scholarly journals Effect of Dams and Suckling Lamb Feeding Systems on the Fatty Acid Composition of Suckling Lamb Meat

Animals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 3142
Author(s):  
Gianni Battacone ◽  
Mondina Francesca Lunesu ◽  
Salvatore Pier Giacomo Rassu ◽  
Giuseppe Pulina ◽  
Anna Nudda
Keyword(s):  
Fatty Acid ◽  
Maternal Diet ◽  
Mediterranean Area ◽  
Good Strategy ◽  
Maternal Milk ◽  
Sheep Breeding ◽  
Fa Composition ◽  
Lamb Meat ◽  
Long Chain ◽  
Feeding Systems

The effects of the dams and suckling lamb feeding systems on the fatty acid (FA) profile of lamb meat are reviewed in this article. The suckling lamb can be considered a functional monogastric, and therefore, its meat FA composition is strongly influenced by the FA composition of maternal milk. The major source of variation for ewe milk FA composition is represented by pasture amount and type. In the traditional sheep breeding system of the Mediterranean area, the main lambing period occurs in late autumn–early winter, and ewes are able to exploit the seasonal availability of the natural pastures at their best. Therefore, lambs start suckling when maternal milk concentrations of vaccenic, rumenic, and n-3 long-chain polyunsaturated FA in maternal milk are the highest. When maternal diet is mainly based on hay and concentrates, the use of vegetable oils can be considered a good strategy to improve the meat FA profile of suckling lambs.

Effects of full-time v. part-time grazing on seasonal changes in milk coagulation properties and fatty acid composition

2021 ◽  
pp. 1-6
Author(s):  
Franziska S. Akert ◽  
Michael Kreuzer ◽  
Carmen Kunz ◽  
Beat Reidy ◽  
Joel Berard
Keyword(s):  
Fatty Acid ◽  
Seasonal Variations ◽  
Milk Fat ◽  
Seasonal Effects ◽  
Full Time ◽  
Fa Composition ◽  
Part Time ◽  
Milk Coagulation ◽  
The Impact ◽  
Feeding Systems

Abstract For this research communication our objective was to investigate to what extent milk coagulation properties and milk fatty acid (FA) composition were affected by different feeding systems, season and their interaction. Eighteen cows in total were subjected to one of three different feeding system treatments: full-time grazing or part-time grazing combined with indoor feeding of fresh grass with low or high concentrate supplementation. Milk was sampled in spring, summer and autumn. Milk coagulation time was 15.0, 19.0 and 17.7 min, coagulation dynamics 1.67, 3.41 and 1.79 min, and curd firmness 52.7, 32.4 and 47.0 mm in spring, summer and autumn, respectively. Thus, milk coagulation properties of the milk were lower during summer. There were strong seasonal effects on milk FA proportions, but there were not always changes with progressing season, or changes were different with respect to the impact of the feeding systems (system × season interaction). The milk fat was favourably rich in oleic acid, conjugated linoleic acid and α-linolenic acid and had a low n-6/n-3 fatty acid ratio in all systems. Factors like seasonal variations in grass composition and the energy balance of the cows were considered relevant for the milk FA composition. Overall, seasonal variations in milk quality were less pronounced with part-time grazing with fresh grass indoors as compared to full-time grazing without concentrate.

scholarly journals Breast milk fatty acid composition and fatty acid intake of lactating mothers in South Korea

2017 ◽  
Vol 117 (4) ◽  
pp. 556-561 ◽  
Author(s):  
Hyesook Kim ◽  
Sujeong Kang ◽  
Byung-Moon Jung ◽  
Hyunju Yi ◽  
Ji A. Jung ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Breast Milk ◽  
Human Milk ◽  
Maternal Diet ◽  
Fat Content ◽  
Dietary Intakes ◽  
Food Record ◽  
Supplement Use ◽  
Milk Samples ◽  
Fa Composition

AbstractThe aim of this study was to determine the fatty acid (FA) composition of breast milk, and its association with mothers’ FA intake. Milk samples were obtained from 238 healthy lactating women who volunteered to participate in the Human Milk Micronutrients Analysis Research. Dietary intake during lactation was assessed using a 3-d food record, and fat content and FA composition of the breast milk samples were analysed by IR spectrometry using MilkoScan FT2 and GC flame ionisation detector, respectively. The fat content was 3·31 (sd 1·41) g/100 ml breast milk. The concentrations of arachidonic acid (20 : 4 n-6), EPA (20 : 5 n-3) and DHA (22 : 6 n-3) in breast milk were 0·48 (sd 0·13), 0·15 (sd 0·12) and 0·67 (sd 0·47) % of total FA, respectively. Fat content and FA composition of breast milk were associated with maternal age, BMI, supplement use and infant age. Dietary intakes of EPA, DHA, n-3 FA, n-6 FA, SFA and PUFA were positively correlated with the corresponding FA in the milk samples. FA levels in breast milk and maternal diet are highly correlated. Further studies are warranted to explore factors that may be associated with changes in FA composition in human milk.

Effect of breed and nutritional management on fatty acid composition of lambs of dairy Greek breeds of sheep

2001 ◽  
Vol 2001 ◽  
pp. 77-77 ◽  
Author(s):  
G. Arsenos ◽  
D. Zygoyiannis ◽  
D. Kufidis ◽  
N. Katsaounis ◽  
C. Stamataris
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Meat Quality ◽  
Acid Composition ◽  
Live Weight ◽  
Nutritional Management ◽  
Substantial Loss ◽  
Fa Composition ◽  
Lamb Meat ◽  
Consumer Choices

Carcass fat of meat producing animals has long been identified as one of the most important characteristics of overall meat quality. In this respect, consumer choices of particular food reflect their awareness of the link between health and consumption of fats particularly saturated. Lamb meat is considered to be excessively fat and this results in substantial loss in its marketability. This study was carried out to assess the effect of breed, sex, post-weaning nutrition, live weight at slaughter and their interactions on the fatty acid (FA) composition in carcass fat of lambs of three indigenous dairy Greek breeds of sheep.

scholarly journals Discarded fish on the Spanish Mediterranean coast: influence of season on fatty acids profiles

2021 ◽  
Vol 22 (2) ◽  
pp. 232
Author(s):  
MARÍA DOLORES SUÁREZ ◽  
MARÍA ISABEL SÁEZ ◽  
MIGUEL ÁNGEL RINCÓN-CERVERA ◽  
LUIS HIDALGO ◽  
JOSE LUIS GUIL-GUERRERO
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Polyunsaturated Fatty Acids ◽  
Eicosapentaenoic Acid ◽  
Mediterranean Coast ◽  
Total N ◽  
Fa Composition ◽  
Potential Use ◽  
Long Chain

This work focused on determining the fatty acid (FA) composition of commonly discarded fish on the Spanish Mediterranean coast in winter and summer to assess their potential use as raw sources of very long-chain polyunsaturated fatty acids (VLCPUFAs). Total n-3 VLCPUFA content significantly varies depending on capture season, and values were higher in winter for Pomadasys incisus (1.36 g/100 g), Chelidonichthys lucerna (1.67 g/100 g) and Trachinus draco (2.04 g/100 g), while Pagellus acarne had larger n-3 PUFA amounts in summer (3.89 g/100 g). Generally for most species, monounsaturated FA, eicosapentaenoic acid (20:5n-3) and total FA had higher values in summer, while both the n-3 VLCPUFA fraction and DHA content were higher in winter. Knowledge of these changes allows the processes for their proper use as valuable PUFA sources to be adjusted. The discarded fish herein studied could be generally considered to be raw n-3 VLCPUFAs sources.

scholarly journals Rapid and selective manipulation of milk fatty acid composition in mice through the maternal diet during lactation

2015 ◽  
Vol 4 ◽  
Author(s):  
Annemarie Oosting ◽  
Henkjan J. Verkade ◽  
Diane Kegler ◽  
Bert J. M. van de Heijning ◽  
Eline M. van der Beek
Keyword(s):  
Fatty Acid ◽  
Maternal Diet ◽  
Dietary Exposure ◽  
Postnatal Period ◽  
Metabolic Health ◽  
Postnatal Life ◽  
Lactation Period ◽  
Chain Pufa ◽  
Fa Composition ◽  
Feeding Techniques

AbstractDietary fatty acid (FA) composition in early postnatal life can modulate growth and development and later metabolic health. Investigating programming effects of early dietary FA manipulations in rodents may be stressful and complicated due to the need of artificial feeding techniques. It is largely unknown to what extent breast milk (BM) FA composition can be directly manipulated by the diet. We exposed dams to different dietary FA compositions from postnatal day (PN) 2 until PN28. Dams with litters were randomly assigned to control (CTRL), high-medium-chain FA (MCFA), low-linoleic acid (LowLA), high-n-3 long-chain PUFA (n-3LCP) or high-n-3LCP and MCFA (n-3LCP/MCFA) diets, and diets were continued after weaning until PN28. FA compositions were determined in feeds, milk and in erythrocytes. BM MCFA content was independent from dietary MCFA intake. In contrast, the LowLA diet reduced BM LA content by about 50 % compared with the CTRL diet at PN7. BM of dams fed the n-3LCP or n-3LCP/MCFA diet contained about 6-fold more n-3 LCP than BM of the dams fed the CTRL diet at PN7. These changes in milk FA composition established after 5 d of dietary exposure did not further change over the lactation period. At PN28, the erythrocyte FA composition of the male pups correlated with analysed milk FA profiles. In conclusion, manipulation of the diet of lactating mice can strongly and rapidly affect BM FA composition, in particular of n-6 LA and n-3 LCP. Our present findings will facilitate mechanistic studies on the programming of adult metabolic health by dietary FA in the early postnatal period via direct and selective manipulation of the maternal diet.

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