Estimation of maximum thermo-hygrometric index thresholds affecting milk production in Italian Brown Swiss cattle

Journal of Dairy Science
A MaggiolinoP De Palo

Abstract

It is known that heat stress affects dairy cow performance in multiple ways: physiological, behavioral, reproductive, and productive. The aim of the present study was to determine if a threshold of temperature-humidity index (THI) exists for multiple milk production traits (milk yield, fat-corrected milk, protein and fat yield and percentage, energy-corrected milk, cheese production, and cheese yield) in Italian Brown Swiss dairy cows from the period 15 d before the day of the Italian Breeders Association test-day sampling. A 10-yr data set (2009-2018) containing 202,776 test-day records of 23,296 Brown Swiss cows was matched with the maximum THI. In all parities considered, no THI thresholds were observed for milk yield in Brown Swiss. In contrast, a THI threshold of 75 was identified for fat-corrected milk. No THI threshold was found for fat percentage, but fat yield showed the highest THI thresholds in cows of first and second parity. Protein yield and cheese production were affected by heat stress with average THI threshold of 74. The THI thresholds identified indicate that the Brown Swiss breed has higher thermal tolerance versus literature values reported for Holstein cows. As THI rises, Brown Swiss cows tend to produce t...Continue Reading

References

Sep 1, 1976·Journal of Dairy Science·H D Johnson, W J Vanjonack
Jul 1, 1994·Journal of Dairy Science·D V Armstrong
Sep 26, 2000·Journal of Dairy Science·O RavagnoloG Hoogenboom
Jul 3, 2003·Journal of Dairy Science·J W West
Nov 19, 2003·International Journal of Biometeorology·Abelardo Correa-CalderonChristine Howison
Nov 6, 2004·Journal of Animal Science·J W West
Feb 14, 2007·Journal of Dairy Science·J R BryantD J Garrick
Mar 21, 2007·Journal of Dairy Science·J BohmanovaJ B Cole
Aug 19, 2007·Journal of Dairy Science·M I Endres, A E Barberg
Jan 29, 2010·Journal of Dairy Science·J B WheelockL H Baumgard
Mar 27, 2010·Journal of Dairy Science·I AguilarS Tsuruta
Jul 1, 2010·Animal : an International Journal of Animal Bioscience·U BernabucciA Nardone
Nov 12, 2013·Journal of Dairy Science·U BernabucciA Nardone
Oct 16, 2014·Animal : an International Journal of Animal Bioscience·D L Hill, E Wall
Jan 1, 2013·Annual Review of Animal Biosciences·Lance H Baumgard, Robert P Rhoads
Dec 31, 2014·Journal of Dairy Science·U BernabucciL Calamari
May 28, 2019·Journal of Thermal Biology·Julia HeinickeThomas Amon
Feb 20, 2020·Journal of Animal Breeding and Genetics = Zeitschrift Für Tierzüchtung Und Züchtungsbiologie·Martino Cassandro

❮ 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.