Copepod feeding strategies in the epipelagic to bathypelagic zone of Prydz Bay, Antarctica: an assessment through fatty acids and stable isotopes

Polar Biology ◽  
2018 ◽  
Vol 41 (7) ◽  
pp. 1307-1317
Author(s):  
Guang Yang ◽  
Chaolun Li ◽  
Yanqing Wang ◽  
Quancai Peng
Keyword(s):  
Fatty Acids ◽  
Stable Isotopes ◽  
Prydz Bay ◽  
Feeding Strategies ◽  
Bathypelagic Zone

scholarly journals Performance and Fatty Acid Composition of Adipose Tissue, Breast and Thigh in Broilers Fed Flaxseed: A Review

2013 ◽  
Vol 1 (2) ◽  
pp. 103-114 ◽  
Author(s):  
F Hernandez
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Fold Change ◽  
Poultry Meat ◽  
Feeding Strategies ◽  
Change Analysis ◽  
Broiler Performance ◽  
Total Fatty Acids ◽  
Main Fatty Acid ◽  
Fold Change Analysis

Interest on the enrichment of poultry meat with n-3 fatty acids has increased given its important role in human health. Flaxseed is the main sources of n-3 fatty acids, and contains between 45 to 71% of total fatty acids of the oil as α-linolenic acid. This paper reviews the plausibility of n-3 enrichment. Its focus is on the processing of flaxseed and begins by summarizing the benefits of supplementation on broiler performance. The literature on altering the FA deposition in different tissues is then reviewed, and the factors that affect the incorporation of n-3 PUFA into edible tissues of poultry are investigated. Flaxseed supplementation caused a reduction in the abdominal fat pad, and the main fatty acid deposited in the tissue is LNA. The use of fold-change analysis allowed interpreting and determining the variation of results within experiments that do not report data in similar units of measure. The fold change analysis identified three categories of desaturation response to feeding flaxseed to broilers, resulting in different values for EPA and DHA in both breast and thigh tissues: high, medium and low fold-changes. The use of flaxseed oil, whole or ground flaxseed 14 to 21 day before slaughter is recommended to poultry producers as feeding strategies to optimize n-3 enrichment, without compromising animal performance. Enriched DHA deposition could be accomplished feeding whole flaxseed.

scholarly journals Goats’ Feeding Supplementation with Acacia farnesiana Pods and Their Relationship with Milk Composition: Fatty Acids, Polyphenols, and Antioxidant Activity

Animals ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 515 ◽  
Author(s):  
Delgadillo-Puga ◽  
Cuchillo-Hilario ◽  
León-Ortiz ◽  
Ramírez-Rodríguez ◽  
Cabiddu ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Antioxidant Activity ◽  
Bioactive Compounds ◽  
Feeding Strategies ◽  
Dairy Goats ◽  
Antioxidant Power ◽  
Acacia Farnesiana ◽  
Goat’S Milk ◽  
Conventional Diet ◽  
Goat's Milk

Background: Research efforts have focused on the evaluation of the bioactive quality of animal products (milk, cheese, meat, and other by-products) contrasting various feeding strategies coming from different ecological zones. The study aimed to describe the fatty acids (FA), polyphenols (P), bioactive compounds (BC), and antioxidant activity (AA) of goat’s milk. Methods: Dairy goats were fed with five systems: (1) Grazing; (2) conventional diet (CD); (3) CD + 10% of Acacia farnesiana (AF) pods; (4) CD + 20% AF; and (5) CD + 30% AF. The fatty acid profile, health promoting and thrombogenic indexes were calculated. Milk extracts were evaluated by HPLC to determent phenolic compounds (gallic, caffeic, chlorogenic, and ferulic acids, catechin, epicatechin, and quercetin). Antioxidant activity of goat’s milk extract was evaluated using 2,2-diphenyl-1-picrylhydrazyl radical (DPPH•), oxygen radical absorbance capacity (ORAC), and the ferric reducing antioxidant power (FRAP) assays. Results: Conventional diet showed the highest content of polyunsaturated fatty acids while grazing showed the best n-6:n-3 and the linoleic:alpha linolenic acid ratio. Similarly, grazing and AF boosted the polyphenol content. Conclusions: Acacia farnesiana inclusion in the goats’ diets increased the presence of bioactive compounds and the antioxidant activity while diminishing the cholesterol content of goat’s milk.

Colostrum and milk fatty acids of dairy cows as influenced by extruded linseed supplementation during the transition period

2009 ◽  
Vol 89 (3) ◽  
pp. 383-392 ◽  
Author(s):  
D E Santschi ◽  
H -R Wettstein ◽  
F Leiber ◽  
A.-K. M Witschi ◽  
M Kreuzer
Keyword(s):  
Fatty Acids ◽  
Dairy Cows ◽  
Transition Period ◽  
Fast Response ◽  
Metabolic Parameters ◽  
Feeding Strategies ◽  
Early Lactation ◽  
Omega 3 ◽  
Milk Fatty Acids ◽  
Carry Over

The effects of precalving fat sources on fatty acid (FA) profile of colostrum and milk and on metabolic parameters in early lactation were determined. Two fat supplements (target: 21% fat, DM basis) fed at 1.8 kg DM d-1 were compared: Control (C; containing fractionated palm oil rich in 16:0) and Linseed (L; containing extruded linseed, rich in 18:3n-3). Sixteen dry Holstein (n = 7) and Brown Swiss (n = 9) cows were assigned to four groups receiving the supplements from 5 wk pre- to 4 wk post-calving in different sequences: CC, CL, LC and LL. Treatments did not affect metabolic parameters, milk yield or composition. Linseed supplementation increased proportions of 18:0, 18:1, 18:2 and 18:3 in colostrum and milk (except 18:1 for colostrum). The highest n-3 FA proportion was observed in milk of LL cows. For most 16 and 18 FA, a fast response occurred within the first week of lactation for cows that switched treatments over calving. Carry-over to milk of 18:3 and its biohydrogenation products from linseed fed precalving was low. Pre-calving feeding strategies to favour incorporation of these FA into early lactation milk were not successful, but the reasons for this failure remain unclear.Key words: Linseed, omega-3 fatty acids, transition period, milk, colostrum, dairy cows

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