Abstract
Two experiments were conducted to evaluate effects of acetic, propionic and butyric acids given intraruminally at different molar proportions or individually on the rumen papillae growth and insulinlike growth factor-I (IGF-I), IGF binding protein-3 (IGFBP-3), growth hormone (GH) and insulin in plasma and/or tissues in growing sheep nourished by total intragastric infusions. The animals were daily infused with volatile fatty acids (VFA) mixtures at different molar proportions or individual VFA, casein, glucose and corn oil for a total of 1.2 times of maintenance requirement of energy and protein for 12 days. At the end of each experiment, the sheep were slaughtered and blood and tissue samples were obtained for determination of rumen papillae growth and hormones mentioned above. The present study indicated that the papillae growth and IGF-I concentration in rumen tissue of growing sheep nourished by intragastric infusions were not affected significantly by VFA mixtures with different molar proportions or by acetic, propionic and butyric acids individually (P > 0.05) when they were supplied at the same energy level and the synthesis and secretion of IGF-I could be more associated with the energy level rather than energy source of VFA.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
