Nutrition in early lactation

Early lactation, spanning both calving and mating, is a stressful time for cows as energy demand is very high at a time when cows may struggle to eat enough to supply that demand.

It is critical to ensure optimal rumen performance is achieved to meet the energy needs for production and reproduction, while at the same time maintaining body condition.

Without a balanced nutrition plan during this critical time, deficiencies in key nutrients can also be an issue, affecting peak production, ongoing lactation, and later, reproductive performance.

It’s not rocket science, nor is it a secret – well-fed cows hold better condition through lactation. Providing the cow has been transitioned well (fed the correct balance of minerals and feeds) she will come into lactation with higher rumen performance and lowered risk of developing metabolic diseases, such as milk fever and ketosis.

Superior rumen capacity will enable her to eat a full quota of grass each day, and efficiently convert the nutrients obtained to the energy required to drive higher milk production, while achieving better health outcomes.

Increased milk production causes nutrient demand to increase rapidly. It is important that this demand is met through good quality feed. It is essential that a cow eats as much feed as possible during this time in order to maintain condition, produce milk and drive the hormones required over the coming weeks to become pregnant again.

Ideally, this feed provides the correct levels of quality protein, sugar, fibre and essential vitamins and minerals. In reality, with most feed production these days focused on quantity instead of quality, a lot of feed provides poor protein, fibre and mineral levels.

The most common mineral deficiencies we see during early lactation are calcium and phosphorus. Both of these minerals are vital for feed intake, conversion, milk production and maintaining body condition.

A detailed picture of the nutrition status of a cow can help determine any nutrient deficiencies where possible energy absorption and distribution is being lost.

By digging deeper into cow nutrition and adapting research, we can address any gaps in nutrient levels and remedy these before they become serious and longlasting problems.

Supplementation is an easy, cost-effective and efficient way to ensure the cow is receiving the correct levels of essential vitamins and minerals to allow her to meet milk production and reproduction demands during this time.

The right supplement for early lactation should include a comprehensive formulation that’s high in calcium, magnesium and phosphorus, while also supplying adequate trace element levels.

Rumen buffers can also be very useful in stabilising rumen pH over this time, as these allow higher rumen performance without risking sub-acute acidosis, a common problem in early lactation.

Feed and soil tests are helpful in building a picture of the nutrition status of the cow, while research on nutrient requirement levels at different levels of production can help determine supplementation most effectively.

Early lactation presents a critical period for the cow and farmer, with cow health dictating the success of an entire season and ongoing farm profitability. Luckily, these days, there’s an accessible bank of knowledge and technology to make sure your herd is on track for optimal production, reproduction and overall performance at every stage of lactation.

Notice of Elections

- DairyNZ Board of Directors

- DairyNZ Directors Remuneration

Invitation for 2023 candidate nominations – three positions available. In October, elections will take place for:

• Two farmer-elected directors for the Board of DairyNZ Incorporated.

• One farmer-elected member for the DairyNZ Directors’ Remuneration Committee. Current levy-paying dairy farmers are invited to nominate candidates to fill these three positions.

All farmers paying a levy on milksolids to DairyNZ are eligible to stand for election. An information pack outlining desired criteria and nomination requirements for the position can be obtained from the Returning Officer. Nominations must be received by the Returning Officer by 12 noon on Friday, 25 August 2023.

Elections

If more than the required nominations are received, elections will be carried out by postal voting using the STV (single transferable vote) voting method. Votes will be weighted by annual milksolids production. Voting credentials will be posted to all registered DairyNZ levy payers on 11 September 2023, with voting closing at 12 noon on Tuesday, 10 October 2023.

The DairyNZ Annual General Meeting will be held on Wednesday, 11 October 2023. Election results will be announced at the meeting.

For further details contact the Returning Officer below.

Anthony Morton

Returning

Officer

0800 666 935 iro@electionz.com

– DairyNZ Incorporated