Eustace A. Iyayi

University of Ibadan

Also at Nigerian Institute of Animal Sciencefrom their recent papers

Publishing since 1992, latest 2025

Animal Science and Zoology
Plant Science
Agronomy and Crop Science
Ecology, Evolution, Behavior and Systematics
Aquatic Science
Insect Science

Publications: 511992–2025
Citations: 312to those papers
h-index: 9i10-index 9
Field-weighted impact: 0.461.00 is the world average
World top 10%: 2%1 of 51 scored papers
Open access: 71%36 papers free to read

By year

Papers, and the citations to them

Publications, left axisCitations to that year’s papers, right axis2026 still in progress

Career

On their papers

Every institution they have given on a paper.

Publications

51 in all

Apparent crude protein digestibility of soyabean meal estimated from ileal digesta of intact and excreta of caecectomised laying hens
2025Nigerian Journal of Animal ProductionJournalOpen access0 citations10.51791/njap.v52i6.9102
Interaction effects of glycine equivalent and standardized ileal digestible threonine in low protein diets for broiler grower chickens

Download CV:PDFWord

Citations received each year

Peerford

To all their work, old papers included. Google Scholar also counts citations from theses, books and web pages, so its line runs higher.

What they work on

From the classification of each paper

Subfields

Animal Science and Zoology3773%
Plant Science2447%
Agronomy and Crop Science612%
Ecology, Evolution, Behavior and Systematics612%
Aquatic Science48%
Insect Science48%
Ecology36%
Food Science36%
Nutrition and Dietetics36%
Cell Biology24%

Health Sciences
Life Sciences
Physical Sciences

Topics most written on

Animal Nutrition and Physiology33
Rabbits: Nutrition, Reproduction, Health15
Livestock and Poultry Management10
Moringa oleifera research and applications10
Phytase and its Applications8
Meat and Animal Product Quality6
Ruminant Nutrition and Digestive Physiology5
Agriculture and Rural Development Research4
Aquaculture Nutrition and Growth4
Cassava research and cyanide4
Food composition and properties3
Plant Micronutrient Interactions and Effects3

Who they write with

Their most frequent co-authors, and the papers those co-authors share

Where their co-authors are

22% of their papers have a co-author abroad

papers co-written1234567Home

Most frequent partner countries

Brazil4
Germany4
United States2
Kenya1
Niger1
Switzerland1
United Kingdom1

Papers with at least one author in that country.

Institutions written with most

Federal College of Wildlife ManagementNG5 papers
Universidade Estadual de MaringáBR4 papers
University of CalabarNG4 papers
Martin Luther University Halle-WittenbergDE3 papers
Purdue University West LafayetteUS2 papers
Nigerian Institute of Animal ScienceNG2 papers
Niger Delta UniversityNG2 papers
International Institute of Tropical AgricultureNG2 papers
Federal University of TechnologyNG2 papers
University of BonnDE1 paper

Where they publish

Nigerian Journal of Animal Production12
Proceedings of the British Society of Animal Science6
Journal of Experimental Agriculture International4
Agricultural Sciences2
Animal - science proceedings2
International Journal of Environment Agriculture and Biotechnology

Development goals addressed

From each paper’s title and abstract

2Zero hunger20
6Clean water and sanitation2
7Affordable and clean energy2
12Responsible consumption and production2
13Climate action1
14Life below water1

Most cited

Effects of organic acid and probiotic on performance and gut morphology in broiler chickens
South African Journal of Animal Science
201639 citationsOpen access · Gold
Quantification of short-chain fatty acids and energy production from hindgut fermentation in cannulated pigs fed graded levels of wheat bran1
Journal of Animal Science7
201537 citations
True phosphorus digestibility of black-eyed pea and peanut flour without or with phytase supplementation in broiler chickens
Poultry Science

Estimation of true preceacal phosphorus digestibility of phytase supplemented groundnut cake in broiler chicken

2022International Journal of Environment Agriculture and BiotechnologyJournalOpen accessSenior authorCorresponding1 citation10.22161/ijeab.73.10

BIOCHEMICAL EVALUATION OF SEED OF AN UNDER UTILIZED LEGUME (Mucuna utili)

2021Nigerian Journal of Animal ProductionJournalOpen accessFirst author19 citations10.51791/njap.v25i1.2213

Livestock production pattern of agropastoralists in peri-urban centres of south-west Nigeria

2021Nigerian Journal of Animal ProductionJournalOpen accessFirst author5 citations10.51791/njap.v30i1.1827

Biodegradation of cassava root sieviate with enzymes extracted from isolated fungi

2021Nigerian Journal of Animal ProductionJournalOpen access0 citations10.51791/njap.v38i1.690

Cellulase and hemicellulase Activity under Submerged Fermentation of Rice Mill feed by Fungi

2019International Journal of Environment Agriculture and BiotechnologyJournalOpen accessSenior author5 citations10.22161/ijeab/4.1.35

Effects of organic acid and probiotic on performance and gut morphology in broiler chickens

2016South African Journal of Animal ScienceJournalOpen accessSenior authorCorresponding39 citations10.4314/sajas.v45i5.6

Effects of Low Protein Diets Supplemented with High Amino Acids (Methionine or Lysine) on Performance of Broilers

2014Journal of Experimental Agriculture InternationalJournalOpen accessFirst authorCorresponding2 citations10.9734/ajea/2014/6265

THE EFFECT OF BREWERS DRIED GRAINS SUPPLEMENTED BY ENZYME ON PERFORMANCE OF ISA-BROWN LAYING HENS

2013Hrčak Portal of scientific journals of Croatia (University Computing Centre)JournalOpen access3 citations

Ileal Digestibility of Amino Acids in Fish Meal-Based Diets for Broiler Starters Using Regression Technique

2013Iranian journal of applied animal scienceJournalOpen accessSenior author0 citations

Precaecal crude and amino acid digestibility in the seeds of a tropical crop (Manihot esculenta) in broilers

2007Proceedings of the British Society of Animal ScienceJournalFirst authorCorresponding0 citations10.1017/s1752756200021475

Livestock production pattern of agropastoralists in peri-urban centres of south-west Nigeria

2003Nigerian Journal of Animal ProductionJournalOpen accessFirst author17 citations10.4314/njap.v30i1.3318

Proximate composition and tannin content of some multipurpose tree leaves

2002Global Journal of Agricultural SciencesJournalOpen accessFirst author2 citations10.4314/gjass.v1i2.2185

Utilization of three biodegraded agro-industrial by-products (AIBs) by layers

2001Proceedings of the British Society of Animal ScienceJournalFirst author0 citations10.1017/s1752756200005913

Kola-pod husk as a partial substitute for maize in layer diets

2000Proceedings of the British Society of Animal ScienceJournal1 citation10.1017/s1752756200001228

Effect of Brewers Dried Grain on Growth Performance and Plasma Amino Acids of Young Pigs

1994Journal of Applied Animal ResearchJournalOpen accessSenior author8 citations10.1080/09712119.1994.9706031

South African Journal of Animal Science2

How it can be read

71% free to read

Diamond 23 · 45%Free to read and to publish
Gold 4 · 8%In an open-access journal
Hybrid 4 · 8%Open in a subscription journal
Bronze 2 · 4%Free to read, no open licence
Green 3 · 6%A copy in a repository
Closed 15 · 29%Behind a paywall

Who funds it

5 of 51 papers name a funder

Conselho Nacional de Desenvolvimento Científico e Tecnológico2
Alexander von Humboldt-Stiftung1
Purdue University1
Tertiary Education Trust Fund1
Universidade Estadual de Maringá1

201334 citationsWorld top 10%Open access · Hybrid

BIOCHEMICAL EVALUATION OF SEED OF AN UNDER UTILIZED LEGUME (Mucuna utili)

Nigerian Journal of Animal Production2

202119 citationsOpen access · Diamond