Comparison of pregnancy rates with two estrus synchronization protocols in Italian Mediterranean Buffalo cows

Neglia, Gianluca; Palo, R. Di; Rosa, Clemente De; Zicarelli, L.; Campanile, Giuseppe

doi:10.1016/s0093-691x(02)01328-6

Cited by 118 publications

(79 citation statements)

References 13 publications

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“…Synchronisation of the stage of the oestrous cycle with the Ovsynch-TAI Programme and fixed-time AI resulted in an overall pregnancy outcome of 46.7% which was relatively high for buffaloes mated in the mid-winter [10][11][12][13][14][15][16]. In contrast to previous reports in buffaloes [2] and cattle [17] there was no apparent relationship between BCS and pregnancy outcome in the present study.…”

Section: Discussioncontrasting

confidence: 84%

“…The synchronisation protocol used (Ovsynch-TAI Program) was similar to that developed for cattle [9] and previously applied in buffaloes [10]. Briefly, it consists of Day 0, GnRH agonist (buserelin acetate, 12 μg; Receptal ® , Intervet); Day 7, PGF 2 analogue (luprostiol, 15 mg; Prosolvin ® , Intervet); Day 9, GnRH agonist (12 μg).…”

Section: Oestrus Synchronisation Ai and Pregnancy Diagnosismentioning

confidence: 99%

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Relationship of body condition score and blood urea and ammonia to pregnancy in Italian Mediterranean buffaloes

Campanile¹,

Neglia²,

Palo³

et al. 2006

Reprod. Nutr. Dev.

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-The relationship of body condition score (BCS) and blood urea and ammonia to pregnancy outcome was examined in Italian Mediterranean Buffalo cows mated by AI. The study was conducted on 150 buffaloes at 145 ± 83 days in milk that were fed a diet comprising 14.8% crude protein, 0.9 milk forage units·kg -1 dry matter and a non-structural carbohydrate/crude protein ratio of 2.14. The stage of the oestrous cycle was synchronised by the Ovsynch-TAI programme and blood urea and ammonia levels were assessed on the day of AI. Energy corrected milk (ECM) production and BCS were recorded bi-weekly. The pregnancy risk was 46.7% and was slightly lower in buffaloes with BCS < 6.0 and BCS > 7.5. There were no significant differences in ECM, urea and ammonia between pregnant and non-pregnant buffaloes. However, pregnancy outcome was higher (P = 0.02) in buffaloes with blood urea < 6.83 mmol·L -1 . The likelihood of pregnancy for buffaloes with low urea blood level was 2.6 greater than for high urea level and exposure to a high urea level lowered the probability of pregnancy by about 0.25. The findings indicate that buffaloes are similar to cattle and increased blood levels of urea are associated with reduced fertility when animals are mated by AI. buffalo / BCS / urea / ammonia / pregnancy

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Section: Discussioncontrasting

confidence: 84%

Section: Oestrus Synchronisation Ai and Pregnancy Diagnosismentioning

confidence: 99%

Relationship of body condition score and blood urea and ammonia to pregnancy in Italian Mediterranean buffaloes

Campanile¹,

Neglia²,

Palo³

et al. 2006

Reprod. Nutr. Dev.

Self Cite

View full text Add to dashboard Cite

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“…In another study, Paul and Prakash (10) reported 33.3% conception rates in Murrah buffaloes after TAI and 30.7% conception rates in buffaloes inseminated following spontaneous onset of estrus using a similar protocol. Neglia et al (12) reported that buffaloes treated with different ovsynch treatment protocols could have 36%-57.0% conception rates. Luteal regression was induced 12 days before initiation of ovsynch treatment by the administration of a luteolytic dose of PGF2α in cows having a responsive CL.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of ovsynch protocols for timed artificial insemination in water buffaloes in Bangladesh

Hoque¹,

Talukder²,

Akter³

et al. 2014

Turk J Vet Anim Sci

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A total of 65 water buffaloes (groups A, B, and C) at ≥60 days postpartum with a body condition score (BCS) of ≥2.5 were selected to evaluate ovsynch protocols for timed artificial insemination (TAI). The group A buffaloes (n = 25) were treated with a simple ovsynch protocol (GnRH -Day 7 -PGF2α -Day 2 -GnRH -16 h -TAI). The group B buffaloes (n = 22) received PGF2α treatment 12 days before the initiation of simple ovsynch (PGF2α at Day -12 + simple ovsynch; modified ovsynch). The group C buffaloes (n = 18) were treated with a double ovsynch protocol (GnRH -Day 7 -PGF2α -Day 3 -GnRH -Day 7 -GnRH -Day 7 -PGF2α -48 h -GnRH -16 h -TAI). Milk P4 ELISA was used for tracking ovulation and conception rates. Ovulation rates were higher in buffaloes that received the double ovsynch treatment (group C; 83.3%) than those with simple ovsynch (group A; 72.0%; P < 0.05). The group C cows (44.4%) achieved a higher conception rate than the cows of groups A (28.0%) and B (36.4%) (P < 0.05) and multiparous buffaloes having BCS of ≥3.5 responded better to the ovsynch treatments than the primiparous ones (P < 0.05). The double ovsynch protocol increases both ovulation and conception rates in comparison to the simple and modified ovsynch protocols and is more effective in multiparous cows than in primiparous ones.

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“…The synchronization protocol used, Ovsynch with timed AI, was similar to that developed for cattle (Pursley et al, 1995) and previously applied in buffaloes (Neglia et al, 2003b(Neglia et al, , 2008Rossi et al, 2014). Artificial inseminations were performed by the same operator and each buffalo was inseminated once 20 h after the second injection of GnRH agonist.…”

Section: Synchronization Of Ovulation Ai and Pregnancymentioning

confidence: 99%

Influences of different space allowance on reproductive performances in buffalo

et al. 2017

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The aim of this study was to evaluate the effect of two different conditions of space allowance on reproductive performance and oxidative parameters, biochemical and hormonal profiles in buffalo. The trial was carried out on one hundred pluriparous buffaloes divided into two different groups. Buffaloes in group HDG (high density group -n = 50) were maintained in open yards that allowed 10 m 2 /head while those in group LDG (low density group -n = 50) were maintained in 22 m 2 /head. After 60 days, 45 buffaloes in each group underwent synchronization of ovulation by Ovsynch and were artificially inseminated to assess the reproductive efficiency. On the day of AI blood samples were collected to evaluate oxidative stress, hormonal and metabolic profile. Furthermore, on the same day, blood, saliva and hair samples were collected to assess cortisol levels. Simultaneously, five buffaloes/group, were synchronized but not inseminated and on the day of the hypothetical timed artificial insemination (TAI), follicular fluid was recovered by OPU and blood samples were collected from each animal to evaluate the redox status on both plasma and follicular fluid. Conception rate on day 70 post-AI was similar between the two groups (57.5 vs. 62.5%, in LDG and HDG, respectively). No significant differences were found on redox status, metabolic and hormonal profile and cortisol levels between the groups. In conclusion, on the conditions of this experiment it was observed that the space allowance of 10 m 2 /head did not affect reproductive efficiency in buffalo cows.

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Comparison of pregnancy rates with two estrus synchronization protocols in Italian Mediterranean Buffalo cows

Cited by 118 publications

References 13 publications

Relationship of body condition score and blood urea and ammonia to pregnancy in Italian Mediterranean buffaloes

Relationship of body condition score and blood urea and ammonia to pregnancy in Italian Mediterranean buffaloes

Evaluation of ovsynch protocols for timed artificial insemination in water buffaloes in Bangladesh

Influences of different space allowance on reproductive performances in buffalo

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