1. Serum prolactin (PRL) levels, both basal and post-suckling peak, were estimated in fifty-seven lactating women. 2. Basal PRL levels were significantly higher in all lactating women irrespective of the duration of lactation as compared to the levels in non-pregnant, non-lactating women. 3. There was significant positive correlation (r 0.69, P less than 0.001) between the basal PRL levels and ...

The study was conducted on 41-second lactation Holstein cows of German origin. shelter type is a semi-open field and the research period 12 months. activities in first 100 days per day were 451.4 ± 133.5, second days, it determined at 420.78 118.0. are divided into 3 parts within 24 hours (at night, during between two milkings, evening). While there no statistical difference 200 lactation, lowe...

The possible existence of a relationship between breastfeeding duration, educational status and waist-hip ratio (WHR) as a measure of fertility and biological fitness in a sample of the Polish population is examined in this article. Data on age, height, weight, waist and hip circumferences, educational level (as a proxy for socio-economic status), and duration of breast feeding were collected f...

Digital dermatitis (DD) is a contagious disease of cattle affecting the skin adjacent to the claws. Disease dynamics of DD have been described to some extend, but we still need to quantify the duration of lesions and look into non-treatment factors affecting this. The aim of this study was to estimate the duration of lesions due to DD and to evaluate parity and lactation stage as potential risk...

The influence of litter separation (LS) that included a change in housing environment and social status of sows, boar exposure (BE), and parity on estrous expression by sows during and after lactation was examined in two experiments utilizing 140 crossbred sows. In Exp. 1 (Yorkshire X Duroc sows), limiting duration of LS to 6 or 3 h/d during the last 8 d of lactation in two trials, while mainta...

CONTEXT Lactation is associated with improved glucose and insulin homeostasis, independent of weight change. OBJECTIVE To evaluate the association between lactation history and incidence of type 2 diabetes. DESIGN, SETTING, AND PARTICIPANTS Prospective observational cohort study of 83,585 parous women in the Nurses' Health Study (NHS) and retrospective observational cohort study of 73,418 p...

Although breast feeding is not an absolutely reliable method of contraception yet its birth spacing effect is of great importance in communities where the prevalence of alternative contraception is too low. It is well recognized that breast feeding affects the fertility of women by delaying resumption of menses. The extent to which duration of breast feeding effects the duration of Postparturm ...

The sucking behaviour of lamb genotypes, selected for an increase or decrease in weaning weight and a random bred line, was studied during the first six weeks of lactation. Sucking frequency and duration were recorded as were lamb growth rates and lactation performance of the ewes. There were no apparent differences between the lines in sucking behaviour even with large variations between lines...