Evidence map›Paper›PMID 32416817›Full record

ArticlePoultry science2020

Effect of age on the relationship between metabolizable energy and digestible energy for broiler chickens.

Z Yang, V R Pirgozliev, S P Rose, S Woods, H M Yang, Z Y Wang, M R Bedford

Abstract read
In one paragraph

Article in Poultry science, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
–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

18 citing papers in PubMed.

  1. Effects of the Addition ofAnimals : an open access journal from MDPI · 2024
    Article
  2. Article
  3. Prediction of net energy of feeds for broiler chickens.Animal nutrition (Zhongguo xu mu shou yi xue hui) · 2024
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Feeding Black Pepper (Veterinary sciences · 2023
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Effects of the inclusion of black soldier fly larvae (Saudi journal of biological sciences · 2022
    Article
  16. Article
  17. Article
  18. Article
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

7 authors.

Z YangJoint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu Province 225009, P. R. China; The National Institute of Poultry Husbandry, Harper Adams University, Edgmond, Newport, Shropshire, TF10 8NB, UK.
V R PirgozlievThe National Institute of Poultry Husbandry, Harper Adams University, Edgmond, Newport, Shropshire, TF10 8NB, UK.
S P RoseThe National Institute of Poultry Husbandry, Harper Adams University, Edgmond, Newport, Shropshire, TF10 8NB, UK. Electronic address: sprose@harper-adams.ac.uk.
S WoodsThe National Institute of Poultry Husbandry, Harper Adams University, Edgmond, Newport, Shropshire, TF10 8NB, UK.
H M YangCollege of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu Province 225009, P. R. China.
Z Y WangCollege of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu Province 225009, P. R. China; Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu Province 225009, P. R. China.
M R BedfordAB Vista, Woodstock Court, Blenbeim Road, Marlborougb Business Park, Marlborough, Wiltshire SN8 4AN, UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A total of 960 male Ross 308 chicks (day-old) were used to investigate the effect of age on the relationship between metabolizable energy (ME) and digestible energy (DE) for broiler chickens. Bird growth variables, nitrogen retention (NR), nitrogen digestibility (ND), as well as the relative weight of liver, pancreas, and the gastrointestinal tract were determined. Practical diets that compared 2 cereals (corn and wheat) and exogenous xylanase (0 or 16,000 BXU/kg) were evaluated at 5 ages (7, 14, 21, 28, and 35 D) in a 2 × 2 × 5 factorial arrangement of treatments with 8 replicates per treatment and started with 30 birds per replicate. A randomized block ANOVA analysis of repeated measures was performed, and a 2 × 2 × 5 factorial structure was used to investigate the 2 dietary treatment factors (cereal type and the presence of xylanase) within the 5 bird ages (7, 14, 21, 28, and 35 D), and their interactions. Apparent metabolizable energy (AME) increased linearly from 7 until 28 D of age, but (P < 0.05) decreased at 35 D of age. Digestible energy was high at 7 D of age, then dropped and remained similar (P > 0.05) from 14 to 35 D of age. The AME: DE ratio was lowest (P < 0.05) at 7 D of age but there were no (P > 0.05) differences thereafter. Cereal type and xylanase supplementation did not (P > 0.05) change the ME: DE ratio. The results indicate that determining ME before 14 D of age may give absolute values that are lower than would be obtained with older birds. ME values that are determined on older broiler chickens may overestimate the energy availability of practical feeds used in broiler starter feeds.

Indexed as

Age FactorsAnimal FeedAnimal Nutritional Physiological PhenomenaAnimalsChickensDietDigestionEndo-1,4-beta XylanasesEnergy MetabolismMaleOrgan SizeTriticumZea maysEndo-1,4-beta Xylanasesagebroilerdietdigestible energymetabolizable energy

Identifiers

PMID32416817
PMCPMC7587868

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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.