Major constituents, leptin, and non-protein nitrogen compounds in mares' colostrum and milk.

Milk Yield and Blood Metabolite Profile in Late Pregnancy in Lori Ewes Receiving Diets Containing Undegradable Protein Sources

An experiment was conducted to investigate the effects of supplementing Lori ewes with rumen-undegradable protein (RUP) in late pregnancy on their performance and that of their lambs. Milk yield and blood metabolite profile were measured. Forty pregnant ewes were used in a completely randomized design trial with four treatments: 1) a basal diet (control); 2) with a supplement of 5% fishmeal; 3)...

A study of Lusitano mare lactation curve with Wood's model.

Milk yield and composition data from 7 nursing Lusitano mares (450 to 580 kg of body weight and 2 to 9 parities) were used in this study (5 measurements per mare for milk yield and 8 measurements for composition). Wood's lactation model was used to describe milk fat, protein, and lactose lactation curves. Mean values for the concentration of major milk components across the lactation period (18...

Effect of Maternal Smoking on Breast Milk Interleukin-1α, β-Endorphin, and Leptin Concentrations

Tobacco smoke is immunotoxic, but the effect of smoking on the immunologic function of the mammary gland of mothers who smoke cigarettes ("smoker mothers") has not been studied. Our objective was to test, in smoker mothers, the colostral and transitional milk concentrations of interleukin-(IL)1alpha. The immunomodulators beta-endorphin and leptin were also tested. Pregnant women who self-identi...

Biological and organoleptic properties of milk protein as affected by dilution with non-esential nitrogen sources

Leptin concentration in breast milk and its relationship to duration of lactation and hormonal status

BACKGROUND Leptin, a hormone present in breast milk, is involved in energy regulation and metabolism. The objectives of this study were to assess leptin concentrations in breast milk during the first 180 days postpartum, and to determine the relationship between the concentrations of milk leptin and circulating hormone levels in lactating women. METHODS Between April 2005 and January 2006, bl...