Transfer Rates of Docosahexaenoic and Eicosapentaenoic Acids into Cow's Milk in Pasture Based and Feed‐Lot Management Systems

Gulati, S.K.; Thomson, Peter; Ha, Woel‐Kyu; Lee, Won‐Jae; Lee, Ji‐Hong; Choi, Jae‐Heung; Ko, Ki‐Han; Park, Sang‐Ik; Cox, Geoff; Scott, T. W.

doi:10.1002/ejlt.202100106

Cited by 3 publications

(1 citation statement)

References 32 publications

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“…The findings of this investigation suggest that supplementation of UFA and/or PUFA sources can improve fatty acid profile and reduce the negative effects of biohydrogenation in the rumen. Another study conducted by Gulati et al [30] also found that a transfer of 19-20% of EPA and DHA into milk is achievable from feed management, whether they are raised on pasture or fed with a diet high in inert fat supplements in the rumen. By adjusting the ratios of EPA and DHA within the fat supplement, it is feasible to generate milk that caters to diverse consumer preferences and meet the standards of a source of omega-3 fatty acids.…”

Section: Rumen Fluid Polyunsaturated Fatty Acids (Pufa) Concentrationmentioning

confidence: 94%

Protected fat-protein response in the diet to fatty acid profile of rumen fluid

Wulandari,

Noviandi,

Widyobroto

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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Fat supplementation in the ration has a negative impact on rumen microbes and the biohydrogenation of fats. Meanwhile, the effectiveness of post-rumen nutrients may be decreased if high-protein diet is excessively broken down in the rumen. The protection of both fat and protein may help address fat-related issues in the rumen and enhance protein absorption in the intestine. The goal of this study was to examine the fatty acid composition of rumen fluid made with a blend of fat, protein, and Agromix® mineral premix that had been formaldehyde-protected. Two treatments were compared using an independent sample T-test (R1/control = basal diet, and R2 = basal diet with 4.4% DM replacement of protected fat-protein). All treatments were subjected to a 48-hour incubation using Tilley and Terry’s in vitro technique. The results indicated that the levels of SFA in R2 treatment showed a significant decrease (p<0.05), while the concentrations of MUFA and PUFA in R2 exhibited a more significant increase (p<0.05) compared to those in R1. It can be concluded that protected fat substitution can reduce biohydrogenation of fat in the rumen, thereby helping elevate the levels of absorbable unsaturated fatty acid levels in the intestine.

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Section: Rumen Fluid Polyunsaturated Fatty Acids (Pufa) Concentrationmentioning

confidence: 94%

Protected fat-protein response in the diet to fatty acid profile of rumen fluid

Wulandari,

Noviandi,

Widyobroto

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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Variations in the milk lipidomic profile of lactating dairy cows fed the diets containing alfalfa hay versus alfalfa silage

Liu,

Chen,

Huang

et al. 2024

Animal Nutrition

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Fish Oil Supplementation as an Omega-3 Fatty Acid Source during Gestation: Effects on the Performance of Awassi Ewes and Their Offspring

Alshdaifat,

Serbester,

Obeidat

et al. 2023

Animals

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The primary aim of this research was to assess the impact of supplementing fish oil into the diet of pregnant Awassi ewes on various aspects of the dam’s productive performance, offspring birth weight, colostrum yield and quality, milk production and composition, postpartum offspring performance, and the composition of fatty acids in milk. In this study, two different fat sources, namely palm oil (PO) and fish oil (FO), were utilized, with both being included at a rate of 2.4% of dietary dry matter (DM) during the initial 65 days of gestation (early gestation stage), and then at 2.1% DM from day 65 of gestation until lambing (late gestation stage). The study subjects were Awassi ewes with a body weight (BW) averaging 57 ± 1.5 kg and an age of 3.5 ± 1.2 years. These ewes were randomly assigned to one of four dietary treatments: (i) a diet containing only palm oil from day 0 to day 150 of pregnancy (PO, n = 15); (ii) a diet containing palm oil from day 0 to day 65 of pregnancy, followed by a diet containing fish oil from day 66 to day 150 of pregnancy (POFO, n = 16); (iii) a diet containing fish oil from day 0 to day 65 of pregnancy, followed by a diet containing palm oil from day 66 to day 150 of pregnancy (FOPO, n = 16); (iv) a diet containing only fish oil from day 0 to day 150 of pregnancy (FO, n = 16). Within each treatment, ewes were housed in three replicates, with each replicate further divided into three subgroups. The first two subgroups each contained eight ewes, while the third subgroup contained nine ewes. In addition, each treatment contained 10 primiparous and 15 multiparous ewes. The results indicated that the POFO treatment led to significant increases (p < 0.05) in birth weight, gestation length, and colostrum IgG concentration. However, it also resulted in a decrease (p < 0.001) in colostrum production and a reduction (p < 0.001) in the percentage of milk fat and milk protein. Furthermore, the milk from the POFO treatment exhibited higher levels of polyunsaturated fatty acids (PUFAs) (p < 0.001) compared to the PO and FOPO treatments, while the milk saturated fatty acids (SFA) were lower (p < 0.001). In conclusion, the addition of fish oil at a rate of 2.1% DM during the late pregnancy period showed promise for enhancing birth weight, colostrum IgG concentration, and the PUFA content in the milk.

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Transfer Rates of Docosahexaenoic and Eicosapentaenoic Acids into Cow's Milk in Pasture Based and Feed‐Lot Management Systems

Cited by 3 publications

References 32 publications

Protected fat-protein response in the diet to fatty acid profile of rumen fluid

Protected fat-protein response in the diet to fatty acid profile of rumen fluid

Variations in the milk lipidomic profile of lactating dairy cows fed the diets containing alfalfa hay versus alfalfa silage

Fish Oil Supplementation as an Omega-3 Fatty Acid Source during Gestation: Effects on the Performance of Awassi Ewes and Their Offspring

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