Effect of oestrus synchronization methods on oestrus behaviour, timing of ovulation and pregnancy rate during the breeding and low breeding seasons in Nili-Ravi buffaloes

Warriach, Hassan; Channa, Aijaz Ali; Ahmad, Nasim

doi:10.1016/j.anireprosci.2007.06.007

Cited by 35 publications

(26 citation statements)

References 11 publications

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“…However, these authors applied the P 4 protocol added by the administration of eCG or the Ovsynch protocol in the animals that were cycling (40.9%). Other studies demonstrated that when the Ovsynch protocol was used in female buffaloes during the unfavorable reproductive season (seasonal anestrus), the conception rates were quite variable: 28.2% ; 6.9% (Baruselli et al 2003); 34% (Campanile et al 2005); 30% (Warriach et al 2008). In the present study, deslorelin acetate was used to induce the ovulation (GnRH agonist), which resulted in conception rates (39.6%) higher than the rates reported in other studies using the Ovsynch protocol, indicating that deslorelin acetate was more efficient in female buffaloes under these conditions.…”

Section: Resultsmentioning

confidence: 99%

Estrus synchronization and Fixed Time Artificial Insemination (FTAI) in dairy buffaloes during seasonal anestrus

Frares

Weiss

Kozicki

et al. 2013

Braz. arch. biol. technol.

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The aim of this work was to study estrus synchronization and fixed time artificial insemination (FTAI) G1 and G2 were 20 and 41% (p<0.05) and the ovulation rates were 16.6 and 37%, respectively (p<0.05). The dominant follicle (DF) diameter on D16 was 7.9 mm in G1 and 8.9 mm in G2 (p>0.05). Thirty-five percent of the animals in G1 and 54.1% in G2 showed a diameter DF greater than 8.0 mm on D16 (p>0.05). Thus, it could be concluded that the protocols synchronized the estrus, leading the concentration of the parturitions in the period of low milk production. Deslorelin was more efficient than buserelin due the higher percentage of DF ovulation and higher pregnancy rates.

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Section: Resultsmentioning

confidence: 99%

Estrus synchronization and Fixed Time Artificial Insemination (FTAI) in dairy buffaloes during seasonal anestrus

Frares

Weiss

Kozicki

et al. 2013

Braz. arch. biol. technol.

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“…They often have white markings on the forehead, face, muzzle and legs and white switch of tail (buffaloes with such markings are highly desired and popularly called ‘Panj Kalian’. Average milk production is approximately 2500 l with 6.5% butterfat (Warriach et al. 2008).…”

Section: Introductionmentioning

confidence: 99%

“…The reproductive performance is low in buffaloes because of post‐partum anoestrous (Chohan et al. 1995; Warriach et al. 2008).…”

Section: Introductionmentioning

confidence: 99%

Fertility Following CIDR Based Synchronization Regimens in Anoestrous Nili‐Ravi Buffaloes

Naseer

Ahmad

Singh

et al. 2011

Reprod Domestic Animals

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The objective of this study was to compare oestrus expression and fertility rate in used and new controlled internal drug releasing (CIDR) device treated anoestrous buffaloes. Furthermore, to determine the timing of ovulation, and fertility rate in estradiol benzoate (EB) and GnRH-administered CIDR-treated anoestrous Nili-Ravi buffaloes. In experiment 1, buffaloes received either a used CIDR (UCIDR, n = 35) or a new CIDR (NCIDR, n = 36) for 7 day and PGF2α on day 6. Oestrous expression was similar (p > 0.05) between UCIDR (88.5%) and NCIDR (96.6%) buffaloes. The pregnancy rate did not differ (p > 0.05) because of treatment (37.1% in UCIDR vs 36.6% in NCIDR). In experiment 2, buffaloes (n = 55) received CIDR device for 7 days and PGF2α, on day 6 and randomly assigned into three treatment groups: (i) CIDR-EB (n = 17) received EB on day 8, (ii) CIDR-GnRH (n = 18) received GnRH on day 9 and (iii) control (n = 20) received no further treatment. Mean interval from CIDR removal to ovulation in CIDR-EB, CIDR-GnRH and CIDR group were 61.3 ± 0.8, 64.9 ± 1.8 and 65.1 ± 16.7 h, respectively. However, the buffaloes in the CIDR-EB and CIDR-GnRH group had lesser variability in the timing of ovulation compared to control. The pregnancy rate of both CIDR-EB group (58%) and CIDR-GnRH group (61%) were tended to be higher (p < 0.1) than control (30%). In conclusion, compared to NCIDR devices, previously UCIDR devices are equally effective to induce oestrus in anoestrous buffaloes resulting optimal pregnancy rate. Administration of EB and GnRH after CIDR removal results in tighter synchrony (less variability) and improved fertility in anoestrous buffaloes. CIDR based synchronization regimens have great potential in fertility improvement in anoestrous buffaloes.

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“…The Nili-Ravi buffalo is considered to be one of the best milk producers among other breeds of buffaloes in the world (Warriach et al, 2008). Although, this breed has the potential of producing more than 5000 L of milk/lactation (Bilal et al, 2006), the average milk yield is quite low, which raises the opportunities of genetic improvement through assisted reproductive technologies like artificial insemination, and multiple ovulation and embryo transfer (MOET).…”

Section: Introductionmentioning

confidence: 99%

Supplementing ±-Linolenic acid in the in vitro maturation media improves nuclear maturation rate of oocytes and early embryonic development in the Nili Ravi buffalo

Azam¹,

Shahzad²,

Ul-Husna³

et al. 2017

Anim Reprod

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The present study was conducted to investigate the effect of omega-3 poly unsaturated fatty acid (PUFA), α-linolenic acid (ALA; 18:3 n-3) on the in vitro maturation (IVM) of buffalo oocytes and subsequent embryonic development. Buffalo cumulusoocyte complexes (COCs; n = 2282) were in vitro matured in TCM-199 (0.6% fatty acid free bovine serum albumin, 0.02 Units/ml FSH, 1 µg/ml 17-β-estradiol, 10 µg/ml epidermal growth factor, 50 µg/ml gentamicin) supplemented with 0 (control), 25, 50, 100, 150 or 300 µm ALA under an atmosphere of 5% CO 2 in air at 38.5ºC for 22-24 h. The matured oocytes were then fertilized in Tyrode's Albumin Lactate Pyruvate (TALP) medium and cultured in synthetic oviductal fluid (SOF) medium. Concentrations up to 100 μm ALA improves (P ≤ 0.05) the cumulus expansion compared to control. Higher percentage of oocytes reaching MII stage was observed at 50 μm and 100 μm of ALA compared to control (P ≤ 0.05) . Concentrations of 150 and 300 µm ALA were detrimental both for cumulus expansion and nuclear maturation rate of buffalo oocytes. Moreover, supplementation with 100 μm ALA improved (P ≤ 0.05) cleavage rate compared to control and treatment with 50 and 100 μm ALA yielded significantly higher morulae compared to control. The results of present study indicate that the supplementation with 100 μm ALA to the IVM medium improves nuclear maturation rate of buffalo oocytes and subsequent early embryonic development.

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Effect of oestrus synchronization methods on oestrus behaviour, timing of ovulation and pregnancy rate during the breeding and low breeding seasons in Nili-Ravi buffaloes

Cited by 35 publications

References 11 publications

Estrus synchronization and Fixed Time Artificial Insemination (FTAI) in dairy buffaloes during seasonal anestrus

Estrus synchronization and Fixed Time Artificial Insemination (FTAI) in dairy buffaloes during seasonal anestrus

Fertility Following CIDR Based Synchronization Regimens in Anoestrous Nili‐Ravi Buffaloes

Supplementing ±-Linolenic acid in the in vitro maturation media improves nuclear maturation rate of oocytes and early embryonic development in the Nili Ravi buffalo

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