waste (urine & feces) of bull. Buffaloes were exposed on d 5 after parturition. Postpartum interval to first behavioural estrus was shorter in BEC than BEI, EPB and NE treatments. The mean serum progesterone concentration did not differ significantly between BEC and other (BEI, EPB and NE) treatments. It was concluded that presence of bull has positive effect in reducing calving interval in Nili Ravi buffalo.

Nili Ravi Mandalarında Postpartum Östrus Aralıkları Üzerine Boğanın Biyo-uyarıcı Etkisi

Bu çalışmanın amacı Nili Ravi mandalarında buzağılama sonrası boğaya maruz kalmanın postpartum östrus aralıkları üzerine etkisini belirlemektir. Mandalar 4 gruba ayrıldı; BEC: Sürekli olarak boğayla fiziki olarak beraber bulunduruldu, BEI: Aralıklı olarak boğayla fiziki olarak beraber bulunduruldu, EPB: Boğanın atıkları (idrar ve dışkı) ile beraber bırakıldı NE: Boğanın atıkları (idrar ve dışkı) ile beraber bırakılmadı. Boğaya veya atıklarına maruz bırakma doğum sonrası 5. günde gerçekleşti. İlk davranışsal östrus postpartum aralık BEC’de BEI, EPB ve NE gruplarından daha kısaydı. Ortalama progesteron konsantrasyonu BEC ile diğer gruplar (BEI, EPB ve NE) arasında anlamlı bir fark göstermedi. Nili Ravi mandalarında boğa mevcudiyetinin buzağılama aralıklarına olumlu etkisinin olduğu sonucuna varıldı.

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Noseir W: Changes in serum progesterone patterns during the short luteal cycles initiated after calving and relationship to conception in buffalo-cows. Assiut Vet Med J, 42, 330-336, 1999.

Shah RG, Dhami AJ, Kharadi VB, Desai PM, Kavani FS: Hormonal profile in fertile and infertile postpartum Surti buffaloes. Buffalo J, 20, 29- 42, 2004.

Fernandez DL, Berardinelli JG, Short RE, Adair R: Acute and chronic changes in luteinizing hormone secretion and postpartum interval to estrus in first-calf suckled beef cows exposed continuously or intermittently to mature bulls. J Anim Sci, 74, 1098-1103, 1996. DOI: 10.2527/1996.7451098x

Petropavlovskii VV, Rykova AI: The stimulation of sexual functions in cows. In Anim Breed Abstracts, 29, 168, 1961.

Naasz CD, Miller HL: Effects of bull exposure on postpartum interval and reproductive performance in beef cows. Can J Anim Sci, 70, 537-542, 1990. DOI: 10.4141/cjas90-065

Fernandez D, Berardinelli JG, Short RE, Adair R: The time required for the presence of bulls to alter the interval from parturition to resumption of ovarian activity and reproductive performance in first-calf suckled beef cows. Theriogenology, 39, 411-419, 1993. DOI: 10.1016/0093-691X(93)90384-H

Custer EE, Berardinelli JG, Short RE, Wehrman M, Adair R: Postpartum interval to estrus and patterns of LH and progesterone in first-calf suckled beef cows exposed to mature bulls. J Anim Sci, 68, 1370- 1377, 1990. DOI: 10.2527/1990.6851370x

Barman P, Yadav MC, Kumar H, Meur SK: Effect of bull exposure on ovarian cyclicity in postpartum buffaloes. Buff Bull, 30, 240-249, 2011.

Tauck SA, Berardinelli JG: Putative urinary pheromone of bulls involved with breeding performance of primiparous beef cows in a progestin-based estrous synchronization protocol. J Anim Sci, 85, 1669- 1674, 2007. DOI: 10.2527/jas.2006-849

Roberson MS, Ansotegui RP, Berardinelli JG, Whitman RW, McInerney MJ: Influence of biostimulation by mature bulls on occurrence of puberty in beef heifers. J Anim Sci, 64, 1601-1605, 1987.

Martin GB: Reproductive research on farm animals for Australia--some long-distance goals. Reprod Fertil Dev, 7, 967-982, 1995. DOI: 10.1071/ RD9950967

Rekwot PI, Ogwu D, Oyedipe EO, Sekoni VO: The role of pheromones and bio-stimulation in animal reproduction. Anim Reprod Sci, 65, 157-170, 2001. DOI: 10.1016/S0378-4320(00)00223-2

Berardinelli JG, Joshi PS: Initiation of postpartum luteal function in primiparous restricted-suckled beef cows exposed to a bull or excretory products of bulls or cows. J Anim Sci, 83, 2495-2500, 2005. DOI: 10.2527/2005.83112495x

Wright IA, Rhind SM, Whyte TK, Smith AJ: Effects of body condition at calving and feeding level after calving on LH profiles and the duration of the post-partum anoestrous period in beef cows. Anim Sci, 55, 41-46, 1992. DOI: 10.1017/S0003356100037259

Ramesh V, Vanan TT, Varadhrajan A: Improvement of reproductive performances of buffaloes. Pashudhan,17, 1-4, 2002.