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Use of by-products in dairy sheep nutrition

Buffa, Giovanna (2019) Use of by-products in dairy sheep nutrition. Doctoral Thesis.

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Abstract

This thesis aimed to evaluate the effects of the dietary inclusion of three by-products in sheep diets: Tomato pomace (TP) is the by-product derived from process of tomato juice, grape marc (GM) derived from winemaking and exhausted myrtle berries (EMB) derived from production of liqueur called Mirto rosso (red myrtle).
This study is divided in 4 main chapters.
Chapter 1 reports the literature on amounts, chemical composition and fatty acid profile of by-products from tomato, wine and myrtle industries. Their use in ruminant nutrition and the effects on milk yield and composition and the biological effects have been discussed. Furthermore, the bioactive compounds, as polyphenol, identified in these by-products have been reported.
In the others chapters of the thesis are reported: the study of the effects of use of small amounts of dried tomato pomace, grape pomace and exhausted myrtle berries on milk yield and composition, and blood biochemical parameters (Chapter 2); the additional information on nutrient and polyphenol composition of the by-products from tomato, wine and myrtle industries in order to supplement existing feedstuff tables (Chapter 2); the effects of tomato pomace, grape pomace and exhausted myrtle berries on oxidative status of animals and milk (Chapter 3); the effects of these by-products on milk fatty acid profile (Chapter 3); and, finally, the effects of by-products on rumen microbiome and fermentation parameters (Chapter 4).

Item Type:Doctoral Thesis
ID Code:11973
Contributors:Nudda, Anna
Publisher:Universita' degli studi di Sassari
Uncontrolled Keywords:Grape marc, tomato pomace, myrtle berries, milk yield, ruminal parameters
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/19 Zootecnica speciale
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Agraria
Cicli, scuole e corsi:Ciclo 31 > Scienze agrarie > Scienze e tecnologie zootecniche
Deposited On:19 Apr 2019 13:12

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