Nutrition has an important impact on the reproductive performance of dairy cattle. Energy is the major nutrient required by adult cattle and inadequate energy intake has a detrimental impact on reproductive activity of the female bovine. Cows under negative energy balance have extended periods of anovulation. Postpartum anestrus, as well as infertility, is magnified by losses of body condition ...

BACKGROUND Pregnancy and delivery markedly influence thyroid function. However, the comparative prevalence of gestational thyrotoxicosis (GT), new onset of Graves' disease during pregnancy (GD during pregnancy), postpartum destructive thyrotoxicosis (PPT), and postpartum Graves' thyrotoxicosis (PPGD) has not yet been determined. METHODS We prospectively registered and performed a review of 41...

BACKGROUND Insertion of an intrauterine device (IUD) at different times or by different routes during the postpartum period may increase the risk of complications. METHODS We searched Medline, Lilacs and Cochrane Collaboration databases for articles in any language, between database inception until December 2008, which compared outcomes of postpartum IUD insertion time intervals. Search terms...

Nutrition has an important impact on the reproductive performance of dairy cattle. Energy is the major nutrient required by adult cattle, and inadequate energy intake has a detrimental impact on reproductive activity of the female bovine. Cows under negative energy balance have extended periods of anovulation. Postpartum anestrus, as well as infertility, is magnified by losses of body condition...

OBJECTIVE To assess dietary intake during pregnancy and postpartum according to skin color. METHODS A longitudinal prospective study was carried out comprising 467 postpartum women aged between 15-45 years in the city of Rio de Janeiro, Southeastern Brazil, in 1999-2001. A food frequency questionnaire was administered at two weeks postpartum (intake covering the pregnancy period) and at six m...

The aim of the present study was to investigate nutritional and metabolic parameters during the dry and early postpartum periods of ovulatory and anovulatory cows, as well as their postpartum reproductive performance. Blood samples from 20 multiparous Holstein cows were collected once a week from the far-off dry period to 3 weeks postpartum. Early postpartum (0-3 weeks) ovulation was confirmed ...