Lipoprotein Patterns in Normal Lactating Holstein Cows Bled at Various Times: Effects of Milking

Gleockler, D H; Ferreri, L. F.; Flaim, Evelyn

doi:10.3181/00379727-165-40944

Cited by 7 publications

(4 citation statements)

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“…Previous reports have documented that VLDLs comprise approximately 0.5% of the total serum lipoproteins in adult dairy cows (Glascock and Welch, ; Grummer and Davis, ). The utilization of VLDL as a source of triglycerides by the mammary epithelium also contributes to the rapid turnover of VLDL in the serum of lactating cows (Gleockler et al., ). Therefore, serum triglyceride concentrations may be an insensitive indicator of the liver's ability to synthesize and secrete VLDL.…”

Section: Discussionmentioning

confidence: 99%

Impact of dietary plane of energy during the dry period on lipoprotein parameters in the transition period in dairy cattle

Newman

Mann

Nydam

et al. 2015

Animal Physiology Nutrition

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The high energy demands of dairy cows during the transition period from late gestation into early lactation can place them at an increased risk for the development of metabolic and infectious diseases. Modification of the dry period diet has been investigated as a preventive means to minimize the detrimental aspects of metabolic shifts during the transition period. Studies investigating the impact of dry period diet on lipid parameters during the transition period have largely focused on markers of lipolysis and ketogenesis. Total cholesterol declines during the periparturient period and increases in early lactation. The impact total energy in the dry period diet has on the ability of the cow to maintain total serum cholesterol, as well as its natural high-density lipoprotein-rich status, during this metabolically challenging window is not clear. The impact of lipoproteins on inflammation and immune function may have a clinical impact on the cow's ability to ward off production-related diseases. In this study, we hypothesized that the provision of adequate, but not excessive, total metabolizable energy, would better allow the cow to maintain total cholesterol and a higher relative proportion of HDL throughout the transition period. Cows were allocated to one of three dry period dietary treatment groups following a randomized block design. Total serum triglycerides, cholesterol and lipoprotein fractions were measured on a weekly basis from approximately 7 weeks pre-calving to 6 weeks post-calving. The cows on the high energy diet maintained total serum cholesterol as compared to the cows provided a lower energy diet, but there was no significant increase in the LDL fraction of lipoproteins between diet treatment groups.

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Section: Discussionmentioning

confidence: 99%

Impact of dietary plane of energy during the dry period on lipoprotein parameters in the transition period in dairy cattle

Newman

Mann

Nydam

et al. 2015

Animal Physiology Nutrition

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“…Plasma Welch, 1975 ;Gloeckler, Ferreri et Flaim, 1980 ;Grummer et Davis, 1984) et l'évolution de celles-ci au cours de différents états physiologiques de ces animaux (Raphael, Dimick et Puppione, 1973 ;Mazur et al, 1986). L'apparition de deux lipoprotéines de mobilité en agarose différente dans la zone des LDL (Puppione et al, 1972) …”

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Apolipoprotéines des lipoprotéines de la vache laitière

Ayrault-Jarrier¹,

Burdin²,

Thomas³

et al. 1988

Reprod. Nutr. Dévelop.

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“…Les (1975,1976). Les variations de leurs caractéristiques ont été étudiées en fonction du cycle gestation-lactation (Raphael, Dimick et Puppione, 1973), de la traite (Gleockler, Ferreri et Flaim, 1980) ou chez la Vache cétonémique (Mc Carthy et a/., 1968). Elles ont également été étudiées en fonction de différentes conditions nutritionnelles, notamment de la teneur de la ration en protéines (Stead et Oldham, 1978) en lipides non protégés (Dryden et al, 1971) ou en lipides protégés (Dryden et al, 1975 Welch, 1975 ;Forte, Bell-Quint et Cheng, 1981) par l'abondance des HDL (58,3 %) et leur relative pauvreté en LDL (19,0 %).…”

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