The value of sexed bovine semen

Madalena, F. E.; Junqueira, Fabiano Santos

doi:10.1111/j.1439-0388.2004.00463.x

Cited by 10 publications

(22 citation statements)

References 12 publications

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“…The number of pregnancies obtained at the end of the simulation by incorporating the sexing of sperm into the model is considerably lower compared with traditional techniques that are used in ET and IVP scenarios (Beltrame et al, 2010a,b). Decreased productivity is similarly mentioned in the work of Madalena et al (2004) and Rath et al (2009).…”

Section: Discussionmentioning

confidence: 98%

“…In cases in which sperm sexing is used, two factors are crucial for the viability of the activity: the number of pregnancies and the additional amount paid due to the confirmation of the pregnancy of the desired sex (Madalena et al, 2004). Ruvuna et al (1992) found major increases in the proportion of males when using sexed sperm to produce bulls.…”

Section: Discussionmentioning

confidence: 99%

“…Aspects of the viability of sexed semen were also studied by Ruvuna et al (1992) and Madalena et al (2004). In these studies, the NPV was used to evaluate the use of sexed semen in AI and ET, which showed promising expectations for the implementation of this biotechnology.…”

Section: Discussionmentioning

confidence: 99%

“…Simulations performed by Madalena et al (2004) showed the relationship between the value of sexed sperm doses and the difference between the amounts paid for the products. Although this study was performed with AI only, those authors suggested that the reduction in the fertility rate by sexed sperm compared with conventional sperm could negatively influence the estimates of the projected NPV.…”

Section: Discussionmentioning

confidence: 99%

“…However, the early choice of sex should be effective and efficient and result in fertility that is similar to that achieved with the conventional methods. It should also be affordable, allowing for extensive application (Hohenboken, 1999;Madalena et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

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Simulation and economic analysis of bovine sex selection

et al. 2013

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-A simulation model implemented in the programming software Delphi XE ® was applied to evaluate sex selection in bovine. The hypothesis under investigation was that a dynamic model with stochastic and deterministic elements could detect the sexed semen technique to minimize pregnancy cost and to determine the adequate number of recipients required for in vivo (ET) and in vitro embryo production (IVP) in the proposed scenarios. Sex selection was compared through semen sexed using flow cytometry (C1) and density gradient centrifugation techniques (C2) in ET and IVP. Sensibility analyses were used to identify the adequate number of recipients for each scenario. This number was reinserted into the model to determine the biological and financial values that maximized ET and IVP using sexed semen (C1M and C2M). New scenarios showed that the density gradient technique minimized pregnancy cost based on the proposed scenarios. In addition, the adequate number of recipients (ET -C1M -115 and C2M -105)/(IVP -C1M -145 and C2M -140) per donor used was determined to minimize the pregnancy cost in all scenarios.

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Simulation and economic analysis of bovine sex selection

et al. 2013

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Production and economic comparison of milking F1 Holstein×Gir cows with and without the stimulus of the calf

Junqueira¹,

Madalena²,

Reis³

2005

Livestock Production Science

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Effects of sex control and twinning on economic optimization of culling cows in Japanese Black cow-calf production systems

Oishi

Hirooka

2012

Theriogenology

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The effects of sex control and twinning techniques on determination of optimal culling parity of cows in beef cow-calf production systems were deterministically analyzed using a herd model simulation. The model simulated the annualized net revenue as an economic indicator during the whole life cycle of a cow. Biological factors (survivability, growth, reproduction, and feed requirements) and economic factors (returns from sales of live calves and cows' carcasses and production costs) were included in the model. Some biological and economic parameters relating to these factors were altered from a base condition in order to adapt the production systems with sex control and twinning techniques. Based on the model, early culling was optimal for all production systems when biological efficiency was used as an indicator of production; however, later culling was optimal for single production, but slightly earlier culling was optimal for twin production, when annualized net revenue was evaluated. The introduction of sex control did not greatly affect the determination of the optimal culling parity of cows. When production included the sex control, female sexing increased biological efficiency, whereas male sexing increased annualized net revenue. In the present beef cow-calf production circumstances in Japan, introduction of sex control did not have economically appreciable effects, but twinning was economically beneficial. For production involving sex control, improvement in the conception rate per mating and/or reduction of technical cost were required for this technology to be profitable.

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The value of sexed bovine semen

Cited by 10 publications

References 12 publications

Simulation and economic analysis of bovine sex selection

Simulation and economic analysis of bovine sex selection

Production and economic comparison of milking F1 Holstein×Gir cows with and without the stimulus of the calf

Effects of sex control and twinning on economic optimization of culling cows in Japanese Black cow-calf production systems

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