Ewe nutrition and colostrum

Abstract

To reduce the use of prophylactic antibiotics, nutrition of the ewe in late pregnancy needs to be addressed in order to maximise colostrum production and minimise neonatal mortality. A key aspect is the correct balance of energy and protein provided to the rumen micro-organisms. The volume and timing of colostrum administration is also essential as lambs cannot absorb colostrum after the first 36 hours of life and the immunoglobulin G concentration in colostrum decreases at a rate of 3.3 mg/kg/hour after parturition up to 23 hours at which the level becomes zero. Undernutrition decreases the quality and quantity of colostrum, and decreases the maternal bond with the lamb, which decreases the suckling of the ewe and, therefore, reduces the amount of colostrum the lamb ingests. Vet involvement through monitoring the metabolic profiles of the ewes can be beneficial in managing the nutrition of ewes in late pregnancy and the quality of colostrum produced.