scholarly journals Short communication: Relationships between the daily intake of unsaturated plant lipids and the contents of major milk fatty acids in dairy goats

2015 ◽  
Vol 13 (2) ◽  
pp. e06SC03 ◽  
Author(s):  
Andrés L. Martínez Marín ◽  
Nieves Núñez Sánchez ◽  
Ana I. Garzón Sigler ◽  
Francisco Peña Blanco ◽  
Miguel Angel De la Fuente
Keyword(s):  
Fatty Acids ◽  
Milk Fat ◽  
Short Communication ◽  
Daily Intake ◽  
Dairy Goats ◽  
Milk Fatty Acids ◽  
Plant Lipid ◽  
Plant Lipids ◽  
Negative Effect ◽  
Meta Regression

<p>A meta-regression of the effects of the amount of plant lipids consumed by dairy goats on the contents of some milk fat fatty acids (FA) was carried out. Fourteen peer-reviewed published papers reporting 17 experiments were used in the study. Those experiments compared control diets without added fat with diets that included plant lipids rich in unsaturated FA, summing up to 64 treatments. The results showed that increasing daily intake of plant lipids linearly reduced the contents of all medium chain saturated FA in milk fat. Moreover, it was observed that the longer the chain of the milk saturated FA, the greater the negative effect of the plant lipid intake on their contents. On the other hand, the contents of stearic acid and the sum of oleic, linoleic and α-linolenic acids in milk fat linearly increased as daily plant lipid intake rose. The results obtained corroborate previous reports on the effects of feeding dairy goats with increasing amounts of unsaturated plant lipids on milk FA profile.</p>

Associations between major fatty acids in plant oils fed to dairy goats and C18 isomers in milk fat

2015 ◽  
Vol 82 (2) ◽  
pp. 152-160 ◽  
Author(s):  
Andrés L Martínez Marín ◽  
Pilar Gómez-Cortés ◽  
Nieves Núñez Sánchez ◽  
Manuela Juárez ◽  
Ana I Garzón Sigler ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Factor Analysis ◽  
Linoleic Acid ◽  
Milk Fat ◽  
Principal Factor ◽  
Plant Oils ◽  
Dairy Goats ◽  
Plant Lipids ◽  
Principal Factors ◽  
Fat Composition

Relationships between fatty acids (FAs) in plant oils included in goat diets and milk fat C18 isomers were determined by Principal Factor Analysis (PFA). The three first principal factors (PF1, PF2 and PF3) accounted for 64·5% of the total variation in milk FAs contents. Fatty acids with a double bond at carbons 13, 14, 15 or 16 had high (>0·6) and positive loadings for PF1, trans-4 to trans-8 C18:1 for PF2, whereas trans-10 C18:1, trans-11 C18:1 and cis-9 trans-11 C18:2 showed high and positive loadings for PF3. Pearson's correlations supported that PF1, PF2 and PF3 were related to α-linolenic, oleic and linoleic acid intakes, respectively. Our results show that the quantitatively main FAs in plant lipids supplemented to dairy ruminants are often the main cause of the observed changes in milk C18 isomer contents. However, sometimes the observed changes are caused, or at least are influenced, by other FAs present in lower quantities in the plant lipids. Thus, using mixtures of plant oils with differently unsaturated main FAs could be a way of tailoring milk fat composition to a pre-designed pattern.

scholarly journals Short communication: Feeding linseed oil to dairy goats with competent reticular groove reflex greatly increases n-3 fatty acids in milk fat

2013 ◽  
Vol 96 (12) ◽  
pp. 7532-7537 ◽  
Author(s):  
A.L. Martínez Marín ◽  
P. Gómez-Cortés ◽  
D. Carrión Pardo ◽  
N. Núñez Sánchez ◽  
G. Gómez Castro ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Milk Fat ◽  
Short Communication ◽  
Linseed Oil ◽  
Dairy Goats

Milk fatty acids profile and arterial blood milk fat precursors concentration of dairy goats fed increasing doses of soybean oil

2013 ◽  
Vol 114 (1) ◽  
pp. 152-160 ◽  
Author(s):  
O.C. Almeida ◽  
A.V. Pires ◽  
I. Susin ◽  
R.S. Gentil ◽  
C.Q. Mendes ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Soybean Oil ◽  
Milk Fat ◽  
Dairy Goats ◽  
Milk Fatty Acids ◽  
Fatty Acids Profile ◽  
Arterial Blood

scholarly journals Influence of Feeding Linseed on SCD Activity in Grazing Goat Mammary Glands

Animals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 786 ◽  
Author(s):  
Raffaella Tudisco ◽  
Biagina Chiofalo ◽  
Vittorio Lo Presti ◽  
Valeria Maria Morittu ◽  
Giuseppe Moniello ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Treatment Group ◽  
Milk Fat ◽  
Saturated Fatty Acids ◽  
Mammary Glands ◽  
Control Group ◽  
Dairy Goats ◽  
Milk Fatty Acids ◽  
Homogeneous Groups ◽  
Stearoyl Coa Desaturase

The effects of linseed feeding on the stearoyl-CoA desaturase (SCD) activity were evaluated on grazing dairy goats divided into two homogeneous groups (C, control, and L, treated) fed the same amount of concentrate which, for group L was supplemented with linseed. Milk yield was unaffected by the treatment. Group L showed significantly higher milk fat (4.10% vs 2.94%, p < 0.01) than group S. Within milk fatty acids, group C showed significantly higher levels of saturated fatty acids and lower values of mono-unsaturated and polyunsaturated fatty acids. In group L, total CLAs were higher than in group S (0.646% vs 0.311%; p < 0.01) mainly because of the differences in CLA cis9 trans 11 (0.623% vs 0.304%; p < 0.01). In treated animals, SCD activity, measured as cis9 C14:1/C14:0, was lower than in the control group, mainly in July and August.

scholarly journals Milk Fatty Acid Profiles in Different Animal Species: Focus on the Potential Effect of Selected PUFAs on Metabolism and Brain Functions

Nutrients ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 1111
Author(s):  
Maria P. Mollica ◽  
Giovanna Trinchese ◽  
Fabiano Cimmino ◽  
Eduardo Penna ◽  
Gina Cavaliere ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Human Health ◽  
Milk Fat ◽  
Animal Species ◽  
Essential Fatty Acids ◽  
In Vivo Studies ◽  
Omega 3 ◽  
Milk Fatty Acids ◽  
Brain Functions ◽  
The Impact

Milk contains several important nutrients that are beneficial for human health. This review considers the nutritional qualities of essential fatty acids (FAs), especially omega-3 (ω-3) and omega-6 (ω-6) polyunsaturated fatty acids (PUFAs) present in milk from ruminant and non-ruminant species. In particular, the impact of milk fatty acids on metabolism is discussed, including its effects on the central nervous system. In addition, we presented data indicating how animal feeding—the main way to modify milk fat composition—may have a potential impact on human health, and how rearing and feeding systems strongly affect milk quality within the same animal species. Finally, we have presented the results of in vivo studies aimed at supporting the beneficial effects of milk FA intake in animal models, and the factors limiting their transferability to humans were discussed.

scholarly journals Short communication: The effect of linseed oil and DGAT1 K232A polymorphism on the methane emission prediction potential of milk fatty acids

2018 ◽  
Vol 101 (6) ◽  
pp. 5599-5604 ◽  
Author(s):  
S. van Gastelen ◽  
E.C. Antunes-Fernandes ◽  
K.A. Hettinga ◽  
J. Dijkstra
Keyword(s):  
Fatty Acids ◽  
Methane Emission ◽  
Short Communication ◽  
Linseed Oil ◽  
Milk Fatty Acids

scholarly journals Effects of dietary energy levels using calcium salts of fatty acids on nutritive value of diets and milk quality in peripartum dairy goats

2014 ◽  
Vol 38 (3) ◽  
pp. 286-294 ◽  
Author(s):  
Rodrigo de Souza ◽  
Claudete Regina Alcalde ◽  
Bruna Hygino ◽  
Bruna Susan de Labio Molina ◽  
Geraldo Tadeu dos Santos ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Body Weight ◽  
Energy Level ◽  
Milk Fat ◽  
Dry Matter ◽  
Nutritive Value ◽  
Energy Levels ◽  
Milk Quality ◽  
Dietary Energy ◽  
Dairy Goats

Peripartum is a critical period for dairy goats, as dry matter intake (DMI) is not enough to supply the energy requirement for foetal growth and subsequent lactation. The objective of this study was to evaluate the use of calcium salts of fatty acids (CSFA) to increase dietary energy level of peripartum dairy goats and its effects on nutritive value of diets and milk quality. Twenty multiparous Saanen goats (body weight 63.5±10.3 kg) were distributed in a completely randomised design in four treatments at the following dietary energy levels: 2.6 Mcal of metabolisable energy per kg of dry matter (Mcal ME/kg DM) - control diet; and 2.7, 2.8, and 2.9 Mcal/kg DM - with added CSFA. Goats were housed in individual stalls and evaluated in the peripartum period, by measuring body weight (BW), DMI, dry matter and nutrient digestibility of diets, blood composition, and milk quality and yield. Increasing dietary energy level to 2.9 Mcal ME/kg DM had no effect on BW and did not limit DMI. CSFA supplementation increased intake of total digestible nutrients and did not affect fibre digestion. Blood triglycerides and cholesterol concentration increased with CSFA addition. The treatments had no effect on milk yield and composition; however, CSFA supplementation changed the fatty acid concentration of milk fat, increasing levels of polyunsaturated and essential fatty acids. In conclusion, peripartum dairy goats supplemented with CSFA to increase dietary energy level up to 2.9 Mcal ME/kg DM had a greater supply of total digestible nutrients and showed altered fatty acid concentration of milk fat.

GENOME-WIDE ASSOCIATION STUDY FOR COWS’ MILK FATTY ACIDS DERIVED BY INFRARED SPECTRA

2021 ◽  
Vol 1 (19) ◽  
pp. 352-354
Author(s):  
E.A. Gladyr ◽  
L.P. Ignatieva ◽  
I.A. Lashneva ◽  
A.A. Kositsin ◽  
O.A. Artemieva ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Milk Fat ◽  
Genome Wide Association Study ◽  
Cow Milk ◽  
Fat Percentage ◽  
Milk Fatty Acids ◽  
Linear Type ◽  
Black And White ◽  
Genome Wide ◽  
First Results

The first results of the genome-wide associations analysis for fatty acids composition in cow milk by Russian Holsteinized Black-and-White and Holstein breeds were obtained. Genomic regions (QTL) associated with milk fat percentage, fatty acids synthesis, functional parameters of linear type for udder and leg traits, fertility features have been detected.

scholarly journals Physical-chemical characteristics and fatty acids composition in dairy goat milk in response to roughage diet

2004 ◽  
Vol 47 (6) ◽  
pp. 903-909 ◽  
Author(s):  
Marcelo Shizuo Torii ◽  
Júlio César Damasceno ◽  
Luciano da Rocha Ribeiro ◽  
Eduardo Shiguero Sakaguti ◽  
Geraldo Tadeu dos Santos ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Treatment Effects ◽  
Dairy Goat ◽  
Chemical Characteristics ◽  
Fatty Acids Composition ◽  
Dairy Goats ◽  
Milk Fatty Acids ◽  
Physical Chemical ◽  
Lactating Goats ◽  
Chain Fatty Acids

The objective of the present work was to evaluate the physical-chemical characteristics (density, pH, acidity, fat, protein, lactose and total of solids contents) and milk fatty acids composition (C: 4 to C: 20) in response to roughage sources (alfalfa hay T1; oat hay T2 and maize silage T3). Nine Saanen lactating goats were used, in a triple Youden square design (3 animals x 2 periods). There was no treatment effects in the physical-chemical variables in the univariate analyses; by multivariate analyses three distinct patterns of fatty acids could be defined: milk with greater quantity of short chain fatty acids and acids C17:1omega7 e C18:2omega6 (T1); milk with equivalent amounts of short, medium and long chain fatty acids (T2); and milk with greater amounts of acids C16:1omega7, C17:0, C18:1omega9 and C20:0 (T3). These results indicated that the roughage sources used in the diet of lactating dairy goats affected the fatty acids composition, without altering the milk physical-chemical characteristics. The acids more sensitive to the treatment effects were: C10:0, C12:0, C14:0, C16:0, C16:1omega7, C18:0 and C18:3omega6.

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