Friday, 25 September 2015 18:52

Bulls in paddocks save little, risks a lot

Written by 
Jeremy Bryant, NZAEL. Jeremy Bryant, NZAEL.

Farmers thinking about cutting artificial insemination (AI) this mating season will save very little now and lose a lot in the long term, says Jeremy Bryant.

 

The manager of DairyNZ subsidiary New Zealand Animal Evaluation Ltd stated “AI using high breeding worth (BW) bulls is a cost effective way to continuously improve the profitability of your herd and to maximise cow capital value."

The use of service bulls -- part or whole season -- complicates grazing management and brings hidden costs such as feed and damage to infrastructure. Bulls also introduce risks to staff safety and animal health.

Farmers deciding to opt out of AI this year will need to consider their strategy for herd replacements in the 2017-18 season. Calves reared from service bulls are highly likely to be genetically inferior, and this will have a detrimental impact on farm profits.

It is estimated that bringing just one year of naturally mated replacement heifers into your herd will cost at least $30,000 in lost profit over ten years. This loss can be reduced by buying surplus heifers from other farmers, but this is likely to be expensive.

“Farmers who need to buy replacement heifers will be vulnerable to market supply and demand, and could end up paying top dollar for below average genetic merit animals,” says Bryant.

Farmers looking to save cash or gain extra revenue next season could consider other AI options offered by breeding companies.

This could include more targeted allocation of elite dairy sires to their highest BW cows, while using cheaper beef or short gestation-length sires over low BW/PW cows.

More like this

DairyNZ plantain trials cut nitrate leaching by 26%

DairyNZ says its plantain programme continues to deliver promising results, with new data confirming that modest levels of plantain in pastures reduce nitrogen leaching, offering farmers a practical, science-backed tool to meet environmental goals.

Featured

Australia develops first local mRNA FMD vaccine

Foot and Mouth Disease outbreaks could have a detrimental impact on any country's rural sector, as seen in the United Kingdom's 2000 outbreak that saw the compulsory slaughter of over six million animals.

NZ household food waste falls again

Kiwis are wasting less of their food than they were two years ago, and this has been enough to push New Zealand’s total household food waste bill lower, the 2025 Rabobank KiwiHarvest Food Waste survey has found.

Editorial: No joking matter

OPINION: Sir Lockwood Smith has clearly and succinctly defined what academic freedom is all about, the boundaries around it and the responsibility that goes with this privilege.

National

All eyes on NZ milk supply

All eyes are on milk production in New Zealand and its impact on global dairy prices in the coming months.

Machinery & Products

Leader balers arrive in NZ

Officially launched at the National Fieldays event in June, the Leader in-line conventional PRO 1900 balers are imported and distributed…

JDLink Boost for NZ farms

Connectivity is widely recognised as one of the biggest challenges facing farmers, but it is now being overcome through the…

New generation Defender HD11

The all-new 2026 Can-Am Defender HD11 looks likely to raise the bar in the highly competitive side-by-side category.

» Latest Print Issues Online

Milking It

Full cabinet

OPINION: Legislation being drafted to bring back the controversial trade of live animal exports by sea is getting stuck in the…

» Connect with Dairy News

» eNewsletter

Subscribe to our weekly newsletter