Genetic market in cattle (Bull, AI, FTAI, MOET and IVP): financial payback based on reproductive efficiency in beef and dairy herds in Brazil

Baruselli, Pietro Sampaio; A, de Souza; M, de Sá; Marques, Márcio de Oliveira; Sales, J. N. S.

doi:10.21451/1984-3143-ar2018-0091

Cited by 22 publications

(16 citation statements)

References 13 publications

(14 reference statements)

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“…To change this scenario, efficient reproductive programs that aim to increase the use of artificial insemination and embryo transfer on farms have been developed. These programs are currently established and present a positive economic return (Baruselli et al, 2018b), generating higher meat and milk production per area and more value for the beef and dairy production chain.…”

Section: Discussionmentioning

confidence: 99%

Challenges to increase the AI and ET markets in Brazil

Baruselli¹,

Catussi²,

Abreu³

et al. 2019

Anim Reprod

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Artificial insemination (AI) and embryo transfer (ET) are the most widely used biotechnologies in the world with the goal of increasing genetic gain and improving reproductive efficiency of beef and dairy herds. The protocols for ovulation synchronization for timed AI (TAI) or ET (TET) are tools that allow artificial insemination or transfer of a high number of embryos in a pre-established moment and without the necessity of estrous detection. Currently, 86% of inseminations in Brazil are performed using TAI (13.6 million TAI out of a total of 15.4 million doses of semen marketed in 2018). With the use of TAI, it was possible to verify that the percentage of artificially inseminated females in Brazil went from 5.8% in 2002 to 13.1% in 2018. The ET market also presented considerable growth in the last 20 years. There was an increase of approximately 8 fold in the number of produced embryos, escalating from 50,000 in 1999 to 375,000 in 2017. In this period, there was a significant increase on the in vitro embryo production, which represented 92.1% of embryos produced in Brazil in 2017. Also, in this period, there was an increase on the embryo production of dairy breeds and reduction on the embryo production of zebu breeds in comparison to data from the early 2000's. TET increases significantly the number of recipients suitable to receive an embryo. After synchronization, 75 to 85% of recipients present a suitable CL for ET without estrous detection. Currently, many synchronization and resynchronization protocols for TAI/TET have been studied to attend different managements, breeds and animal categories, with predictable and satisfactory results. With the intensification of the use of these biotechnologies, it is possible to obtain elevated reproductive efficiency with increase on the genetic gain, which determines greater productivity and economic return for dairy and beef farms. However, the challenge to keep the market growing in the next decade could depend on some factors, such as: increase of the extension services for producers and of the extension training for specialists, improvement of the technological advances to develop more efficient and cost-effective products and practical protocols, increase the integration between universities, research institutes, veterinarians and industries and also, asses market demand for production of animal protein with higher quality, efficiency and environmental and economic sustainability.

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Section: Discussionmentioning

confidence: 99%

Challenges to increase the AI and ET markets in Brazil

Baruselli¹,

Catussi²,

Abreu³

et al. 2019

Anim Reprod

Self Cite

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“…Raising a purebred stock of dairy cows to produce F1 cows is confronted with constraints, such as the unavailability of the required number of native cattle and national breeding policies ( Leroy et al., 2016 ). However, the propagation of high milk-producing readily available XB and HF cows through the MOET program to produce replacement heifers is a practical model ( Baruselli et al., 2018 ; Jarvis, 2019 ; Madalena, 2008 ).…”

Section: Introductionmentioning

confidence: 99%

GnRH or estradiol benzoate combination with CIDR improves in-vivo embryo production in bovines (Bos indicus and Bos taurus) under subtropics

Mahmood

Tahir

Butt

et al. 2021

PeerJ

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Multiple Ovulation and Embryo Transfer (MOET) technology is a potential technique to upgrade livestock species’ genetics. The varied response to super-stimulatory treatments remains one of the limiting factors to this technology’s widespread use. The present study was aimed to improve the superovulation response and in-vivo embryo production by using controlled internal drug release (CIDR)-GnRH or CIDR-EB (Estradiol Benzoate) along with conventional superovulation protocol in Holstein Frisian (HF): Bos taurus; n = 42) and Crossbred (XB: Cholistani (Bos indicus) × HF; n = 28) cows. In the CIDR-GnRH/CIDR-EB treatment, CIDR was implanted in the cows after confirming the presence of a corpus luteum (CL) on the 8th day after estrus. 2 ml GnRH (Lecirelin acetate 0.0262 mg/ml) or 2 mg EB was also administered in CIDR-GnRH/CIDR-EB groups, respectively. Both groups were given super-stimulatory treatment from the 11th day after estrus (FSH in tapering doses twice a day for four consecutive days). On day 13, two doses of 2 ml prostaglandin (75 µg/ml of dextrorotatory cloprostenol) were administered (am: pm), and CIDR was removed the following day. Two artificial inseminations (AI) of the cows were performed (12 h apart) on the 15th day. No CIDR and GnRH/E.B were given in the control group, but the remaining superovulation protocol was the same. Later on, seven days after the first AI, non-surgical embryo flushing was done. The transferable embryos produced from three different superovulation protocols were then transferred into the recipient cows (n = 90) for determining their fertility. Statistical analysis revealed that the number of super-estrus follicles (SEF), multiple corpora lutea (MCL), ovulation/fertilization percentage, fertilized structures recovered (FSR), and transferable embryos (TEs) remained significantly higher (p < 0.05), and days taken for return to estrus (RTE) after embryo collection remained significantly lower (p < 0.05) in CIDR-GnRH (n = 18) and CIDR-EB (n = 15) groups as compared to the control (n = 37). The comparison between XB and HF cows revealed that the TEs production in CIDR-GnRH (XB = 5 vs HF = 13) and CIDR-EB (XB = 6 vs HF = 9) based superovulation protocols were 11.60 ± 4.08 vs 04.31 ± 0.98 and 09.33 ± 1.78 vs 05.22 ± 1.36, respectively. TEs production in XB cows (n = 5) of the CIDR-GnRH group was significantly higher (11.60 ± 4.08) than other groups. On the other hand, the days taken for RTE after embryo collection remained significantly lower (p < 0.05) in HF cows of treatment groups. However, the fertility of TEs was neither affected significantly (p > 0.05) by the superovulation protocol used nor by breed differences among donor cows. In conclusion, using CIDR-GnRH or CIDR-EB along with conventional superovulation protocol may enhance the efficiency of MOET programs in cattle. Furthermore, XB donor cows demonstrated a better performance than HF donor cows under subtropical conditions.

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“…Согласно многолетней мировой практике, в эмбриосборах выявляют в среднем 58,0 % эмбрионов, пригодных для пересадки, а остальными оказываются дегенерировавшие эмбрионы (11,0 %) и неоплодотворенные яйцеклетки (31,0 %) (58). После проведения одной сессии МОЭТ от одной коровы-донора получают в среднем 6,2 эмбрионов in vivo, пригодных для пересадки (59), а за 1 год при применении этого метода каждые 45 сут -более 40 эмбрионов in vivo (60). Зарегистрированы случаи, когда за одну сессию стимуляции суперовуляции от одной коровы-донора получали до 50 эмбрионов in vivo, пригодных к пересадке (45).…”

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EMBRYO SURVIVAL TO ACCELERATE GENETIC PROGRESS IN DAIRY HERDS (review)

Skachkova¹

2021

S-h. biol.

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Genetic market in cattle (Bull, AI, FTAI, MOET and IVP): financial payback based on reproductive efficiency in beef and dairy herds in Brazil

Cited by 22 publications

References 13 publications

Challenges to increase the AI and ET markets in Brazil

Challenges to increase the AI and ET markets in Brazil

GnRH or estradiol benzoate combination with CIDR improves in-vivo embryo production in bovines (Bos indicus and Bos taurus) under subtropics

EMBRYO SURVIVAL TO ACCELERATE GENETIC PROGRESS IN DAIRY HERDS (review)

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