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"Experientia docet" - Experience is the best teacher

Gut dysbiosis: Nutritional causes and risk prevention in poultry, with reference to other animals

  • 2025
  • Issue: 2
  • Volume: 55
A. Salahi, W.A. Abd El-Ghany, Y.A. Attia, N.M. Zabermawi, F. Bovera, & V. Tufarelli Page: 32 - 63
  • 2026-06-04
  • Megan North

The poultry gastrointestinal microbiome consists of more than 900 bacterial species and their metabolites; it serves as an indicator of bird health and is influenced by nutrition, medication, and other factors. Dysbiosis is a form of reduced microbial diversity, characterised…

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Perspectives and advantages of using olive (Olea europaea) by-products as a dietary supplement for rabbit production and health

  • 2023
  • Issue: 5
  • Volume: 53
C. Losacco, V. Laudadio, M. Schiavitto & V. Tufarelli Page: 737 - 754
  • 2026-06-04
  • Megan North

Over the years, the olive oil market has increased considerably due to its organoleptic features and increasing awareness of the beneficial properties of olive products for human health. However, the olive oil production processes generate a variety of wastes and…

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Dietary protected fat and conjugated linoleic acid improves ewe milk fatty acid composition

  • 2023
  • Issue: 2
  • Volume: 53
A. Grigorescu, I. Balta, C. Julean, E. Simiz, S. Voia, D. Stef, E. Alexa, I. Popescu, A. Marcu, I. Pet, T. Callaway, N. Corcionivoschi, L. Stef Page: 197 - 210
  • 2026-06-04
  • Megan North

The effects of protected fats (Optima 100) and conjugated linoleic acid (Endulac®-CLA) supplementation on sheep milk saturated and unsaturated fatty acid composition were investigated. Sheep were divided into four experimental groups (15 ewes/group) including: i) a control group - basal…

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The effect of formaldehyde treatment of canola oilcake meal and sweet lupins on the in situ dry matter and crude protein digestibility

  • 2023
  • Issue: 1
  • Volume: 53
T.S. Brand, J.H.C van Zyl, O.Dreyer Page: 91 - 100
  • 2026-06-04
  • Megan North

The value of feed protein sources in ruminant nutrition is measured by how effectively the protein is degraded in the rumen and converted into microbial protein. High-producing ruminants acquire high nutritional requirements to sustain their metabolic demands for production and…

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Protected sodium butyrate in chicken diets until 21 days of age improves intestinal development and performance

  • 2022
  • Issue: 5
  • Volume: 52
M. F. Pires1, N. S. M. Leandro1, M. B. Café1, F. B. Carvalho1, D. V. Jacob2, R. A. Noleto-Mendonça3#, S. D. Assis4, J. M. S. Martins5 Page: 591 - 602
  • 2026-06-04
  • Megan North

This study was developed to examine the performance, carcass and cut yields, nutrient digestibility, and intestinal histomorphometry of chickens fed diets supplemented with protected sodium butyrate until 21 days of age. Two experiments were conducted, both of which involved the…

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Impact of various dietary levels of zeolite on broiler performance, digestibility, and carcass traits

  • 2022
  • Issue: 3
  • Volume: 52
M.S.D. Pavlak, R.V. Nunes, C. Eyng, A.M. Viott, B.S. Vieira, C. Kaufmann, N. Rohloff Junior, N.C.C. Santos, F.P. Campos & E.H. Cirilo Page: 400 - 408
  • 2026-06-04
  • Dr. Michael MacNeil

The objective of this study was to evaluate the use of clinoptilolite zeolite to enhance performance in broiler chickens. Nine hundred male broiler chickens were distributed in a completely randomized design to four treatments with nine repetitions. Treatments included clinoptilolite…

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Effects of protected sodium butyrate and reduced energy content in diets for broiler chickens

  • 2022
  • Issue: 2
  • Volume: 52
M.F. Pires, D.V. Jacob, N.S.M. Leandro, R.A.N. Mendonça, I. da S. Faria, D.P. Carvalho, H.F. de Oliveira, M.B. Café & J. H. Stringhini Page: 241 - 251
  • 2026-06-04
  • Dr. Michael MacNeil

Effects of protected sodium butyrate (PSB) in broiler diets with reduced metabolizable energy (ME) content on production performance, intestinal histomorphometry and nutrient metabolizability were evaluated in two experiments. In one experiment, 384 one-day-old male chicks with an average weight of…

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Early phase dietary supplementation of lipase and lecithin affects performance, haematology and immunology of broilers

  • 2021
  • Issue: 5
  • Volume: 51
M.N. Shabani, D. De Marzo, L. Esmailzadeh, A. Seidavi, V. Laudadio & V. Tufarelli Page: 670 - 677
  • 2026-06-04
  • Dr. Michael MacNeil

A total of 192 one-day-old Ross 308 chicks were weighed individually (42.0 ± 0.8 g live weight) and randomly assigned to four dietary groups, each with three replicates of 16 birds. One group was a control (CON) and fed a…

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Protease inclusion in plant- and animal-based broiler diets: Performance, digestibility and biometry of digestive organs

  • 2020
  • Issue: 2
  • Volume: 50
D.P. Carvalho, N.S.M. Leandro, M.A. Andrade, H.F. de Oliveira, M.F. Pires, K.A. Teixeira, P.S. Assunção & J.H. Stringhini Page: 291 - 301
  • 2026-06-04
  • Dr. Michael MacNeil

The addition of protease to broiler diets may complement the action of endogenous enzymes and improve protein digestibility. Here, the authors evaluated the effect of adding protease to broiler diets that contained animal-based meal on bird performance, digestibility, and biometry…

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Effects of replacing soybean meal with alternative sources of protein on nutrient digestibility and energy value of sheep diets

  • 2018
  • Issue: 3
  • Volume: 48
K. Zagorakis, D. Liamadis, Ch. Milis, V. Dotas & D. Dotas Page: 489 - 496
  • 2026-06-04
  • flickerleap

The study determined the potential of eight locally produced protein sources to replace soybean meal (SBM) in the diet of sheep. Three in vivo digestibility trials were conducted using a Latin square (3x3, 4x4 and 4x4) experimental design with castrated…

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Effects of varying sweet lupin dietary inclusion levels on feather classes, leather traits and meat composition of feedlot ostriches

  • 2018
  • Issue: 1
  • Volume: 48
T.S. Brand, J.A. Engelbrecht, J. van der Merwe & L.C. Hoffman Page: 186 - 197
  • 2026-06-04
  • flickerleap

The main consumer products derived from ostriches are feathers, leather and meat. Despite progress in optimizing production practices, additional information is still necessary about the value of various raw materials as feed to ensure cost-efficient production. This study aimed to…

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Effect of olive meal and supplemental enzymes on performance traits, blood biochemistry, humoral immunity response and caecal microbiota of broilers

  • 2017
  • Issue: 6
  • Volume: 47
S. Sateri, A. Seidavi, M. Bouyeh, P. Neumann, M. Kutzler, V. Laudadio, F. Loperfido & V. Tufarelli Page: 804 - 812
  • 2026-06-04
  • flickerleap

This study investigated the growth performance, carcass characteristics, blood biochemistry, humoral immunity and caecal microbiota of broiler chicks fed 0, 2, 4, 6, and 8% olive meal (OM) in diet. In addition, this study investigated the use of enzymatic feed…

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The impact of animal source food products on human nutrition and health

  • 2013
  • Issue: 3
  • Volume: 43
H.C. Schönfeldt, B. Pretorius & N. Hall Page: 394 - 412
  • 2026-06-04
  • vanryssen

Throughout the ages the quest for food and drink has influenced humanity’s economic, social and political development, and played a role in the organization of society and history. Nutrition (or what we choose to consume) influences the health of human…

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The effect of dietary crude protein on the fertility of male broiler breeders

  • 2012
  • Issue: 3
  • Volume: 42
N.C. Tyler & H.A. Bekker Page: 304 - 309
  • 2026-06-04
  • flickerleap

Reports on the influence of dietary crude protein on male broiler breeder fertility are not consistent, and therefore an experiment was conducted to determine the effect of three isoenergetic diets containing 10.5%, 12.6% and 15% crude protein, respectively, on Ross…

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Effect of in ovo injection with L-arginine on productive and physiological traits of Japanese quail

  • 2012
  • Issue: 2
  • Volume: 42
H.J. Al-Daraji, A.A. Al-Mashadani, W.K. Al-Hayani, A.S. Al-Hassani & H.A. Mirza Page: 139 - 145
  • 2026-06-04
  • flickerleap

This study evaluated the influence of administering different levels of L-arginine into eggs of 0-day-old Japanese quail embryos. On day 0 of incubation, 480 eggs (120 for each treatment group) were injected with 0% arginine (C group), 1% arginine (T1),…

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