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Calvin Pen Alternatives   

Phil Durst
Extension Dairy Educator

The calving pen is one of the most strategic locations on the farm. The four objectives of good calving pen management include:
•  comfort and low stress for the dam,
•  low health risk to dam and calf,
•  opportunity for seclusion by dam, and,
•  convenience for people working with the cow and calf.

There are various ways to achieve those objectives. Access to clean, dry pasture is the oldest option that farmers have used and is still ideal during times of the year when weather is favorable. But as we’ve moved cows inside on many dairy operations we’ve tried to keep the best features of pasture and add convenience to monitor calving and the ability to feed and water them.

Traditionally, we have recommended individual calving pens as the preferred maternity facility. Calving in individual pens makes it easier to work with the dam and to reduce the opportunity for both the cow and the calf to be exposed to manure-borne pathogens from other cows.

Cows may be in the calving pen anywhere from a day to a week. In cases like this, designing pen layout and managing for access to fresh feed and water is important. Another factor to consider when cows are in individual calving pens for an extended period of time is the isolation of these social animals away from herdmates and the potential impact of that on fresh cow performance.

As Farms Get Larger...
A disadvantage of individual calving pens can be the number of pens and space it takes for a large herd. According to Cook (2007) in “Makin’ Me Dizzy – Pen Moves and Facility Designs to Maximize Transition Cow Health and Productivity”, a 1,000-cow dairy will average 20 calvings per week, with a range of 10 to 45. To accommodate 90 percent of calvings, the author estimates pen requirement as 140% of average weekly calvings. If a producer planned facilities based on this estimate and kept cows in pens for an extended period of time, this would mean dedicating more than 4,000 sq ft of pen space for calving at approximately 144 sq ft/pen.

Some farms use group calving pens with less than the proportional space. While recommended space for group maternity pens (Graves et al., 2005) is 175 to 200 sq. ft/cow, some farms have pens sized for far fewer than the 140% of weekly calvings. While this reduces the building space, the basic principles of maternity pens including opportunity for seclusion by the calving dam and reduced risk of exposure to manure for both the dam and the calf still apply. Therefore, management becomes even more critical in a group calving pen and potential risks are greater.

To mitigate risk in group calving pens and to lessen the space demand of individual pens, as well as to improve calving performance, some farms are moving cows into calving pens later in the calving process and keeping them in the pen for a shorter length of time.

Length of Time in Calving Pen
One farm used to move cows from a freestall close-up group to individual calving pens when they noticed the birthing process started. However, they experienced too many cows that would stop progress towards parturition after the move and as a result required intervention and, frequently, pulling of calves. Maybe this was due to the activity level around the herdsman’s office, located near the calving pens. But, whatever the reason for the interruption of calving, something needed to change.

On this farm, they changed when they moved dams into the maternity pen, waiting until the cow was much further along in the calving process. Now when they move them, cows are seemingly past the point of no return in calving and usually calve within an hour and without assistance.

This type of system like that depends on frequent observation (every 20 minutes around the clock) of the close-up dry cow pen, and knowledgeable and committed employees to move animals at the optimal time.

This system also de-emphasizes feed availability in the calving pen because it is used for such short periods of time. That can be an advantage in logistics. Cows on this farm are in the calving pen generally for only 1 to 2 hr.

Based on short occupancy in calving pens, researchers from Kansas State University and Double A Dairy of Jerome Idaho, recommend sizing calving pens for 70 percent of daily calvings with a minimum of 2 pens. Using a 1,000-cow dairy as an example, an average 90th percentile of 28 calvings per week, would equate to 3 calving pens.

Importance of a Commitment to Observation
Whatever system is used, it is essential to reduce the incidence of cows calving in a freestall scrape alley. The exposure of these calves to manure-borne pathogens is considerably greater and the environment less hospitable. Farms that routinely have employees monitor this group, are able to keep that occurrence to less than 3 percent of calvings.

Access Provided for Self-Seclusion
Another producer, with a smaller herd and less help, takes advantage of the calving cows’ natural inclination to go off by themselves to calve. In their barn, the freestall area for close-up dry cows is adjacent to the straw-bedded pens for calving, with only a short gate in-between. During the day, they move dry cows that appear ready to calve from the free stall area into the straw pen. At night, they simply open the gate between the two areas and cows that calve during the night naturally seek that area in which to calve. This producer report that as long as they don’t neglect to open the gate at night calves are not born into the scrape alley.

Managing Pathogen Exposure
Even cows that calve in individual stalls are often exposed to pathogens. Calving pen cleanliness is important to the uterine health of the calving dam. Generally, cows that get a uterine infection became infected in the calving pen.

In addition, the newborn calf is exposed to pathogens when it is very vulnerable due to its undeveloped immune system. Calving pens sampled in an environmental study on Michigan Johne’s Disease Control Demonstration Project farms were found to be contaminated with the pathogen that causes Johne’s Disease, 17% of the time. This was on farms where there was an awareness of disease transmission, a knowledge of some of the infected animals, and a commitment to reduce herd prevalence. And yet it still occurred.

Manure can be left on gates dividing pens and stay there long past the contributing cow’s residency. Cows in neighboring pens may spread manure through gate dividers and bacteria may survive on the floor or walls. Producers must work to reduce exposure, but elimination of all pathogens is not attainable. Therefore, removing calves from calving pens as soon as possible after they stand reduces the opportunity for exposure.

Because the animals at greatest risk of infection and development of Johne’s Disease are newborn calves, having a separate pen for dams identified as Johne’s test-positive can reduce the risk to the majority of calves born in the herd. That pen should be separated from others if possible and be at the end toward which pen manure is scraped so that risk of contamination of “clean” pens is reduced.

Health of Calves Born in Individual Pens vs. Group Pens
Management is the key to making any system successful. Pithua et al. (2009) evaluated the prevalence of calf diarrhea, respiratory disease and morbidity attributable to any cause in calves that were born in individual calving pens, cleaned between each calving, and calves born in group calving pens. All calves were separated from the dams within 2 hr of birth. Calves were evaluated through 90 days of age.

The risk of diarrhea, pneumonia and morbidity due to any other cause was not significantly different between calves born in single-cow vs. multiple-cow calving pens. This study does not mean that there isn’t potentially greater risk to multiple cow pens, but that it can be managed.

Importance of Close-up Pen Space
While this article focuses on the maternity area itself, the performance of the dam is also highly impacted by crowding and cleanliness in the close-up dry cow pen. Whether a pack pen or freestalls, these animals are very sensitive to overcrowding. Overcrowding should be avoided at all costs. It is a major factor in both fee space availability and cleanliness. A socialization factor also is at work when new animals are added to the pen on a routine basis. 

In regard to socialization, one producer loads pens with pregnant cows 2 to 3 weeks prior to expected calving and then does not bring any new animals into that pen thereafter. This controls both socialization and pen density. Cows leave the pen soon after they calve.

Summary
There is no one best answer for calving pen system. It depends on space and labor constraints on each farm. However, each system requires a high level of management of this critical time for both dams and calves. Keeping the four main objectives in mind, training employees to provide consistent and prompt care, and evaluating the results for both cows and calves will help to achieve a high level of performance in the calving pen.

References:
Cook, N.B. 2007. Makin' Me Dizzy – Pen Moves and Facility Designs to Maximize Transition Cow Health and Productivity. www.extension.org/pages/11101/makin-me-dizzy-pen-moves-and-facility-designs-to-maximize-transition-cow-health-and-productivity

Graves, R.E., Tyson, J.T., McFarland, D., and Wilson. 2005. Dry Cow Bedded Pack, Maternity, Post-Fresh Freestall Shelter, Drive-Through Feeding. No. DIP 441.

Pillars, R.B., Grooms, D.L. and Kaneene, J.B. 2009. Longitudinal study of the distribution of Mycobacterium avian subsp. Paratuberculosis in the environment of dairy herds in the Michigan Johne’s disease control demonstration herd project. Can Vet J. 2009;50(10):1039-46.

Pithua, P., Wells, S.J., Godden, S.M. and Raizman, E.A. 2009. Clinical trial on type of calving pen and the risk of disease in Holstein calves during the first 90 d of life. Prev Vet Med. 2009 May 1;89(1-2):8-15. Epub 2009 Feb 3.

Smith, J.F., Harner, J.P., Brouk, M.J. and Mosley, S. 2010. Pros and Cons of Centralized Calving. High Plains Dairy Conference Proceedings:61-70.

 


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Michigan Dairy Review is published and mailed to all Michigan dairy farmers and individuals working in allied industries. With its ever increasing on-line presence, the MDR target audience has spread beyond Michigan and the U.S.; today electronic subscribers are located in places such as Australia, The Scandinavia, Italy, Mexico, Ireland, Peru, and New Zealand.  

The MDR is the primary communications vehicle for research findings, extension programming, and teaching between faculty and staff in MSU dairy programs and the dairy industry. The MDR web site is paid for by the C. E. Meadows Endowment.

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