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"Experientia docet" - Experience is the best teacher

Effects on egg production and quality of supplementing drinking water with calcium and magnesium

  • 2021
  • Issue: 4
  • Volume: 51
X.J. Yi, A. Rehman, R.W. Akhtar, A. Abbas, K. Hussain, R. Yasin, H.M. Ishaq, R.Z. Abbas, M.A. Raza, H.S. Hu & G. Li Page: 469 - 476

This study was conducted to appraise the effects on egg quality and production performance of laying hens when drinking water was supplemented with calcium (Ca) and magnesium (Mg). A total of 384 (64-week-old) Hy-line Brown laying hens were assigned at…

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Effect of salt concentrations on in vitro rumen fermentation of cellulose, starch, and protein

  • 2019
  • Issue: 6
  • Volume: 49
E.C.B. Costa, G.G.L. Araújo, J.S. Oliveira, E.M. Santos, L.T. Henriques, A.F. Perazzo, A.M. Zanine, G.A. Pereira & R.M.A. Pinho Page: 1139 - 1147

The aim of this study was to evaluate the effects of various concentrations of three salts (sodium chloride (NaCl), magnesium chloride (MgCl2), and calcium chloride (CaCl2)) on the in vitro rumen fermentation of cellulose, starch, and protein substrates. Six salt…

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Bromide: A potential risk to livestock production in South Africa

  • 2019
  • Issue: 6
  • Volume: 49
N.H. Casey, H.L. Lucht & B. Reijnders Page: 977 - 983

Bromide (Br-) concentrations (mg/L) in groundwater range from no observed adverse effect levels (NOAEL), which is considered safe, and increase to constituent of concern (COC) when the concentrations approach the recommended maximum levels for safety, and to potentially hazardous chemical…

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Exposure assessment of potentially toxic trace elements in indigenous goats in the rural communal production systems of the nort

  • 2004
  • Issue: 5
  • Volume: 34
J.A. Meyer and N.H. Casey Page: 219 - 222

Recent advances in analytical techniques have allowed hydro-geochemical databases to form an essential component of animal and human epidemiological studies. Geographically localised communities and livestock production systems have a higher incidence of risk factors, and therefore baseline concentrations of key…

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