Evidence map›Paper›PMID 34827840›Full record

ArticleAnimals : an open access journal from MDPI2021

Dietary Fat and Betaine Supplements Offered to Lactating Cows Affect Dry Matter Intake, Milk Production and Body Temperature Responses to an Acute Heat Challenge.

S Richard O Williams, Tori C Milner, Josie B Garner, Peter J Moate, Joe L Jacobs, Murray C Hannah, William J Wales, Leah C Marett

Abstract read
In one paragraph

Article in Animals : an open access journal from MDPI, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

S Richard O WilliamsAgriculture Victoria Research, Ellinbank, VIC 3821, Australia.ORCID 0000-0003-1321-6487
Tori C MilnerAgriculture Victoria Research, Ellinbank, VIC 3821, Australia.
Josie B GarnerAgriculture Victoria Research, Ellinbank, VIC 3821, Australia.
Peter J MoateAgriculture Victoria Research, Ellinbank, VIC 3821, Australia.ORCID 0000-0003-4598-2047
Joe L JacobsAgriculture Victoria Research, Ellinbank, VIC 3821, Australia.ORCID 0000-0003-2104-4320
Murray C HannahAgriculture Victoria Research, Ellinbank, VIC 3821, Australia.ORCID 0000-0001-6708-5393
William J WalesAgriculture Victoria Research, Ellinbank, VIC 3821, Australia.
Leah C MarettAgriculture Victoria Research, Ellinbank, VIC 3821, Australia.ORCID 0000-0001-9698-8401

Funding

Agriculture VictoriaDairy Australia (Australia)Gardiner Foundation
6 · The paper itself

Abstract

Supplementing the diet of lactating cows with ingredients that increase energy density, or reduce internal heat production, may reduce some of the negative impacts of hot weather on milk yield. Thirty-two dairy cows were assigned either: (1) basal diet only, (2) basal diet plus canola oil, (3) basal diet plus betaine, or (4) basal diet plus canola oil and betaine. The basal diet was lucerne hay, pasture silage, and grain. Cows were exposed to a four-day heat challenge (temperature-humidity index 74 to 84) in controlled-environment chambers. Canola oil supplementation increased milk production (22.0 vs. 18.7 kg/d) across all periods of our experiment and increased body temperature (39.6 vs. 39.0 °C) during the heat challenge. Betaine supplementation reduced maximum body temperature during the pre-challenge period (39.2 vs. 39.6 °C) but not during the heat challenge (40.3 °C). Cows fed canola oil had greater declines in dry matter intake (5.4 vs 2.7 kg DM) and energy corrected milk (1.3 vs. 1.0 kg) from the pre-challenge to the heat challenge than other cows. Contrary to our expectations, the combination of fat and betaine supplements did not result in a clear benefit in terms of milk production or body temperature. Further work is warranted to understand the interactions between diet and hot weather.

Indexed as

canola oilcattlecontrolled-environment chambersheat challenge

Identifiers

PMID34827840
PMCPMC8614460

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.