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"Experientia docet" - Experience is the best teacher

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
  • 2026-06-09
  • 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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Bayesian estimates of genetic parameters for bodyweights in Mecheri sheep of India

  • 2022
  • Issue: 2
  • Volume: 52
R. Rajendran, J. Muralidharan, C. Bandeswaran, S.K. Illa, K. Kizilkaya, S.O. Peters & A.K. Thiruvenkadan Page: 234 - 240
  • 2026-06-09
  • Dr. Michael MacNeil

An understanding of genetic information and relationships among traits is required for an improvement programme to be successful. Therefore, this study aims to estimate certain (co)variance components for bodyweights Mecheri sheep collected at various ages. The data consisted of 2…

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Protected lysine in diets for 25–100 kg pigs

  • 2022
  • Issue: 2
  • Volume: 52
J.L. Figueroa-Velasco, D. Trujano-San Luis, J.A. Martínez-Aispuro, M.T. Sánchez-Torres, J.L. Cordero-Mora, A. Ruíz-Flores & M.M. Crosby-Galván Page: 202 - 213
  • 2026-06-09
  • Dr. Michael MacNeil

The digestible lysine requirements for fattening pigs have not been established clearly. The objective of this trial was to determine a level of protected lysine in pig diets that was adequate for growth performance, carcass characteristics, and plasma urea nitrogen…

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Diversity and taxonomic identification of bacteria in the rumen of zebu cattle fed various diets

  • 2022
  • Issue: 2
  • Volume: 52
B.K. Korir, J.K.N. Kuria, D.M. Mwangi & C.K. Gachuiri Page: 195 - 201
  • 2026-06-09
  • Dr. Michael MacNeil

In this study bacterial populations were identified in the rumen of zebu cattle fed various diets and classified taxonomically with metagenomic sequencing of the 16S rRNA gene. Twenty-four (24) heifers were used in a completely randomized experimental design to test…

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Effects of feeding pellets, live earthworms and tilapia on the growth of African sharptooth catfish fingerlings

  • 2022
  • Issue: 2
  • Volume: 52
M.Y. Moroasui, A. Ampofo-Yeboah & M.A Antwi Page: 186 - 194
  • 2026-06-09
  • Dr. Michael MacNeil

The objective of the study was to evaluate the effects of feeding live earthworms (Eisenia foetida) (Savigny, 1826) (Musyoka et al., 2020) and tilapia (Oreochromis mossambicus) (Peters, 1852) (Russell et al., 2012) on the growth rate of African sharptooth catfish…

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Serological and molecular identification of Mycobacterium avium subsp. paratuberculosis and associated risks in bovine

  • 2022
  • Issue: 2
  • Volume: 52
A. Rehman, M.T. Javed, M. F. Qamar, A. I. Aqib, I. Ahmed, A. Sikandar, M. K. Rafique, T. Hussain, M. Kashif, M. Riaz, L. Ahmad, M. Nazar & M.F.A. Kulyar Page: 177 - 185
  • 2026-06-09
  • Dr. Michael MacNeil

Discrepancies in sensitivity and specificities of tests (enzyme-linked immunoassay (ELISA) and tuberculin skin test (TST)), prevalence, and potential risk factors associated with Mycobacterium avium subsp. paratuberculosis (MAP) of bovine were hypothesized to affect its control. Keeping PCR as the gold…

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Effect of additives on the post-thaw quality of Aksaray Malaklı dog semen

  • 2022
  • Issue: 2
  • Volume: 52
C. Öztürk & Ş. Güngör Page: 162 - 167
  • 2026-06-09
  • Dr. Michael MacNeil

The goal of this study was to determine effects of trehalose (T) and Trolox (TX) additives on post-thaw viability of canine sperm after freezing. The sperm-rich portions of ejaculates obtained from 15 dogs were divided into three aliquots, which were…

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Rumen microbial diversity of Bonsmara cattle using amplicon sequencing during a 120-day growth trial

  • 2022
  • Issue: 2
  • Volume: 52
D.A. Linde, E. van Marle-Köster, C.J.L. du Toit, M.M. Scholtz & D. Schokker Page: 148 - 161
  • 2026-06-09
  • Dr. Michael MacNeil

Improved understanding of the microbial populations during intensive feeding of feedlot cattle holds potential for optimizing production efficiency. Ionophores are used to increase the production and efficiency of ruminants and are commonly used in South African feedlots. Bonsmara bull calves…

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Dry sugarcane yeast and urea could replace soybean meal in the diet of buffalo heifers

  • 2022
  • Issue: 2
  • Volume: 52
D.O. Lima, A.L.R. Magalhães, D.M. de Lima Júnior, F.F.R. de Carvalho, M.L.M.W. Neves, M.V.G. da Silva & R.A.S. Pessoa Page: 142 - 147
  • 2026-06-09
  • Dr. Michael MacNeil

The aim of this study was to examine the effects of replacing soybean meal (SBM) with increasing levels (0%, 33%, 67%, and 100%) of sugarcane yeast and urea on the intake, performance, and feeding behaviour of buffalo heifers. Twenty Murrah…

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Influence of graded level of salt and maturation times on quality traits of beef and pork sun-dried meat: A test pilot

  • 2022
  • Issue: 2
  • Volume: 52
M. Eger, E.L. Kern, S.T. Carvalho, P.L.O. Carvalho, J.L. Genova & M.A. Grando Page: 134 - 141
  • 2026-06-09
  • Dr. Michael MacNeil

The goal of this study was to assess the qualitative and sensorial characteristics of beef and pork sun-dried meat (SDM) with different salt (NaCl) levels (6%, 8% and 10%) and curing times (30 and 40 h). Samples from the beef…

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An exogenous fibrolytic enzyme mixture enhances in vitro ruminal degradability of red grape pomace by-product

  • 2022
  • Issue: 2
  • Volume: 52
G. Mhlongo, C.M. Mnisi, V. Mlambo & B. Dlamini Page: 126 - 133
  • 2026-06-09
  • Dr. Michael MacNeil

Usefulness of red grape pomace (GP) by-product in ruminant rations is restricted by its high fibre content. Pre-treatment with exogenous carbohydrases may partly resolve this problem. Therefore, the effects of various levels of an exogenous fibrolytic enzyme mixture (Viscozyme® L)…

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Prevalence and economic significance of Hypoderma bovis in Ardahan

  • 2022
  • Issue: 1
  • Volume: 52
C. Ayvazoḡlu, Ş. KizilTepe & P. Ayvazoḡlu Demir Page: 120 - 125
  • 2026-06-09
  • Dr. Michael MacNeil

The aim of this study was to determine the prevalence of cattle infected by Hypoderma, a parasite that causes great economic losses in the world, especially in the Ardahan region. A total of 31 095 cattle skins were randomly selected…

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Gene expression at different cell stages of in vitro-fertilized bovine embryos

  • 2022
  • Issue: 1
  • Volume: 52
N.M. Al-Malahi, M.H. Daghestani, M.Q. Al-Ghadi & A.R. Alhimaidi Page: 111 - 119
  • 2026-06-09
  • Dr. Michael MacNeil

The birth rate of embryos produced in vitro (IVF) is still lower than that of embryos produced in vivo. Three major steps for the success of the IVF technique are maturation of immature oocytes, fertilization of matured oocytes, and culture…

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Bone, microbiological and intestinal characteristics of piglets fed diets containing Lithothamnium calcareum

  • 2022
  • Issue: 1
  • Volume: 52
J. L. Genova, N. T. E. Oliveira, C. P. Scherer, P. L. O. Carvalho, A. B. S. Costa, S. M. B. Artoni, A. C. G. Júnior, L. B. A. Santos, S. T. Carvalho & J. Bortoluzzi Page: 98 - 110
  • 2026-06-09
  • Dr. Michael MacNeil

The aim of this study was to assess the effect of calcitic seaweed (CS), calcitic limestone (CL) and monodicalcium phosphate (DP) fed to piglets in various combinations on their gastrointestinal tract and bones. A total of 128 piglets (21 days…

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Effects of flushing and various doses of β-Carotene and vitamin E applications on the reproductive performance of ewes

  • 2022
  • Issue: 1
  • Volume: 52
S. Ozis Altincekic, M. Koyuncu & S. Duru Page: 90 - 97
  • 2026-06-09
  • Dr. Michael MacNeil

The aim of this study was to determine whether fertility could be enhanced in Kıvırcık ewes during the anoestrous period by flushing or by administering an injectable (Ovostim) containing β-Carotene and vitamin E. Three-year-old Kıvırcık ewes (n = 99) were…

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Quality of ram semen cryopreserved in egg yolk extender supplemented with myricetin

  • 2022
  • Issue: 1
  • Volume: 52
L.C.P. Arruda, R.A.J.A. Silva, F.C.C. Mergulhão, M.M. Monteiro, J.A.S. Costa, A.M. Batista, P.L.J. Monteiro Júnior, D.C.M. Seal & M.M.P. Guerra Page: 77 - 89
  • 2026-06-09
  • Dr. Michael MacNeil

The aim of this study was to evaluate the ability of the antioxidant myricetin to protect ovine spermatozoa during freezing-thawing. Five semen pools, obtained from four rams, were diluted and frozen in Tris-egg yolk extender (5% glycerol) supplemented with myricetin…

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