Thursday, December 23, 2010
I am not referring to those coming home for Christmas. It is your broodmare that I am concerned about. As you know, mares generally do not cycle through the winter months. Their ovarian cycle is influenced more by day length, then by ambient temperature. As the day length becomes longer in the spring, it triggers the mare to resume normal cycling. Since getting the mare cycling is the first step in getting her bred, now is the time to start "tricking" your mare into thinking the days are longer than they really are. The trick is to provided a total of 16 hours of light every day. If the mare is turned out during the day, then she needs to be stalled at night with the lights left on long enough to give her 16 total hours of light.
As a word of caution, it does not work well to just leave the lights on all the time. Some period of darkness is still necessary. Also, the light has to be fairly bright. The easiest way to assess if there is adequate light is to grab a newspaper and try to read the print in the darkest part of the stall. If you can not, then you either need a higher watt bulb or additional light sources.
It takes, on average, 70 days for a mare to have a breedable cycle after starting exposure to prolonged light. Mares will typically start to shed some of their hair with 30 to 60 days of starting lights. If you plan to breed your mare in February, she should already be on lights. If you do not care how early the foal is born, you do not have to mess with artificial lighting. Most mares will start cycling on their own by late March or early April.
As mares go from not cycling in the winter to having normal cycles in the spring, they go through a period of transition. During this period of transition they may have very irregular, non-fertile heats. If necessary, we can encourage them out of transiton more quickly with the use of certain medications.
If you intend to breed your mare early in 2011, make sure that right now she is seeing at least 16 hours of light every day.
Saturday, December 11, 2010
I spent most of this past week in Baltimore attending the 56th Annual Convention of the American Association of Equine Practitioners (www.aaep.org). This meeting brings together some 5,000 equine health professionals and has evolved into the premier source of the latest advances in equine veterinary medicine. I hope to share some of the highlights from this meeting with you over the next couple of weeks.
The conference opened with a talk about the latest buzzword: welfare. The continually growing issue of unwanted horses is bringing a significant amount of attention to how we can provide for the welfare of these horses. A recent survey attributed the rapid increase in ‘unwanted’ horses to the closing of horse slaughter facilities, a crippled economy, euthanasia costs and indiscriminate breeding.
Since the ban on horse slaughter a couple of years ago, the ‘unwanted horse’ problem has become a significant issue. Despite the work of some legislatures, it appears unlikely that horse slaughter will ever return to the U.S. While very little horse meat is consumed in the U.S., worldwide the demand for horse meat is at an all time high. Every year there are approximately 5 million horses processed for meat. That is a 28% increase from 1990.
So what are the solutions to the problem? That is the problem, currently there are not any easy ones. Current suggestions are to re-open domestic slaughter facilities (seems unlikely that will ever happen), increase the number (and funding) of horse sanctuaries and educate the public on responsible horse ownership. Some would like to see an increase in the number of adoption facilities, but nationwide only about half of the horses that enter an adoption facility are every adopted out. So it does not take long for an adoption facility to turn into a sanctuary.
Our views of animal welfare are conditioned by our personal knowledge base and life experiences. People view welfare in different perspectives: what is the healthiest for the animal vs. what allows the animal to ‘feel’ the best, or have the least amount of stress vs. what the natural behavior of the animal is. As the public has become progressively more disengaged in animal agriculture their personal knowledge base and life experiences have shifted which one of these perspectives they value most. In the end, if society perceives something is wrong, science and logic are unlikely to change that perception.