Effectiveness of extruded rapeseed associated with an alfalfa protein concentrate in enhancing the bovine milk fatty acid composition

Van, Quynh Chau Dang; Bejarano, Liliana; Mignolet, Éric; Coulmier, D.; Froidmont, Éric; Larondelle, Yvan; Focant, Michel

doi:10.3168/jds.2011-4204

Cited by 12 publications

(11 citation statements)

References 24 publications

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“…Extrusion may have played a role in the formation of biohydrogenation intermediates responsible for the decrease in MFC. We hypothesized, in the introduction, that extrusion may protect UFA from ruminal biohydrogenation (Kennelly, 1996;Doreau et al, 2009); the linear increase of milk in ALA content confirmed that hypothesis, even if the efficiency of extrusion to protect fat in comparison with other processes is inconsistent in the literature (Dang Van et al, 2011;Troegeler-Meynadier et al, 2014). A decrease in ALA biohydrogenation was generally observed, as well as an increase in biohydrogenation intermediates (Dang Van et al, 2011;Troegeler-Meynadier et al, 2014).…”

mentioning

confidence: 68%

“…Indeed, Kennelly (1996) stated that heat treatment denatures the protein matrix surrounding the fat droplets, thus reducing the UFA availability for rumen microorganisms. However, the effects of extrusion on ruminal degradability of oilseeds are inconsistent in the literature (Dang Van et al, 2011;Troegeler-Meynadier et al, 2014). The analysis of the protective effect of extrusion on UFA obviously depends on the oilseed form taken for comparison (i.e., free oil, raw, technologically or chemically treated), and on the method of evaluation of UFA biohydrogenation (i.e., duodenal flows or milk FA profiles; Doreau et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Effects of feeding extruded linseed on production performance and milk fatty acid profile in dairy cows: A meta-analysis

Meignan

Lechartier

Chesneau³

et al. 2017

Journal of Dairy Science

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The objectives of this study were to quantify the effects on production performance and milk fatty acid (FA) profile of feeding dairy cows extruded linseed (EL), a feed rich in α-linolenic acid, and to assess the variability of the responses related to the dose of EL and the basal diet composition. This meta-analysis was carried out using only data from trials including a control diet without fat supplementation. The dependent variables were defined by the mean differences between values from EL-supplemented groups and values from control groups. The data were processed by regression testing the dose effect, multivariable regression testing the effect of each potential interfering factor associated with the dose effect, and then stepwise regression with backward elimination procedure with all potential interfering factors retained in previous steps. This entire strategy was also applied to a restricted data set, including only trials conducted inside a practical range of fat feeding (only supplemented diets with <60 g of fat/kg of dry matter and supplemented with <600 g of fat from EL). The whole data set consisted of 17 publications, representing 21 control diets and 29 EL-supplemented diets. The daily intake of fat from EL supplementation ranged from 87 to 1,194 g/cow per day. The dry matter intake was numerically reduced in high-fat diets. Extruded linseed supplementation increased milk yield (0.72 kg/d in the restricted data set) and decreased milk protein content by a dilutive effect (-0.58 g/kg in the restricted data set). No effect of dose or diet was identified on dry matter intake, milk yield, or milk protein content. Milk fat content decreased when EL was supplemented to diets with high proportion of corn silage in the forage (-2.8 g/kg between low and high corn silage-based diets in the restricted data set) but did not decrease when the diet contained alfalfa hay. Milk trans-10 18:1 proportion increased when EL was supplemented to high corn silage-based diets. A shift in ruminal biohydrogenation pathways, from trans-11 18:1 to trans-10 18:1, probably occurred when supplementing EL with high corn silage-based diets related to a change in the activity or composition of the microbial equilibrium in the rumen. The sum of pairs 4:0 to 14:0 (FA synthesized de novo by the udder), palmitic acid, and the sum of saturated FA decreased linearly, whereas oleic acid, vaccenic acid, rumenic acid, α-linolenic acid, and the sums of mono- and polyunsaturated FA increased linearly when the daily intake of fat from EL was increased. In experimental conditions, EL supplementation increased linearly proportions of potentially human health-beneficial FA in milk (i.e., oleic acid, vaccenic acid, rumenic acid, α-linolenic acid, total polyunsaturated FA), but should be used cautiously in corn silage-based diets.

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confidence: 68%

Section: Introductionmentioning

confidence: 99%

Effects of feeding extruded linseed on production performance and milk fatty acid profile in dairy cows: A meta-analysis

Meignan

Lechartier

Chesneau³

et al. 2017

Journal of Dairy Science

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“…Recent studies have underlined its effectiveness on sheep (21,29), turkeys (19), laying hens (12), broiler chickens (8), and finally, pigs (14,15,22), where low alfalfa protein concentrate (APC) supplementation in the 2% -3% range caused higher weight gains and better feed conversion. Some research reports emphasise the effect of this preparation on the quality of animal product such as milk (5) and eggs (12), and on blood metabolic profile in humans (23,27). According to Davys et al (7), this supplement may also be used as a food additive for humans.…”

Section: Introductionmentioning

confidence: 99%

Influence of alfalfa protein concentrate dietary supplementation on blood parameters of growing-finishing pigs

Pietrzak

Grela

2015

Bulletin of the Veterinary Institute in Pulawy

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The aim of the study was to analyse the effect of the feed additive alfalfa protein concentrate (APC), on pig health. The trial involved 40 crossbred gilts and 40 crossbred castrates (Polish Landrace × Polish Large White) × Duroc of 29.0 ± 0.5 kg initial body weight. Allocation of experimental animals was into four treatment groups: the control group (C) was fed standard mixtures, without APC addition; group E-15 was fed a basal diet supplemented with 1.5% APC; and groups E-30 and E-30P were fed diets with 3.0% APC inclusion. There were two feeding systems. In the first system, animals of groups C, E-15, and E-30 were fed continuously with suitable mixtures. The second feeding system was used in group E-30P where animals received the experimental or control mixture alternating at two-week intervals. The addition of APC supplement to diets significantly increased (P ≤ 0.05) red blood cell indices, i.e. haematocrit (Ht), red blood cell count (RBC), and haemoglobin concentration (Hb) in growing and finishing periods. The analysis of enzyme activity demonstrated a markedly higher activity of aspartate aminotransferase (AST), alanine aminotransferase (ALT), and especially alkaline phosphatase (ALP) in the blood plasma of pigs fed APC supplement. This increase may indicate a negative impact of APC on the animal's liver. A positive effect of dietary APC on blood lipid parameters was associated with a decreased level of total cholesterol and reduced low-density lipoprotein fraction. Analysis of the haematological and biochemical blood indices demonstrated that APC additive may affect animal health.

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“…Hops used in in vitro experiments reduced the degradability of dry matter and crude protein in the rumen without affecting the digestibility of DM and CP [ 154 ]. The inclusion of hops at between 400 and 800 mg/L of culture fluid in in vitro rumen incubations reduced CH 4 production and the acetate/propionate ratio [ 155 , 156 ]. Hops thus appear to be another promising natural feed additive in reducing the production of CH 4 in the rumen [ 139 ].…”

Section: Alternative and Unconventional Feeds Used In Dairy Dietsmentioning

confidence: 99%

“…Hops thus appear to be another promising natural feed additive in reducing the production of CH 4 in the rumen [ 139 ]. When used in combination, hop pellets and oak extracts can complement each other to reduce rumen CH 4 production and NH 3 efflux in ruminants [ 156 ]. There is a lack of published information on the effect of hops on milk production and milk composition in cows.…”

Section: Alternative and Unconventional Feeds Used In Dairy Dietsmentioning

confidence: 99%

Alternative and Unconventional Feeds in Dairy Diets and Their Effect on Fatty Acid Profile and Health Properties of Milk Fat

Hadrová

Sedláková

Křížová

et al. 2021

Animals

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Milk fat is an important nutritional compound in the human diet. From the health point of view, some fatty acids (FAs), particularly long-chain PUFAs such as EPA and DHA, have been at the forefront of interest due to their antibacterial, antiviral, anti-inflammatory, and anti-tumor properties, which play a positive role in the prevention of cardiovascular diseases (CVD), as well as linoleic and γ-linolenic acids, which play an important role in CVD treatment as essential components of phospholipids in the mitochondria of cell membranes. Thus, the modification of the FA profile—especially an increase in the concentration of polyunsaturated FAs and n-3 FAs in bovine milk fat—is desirable. The most effective way to achieve this goal is via dietary manipulations. The effects of various strategies in dairy nutrition have been thoroughly investigated; however, there are some alternative or unconventional feedstuffs that are often used for purposes other than basic feeding or modifying the fatty acid profiles of milk, such as tanniferous plants, herbs and spices, and algae. The use of these foods in dairy diets and their effects on milk fatty acid profile are reviewed in this article. The contents of selected individual FAs (atherogenic, rumenic, linoleic, α-linolenic, eicosapentaenoic, and docosahexaenoic acids) and their combinations; the contents of n3 and n6 FAs; n6/n3 ratios; and atherogenic, health-promoting and S/P indices were used as criteria for assessing the effect of these feeds on the health properties of milk fat.

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Effectiveness of extruded rapeseed associated with an alfalfa protein concentrate in enhancing the bovine milk fatty acid composition

Cited by 12 publications

References 24 publications

Effects of feeding extruded linseed on production performance and milk fatty acid profile in dairy cows: A meta-analysis

Effects of feeding extruded linseed on production performance and milk fatty acid profile in dairy cows: A meta-analysis

Influence of alfalfa protein concentrate dietary supplementation on blood parameters of growing-finishing pigs

Alternative and Unconventional Feeds in Dairy Diets and Their Effect on Fatty Acid Profile and Health Properties of Milk Fat

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