Influence of Different Feed Physical Forms on Mandibular Gland in Growing Pigs
Open Access
- 24 May 2020
- Vol. 10 (5), 910
- https://doi.org/10.3390/ani10050910
Abstract
A study was performed on the mandibular gland obtained from growing pigs enrolled in a wide research project aiming to test the effects of different feed physical forms on animal health, production and welfare. We used 48 pigs fed for four weeks with different dietary treatments based on different grinding intensities and compactions of the same diet, namely coarsely ground meal (CM), finely ground pelleted (FP) and coarsely ground pelleted (CP) diets. Samples were analyzed by conventional histochemistry to identify the glycohistochemical profile and by immunohistochemistry to localize aquaporin 5, apelin and apelin receptor. Statistical elaborations were performed using the Stats R-package, version 3.5.3. Pig mandibular gland adenomere increased both the quantity and acidity of produced glycoconjugates from CM to FP and CP diets. This probably calls forth higher watery saliva, thus promoting a better feed softening facilitating the amalgamation of the bolus. Mandibular gland increased aquaporin 5 positivity in the CP diet, supporting the hypothesis of an augmented demand for water. Based on apelin/receptor localization, it was hypothesized that in pig mandibular gland the apelinergic system likely performs an endocrine control on the demilunes activity and a paracrine control on ducts, facilitating the production of a more fluid saliva.Keywords
This publication has 53 references indexed in Scilit:
- Role of aquaporins and regulation of secretory vesicle volume in cell secretionJournal of Cellular and Molecular Medicine, 2008
- A possible role for hypoxia-induced apelin expression in enteric cell proliferationAmerican Journal of Physiology-Regulatory, Integrative and Comparative Physiology, 2008
- Paracrine and autocrine mechanisms of apelin signaling govern embryonic and tumor angiogenesisDevelopmental Biology, 2007
- Interaction between transcellular and paracellular water transport pathways through Aquaporin 5 and the tight junction complexProceedings of the National Academy of Sciences of the United States of America, 2007
- Apelin signalling: a promising pathway from cloning to pharmacologyCellular Signalling, 2005
- Glycoconjugate distribution in gastric fundic mucosa of Umbrina cirrosa L. revealed by lectin histochemistryJournal of Fish Biology, 2005
- Structural basis of water-specific transport through the AQP1 water channelNature, 2001
- Salivary Acinar Cells from Aquaporin 5-deficient Mice Have Decreased Membrane Water Permeability and Altered Cell Volume RegulationOnline Journal of Public Health Informatics, 2001
- Isolation and Characterization of a Novel Endogenous Peptide Ligand for the Human APJ ReceptorBiochemical and Biophysical Research Communications, 1998