Reproduction in Cattle
The acute febrile stage appears suddenly, especially noticeable in dairy cattle. Cattle show signs associated with a fever. Their rectal temperature will generally be over 40oC. Sick cattle will stand with their backs arched and heads held low with muzzles extended, drooling saliva. Often there is a discharge from the eyes and nostrils. Feeding and cud chewing stop and milk production, especially in dairy cows, is reduced.
Cattle reproduction – beef herd
The second stage is muscular stiffness and lameness in one or more limbs. Some degree of secondary bloat may also occur due to general inflammation of the abdominal cavity and ruminal stasis. The lameness may shift between limbs. Joints may be visibly swollen.
During the recovery stage, the great majority of affected animals resume eating and drinking. Animals may go down, with heavy animals in good condition being most affected. Some animals remain down due to muscle damage or damage to the spinal cord. Some animals that recover from ephemeral fever will have the staggers due to spinal cord damage.
Anatomy of the Cow’s Reproductive Tract - The Cattle Site
Pregnant cows may abort due to the high fever and heifers with young calves may mismother their calves. Post mortem examination of cattle that die is important to rule out other acute febrile diseases that often occur under the same conditions as ephemeral fever and present in a similar manner, such as tick fever. The diagnosis of ephemeral fever during epidemics is made on the presence of lameness, muscular stiffness, pain, rapid spread of the disease through herds and short fever.
The BEF virus can often be identified from a blood sample taken from animals in the fever stage of the disease. Alternatively, two blood samples, the first obtained during the fever stage and the second fourteen days later can be examined for development of antibodies to ephemeral fever virus. A vaccine is registered for the prevention of BEF. It is only available through your veterinarian as it is a prescription only product.
Great care must be taken with this vaccine if the full benefit is to be obtained.
Use all reconstituted product immediately. Do Not Freeze. Protect from light. Annual boosters are recommended. It is advisable to commence vaccination in the winter months so that cattle are fully immunised prior to summer rains. The vaccine has provided good levels of protection against BEF. Field observations have shown that some vaccinated cattle can develop mild disease, however the severity and duration of illness is very much less than in unvaccinated cattle. Treatment with anti-inflammatory drugs has been shown to reduce the course of the disease and calcium injections may aid animals that are down.
Managing cow reproduction: an overview
Most animals will recover if provided with water and shade, however, in extensive management situations this is often impossible to provide. Email Address. Starting with Gympie Veterinary Services in Shannon's interests include small animal surgery and medicine.
He has also completed post graduate courses in ophthalmology and surgery. Outside of work Shannon enjoys family time, fishing and diving. Quick Navigation. Cattle Reproduction To ensure ongoing herd productivity, in any beef cattle enterprise, continual identification of unproductive stock, is essential to ensure ongoing herd productivity. Benefits of Pregnancy Testing Pregnancy testing will allow you to accurately identify pregnant cows and will also identify unproductive females within the herd. Why Pregnancy Test Non-pregnant cows are unproductive and should be removed from the herd.
How accurate is pregnancy testing? A herd health approach to dairy cow nutrition and production diseases of the transition cow.
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Risk factors for postpartum ovarian dysfunction in high producing dairy cows in Belgium: a field study. Parturition to resumption of ovarian cyclicity: comparative aspects of beef and dairy cows. Physiological and health factors affecting fertility in beef and dairy cows. Cattle Practice.
Triennial lactation symposium: effects of stress on postpartum reproduction in dairy cows. J Anim Sci. Embryo death in cattle: an update. Reprod Fert Develop. The importance of negative energy balance and altered corpus luteum function to the reduction of oocyte and embryo quality in high yielding dairy cows. Part I — the importance of negative energy balance and altered corpus luteum function to the reduction of oocyte and embryo quality in high-yielding dairy cows. Reprod Domest Anim.
Reproduction Cattle/Sheep Services
Reduced fertility in high-yielding dairy cows: are the oocyte and embryo in danger? Part II. Mechanisms linking nutrition and reduced oocyte and embryo quality in high-yielding dairy cows. LeBlanc S. Monitoring metabolic health of dairy cattle in the transition period. J Reprod Dev. Integration of physiological mechanisms that influence fertility in dairy cows. Effect of dietary-induced increases in circulating insulin concentration during the early postpartum period on reproductive function in dairy cows.
Immunohistochemical visualization of insulin receptors in formalin-fixed bovine ovaries post mortem and in granulosa cells collected in vivo. Hormonal and metabolic profiles of high-yielding dairy cows prior to ovarian cyst formation or first ovulation post partum. Biol Reprod. Special Issue ;—6. Short communication: insulin alters hepatic progesterone catabolic enzymes cytochrome P 2C and 3A in dairy cows. Effects of dietary crude protein, breed, parity, and health status on the fertility of dairy cows.
Feeding soybean meal increases the blood level of isoflavones and reduces the steroidogenic capacity in bovine corpora lutea, without affecting peripheral progesterone concentrations. The effect of marine algae in the ration of high-yielding dairy cows during transition on metabolic parameters in serum and follicular fluid around parturition.
Effects of differential supplementation of fatty acids during the peripartum and breeding periods of Holstein cows: I. Uterine and metabolic responses, reproduction, and lactation. Non-esterified fatty acids in follicular fluid of dairy cows and their effect on developmental capacity of bovine oocytes in vitro. Reduced fertility in high yielding dairy cows: are the oocyte and embryo in danger? Comparison of embryo quality in high-yielding dairy cows in dairy heifers and in beef cows. Recent developments in the roles of vitamins and minerals in reproduction.
Effect of injectable vitamin E on incidence of retained fetal membranes and reproductive performance of dairy cows.
Bovine herpesvirus 4 is tropic for bovine endometrial cells and modulates endocrine function. Biosecurity for reproductive diseases. Defining and diagnosing postpartum clinical endometritis and its impact on reproductive performance in dairy cows. J Dairy Sci, ;— Defining postpartum uterine disease in cattle.