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- W2550347798 abstract "In monogastric animals capsicum affects insulin homeostasis, glucose metabolism and nutrient partitioning. Recent research has shown a beneficial response on milk production and glucose utilization in dairy cows fed rumen-protected Capsicum oleoresin. During early lactation, when cows are in negative energy balance, they are in a state of insulin resistance (IR), promoting increased lipolysis, decreased peripheral tissue sensitivity and making more glucose available for mammary milk synthesis (i.e., “glucose-sparing”). The hypothesis of the current study is that rumen-protected capsicum extract enhances milk production during early lactation. Multiparous New Zealand Holstein Friesian cows on a commercial farm were randomly assigned to a Control group (CON; n = 25) or a group receiving 100 mg/d per cow of rumen-protected capsicum oleoresin (Nexulin, Pancosma, NEX; n = 25) during the first 100d in milk to determine the effect of Nexulin on milk production and body weight during early lactation under pasture-grazing conditions. All cows were managed exactly the same, as a single group, and were milked using 3 automated milking systems, allowing daily measurements of milk yield and composition and body weight. Nexulin was provided in 0.22 kg/d concentrate to NEX cows. All cows received < 3kg concentrate, 0.5 kg molasses and ad libitum access to grass pasture. Data were analyzed by (multivariate) analysis of variance (M)ANOVA, using initial body weight as a covariate for production parameters. Average milk yield was increased in NEX cows (27.9 vs. 26.1 kg/d, ± 0.9, P < 0.06) during the first 100 d of lactation. However, the effect occurred after peak production (wk > 5; 27.7 vs. 25.7 kg/d, ± 0.9, P < 0.04). Milk composition did not differ, but yield of fat, protein and lactose were increased in NEX cows (respectively, g/d: 1,397 vs. 1,313, ± 60, P < 0.17; 1,118 vs. 1,014 ± 39, P < 0.02; 1,409 vs. 1,321 ± 48, P < 0.07). All cows maintained their body weights (no differences) and prevalence of subclinical ketosis, based on milk fat: protein > 1.5, was lower in the NEX group (1.7 vs. 10.2%, ± 1.0, P < 0.02; nonparametric analysis). Rumen-protected capsicum increased milk production during early lactation in cows on pasture, but not until after peak lactation (wk > 5). This delayed response is consistent with delayed glucose sparing and may be due to the previous observation that in the New Zealand pasture-adapted strain of Holstein Friesian cows, IR is lower and insulin levels are higher immediately post-partum compared to American Holstein cows." @default.
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- W2550347798 date "2016-10-01" @default.
- W2550347798 modified "2023-09-27" @default.
- W2550347798 title "1395 Effect of rumen-protected capsicum on milk production in early lactating cows in a pasture-based system" @default.
- W2550347798 doi "https://doi.org/10.2527/jam2016-1395" @default.
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