Nutrient digetibility and production responses of lactating dairy cows when saturated free fatty acid supplements are included in diets: A meta-analysis

Neto, J.M. dos Santos; Souza, Jonas de; Lock, A.L.

doi:10.3168/jds.2021-20699

Cited by 21 publications

(6 citation statements)

References 95 publications

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“…We did not observe any effect of treatment on DMI. Although the role of the polyethoxylated sorbitan itself is not clear, the predominant FA present in both T40 and T60 are SFA, and supplemental SFA do not generally affect DMI (dos Santos Neto et al, 2021a). The reduction of DMI due to FA supplementation is mainly associated with the action of UFA (dos Santos Neto et al, 2021b), which stimulate the secretion of gut hormones related to satiety (Allen, 2000;Relling and Reynolds, 2007;Bradford et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

Abomasal infusion of different exogenous emulsifiers alters fatty acid digestibility and milk fat yield of lactating dairy cows

Prom¹,

Neto

Lock

2022

Journal of Dairy Science

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We evaluated the effects of abomasal infusion of emulsifiers on fatty acid (FA) digestibility and milk production of lactating dairy cows. All emulsifiers examined were polysorbates, nonionic surfactants, consisting of a polyethoxylated sorbitan esterified with FA. The polysorbates tested in this study consisted of the same polyethoxylated sorbitan base but differed by the FA esterified to it. Eight rumen-cannulated multiparous cows (89 ± 13 d in milk) were assigned to a treatment sequence in 4 × 4 Latin squares with 18-d periods consisting of 7 d of washout and 11 d of infusion. Treatments were abomasal infusions of water only (CON) or 30 g/d of different emulsifiers as follows: polysorbate-C16:0 (T40), polysorbate -C18: 0+C16: 0 (T60), and polysorbate-C18:1 (T80). Emulsifiers were dissolved in water and delivered at 6-h intervals (total daily infusion was divided into 4 equal infusions per day). Cows were fed the same diet that contained (% diet dry matter) 32.1% neutral detergent fiber, 15.7% crude protein, 25.8% starch, and 3.32% FA (including 1.92% FA from a saturated FA supplement containing 34.2% C16:0 and 47.7% C18:0). The T80 treatment increased total FA digestibility compared with CON (5.40 percentage units) and T60 (3.90 percentage units) and tended to increase it compared with T40. Also, T40 tended to increase and T80 increased (4.80 percentage units) 16-carbon FA digestibility compared with CON. The T80 treatment increased 18-carbon FA digestibility compared with the other treatments. The T40 treatment tended to increase and T80 increased total FA absorption compared with CON (53 g/d) and T60 (52 g/d). Both T40 and T80 increased the absorption of 16-carbon FA compared with CON and T60. The T60 treatment did not differ from CON for any digestibility variable. Both T40 and T80 increased the yields of milk fat, 3.5% fat-corrected milk, and de novo, mixed, and preformed milk FA compared with CON. In conclusion, not all emulsifiers increased FA digestibility. Compared with CON, T80 increased the digestibility and absorption of total, 16-, and 18-carbon FA. The T40 treatment tended to increase and T80 increased total FA absorption and the yields of milk fat and 3.5% FCM compared with CON. Milk fat yield was increased by increases in de novo, mixed, and preformed milk FA. In our short-term infusion study, results suggest that the predominant FA present in the polysorbate affects its ability to improve FA digestibility. Overall, FA digestibility and absorption were improved the most when cows received the T80 treatment.

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Section: Discussionmentioning

confidence: 99%

Abomasal infusion of different exogenous emulsifiers alters fatty acid digestibility and milk fat yield of lactating dairy cows

Prom¹,

Neto

Lock

2022

Journal of Dairy Science

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“…Recent research suggests that dairy cows have different metabolic and production responses when fed different combinations of C16:0, C18:0, and cis -9 C18:1 ( de Souza et al, 2018 , 2019 ). A large body of evidence has shown that C16:0-enriched (>80% C16:0) supplementation to diets with typical dietary NDF for the Midwest (42–45% of diet DM) consistently increases milk production and NDF digestibility compared with non-FA supplemented control diets ( dos Santos Neto et al, 2021b ) and diets supplemented with other supplements with different blends of FA ( de Souza et al, 2018 ; Western et al, 2020 ). Therefore, the objective of our present study was to evaluate the effects of a low-forage diet balanced for total NDF, starch, and CP on production of high-producing, mid-lactation dairy cows.…”

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confidence: 99%

“…Additionally, we altered the amount of ground corn and soybean meal between treatments to balance the supply of starch and CP, and supplemented FA and AA to support the production of milk and milk components in the LF treatment. We used a C16:0-enriched FA supplement due to recent research showing that C16:0 supplementation increases milk yield, milk fat yield, and NDF digestibility compared with other FA supplements and non-FA-supplemented control diets fed to mid-lactation cows ( dos Santos Neto et al, 2021b ). We maintained RUP while increasing methionine and lysine available for absorption in the LF treatment and decreased RDP to keep CP values similar to the CON treatment.…”

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confidence: 99%

“…While we did not measure rumination or average particle length, the effects of low-forage diets on these variables have been well studied in previous research ( Allen, 2000 ). Although fat supplementation has variable effects on DMI depending on FA profile ( Allen, 2000 ; dos Santos Neto et al, 2021a , b ), a recent meta-analysis observed that when C16:0-enriched supplements were fed at <3% of diet DM they had no effect on DMI compared with non-FA-supplemented control diets ( dos Santos Neto et al, 2021b ). Therefore, C16:0 supplementation in LF in the current study likely did not influence or contribute to the observed increase in DMI.…”

mentioning

confidence: 99%

“…Although we observed no effect of treatments on milk yield, LF increased ECM yield because it increased the yields of both milk fat and protein compared with CON. Under typical forage conditions, C16:0 supplementation increases milk fat yield compared with non-FA-supplemented control diets ( dos Santos Neto et al, 2021b ). C16:0 supplementation in LF likely supported the increase in milk fat yield by providing additional C16:0 for milk fat synthesis.…”

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confidence: 99%

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Potential for low-forage diets to maintain milk production in forage-limited situations

Negreiro,

Lock

2024

JDS Communications

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Graphical Abstract Summary With changes in availability of high-quality forages due to unusual cropping seasons or geographic location, it is important to explore alternative fiber sources and lower forage diets. High-producing, mid-lactation multiparous Holstein cows were fed a control diet containing typical Midwestern forage inclusion levels (19% forage neutral detergent fiber [NDF]) or a low-forage diet (13% forage NDF) plus a C16:0-enriched fatty acid supplement and bypass methionine and lysine. Cows fed the low-forage diet had increased dry matter intake (DMI) and yields of milk fat and protein compared with control. Additionally, the low-forage diet decreased the yields of de novo fatty acids and increased the yields of mixed and preformed milk fatty acids.

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Penaeus vannamei post-larvae growth and economic aspects after hatchery with artemia replacement by commercial feeds

Ramiro

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Cacho³

et al. 2022

Aquacult Int

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Nutrient digetibility and production responses of lactating dairy cows when saturated free fatty acid supplements are included in diets: A meta-analysis

Cited by 21 publications

References 95 publications

Abomasal infusion of different exogenous emulsifiers alters fatty acid digestibility and milk fat yield of lactating dairy cows

Abomasal infusion of different exogenous emulsifiers alters fatty acid digestibility and milk fat yield of lactating dairy cows

Potential for low-forage diets to maintain milk production in forage-limited situations

Penaeus vannamei post-larvae growth and economic aspects after hatchery with artemia replacement by commercial feeds

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