An experiment was conducted to estimate the threonine requirement of pregnant swine. L-threonine was added to a fortified corn-gelatin diet and fed at a rate to provide five threonine levels of 3.59, 4.95, 6.31, 7.67 and 9.03 g/d. Twenty-five crossbred gilts were randomly assigned to these five dietary treatments. Increasing threonine resulted in a difference (P less than .01) in nitrogen (N) retention, with maximum retention at 4.95 g/d threonine intake. Blood samples were drawn before and after feeding. Although plasma urea N did not change significantly, the lowest level occurred at an intake of 4.95 g/d threonine. As threonine intake increased, plasma threonine increased quadratically (P less than .05). This increase was accompanied by a quadratic (P less than .005) decrease in plasma lysine. Sow weight gains increased quadratically (P less than .01) with increasing threonine levels. Litter weight, number of pigs born, baby pig gains, daily milk yield and milk protein were not influenced by threonine levels. The lysine-alpha-ketoglutarate reductase activity of the sow liver samples increased linearly (P less than .05) as dietary threonine levels increased. Based upon metabolic criteria 4.95 g/d L-threonine met the requirement for animals in this experiment. If 75% of threonine in a corn-soybean meal diet is available, the threonine requirement for reproduction would be no higher than 5.4 g/d or .30% dietary threonine when daily feed intake is 1.82 kg.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.2527/jas1983.5661345x | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Shotgun and targeted proteomics of Mycolicibacterium smegmatis highlight the role of arginine phosphorylation in the functional adaptation to its environment.
J Proteomics
January 2025
State Key Laboratory of Medical Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences Beijing, Research Unit of Proteomics & Research and Development of New Drug of Chinese Academy of Medical Sciences, Institute of Lifeomics, Beijing 102206, China. Electronic address:
Although the phosphorylation of serine (S), threonine (T), and tyrosine (Y) is well-established, arginine phosphorylation (pR) has recently garnered significant attention due to its crucial role in bacteria pathogenicity and stress response. Mycolicibacterium smegmatis, a nonpathogenic surrogate of Mycobacterium tuberculosis, serves as a model for studying mycobacterial pathogenesis. A recent proteomics study identified six pR proteins in M.
View Article and Find Full Text PDFcircLOC375190 promotes autophagy through modulation of the mTORC1/TFEB axis in acute ischemic stroke-induced neurological injury.
Clinics (Sao Paulo)
January 2025
Department of Neurology, Daqing Oilfield General Hospital, Daqing City, Heilongjiang Province, China. Electronic address:
Objective: The authors explored differentially expressed circRNAs in Acute Ischemic Stroke (AIS) and revealed the role and potential downstream molecular mechanisms of circLOC375190.
Methods: circLOC375190 expression was modulated by lentiviral injection in the brain of transient Middle Cerebral Artery Occlusion (tMCAO) mice. Neurological dysfunction was assessed, as well as infarction size, histopathological changes, and neuronal apoptosis in tMCAO mice.
Genome-wide DNA methylation and transcriptome sequencing analyses of lens tissue in an age-related mouse cataract model.
PLoS One
January 2025
Hongqi Hospital of Mudanjiang Medical University, Mudanjiang, Heilongjiang, China.
DNA methylation is known to be associated with cataracts. In this study, we used a mouse model and performed DNA methylation and transcriptome sequencing analyses to find epigenetic indicators for age-related cataracts (ARC). Anterior lens capsule membrane tissues from young and aged mice were analyzed by MethylRAD-seq to detect the genome-wide methylation of extracted DNA.
View Article and Find Full Text PDFMultiomics Analysis of Exportin Family Reveals XPO1 as a Novel Target for Clear Cell Renal Cell Carcinoma.
Int J Genomics
January 2025
Department of Medicine, Xinyang Vocational and Technical College, Xinyang, Henan, China.
Recently, exportin gene family members have been demonstrated to play essential roles in tumor progression. However, research on the clinical significance of exportin gene family members is limited in clear cell renal cell carcinoma (ccRCC). Pan-cancer data, ccRCC multiomics data, and single-cell sequence were included to analyze the differences in DNA methylation modification, single nucleotide variations (SNVs), copy number variations (CNVs), and expression levels of exportin gene family members.
View Article and Find Full Text PDFAngelica sinensis polysaccharide as potential protectants against recurrent spontaneous abortion: focus on autophagy regulation.
Front Med (Lausanne)
January 2025
Department of Integrated Traditional Chinese Medicine (TCM) and Western Medicine, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, China.
Introduction: Recurrent spontaneous abortion (RSA) represents a significant clinical challenge, with its underlying mechanisms yet to be fully elucidated. Despite advances in understanding, the precise pathophysiology driving RSA remains unclear. Angelica sinensis, a traditional herbal remedy, is frequently used as an adjunctive treatment for miscarriage.
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!