Comparison of Estrus Response and Pregnancy Rates of Beef Cows Synchronized with Progesterone and Prostaglandin-Based Protocols

Rosnina, Y.; Khumran, A.M.; Ariff, M.O.; Wahid, H.; Dhaliwala, G.; Khanh, N.P.; Yap, K.C.; Fahmi, Melta Rini; Azmil, M.E.

doi:10.3923/javaa.2012.3561.3567

Cited by 2 publications

(1 citation statement)

References 5 publications

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“…Ravikumar et al (2011) reported that Controlled Internal Drug Release (CIDR)based Ovsynch or fixed timed AI (FTAI) protocols using either GnRH or GnRH yielded pregnancy rates as higher than the absence of a CIDR. Involving CIDR in the protocol prevented the onset of premature estrus (Khumran et al, 2012), and a CL with normal life-span was formed following CIDR removal. Inclusion of CIDR in a protocol to synchronize ovulation suppressed estrus during CIDR insertion, thereby allowing a 100% submission rate for TAI without affecting fertility (Rivera et al, 2005).…”

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confidence: 99%

Estrus response and fertility rate in Kundhi buffaloes following estrus synchronization in breeding season

et al. 2015

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The aim of the present study was to compare the effect of two estrus synchronization treatments i.e., Ovsynch alone and Ovsynch plus Controlled Internal Drug Release (CIDR), on the occurrence of estrus and conception rate in Kundhi buffalo during breeding season in Pakistan. Forty Kundhi buffaloes were randomly selected and were divided into three groups; Group A (n=16; Ovsynch) received 2 mL GnRH intramuscularly (i/m) on day 0 and 9. On day 7, 5 mL prostaglandin F2α (PGF2α analogue) was administered through i/m route. The buffaloes of Group B (n=17; Ovsynch+CIDR) received 2 mL GnRH on day 0 along with implantation of CIDR. On day 7, the CIDR was removed, and 5 mL PGF2α analogue was injected through i/m route. A second dose of GnRH was administered through i/m route after 48 h of PGF2α inj. in both groups. Group C (n=7; control) received 2 mL normal saline through i/m route on day 0, 7 and 9. The buffaloes of all three groups were artificially inseminated twice (12 h and 24 h after the second GnRH inj.) using frozen-thawed semen. Estrus response differed significantly (P<0.05) among the groups. The animals of Group B (76.47%) showed superior estrus response as compared to others. Higher conception rate (52.94%) was observed in the animals of Group B; however, the difference was not significant. In conclusion, Ovsynch+CIDR causes to occur better estrus response and conception rate as compared to Ovsynch alone in Kundhi buffaloes during breeding season.

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Section: Introductionmentioning

confidence: 99%

Estrus response and fertility rate in Kundhi buffaloes following estrus synchronization in breeding season

et al. 2015

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Comparative Efficacy of Ovsynch and Double PG Protocols in Postpartum Anoestrus Graded Murrah Buffaloes (Bubalus bubalis)

Prasad¹,

Marmamula²,

Rao³

2019

Journal of Livestock Science

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This study was conducted to evaluate the efficacy of Ovsynch and double PG protocols in postpartum anoestrous Graded Murrah buffaloes during the period October 2017 to December 2017. Based on history and per rectal palpation twice at ten days interval 30 postpartum anoestrous buffaloes were selected to induce estrus using Ovsynch and double PG protocols. These selected animals were randomly divided into three groups: Group I: Ovsynch protocol (n=10) having smooth ovaries, Group II: Double PG protocol (n=10) the animals that are cyclical and subestrus, Group III control (n=10) normal cyclic without any hormonal intervention. All the animals were initially dewormed with oxyclozonide and supplemented with mineral mixture. Before initiation of treatment, blood samples were collected for estimation of serum calcium and phosphorus. In Group III animals estrous response was recorded as 60 %. Conception rate was higher in Group I (60%) than in Group II (50%) and Group III (33%). Furthermore, no significant difference was recorded in the levels of serum calcium and phosphorus in between the groups.

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Comparison of Estrus Response and Pregnancy Rates of Beef Cows Synchronized with Progesterone and Prostaglandin-Based Protocols

Cited by 2 publications

References 5 publications

Estrus response and fertility rate in Kundhi buffaloes following estrus synchronization in breeding season

Estrus response and fertility rate in Kundhi buffaloes following estrus synchronization in breeding season

Comparative Efficacy of Ovsynch and Double PG Protocols in Postpartum Anoestrus Graded Murrah Buffaloes (Bubalus bubalis)

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