titoli, abstracts, parole chiave >>>
Permanent effects of starch and fiber supplid during uterine and postnatal life on first lactation performance of dairy sheep

Ledda, Antonello (2018) Permanent effects of starch and fiber supplid during uterine and postnatal life on first lactation performance of dairy sheep. Doctoral Thesis.

Full text disponibile come PDF Richiede visualizzatore di PDF come GSview, Xpdf o Adobe Acrobat Reader


This Thesis shows the lactation performances of sheep exposed to different dietary carbohydrates during uterine life, growing and mid lactation.
The first Chapter is a literature overview of dietary carbohydrates, nutrient partitioning in lactating sheep, physiological mechanisms of insulin resistance and basis of fetal programming.
The experimental hypothesis: early exposure to dietary starch or fiber might induce permanent changes of glucose metabolism increasing lactation persistency of first lactating sheep.
The second Chapter described the experimental design.
The third Chapter presented the lactation performances of primiparous sheep fed different carbohydrates (starch and fiber) in mid lactation. Dietary treatments did not significantly affect sheep performance.
The fourth Chapter described effects of starch and fiber supplied during: 1) uterine life, 2) growing and 3) mid lactation on sheep lactation performances. Results showed that sheep exposed to starch early in life, fed fiber diets in mid lactation, had higher lactation persistency. This effect was statistically significant only for a small group of sheep in homogenous physiological status.
The fifth Chapter showed results of glucose and insulin tolerance tests performed in pregnancy and lactation. Observed patterns indicated that early in life exposure to starch might induce higher insulin resistance whereas exposure to fiber might induce higher insulin sensitivity. Finally, general conclusions close the dissertation.

Item Type:Doctoral Thesis
ID Code:11894
Contributors:Cannas, Antonello and Atzori, Alberto Stanislao
Publisher:Universita' degli studi di Sassari
Uncontrolled Keywords:Starch, fiber, uterine life, postnatal life, lactation
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/18 Nutrizione e alimentazione animale
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Agraria
Cicli, scuole e corsi:Ciclo 30 > Scienze agrarie > Scienze e tecnologie zootecniche
Deposited On:07 Jun 2018 11:13

I documenti depositati in UnissResearch sono protetti dalle leggi che regolano il diritto d'autore

Repository Staff Only: item control page