Hier vindt u een overzicht van de Technical Bulletins over kalveren.
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Calf diarrhea is a problem on many farms. The bacteria that can cause diarrhea in calves are usually not foreign but naturally present in the intestines. Under certain circumstances, these bacteria can multiply explosively, causing problems at the intestinal level.In this bulletin we explain the differences in terms of infection, symptoms, and curative and preventive treatment options.
Jersey calves have a higher maintenance energy requirement than other cattle breeds. In this bulletin, we discuss the feeding schedule best suited for achieving efficient growth and optimal health in Jersey calf rearing.
Jersey dairy cows are known for producing milk with high levels of fat and protein. Their average production level is around 6,000 kilograms of milk per year. In this bulletin we explain the qualities and difficulties of the Jersey breed and give tips on how to raise strong & healthy Jersey calves.
Calves sometimes lick or suckle each other after the milk feeding. This behaviour is completely natural and happens on every farm. Calves that are suckling each other constantly can be an annoyance to farmers. On some farms, this suckling behaviour between calves can lead to major problems. In this bulletin we explain the suckling motivation of calves and how to prevent and unlearn undesired suckling behaviour.
In this bulletin we discuss the importance of healthy lungs and how to prevent pneumonia in calves.
Although calves are less likely to suffer from heat stress than dairy cows, they can certainly experience discomfort from heat stress, with serious consequences. This bulletin explains the effects of heat stress in calves and how to prevent it.
Calf diarrhea is one of the most common problems in calf rearing. Unfortunately, most diarrhea causes are not that easy to solve with a good tip or the use of a supportive product. Calf diarrhea is one of the biggest frustrations of calf rearing and is responsible for over 50% of calf mortality worldwide.
Optimal rearing, without health problems and high youth growth, ensures the genetic potential of a calf in terms of expected milk production and health can be realized.
Respiratory problems caused by aspiration are the result of suboptimal management and can have serious consequences for a calf. In this Technical Bulletin we explain how to identify and prevent respiratory problems caused by aspiration.
Protein is the building block for calves to grow and stay healthy. But where does the protein in milk replacer come from? In this bulletin we explain the differences between protein sources in calf milk replacers.
Feed additives are added to milk replacers for decades. Additives can be divided into four groups; technological-, sensory-,nutritional- and zootechnical additives. In this bulletin we will discuss several additives which can be categorized into the zootechnical group of additives.
Young calves have a special reflex to ensure that milk bypasses the rumen, reticulum and omasum and flows directly into the abomasum; the esophageal groove reflex. A proper functioning esophageal groove reflex
is of the utmost importance for an optimal digestion and growth of the calves.
The impact of rumen development on the growth of rearing calves is discussed, based the results of a VanDrie feed trial.
In “The 1KG Growth Program” that we developed, several factors are described that play an important part in realising maximum growth of your calves. Calf milk replacer is obviously one of the most important factors involved. In this bulletin we will discuss different feeding strategies that lead to higher growth.
The composition and quality of different kinds of solid feed are discussed.
An overview of the different feeding systems for calves, with each system's pros and cons discussed.
A summary of the most important factors that cause lung problems followed by a recommendation how to decrease the number of lung treatments that is needed.
A set of guidelines to achieve the best possible result in calf rearing. Colostrum, housing, feed and health are discussed. Recommendations and practical tips are given.
The influence of raw materials, protein in particular, on the quality of calf milk replacers and calf rearing in general. Protein digestion, protein sources, protein levels and protein types are discussed.
The benefits of sufficient water quantity and the most important parameters that determine water quantity.
Optimal housing conditions for calves, with a focus on individual housing, housing on straw, space, draught, ventilation and temperature.
The risks of weaning calves early supported by trial results and advice regarding CMR to ensure good health and growth.
Arguments for feeding calf milk replacer instead of cow milk to calves.
Feeding colostrum to the calves directly after birth is very important for the passive immunity and protein level in the blood is a good indicator for this. It is recommended to analyze protein level of calves on a regular base to check the colostrum quality and immunoglobulin transfer.
Instructions on how much and how to mix calf milk replacer.
The effect of the total quantity of milk replacer on the calf’s growth and. Comparison between 25 kg CMR and 35 kg CMR during the milk period. Comparison between 35 kg CMR and 50 kg CMR during the milk period.
The effects of feeding cow milk containing antibiotics to calves (waste milk).
Calves need solid feed for their rumen development, growth and for a smooth switch during the weaning period to a complete solid feed ration. We recommend straw as forage feed, min. 10-20% of total solid feed intake or ad-libitum should be provided.