Aims of the study were to determine the effects of perinatal dietary supplementation of fish oil or stearic acid on plasma,colostrum and milk fatty acids (FA) profiles of dairy goats and plasma FA status of their kids. From the last week of gestation until 3 weeks after kidding 24 multiparous Alpine goats were divided into 3 groups: control diet (C) no lipid supplement; fish oil (FO) rich in EPA (10.4 %) and DHA (7.8 %); calcium stearate (ST) rich in saturated FA C16:0 (26 %) and C18:0 (69.4 %). FO and ST diets supplied 30 or 50 g/head/d of FA respectively before and after kidding. Goat blood samples were collected weekly from 130 d of gestation until 21 d of lactation.Colostrum was sampled within the first 24 h postpartum and milk samples were collected at 7 and 21d of lactation. Kids blood samples were collected at 0, 7 and 21 d. All samples were analysed by GC to determine FA composition. Statistical analysis on colostrum and milk FA profile was performed by GLM or MIXED repeated procedures of SAS v9.2. Plasma FA profile were evaluated by SPSS v17 using ANOVA and Student-Newman-Kelus post hoc test. Maternal mean plasma content of EPA (2.06%) and DHA (1.61%) was significantly higher in FO than C and ST. EPA and DHA were increased in colostrum (P≤ 0.05) and in milk (P ≤ 0.01) of FO vs ST and C groups. Average milk secretion of EPA and DHA during the first 3 weeks of lactation was 0.40 g/d and 0.31g/d respectively, with an apparent transfer efficiency of 7.69% (EPA) and 8% (DHA). Preliminary data on kids FA profile show an higher content of EPA and DHA at 0 d in FO kids. This tendency seems to persist at 7 and 21 d. In conclusion perinatal lipid supplementation produced valuable variations of colostrum, milk and plasma FA profile both in dams and kids, especially for EPA and DHA contents in FO group.
Effects of perinatal dietary lipid supplementation on fatty acid status of dairy goats and kids / M. Ferroni, D. Cattaneo, A. Agazzi, G. Invernizzi, F. Bellagamba, F. Caprino, V.M. Moretti, G. Savoini - In: Book of Abstracts of the 65th Annual Meeting of the European Federation of Animal ScienceWageningen : Wageningen Academic Publishers, 2014. - ISBN 9789086862481. - pp. 357-357 (( Intervento presentato al 65. convegno Annual Meeting of the European Federation of Animal Science tenutosi a Copenhagen nel 2014.
|Titolo:||Effects of perinatal dietary lipid supplementation on fatty acid status of dairy goats and kids|
FERRONI, MARIELLA (Primo)
CATTANEO, DONATA MARIA IOLANDA RENATA (Secondo)
MORETTI, VITTORIO MARIA (Penultimo)
SAVOINI, GIOVANNI (Ultimo)
|Parole Chiave:||perinatal lipid supplementation; fish oil; stearic acid; dairy goats; kids; plasma FA; colostrum FA; milk FA|
|Settore Scientifico Disciplinare:||Settore AGR/18 - Nutrizione e Alimentazione Animale|
|Data di pubblicazione:||2014|
|Enti collegati al convegno:||European Federation of Animal Science (EAAP)|
|Tipologia:||Book Part (author)|
|Appare nelle tipologie:||03 - Contributo in volume|