How to establish the proper ram: ewe ration in the flock

SheepNet Solution Romania

Solution name: How to establish the proper ram: ewe ration in the flock

Country: Romania

Dairy or/and meat sheep: Dairy and Meat

Source of information: Industry and research

Level of solution:

X

Knowledge

X

Practical

 

Just Being Tested

 

Aim: To increase flock fertility and to proper use the rams at mating

Description:

Expected benefits: Increased overall flock fertility and an improved ram utilization.

Prerequisites and/or limits (knowledge, training, capabilities, cost, management, facilities, equipment, etc.)

  • Facilities such as reproduction paddocks at the farm, when pedigree breeding is applied.
  • Problematic when mob reproduction is applied, given that some rams are dominant and will tend to service a greater number of ewes, leading to ram exhaustion and a lower spermatic production of those rams.
  • Infertile and sub-fertile rams can lead to lower conception rates in the flock, that is why the use of ‘flushing’ rams at the end of the reproduction season is recommended.

 

Scientifiques publications:

Rosa, H. J. D., Silva, C. C., & Bryant, M. J. (2006). The effect of ram replacement and sex ratio on the sexual response of anoestrous ewes. Small Ruminant Research, 65(3), 223–229. https://doi.org/10.1016/j.smallrumres.2005.06.018

Snowder, G. ., Stellflug, J. ., & Van Vleck, L. . (2004). Genetic correlation of ram sexual performance with ewe reproductive traits of four sheep breeds. Applied Animal Behaviour Science, 88(3–4), 253–261. https://doi.org/10.1016/j.applanim.2004.04.004

Knights, M., Redhead, A., D’Souza, K., & Baptiste, Q. (2015). Effect of stimulation with a gonadotropin mixture on reproductive outcome in nulliparous ewes bred during seasonal anestrus and early breeding season. Animal Reproduction Science, 159, 198–204. https://doi.org/10.1016/j.anireprosci.2015.06.020

Palacín, I., Yániz, J. L., Fantova, E., Blasco, M. E., Quintín-Casorrán, F. J., Sevilla-Mur, E., & Santolaria, P. (2012). Factors affecting fertility after cervical insemination with cooled semen in meat sheep. Animal Reproduction Science, 132(3–4), 139–144. https://doi.org/10.1016/j.anireprosci.2012.05.005

 

Tips & Tricks:

The ram effect

 

Expected Impacts

Country

Romania

Partner

BUASVM Timisoara, Dr. Dinu Gavojdian

Topic

Reproduction

Issue

Ewe to ram ratio        

Solution No/Name

8. How to establish the proper ram: ewe ration in the flock   

Service provider/ technician + vet or farmers

Farmers

Benefit

Benefit expected

Increase productivity: - flock fertility

System

Is the solution suitable for various production systems

Yes

If no – for which system

 

Cost

What are the asset costs

Ram costs       

What are the maintenance costs

Ram maintenance related costs

Any limits to its applicability?

No

Work Load

How much time is required to prepare and implement solution?

1 day

How many people is needed to implement the solution?

1 person (the farmer)

Timing

How long it takes to get results?

1 day  

How long it takes to see an effect on sheep productivity?

current production period     

Equipment/Facility

What kind of equipment/tools are necessary?

Rams and reproduction equipment (e.g. ram harness)

Skill/Knowledge – Training (farmer)

Does the solution need any specific skill/knowledge or training?

No

How much time will be required for training

Not applicable

Wider Environment

Is there any particular regulation linked to the solution?

No

Does the solution need any particular structure or organization?

No

Other Comments

 

 

Users' evaluation

Country

 TURKEY, ROMANIA

Solution No/Name

 8. How to establish the proper ram: ewe ratio in the flock

Farmer/Service provider/technicians-vet-others

Farmers

Why did you select this solution?

An optimum use of the rams

To avoid overuse of the rams

To obtain the highest success in flock fertility

Was it easy to implement?

Yes

If not say what are the identified drawbacks?

Some farmers do not have enough breeding rams to meet the optimum ratio

 

Did you need to adapt it?

 No

If yes, how?

The purchase of rams with pedigrees and with EBV’s

 

Were you happy with the outcome of the solution?

 Yes

What were the outcomes?

85-90% conception rates

 

Score the solution

Interesting and easy to implement

Will you continue to implement it?

Yes

If not, for which reasons?

 

Comments/Additions

 Fertility rates in the flock of over 85%

 

 

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