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Abstract

This study introduces a new nutritional grouping method, OptiGroup, which maximizes milk income over feed cost (IOFC) using a mixed-integer nonlinear programming optimization algorithm. Analyses compared the OptiGroup with the cluster method, the current state-of-the-art nutritional grouping...

Author(s)
Wu, Y.; Liang, D.; Shaver, R. D.; Cabrera, V. E.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 5, pp 4682-4693
Abstract

Milk and its derivatives are important foods that contribute to daily nutrient requirements and improve consumers' health. This study evaluated the effects of supplementing the diet of lactating dairy cows with sunflower oil (SFO), selenium, and vitamin E on the milk's fatty acid profile and fat...

Author(s)
Salles, M. S. V.; D'Abreu, L. F.; R. Júnior, L. C.; César, M. C.; Guimarães, J. G. L.; Segura, J. G.; Rodrigues, C.; Zanetti, M. A.; Pfrimer, K.; Netto, A. S.
Publisher
MDPI AG, Basel, Switzerland
Citation
Nutrients, 2019, 11, 2, pp 481
Abstract

Estimating excreted nutrients is important for farm nutrient management, but seldom occurs on commercial grazing system farms due to difficulties in quantifying pasture intake. Nitrogen (N), phosphorus (P), potassium (K), sulphur (S), calcium (Ca) and magnesium (Mg) intake, excretion and use...

Author(s)
Aarons, S. R.; Gourley, C. J. P.; Powell, J. M.
Publisher
MDPI AG, Basel, Switzerland
Citation
Animals, 2020, 10, 3,
Abstract

Hyperketonemia is a metabolic disease in dairy cows, associated with negative nutrition balance (NNB) induced by low dry matter intake (DMI) and increased nutrient requirements. Hyperketonemia could induce metabolic stress, which might indirectly affect mammary tissue. Autophagy is a highly...

Author(s)
Li XinWei; Li GuoJin; Du XiLiang; Sun XuDong; Peng ZhiCheng; Zhao ChenXu; Xu QiuShi; Abdelatty, A. M.; Mohamed, F. F.; Wang Zhe; Liu GuoWen
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2020, 103, 3, pp 2545-2555
Abstract

This article evaluates the estimated economic impact of nutritional grouping in commercial dairy herds using a stochastic Monte Carlo simulation model. The model was initialized by separate data sets obtained from 5 commercial dairy herds. These herds were selected to explore the effect of herd...

Author(s)
Kalantari, A. S.; Armentano, L. E.; Shaver, R. D.; Cabrera, V. E.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2016, 99, 2, pp 1672-1692
Abstract

The objectives were to review the published literature and use meta-analytic methods to determine the effects of dietary protein fed prepartum on productive performance of dairy cows. The hypothesis was that responses to dietary protein prepartum would differ between nulliparous and parous cows,...

Author(s)
Husnain, A.; Santos, J. E. P.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 11, pp 9791-9813
Abstract

Background: Dairy cows undergo dramatic changes in endocrine and metabolic status around parturition and in early lactation. Meeting the nutritional requirements of transition dairy cows is important for animal health, production and animal wellbeing. Dry cow feeding and managing play an essential...

Author(s)
Gundelach, Y.; Streuff, B.; Franczyk, M.; Kankofer, M.; Hoedemaker, M.
Publisher
BioMed Central Ltd, London, UK
Citation
BMC Veterinary Research, 2020, 16, 134, pp (13 May 2020)
Abstract

The increasing lactational performance of dairy cows over the last few decades is closely related to higher nutritional requirements. The decrease in dry matter intake during the peripartal period results in a considerable mobilisation of body tissues (mainly fat reserves and muscle mass) to...

Author(s)
Gross, J. J.; Bruckmaier, R. M.
Publisher
Cambridge University Press, Cambridge, UK
Citation
Animal, 2019, 13, s1, pp s75-s81
Abstract

Optimal reproductive function in dairy cattle is mandatory to maximise profits. Dairy production has progressively improved milk yields, but, until recently, the trend in reproductive performance has been the opposite. Nutrition, genetics, and epigenetics are important aspects affecting the...

Author(s)
Bach, À.
Publisher
CSIRO, Collingwood, Australia
Citation
Reproduction, Fertility and Development, 2019, 31, 1, pp 40-54
AbstractFull Text

In the current 2001 7th revised Dairy NRC, supplemental vitamin requirements for lactating dairy cows are listed for vitamin A, Vitamin D, and Vitamin E (75,000; 20,000; and 545 IU per head per day, respectively). In addition, production responses to 20 mg supplemental biotin and 50 grams of...

Author(s)
Engstrom, M.
Publisher
The Ohio State Universtiy, Columbus, USA
Citation
28th Annual Tri-State Dairy Nutrition Conference, Fort Wayne, Indiana, USA, 22-24 April 2019., 2019, pp 37-48

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