5 uppsatser
en väntrumsundersökning
… when they wanted to have their first and last child and their knowledge about fecundity in relation to the background factors: age, gender and educational level. This study will also investigate differences regarding university students? desire to have children along with when …
… There, the age at maturity seemed to be between four and five years. The fecundity for the graylings in this study correlate rather well with other studies. The fecundity varied between 7200-10900 eggs/kg bodyweight. This study showed that: (i) the majority of the graylings are …
… ewe covered has an important role in sheep production. The ewe’s individual fecundity and ability to raise the lambs have great importance but also breed, season and year have significant influence on the amount of lambs born and weaned. The lamb survival is affected by birth …
… rate of retained placenta in Friesian mares and a decrease in fertility and fecundity of the Hucul horse. Larger populations may be affected by inbreeding as well. Inbreeding in the Thoroughbred horse has increased during the past ten years, which may explain a shorter and more …
Fertilitetsegenskaper har ofta låga arvbarheter och selektion baserat på fenotyp är ofta ineffektiv och långsam. För att förbättra fertilitetsegenskaper som ovulationsmängd och kullstorlek hos får är det effektivast att selektera avelsdjur utefter deras genotyp. Olika mutationer …
