Effects of supplementing rumen-protected lysine and methionine during prepartum and postpartum periods on performance of dairy cows

Lee, C.; Lobos, N.E.; Weiss, W.P.

doi:10.3168/jds.2019-17125

Cited by 34 publications

(52 citation statements)

References 34 publications

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“…The SM diet promoted higher milk yield, ECM, FCM, milk protein percentage, milk protein yield, milk casein percentage, milk fat yield, and total solids yield, and tended (P = 0.06) to increase milk fat percentage (Table 3) than the CON diet. Milk lactose content was lower (4.54% vs. 4.61, P = 0.03) for cows on SM versus CON; the same tendency for lower lactose percentage was observed in other experiment [23]. Cows on CON tended to present higher BCS (3.4 vs. 3.3; P = 0.08) compared with the SM cows although no BW differences were detected (656.5 vs. 648.5 kg; P = 0.12).…”

Section: Plos Onesupporting

confidence: 74%

“…Dietary RPMet supplementation increased plasma Met concentrations by 61% (29.6 vs. 18.4 μM; P < 0.001). The increase in plasma Met concentrations was significantly higher than reported by others feeding similar amounts of supplemental Met from other RPMet supplements [23,[41][42][43]. Increases in plasma free Met in "Met-deficient" Holstein cows duodenally infused with incremental amounts of DL-Met (g/d) were reported as 1.25 μM of plasma Met/g of Met infused [44,45].…”

Section: Plasma Aa Concentrationsmentioning

confidence: 85%

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Effects of rumen-protected methionine supplementation on the performance of high production dairy cows in the tropics

Chiogna

Lopes²,

Schwab³

et al. 2021

PLoS ONE

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Increasing methionine availability in dairy cow diets during the first third of lactation may enhance their performance and health. The aim of this study was to determine the effect of supplementing rumen-protected methionine (Smartamine® M, SM) in a lactation diet with protein and energy levels calculated according to the literature. Seventy-six multiparous Holstein cows (39.1 ± 6.8 kg of milk/d and 65 ± 28 DIM) were assigned to 1 of 2 dietary treatments (38/treatment) according to a randomized complete block design with a 2-wk (covariate) and 10-wk experimental period. Treatments were a basal diet (CON; 3.77 Lys:1Met); and CON + 23 g SM (2.97 Lys:1 Met). Individual milk samples were taken every 2 weeks to determine milk composition. Blood was collected from 24 cows on d+30 d to measure plasma AA levels. Body weight and body condition score (BCS) were measured at the beginning and the end of the experiment. The SM diet promoted higher milk yield (41.7 vs. 40.1 kg/d; P = 0.03). Energy-corrected milk yield (41.0 vs. 38.0 kg/d), milk protein yield (1.30 vs. 1.18 kg/d), milk protein (3.14% vs. 2.97%) and casein (2.39% vs. 2.28%) were also different (P < 0.01) as well as milk fat yield (1.42 vs. 1.29 kg/d; P = 0.02). A trend (P = 0.06) for higher milk fat % (3.41% vs. 3.21%) was observed. Both diets resulted in similar body weight, but CON-fed cows tended (P = 0.08) to have higher BCS. Higher plasma methionine levels were determined with SM compared with CON (29.6 vs. 18.4 μM; P < 0.01), but lysine and histidine were not different. Dietary supplementation of RPM improved productive performance by increasing milk yield and milk components yields, suggesting better dietary AA utilization when Met levels are adjusted in Lys-adequate lactation diets.

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Section: Plos Onesupporting

confidence: 74%

Section: Plasma Aa Concentrationsmentioning

confidence: 85%

Effects of rumen-protected methionine supplementation on the performance of high production dairy cows in the tropics

Chiogna

Lopes²,

Schwab³

et al. 2021

PLoS ONE

View full text Add to dashboard Cite

show abstract

“…The SM diet promoted higher milk yield, ECM, FCM, milk protein percentage, milk protein yield, milk casein percentage, milk fat yield, and total solids yield, and tended (P=0.06) to increase milk fat percentage(Table 3)than the CON diet. Milk lactose content was lower (4.54% vs. 4.61, P = 0.03) for cows on SM versus CON; the same tendency for lower lactose percentage was observed in other experiment[22]. Cows on CON tended to present higher BCS (3.4 vs. 3.3; P = 0.08) compared with the SM cows although no BW differences were detected (656.5 vs. 648.5 kg; P = 0.12).…”

supporting

confidence: 74%

Effects of rumen-protected methionine supplementation on the performance of high production dairy cows in the tropics

Chiogna

Lopes²,

Schwab³

et al. 2020

Preprint

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Increasing methionine availability in dairy cow diets during the first third of lactation may enhance their performance and health. The aim of this study was to determine the effect of supplementing rumen-protected methionine (RPMet) in a lactation diet containing adequate protein and energy levels. Seventy-six multiparous Holstein cows (39.1 ± 6.8 kg of milk/d and 65 ± 28 DIM) were assigned to 1 of 2 dietary treatments (38/treatment) according to a randomized complete block design with a 2-wk (covariate) and 10-wk experimental period. Treatments were a basal diet (CON; 3.77 Lys:1Met); and CON + 14 g RPMet (2.97 Lys:1 Met). Individual milk samples were taken every 2 weeks to determine milk composition. Blood was collected from 24 cows on d+30 d to measure plasma AA levels. Body weight and body condition score (BCS) were measured at the beginning and the end of the experiment. The SM diet promoted higher milk yield (41.7 vs. 40.1 kg/d; P = 0.026), energy-corrected milk yield (41.0 vs. 38.0 kg/d; P ≤ 0.01), milk protein yield (1.30 vs. 1.18 kg/d; P ≤ 0.01), and milk fat yield (1.42 vs. 1.29 kg/d; P = 0.02). Higher milk protein (3.14% vs. 2.97%; P ≤ 0.01) and casein (2.39% vs. 2.28%; P ≤ 0.01) and a trend ( P = 0.06) for higher milk fat % (3.41% vs. 3.21%) were also observed. Both diets resulted in similar body weight, but CON-fed cows tended ( P = 0.08) to have higher BCS. Higher plasma methionine levels were determined with SM compared with CON (29.6 vs. 18.4 μ M ; P < 0.01), but lysine and histidine were not different. Dietary supplementation of RPM improved productive performance by increasing milk yield and milk components yields, suggesting better dietary AA utilization when Met levels are adjusted in Lys-adequate lactation diets.

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“…This is similar to Girma et al (2019) and Xu et al (1998) who also observed increased DMI postpartum when RPL was provided at 27 g/cow or 40 g/ cow, respectively, of intestinally available Lys; however, these researchers also observed increased DMI prepartum. However, a dissimilar outcome was also reported, as RPL and RPM were consumed during the transition period, there were no changes in DMI and BW (Lee et al, 2019). It is possible that differences in diet formulation likely contributed to differences in results.…”

Section: Intake Bw Bcs and Bhb Postpartummentioning

confidence: 99%

Feeding rumen-protected lysine prepartum increases energy-corrected milk and milk component yields in Holstein cows during early lactation

Fehlberg

Guadagnin

Thomas

et al. 2020

Journal of Dairy Science

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kg/d, respectively). Plasma concentrations of Lys prepartum (69.8 ± 1.8 µM) increased for cows in PRE-L compared with those in PRE-C (62.5 ± 1.3 µM). In conclusion, RPL consumed prepartum tended to increase postpartum DMI and increased energy-corrected milk and milk component yields. This indicates that prepartum supply of intestinally available Lys is pertinent to postpartum performance. However, postpartum supply of intestinally available Lys had no effect on cows' performance.

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Effects of supplementing rumen-protected lysine and methionine during prepartum and postpartum periods on performance of dairy cows

Cited by 34 publications

References 34 publications

Effects of rumen-protected methionine supplementation on the performance of high production dairy cows in the tropics

Effects of rumen-protected methionine supplementation on the performance of high production dairy cows in the tropics

Effects of rumen-protected methionine supplementation on the performance of high production dairy cows in the tropics

Feeding rumen-protected lysine prepartum increases energy-corrected milk and milk component yields in Holstein cows during early lactation

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