Insulin-Like Growth Factor I and II mRNA Levels in Rumen Wall of Calves Fed with Different Physical Forms of Diets

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AKBARI S.; ANSARI MAHYARI S.; MAHDAVI A.H.; ZAHMATKESH A.; DEHNAVI E.

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Journal: JOURNAL OF AGRICULTURAL SCIENCE AND TECHNOLOGY (JAST) Year:2019 | Volume:21 | Issue:3 Page(s): 575-585

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Title

Insulin-Like Growth Factor I and II mRNA Levels in Rumen Wall of Calves Fed with Different Physical Forms of Diets

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Keywords

IGF IQ3

IGF IIQ3

Keratinocyte layerQ3

Rumen villiQ3

Holstein calvesQ3

Abstract

This study was designed to investigate the effects of physical forms and hay contents of diets on gene expression of insulin-like growth factor (IGF) I and II in rumen epithelium of Holstein calves. Twelve male calves were assigned to 4 treatments: ground (GR), texturized (TX), pellet (PL), and ground+10% forage (GF). Calves were weaned on day 50 of age and then slaughtered on day 70 after birth. Rumen epithelial tissue samples were immediately collected for quantification of mRNA abundance. Results indicated that only IGF I expression was influenced by the dietary treatments. A significant (p<0. 05) correlation between IGF I expression and each of histological parameters denoted as length of Rumen villi and diameter of Keratinocyte layer was observed. No significant correlation between IGF II expression and rumen histological parameters was found (p>0. 05). Regarding the results, higher IGF I expression in PL and TX treatments despite the low growth rate might be due to the challenging condition of developing rumen in calves. In fact, the rumen tissue attempted to maintain rumen pH at least by induction of a higher IGF I expression.

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APA: Copy

AKBARI, S., ANSARI MAHYARI, S., MAHDAVI, A.H., ZAHMATKESH, A., & DEHNAVI, E.. (2019). Insulin-Like Growth Factor I and II mRNA Levels in Rumen Wall of Calves Fed with Different Physical Forms of Diets. JOURNAL OF AGRICULTURAL SCIENCE AND TECHNOLOGY (JAST), 21(3 ), 575-585. SID. https://sid.ir/paper/360768/en

Vancouver: Copy

AKBARI S., ANSARI MAHYARI S., MAHDAVI A.H., ZAHMATKESH A., DEHNAVI E.. Insulin-Like Growth Factor I and II mRNA Levels in Rumen Wall of Calves Fed with Different Physical Forms of Diets. JOURNAL OF AGRICULTURAL SCIENCE AND TECHNOLOGY (JAST)[Internet]. 2019;21(3 ):575-585. Available from: https://sid.ir/paper/360768/en

IEEE: Copy

S. AKBARI, S. ANSARI MAHYARI, A.H. MAHDAVI, A. ZAHMATKESH, and E. DEHNAVI, “Insulin-Like Growth Factor I and II mRNA Levels in Rumen Wall of Calves Fed with Different Physical Forms of Diets,” JOURNAL OF AGRICULTURAL SCIENCE AND TECHNOLOGY (JAST), vol. 21, no. 3 , pp. 575–585, 2019, [Online]. Available: https://sid.ir/paper/360768/en

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