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"Experientia docet" - Experience is the best teacher

Suckling piglets submitted to creep feeding management from 5 days-old showed optimal performance and exploratory behaviour

  • 2023
  • Issue: 3
  • Volume: 53
J. D. Agnol, F. Meneghetti, T. S. Gaggini, G. A. Rodrigues, J. L. Genova, P. L. O. Carvalho, S. T. Carvalho, L. B. Costa, D. Paiano, A. Saraiva, C. Eyng & N. T. E. Oliveira Page: 422 - 428

This study aimed to assess the effects of starting creep feeding at different ages on performance, behaviour, haematological, and biochemical parameters in piglets. A total of 138 piglets (1.34 ± 0.25 kg, n = 13 sows), weaned at 21 d-old,…

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Slaughter and carcass characteristics of cross- and purebred lambs finished in a pasture-based system

  • 2023
  • Issue: 3
  • Volume: 53
P.G. Theron, T.S. Brand, S.W.P. Cloete, J.H.C van Zyl, P.E. Strydom Page: 384 - 397

One hundred and twelve cross- and purebred pasture-reared lambs were slaughtered at optimal backfat thickness (4 mm). Selected slaughter, carcass, and meat quality characteristics of these animals were assessed. Slaughter age, but not weight, was influenced by genotype, whereas rams…

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Screening and preliminary analysis of differentially expressed genes in quail embryos for feather colour based on RNA-Sequencing

  • 2023
  • Issue: 3
  • Volume: 53
Y.Q. Hu, X.H. Zhang, Y.Z. Pang, Y.X. Qi, Q.K. Wang, Y.W. Zhao, Z.W. Yuan, T. Wang, L.K. Huo & S.W. Ren Page: 373 - 383

The purpose of this study was to use RNA-Sequencing (RNA-Seq) to screen differentially expressed genes (DEGs) and analyse transcriptomic data from embryonic skin tissues of maroon-feather and white-feather quails. The transcriptome of embryonic skin tissues from quails was sequenced using…

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Possible aetiology of the posterior presentation in Perosomus elumbis

  • 2023
  • Issue: 3
  • Volume: 53
D. Petrović, I. Pihler, I. Stančić, J. Spasojević, J. Dzigurski, A. Bozić, B. Toholj, K. G. Bukurov, S. Sekulić Page: 369 - 372

The aetiology of foetal presentation in cattle is still unresolved. The hind legs are the main source of propulsive movement in cattle, which provides changes in foetal presentation. The assumption is that in the absence of hind leg movements of…

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Trace mineral concentration of forages in connection with sheep dietary requirements

  • 2023
  • Issue: 3
  • Volume: 53
A. Qudoos, U.B. Tahir, S. Ahmad, M. Tariq, M. Imran, R. Nadeem, S. Noreen, N. Luqman, M. Maqbool, I. Jan, Z. Iqbal, M. Raza, M.S. Sajid & H.M. Rizwan Page: 361 - 368

This paper describes the trace and ultra-trace mineral concentration in different forages utilized by sheep (Kajli and Fat tail) in the rangelands of Chakwal district, Punjab, Pakistan. The concentrations of Se, Mo, Zn, Mn, Cu, and Co were assessed using…

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Supplementation of dietary nano zinc phytogenic on growth performance and carcass traits of the growing Kampung Unggul Balitbangtan chickens

  • 2023
  • Issue: 3
  • Volume: 53
C. Hidayat, E. Wina, A. B. L. Ishak, R. Krisnan, Komarudin, S.A. Asmarasari, H. Zainal, T. W. Cahyaningsih, Y.A. Hoesen Page: 338 - 347

The objective of this experiment was to evaluate productive performance during the growing period in Kampung Unggul Balitbangtan (KUB) chickens fed on low- and high-nutrient diets containing different levels of dietary nano zinc phytogenic (NZP). The experiment followed a randomized…

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Estimating milk production and energy-use efficiency of pasture-grazed Holstein and Jersey cows using mathematical models

  • 2023
  • Issue: 3
  • Volume: 53
N.M. Bangani, C.J.C. Muller, K. Dzama, C.W.C Cruywagen, F.V. Nherera-Chokuda & V.E. Imbayarwo-Chikosi Page: 326 - 337

The efficiency of feed use for milk production is critical for sustainable and profitable pasture-based dairy systems. The aim of this study was to estimate milk production and energy-use efficiencies of pasture-grazed Holstein and Jersey cows. Lactation records of 122…

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Effect of additives to Italian ryegrass (Lolium multiflorum Lam.) silage on nutrient composition and rumen parameters in vitro

  • 2023
  • Issue: 2
  • Volume: 53
E. Gürsoy, G. Sezmiş, K. Ali & T. Ayaşan Page: 231 - 238

In this study, Italian ryegrass ensiled in laboratory silos was examined in vitro to evaluate the nutrient composition of silage and rumen parameters. In this study, four experimental treatments were included, which included a control group (Italian ryegrass silage), the…

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The effect of fibre source in finishing diets on lamb performance and muscle fatty acid composition

  • 2023
  • Issue: 2
  • Volume: 53
J.F. Macdonald, O.B. Einkamerer, A. Hugo, A. Lepori, M.D. Fair Page: 315 - 325

The objective of this study was to evaluate the effect of dietary fibre sources on the performance, carcass characteristics, and muscle fatty acid composition of finishing lambs. Fifty-eight Merino ram lambs were randomly allocated to nutritionally similar treatment diets differing…

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A comparison of growth models for cross- and purebred lambs in precision livestock farming systems

  • 2023
  • Issue: 2
  • Volume: 53
P.G. Theron, T.S. Brand, S.W.P. Cloete, J.H.C van Zyl Page: 287 - 301

Implementation of precision livestock farming requires extensive information to be gathered on the production cycle of slaughter lambs. Constructing accurate growth models for crossbred sheep from the South African flock would provide valuable information towards this goal. Two dam lines,…

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Different methodologies for determining the nutrient metabolism and energy coefficients of a commercial diet for two species of parrots of the genus, Amazona

  • 2023
  • Issue: 2
  • Volume: 53
S. D. T. Menezes, G. A. J. do Nascimento, T. R. Gomes, R. C. Nepomuceno, P. H. Watanabe & E. R. Freitas Page: 239 - 249

This study aimed to compare two methods of excreta collection: the traditional, total method and a partial method using indigestible neutral detergent fibre (iNDF) as an internal marker for determining the metabolism coefficients of nutrients and energetic value of the…

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Healthy, sub-clinical, and clinical mastitis in Holstein–Friesian cattle: A comparative echotextural and electrical conductivity study

  • 2023
  • Issue: 2
  • Volume: 53
O. M. Abdullah, S. Aslam, M. A. Khan, H. Mushtaq, M. Hassan, and M. Ijaz Page: 221 - 230

The goal of this research was to investigate the echotextural parameters, numerical pixel values (NPVs), and pixel heterogeneity (PSDs) of the lymph node and udder parenchyma, as well as the correlation between echotextural parameters and electrical conductivity (EC), in order…

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Behavioural responses of alpacas (Vicugna pacos) to novel objects

  • 2023
  • Issue: 2
  • Volume: 53
J. Kapustka & M. Budzyńska Page: 211 - 220

In recent years, keeping alpacas has becoming increasingly popular. However, little research has been conducted on their behaviour. The study aimed to assess behavioural responses of alpacas towards novel objects as a step toward a practical test including novelty 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

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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