With the new season’s calves starting to make an appearance we thought it would be timely to revisit the physiology of the calving process and the common reasons why interventions may be required. As with any medical emergency, the success of calving first aid is highly dependent on the prompt and effective action. There are
February 2018 Vaccines for the prevention of calf scours Over the past two years, the use of vaccines for the control of calf scours has become commonplace on many local dairy farms. They are an important and relatively inexpensive management tool which when used correctly can have significant positive impact on calf morbidity and mortality.
Like most baby mammals, calves are less capable of regulating their body temperature than adults. If a calf feels cold stress, its growth rate will slow down and it will be more susceptible to health issues. Animals have a thermo neutral zone where they are at a comfortable temperature and don’t need to use any
A dairy cow’s stomach is made up of four parts and relies heavily on fermentation for the digestive process (rumination). The four stomach parts are reticulum, rumen, omasum and abomasum (see figure 3 below). The reticulum and the rumen is where fermentation occur, the omasum absorbs water and minerals from the rumen, and the abomasum
Zoe Vogels What happens when something stresses a calf? At a physiological level, it sets off a chain of chemical reactions in response to the stressful event. The calf’s brain tells the adrenal glands to make the hormone cortisol. Cortisol increases the blood pressure, makes the heart beat more strongly, diverts blood to the
Calves are born with no natural protection from disease and it can take 3 to 4 weeks for them to develop their own antibodies. One of the best ways to protect your calves during this time, is to give them colostrum ─ the first milk produced by the cow or heifer after she has calved.