Caracterização do leite e do queijo de ovelhas da raça bergamácia suplementadas com óleo ou farelo de linhaça (Linum usitassimum L.)

• Autor(a) principal: Silva, Maria Fernanda Correia da [UNESP]
• Data de Publicação: 2014
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/111038
• topic: Acidos graxos Omega-3; Leite; Queijo - Avaliação sensorial; Ovino - Alimentação e rações; Ewes

The objective in this trial was to determine the effects of feed ing diets with linseed oil ( O L) or flaxseed meal (F M ) on milk production, its components and milk fatty acid profile, especia lly over the content of rume nic acid (CLA) and O mega 3 . Seventy ewes were distributed in three groups: Control (C) - no lipids, Lin seed (L) – with addition of 3% of OL (DM basis) and Flaxseed (F) – with addition of 15% of FM (DM basis). Ewe remained confined in collective pens and received diet containing 60% corn silage and 40% concentrate. They are mechanically milked once a day and had their productions controlled. Milk samples for analysis of fatty acid profiles were collected every 14 days from the fifth day of lactation and proximate composition from the first day of milking. The production and proximate composition of milk were not affected by treatments. The highest levels of CLA and α - linolenic fatty acid were observed in the milk of sheep that consumed flaxseed oil, like the lower levels of saturated fatty acids. The highest levels of Omega 3 (EPA and DHA) were obtained from t he milk of sheep that consumed flaxseed meal. The results of this study suggest that lipid supplementation with flaxseed to lactating ewes improves the nutritional quality of milk, especially with the use of flaxseed ...