Changes in production and mammary metabolism of dairy cows in response to essential and nonessential amino acid infusions

Journal of Dairy Science
L Doepel, H Lapierre

Abstract

This study was undertaken to increase our understanding of the need of the mammary gland for the different types of AA and how the mammary gland alters its metabolism in response to a variable AA supply. Eight lactating Holstein cows (61+/-4 DIM) were used in a replicated 4 x 4 Latin square balanced for residual effects with 14-d periods. The diet was formulated to supply 100% of the net energy requirement and 72% of the metabolizable protein requirement. The 4 treatments were 1) abomasal infusions of water, 2) essential AA at 359 g/d, 3) nonessential AA at 356 g/d, and 4) essential AA at 359 g/d+nonessential AA at 356 g/d (total of 715 g/d). The infusates had the same AA profile as casein with the exception that Met was increased to maintain a 3:1 ratio of digestible Lys to Met and because of solubility limitations all the Tyr was replaced by Phe and part of the Glu was replaced by Gln. Milk yield and milk protein yield were increased by the essential AA treatments compared with the other treatments. Mammary uptake of beta-hydroxybutyrate plus lactate tended to increase with the essential AA treatments, whereas glucose mammary uptake tended to be higher with the nonessential AA treatments. With the essential AA treatments, the...Continue Reading

References

Jan 1, 1979·The Journal of Dairy Research·E RoetsG Peeters
Dec 1, 1977·Journal of Dairy Science·J E WohltC L Davis
Sep 1, 1984·Journal of Dairy Science·G B Huntington
Feb 1, 1982·Journal of Dairy Science·T B Mepham
Jan 19, 1999·Journal of Dairy Science·M D HaniganJ L Beckett
Jan 1, 1960·Scandinavian Journal of Clinical and Laboratory Investigation·E RAABO, T C TERKILDSEN
Aug 5, 2004·Journal of Dairy Science·L DoepelH Lapierre
Aug 19, 2007·Journal of Dairy Science·L DoepelH Lapierre
Mar 1, 2009·Animal : an International Journal of Animal Bioscience·H LapierreG E Lobley

❮ Previous
Next ❯

Citations

Nov 14, 2013·Journal of Mammary Gland Biology and Neoplasia·Feng-Qi Zhao
Jan 25, 2011·Journal of Dairy Science·A HayirliHélène Petit
Jul 27, 2015·Journal of Dairy Science·G Cantalapiedra-HijarS Lemosquet
Jan 28, 2012·Journal of Dairy Science·K L BrownF C Gwazdauskas
Aug 25, 2012·Journal of Dairy Science·S G A van der DriftR Jorritsma
Aug 19, 2007·Journal of Dairy Science·L DoepelH Lapierre
Apr 30, 2019·Journal of Dairy Science·A N HristovZ Yu
May 11, 2012·Journal of Animal Science·H LapierreS Lemosquet
Jun 12, 2018·Current Drug Metabolism·Feiran WangShengli Li
Apr 2, 2018·Journal of Dairy Science·C LeeW P Weiss
Jan 19, 2021·Journal of Dairy Science·M N PereiraR A N Pereira

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.