Effects of soybean oil supplement to diets of lactating dairy cows, on productive performance, and milk fat acids profile: a meta-analysis

Mahdavi, Ali; Mahdavi, Ata; Darabighane, Babak; Mead, Andrew; Lee, Michael R. F.

doi:10.1080/1828051x.2019.1585211

Cited by 16 publications

(22 citation statements)

References 36 publications

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“…The negative effect of the dietary inclusion of vegetable oils on cow's milk fat content is well documented in the literature (C. G. S. Ribeiro et al, 2018;Lopes et al, 2019;Mahdavi et al, 2019;Rodrigues et al, 2019). Additionally, the current results corroborate Souza et al (2019) Lopes, F. C. F. et al in the productive performance trial.…”

Section: Discussionsupporting

confidence: 89%

“…These data corroborate the results of Souza et al (2019) in the productive performance trial. The linear increase in milk protein content (P=0.0242) promoted by SO supports the results from some studies (Rodney, Celi, Scott, Breinhild, & Lean, 2015;Lopes et al, 2019), although the literature commonly indicates that lipid supplementation of diets supplied to cows reduces milk protein content (NRC, 2001;Mahdavi, Mahdavi, Darabighane, Mead, & Lee, 2019). The linear reduction in milk fat content was proportionally higher than the linear increase in milk protein content.…”

Section: Discussionsupporting

confidence: 73%

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Ruminal parameters and fatty acid composition of omasal digesta and milk in cows fed sugarcane-based diets supplemented with sunflower oil

Lopes

Souza

Filho

et al. 2020

Semina: Ciênc. Agrár.

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This study evaluates the intake and digestion of nutrients, parameters of rumen fermentation and degradation, omasal digesta and milk fatty acid composition, productive performance, and the concentration of serum metabolites in cows fed 600 g kg-1 sugarcane-based diets containing 0 (control), 15, 30, and 45 g kg-1 sunflower oil (SO) on a dry matter (DM) basis. Four rumen-cannulated Holstein x Gyr cows yielding 15±5 kg day-1 with 110±10 days in milk were allocated in a 4 x 4 Latin square design. Data were analyzed using mixed models, and significant differences were declared at P < 0.05. There was no effect of SO on the intake and apparent digestibility of DM, crude protein, neutral detergent fiber (NDF) and nonfibrous carbohydrates, but there was a linear increase in the intake and digestibility of ether extract. Dietary SO levels did not alter the ruminal degradability parameters for DM and NDF, rumen pH and contents of ammonia N, acetate, propionate and volatile fatty acids. Milk fat content and yield were linearly decreased, whereas a linear increase in milk protein content was observed in response to increasing levels of SO, but with no effect on milk yield. Linear reductions in palmitic and ?-linolenic acid contents, a linear increase in trans-10 C18:1 and elaidic acids, and a quadratic effect on vaccenic and rumenic acids were observed in omasal digesta of cows fed increasing levels of SO. Overall, up to 45 g kg-1 SO can be included on DM of chopped sugarcane-based diets without reducing consumption, apparent digestibility and rumen degradability of DM and fiber. Supplementing chopped sugarcane-based diets with 30 to 45 g kg-1 SO (DM basis) promotes milk fat depression due to the inhibition of mammary lipogenesis by specific rumen-derived fatty acid intermediates of the biohydrogenation of unsaturated C18 fatty acids. The inclusion of 15 to 45 g kg-1 SO in chopped sugarcane-based diets improves the nutritional quality of milk fat, with increases in the levels of oleic, vaccenic and rumenic acids, beneficial to human health, and a reduction in the levels of the hypercholesterolemic lauric, myristic and palmitic acids.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionsupporting

confidence: 73%

Ruminal parameters and fatty acid composition of omasal digesta and milk in cows fed sugarcane-based diets supplemented with sunflower oil

Lopes

Souza

Filho

et al. 2020

Semina: Ciênc. Agrár.

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“…However, the milk protein content was always less than 2.9% (Table 6), which is the minimum value established by Normative Instruction 76. Meta-analysis studies have shown that supplementing the diets of lactating cows with unsaturated FAs (Rabiee et al, 2012;Mahdavi, Mahdavi, Darabighane, Mead, & Lee, 2019) promotes a reduction in milk protein content, likely a result of depressed microbial protein synthesis in the rumen (J. C. Lopes et al, 2017).…”

Section: 48; Tablementioning

confidence: 99%

Milk fatty acid composition in Holstein x Gyr dairy cows fed chopped elephantgrass-based diets containing two types of sunflower oil associated with two methods of concentrate feeding

Lopes

Ribeiro²,

Rodríguez

et al. 2020

Semina: Ciênc. Agrár.

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wo experiments were carried out in a 2 x 2 factorial arrangement with the objective of evaluating two methods of concentrate feeding for Holstein x Gyr cows fed 600 g kg-1 chopped elephantgrass-based diets supplemented at 45 g kg-1 DM with two types of sunflower oil (SO). The types of SO differed in the levels of oleic and linoleic fatty acids (FAs): high oleic/low linoleic acid – HO (73 and 10 g 100 g-1 FA, respectively) and medium oleic/medium linoleic acid – MO (43 and 34 g 100 g-1 FA, respectively). The concentrates containing HO SO or MO SO were supplied separately from the forage twice a day after the two milkings (TAD) or as part of a total mixed ration (TMR). In Experiment 1, a 4 x 4 Latin square design was used to evaluate the ruminal fermentation and degradation parameters in four rumen-cannulated cows (430±39 kg; 79±20 days in milk; 16.4±3.1 kg day-1 of milk). In Experiment 2, a randomized block design was used to evaluate the nutrient intake, plasma contents of metabolites and FAs, milk yield and composition, and FA profile of milk fat in 32 cows (444±84 kg; 75±31 days in milk; 15.4±4.8 kg day-1 of milk). The results were analyzed by mixed models (P ? 0.05). The TMR diets promoted higher nutrient intake and rumen fermentation (higher ammonia N, acetate, propionate and total volatile FA contents) without affecting milk, fat, protein and lactose yields. TAD-fed cows presented higher feed efficiency and produced milk fat with a more nutritionally desirable FA composition, with higher vaccenic and rumenic acid contents and lower trans-10 C18:1 and palmitic acid contents. The DM intake, parameters of rumen fermentation and milk, fat, protein and lactose yields were similar for the HO SO and MO SO diets. The most nutritionally positive characteristics for human health in the milk fat of HO SO-fed cows were the higher eicosapentaenoic (+34%) and oleic acid (+11%) contents and lower palmitic acid content (-10%). Higher contents of vaccenic (+71%) and rumenic (+74%) acids and lower trans-10 C18:1 (-10%), elaidic (-32%), lauric (-14%) and myristic (-11%) acid contents were the most positive aspects of the milk fat of MO SO-fed cows. Considering the magnitudes of the differences in the levels of these FAs, it is concluded that the milk fat of cows fed MO SO showed a healthier milk FA profile.

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“…A recent study by Suksombat et al (2016) concluded that supplementation of lactating dairy cows with LO at 2.9% DM in the basal diet (500 g/d) maintaining a 56:44 roughage to concentrate ratio did not alter feed and nutrient intakes. The meta-analysis by Mahdavi et al (2019) showed that DMI was reduced as a result of SO supplementation in the diets of dairy cows. In the present study, buffaloes were fed LO or SO at about 25.6 g/kg of DMI (400 g/ head/d), may not be high enough to reduce DM and nutrient intakes.…”

Section: Dry Matter and Nutrient Intakesmentioning

confidence: 99%

“…Due to the potential health benefits for humans, there is an awareness in augmenting cis-9, trans-11 conjugated linoleic acid (CLA) and polyunsaturated n-3 FA, while decreasing medium-chain FA in the milk of dairy cows through plant oils supplementation (Shingfield et al, 2013;Kairenius et al, 2018;Mahdavi et al, 2019). To our knowledge, the effect of plant oils varying in linoleic or linolenic acid concentrations (soybean oil and linseed oil) on milk composition, milk fatty acids profile, and blood lipid constituents in lactating buffaloes are very limited.…”

Section: Introductionmentioning

confidence: 99%

Lactation Performance, Milk Fatty Acid Composition, and Blood Lipid Profile of Lactating Buffaloes in Response to Dietary Soybean and Linseed Oils

Eldahshan

Saddick

Selim

2020

Trop. Anim. Sci. J.

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There is an awareness in augmenting conjugated linoleic acid (CLA) and n-3 fatty acids (FA), while lowering saturated FA (SFA) in ruminant milk due to their advantageous health benefits for humans. Therefore, we aimed to investigate the effects of soybean and linseed oils on milk yield, milk composition, milk FA profile, and blood lipid metabolites. Eighteen multiparous Egyptian buffaloes fed corn silage and clover hay-based diet were allocated at random for body weight, days in milk, and milk yield into 3 groups of 6 buffaloes each using a randomized block design. Dietary treatments consisted of three concentrate supplements containing no additional plant oil (CON) or containing soybean oil (SO) or linseed oil at a level of 2.6% of dry matter intake (DMI) (400 g/head/d; 25.6 g/kg DMI). Moderate dietary inclusion of SO or LO had no detrimental effects on DMI, milk production, or milk fat per cent. Milk protein, lactose, ash, and total solids concentrations were increased by LO supplementation. The LO diet decreased milk total SFA content (C10:0, C12:0, C14:0, C16:0), augment monounsaturated FA (MUFA), 18:3n-3 FA, CLA, and polyunsaturated FA, as well as lower atherogenicity index and n-6:n-3 compared to CON. On the other hand, the SO diet increased milk fat content of n-6 FA, CLA, MUFA, and n-6:n-3, and decreased the atherogenicity index compared to CON. LO supplementation had no effect on serum concentrations of triglyceride, total lipids, HDL, and LDL. However, the SO group tended to have greater serum total lipids and LDL concentrations and significantly elevated level of serum cholesterol. In conclusion, dietary inclusion of LO in the concentrate supplement of dairy buffaloes could enrich the nutritive value of milk with advantageous FA (n-3 FA, MUFA, and CLA) and lower the atherogenicity index and n6 to n3 ratio without triggering any adverse effects on buffalo performance.

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Effects of soybean oil supplement to diets of lactating dairy cows, on productive performance, and milk fat acids profile: a meta-analysis

Cited by 16 publications

References 36 publications

Ruminal parameters and fatty acid composition of omasal digesta and milk in cows fed sugarcane-based diets supplemented with sunflower oil

Ruminal parameters and fatty acid composition of omasal digesta and milk in cows fed sugarcane-based diets supplemented with sunflower oil

Milk fatty acid composition in Holstein x Gyr dairy cows fed chopped elephantgrass-based diets containing two types of sunflower oil associated with two methods of concentrate feeding

Lactation Performance, Milk Fatty Acid Composition, and Blood Lipid Profile of Lactating Buffaloes in Response to Dietary Soybean and Linseed Oils

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