1. Measurements were made of the losses of nitrogen in the faeces and urine of sixty pigs of approximately 33 kg, given dietary regimens comprising twenty-nine combinations of fish flour (0-800 g/d) and maize starch (0-1200 g/d). 2. The results were used to develop a generalized equation describing N retention as a joint function of N intake and starch intake. 3. The protein-sparing effect of starch was exerted in all circumstances. It was greatest when protein intake exceeded 220 g/d but some effect persisted with protein-free diets. With a high protein supply, the increase in N retention per unit increase in dietary starch decreased from 36 mg/g with the first increment to 3 mg/g with the highest attainable starch intake. 4. From the generalized equation the relationships between net protein utilization and protein concentration and food intake could be described as continuous functions. The equations may be of use in comparing the protein values of diets measured under non-standardized conditions.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1079/bjn19770113 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The role of D-dimer changes in predicting delivery time in preterm premature rupture of membranes: a retrospective analysis.
Arch Gynecol Obstet
January 2025
Department of Obstetrics and Gynecology, Division of Perinatology, Ankara Etlik City Hospital, Ankara, Turkey.
Introduction: Pregnancy induces a hypercoagulable state, characterized by increased coagulation factors and decreased anticoagulants, alongside ongoing fibrinolysis marked by elevated D-dimer (DD) levels. Reference values for DD in pregnancy often exceed the non-pregnant cutoff due to these changes. Elevated DD levels are common in late pregnancy and may correlate with complications such as gestational diabetes, hypertension, and preterm delivery, particularly in cases of preterm premature rupture of membranes (PPROM).
View Article and Find Full Text PDFInvestigating the longitudinal bi-directional relationship between self-reported restrictive eating behaviours and sleep in UK adolescents within the Millennium Cohort Study.
Eur Child Adolesc Psychiatry
January 2025
University of Edinburgh, Edinburgh, United Kingdom.
Objective: This study aimed to investigate the longitudinal bi-directional relationship between self-reported restrictive eating behaviours and sleep characteristics within a sample of UK adolescents from the Millennium Cohort Study (MCS).
Method: Using a Structural Equation Modelling approach, the present study investigated the prospective associations between individual sleep behaviours (e.g.
Residual Mitral Regurgitation Interacts With Transmitral Mean Pressure Gradient to Modify the Association With Mortality Following Transcatheter Edge-to-Edge Repair.
Circ Cardiovasc Interv
January 2025
Department of Cardiac Surgery, University of Michigan, Ann Arbor (G.A.).
Background: The association, if any, between the transmitral mean pressure gradient (TMPG) after mitral transcatheter edge-to-edge repair and 1-year mortality is controversial in patients undergoing mitral transcatheter edge-to-edge repair with the MitraClip system. We sought to estimate the association between intraoperatively measured residual mitral regurgitation (rMR) and TMPG and 1-year mortality among patients undergoing mitral transcatheter edge-to-edge repair to facilitate decisions on additional devices.
Methods: In patients with severe secondary (functional) MR, we analyzed registry data using generalized estimating equations.
Unraveling the Mystery: COVID-19 and Diabetic Complications - A Journey from Pathophysiology to Treatment.
Curr Diabetes Rev
January 2025
Department of Pharmacology, Central University of Punjab, Ghudda, Bathinda, 151401, India.
The connection between COVID-19 and DM unveils a multifaceted interplay that significantly impacts disease severity and management strategies. Initial studies reveal that people with DM had higher severity rates of COVID-19 due to the infection by SARS-CoV-2. The virus solely induces hyperglycemia and, at the same time, profoundly influences the immune and inflammatory reactions, increasing the rate of severe complications and death among diabetes patients.
View Article and Find Full Text PDFAssociation between moderate-to-vigorous physical activity trajectories and academic achievement in Chinese primary school children: a 3-year longitudinal study.
BMC Public Health
January 2025
School of Exercise and Health, Shanghai University of Sport, Shanghai City, China.
Background: Past cross-sectional studies have reported a positive association between moderate-to-vigorous physical activity (MVPA) and academic achievement in children and adolescents. Despite this, the influence of variations in MVPA over time on academic achievement remains yet to be definitively understood. Therefore, this study aims to track the patterns of MVPA and examine how they are associated with academic achievement over a three-year period among Chinese primary school students.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!