Determination of Gestational Age in Sheep and Goats Using of Placentomes.
by F. Doize, H. Carabin and D. Belanger
University of Montreal, Canada
Three experiments were conducted to determine gestational age in the ewe and doe by measuring placentomes with a B-mode ultrasonograph and a 5 MHz transducer. In most flocks of sheep and goats, natural service dates are generally unobserved or unrecorded, making fertile breeding impossible to determine. This is particularly so in the goat. Accurate pregnancy diagnosis would provide essential information for effective herd management practices such as the culling of nonpregnant females and the determination of the number of fetuses, the latter being especially important in sheep herds. Such information would allow producers to group animals based on their nutritional needs so that they are fed appropriate rations during the last trimester of pregnancy. Furthermore, accurate information on the stage of gestation would be useful to dry off lactating females at an adequate period of time and to monitor females near term.
A compile of useful resources in sheep and goats.