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"Experientia docet" - Experience is the best teacher

Protease and phytase supplementation of broiler diets in which soybean meal is partially or completely replaced by raw full-fat soybean

  • 2019
  • Issue: 3
  • Volume: 49
M.M. Erdaw, R.A. Perez-Maldonado & P.A. Iji Page: 455 - 467

The nutrient composition and enzymatic in vitro nutrient digestibility of raw full-fat soybean (RFSB) were assessed prior to evaluating the influences of enzyme supplementation in diets in which commercial soybean meal (SBM) was partially (phase 1) or completely (phase 2)…

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Effects of hourly, daily and seasonal variation of hazardous gases and climatic factors on the welfare of sheep housed in solid-floor confinement barns

  • 2019
  • Issue: 3
  • Volume: 49
S. Uzal Seyfi & F. Ilhan Page: 441 - 454

Ambient air quality in livestock buildings is one of the most important factors affecting environmental pollution and global warming. Carbon dioxide (CO2), methane (CH4), ammonia (NH3) and hydrogen sulphide (H2S) are among the most hazardous gases in terms of human…

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Ractopamine-induced changes in the proteome of post-mortem beef longissimus lumborum muscle

  • 2019
  • Issue: 3
  • Volume: 49
H.M. Kim, S.P. Suman, S. Li, C.M. Beach, M.N. Nair, C. Zhai, B.M. Edenburn, T.L. Felix, A.C. Dilger & D.D. Boler Page: 424 - 431

Ractopamine is a beta-adrenergic agonist that is approved for use in beef cattle, pigs and turkeys as a repartitioning agent to increase lean muscle deposition and decrease lipogenesis. Although the effects of dietary ractopamine on the proteome profile of post-mortem…

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Carcass and meat quality attributes of Malawi Zebu steers fed Vachellia polyacantha leaves or Adansonia digitata seed as alternative protein sources to Glycine max

  • 2019
  • Issue: 2
  • Volume: 49
G. Chingala, E. Raffrenato, K. Dzama, L.C. Hoffman & C. Mapiye Page: 395 - 402

To enhance smallholder beef farmers’ capacity to cope with animal feed shortages, especially dietary protein induced by climate change, it is important to evaluate the feeding value of low-cost protein sources naturally available in the environment. The aim of the…

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Influence of season of birth, sex and paternal line on growth performance and carcass traits in pigs

  • 2019
  • Issue: 2
  • Volume: 49
J.H. Lee, M.H. Song, W. Yun, S.D. Liu, C.H. Lee, H.J. Oh, J.S. An, D.J. Yu, H.B. Kim & J.H. Cho Page: 371 - 378

Participants in the pig production industry focus on feed and feed additives to improve growth performance and meat quality of pigs. Consequently, the Rural Development Administration of the Republic of Korea produced a new paternal line to improve economic traits…

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Multi-trait genetic evaluation for horn traits of economic importance in the Cape buffalo (Syncerus caffer caffer)

  • 2019
  • Issue: 2
  • Volume: 49
A.A. Lepori, G.C. Josling, F.W.C. Neser, P.C. Lubout & J.B. van Wyk Page: 363 - 370

The wildlife industry in South Africa has shown immense growth since the 1990s, which was brought about by the private game segment of the industry. In recent years, trophy quality Cape buffalo breeding animals have achieved extremely high prices. Much…

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Effect of varying levels of dietary inclusion of sweet lupin on the growth production characteristics of ostriches (Struthio camelus var. domesticus)

  • 2019
  • Issue: 2
  • Volume: 49
T.S. Brand, J.A. Engelbrecht, J. van der Merwe & L.C. Hoffman Page: 345 - 362

Nutrition contributes approximately 75% of the total input costs to an intensive ostrich production unit. An increase in the price of traditional protein sources thus necessitates finding cheaper alternatives. Sweet lupins were identified as a possible alternative; therefore, the effect…

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Effects of dietary inclusion of commercial toxin binders and prebiotics on performance and immune responses of broiler chicks fed aflatoxin-contaminated diets

  • 2019
  • Issue: 2
  • Volume: 49
D. Mohseni Soltani, H. Aghdam Shahryar, S.A. Hosseini, Y. Ebrahimnezhad & A. Aghashahi Page: 322 - 331

This study aimed to evaluate the efficiency of the dietary inclusion of commercial toxin binders (CTs) and prebiotics on growth performance, immune responses, intestinal morphology and blood variables of broiler chicks fed with aflatoxin and non-aflatoxin-contaminated diets. Six hundred one-day-old…

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Effects of processed recycled poultry bedding with tannins extracted from pomegranate peel on the nutrient digestibility and growth performance of lambs

  • 2019
  • Issue: 2
  • Volume: 49
A. Sharifi & M. Chaji Page: 290 - 300

The aim of this experiment was to decrease the rumen degradability rate of recycled poultry bedding (RPB) protein using pomegranate peel extract (PPE) as the tannin source. Furthermore, to study the effects of this processing method on nutrient digestibility, rumen…

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Genetic variability in a population of Letelle sheep in South Africa

  • 2019
  • Issue: 2
  • Volume: 49
L. van der Westhuizen, T. Magwaba, J.P Grobler, H. Bindeman, C. du Plessis, E. van Marle-Köster & F.W.C. Neser Page: 281 - 289

The purpose of the study was to gain insight into the genetic variability of the Letelle sheep breed, a breed that has been managed as a closed population for 90 years, with no new genetic material being permitted into the…

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Genotype imputation as a cost-saving genomic strategy for South African Sanga cattle: A review

  • 2019
  • Issue: 2
  • Volume: 49
S.F. Lashmar, F.C. Muchadeyi & C. Visser Page: 262 - 280
The South African beef cattle population is heterogeneous and consists of a variety of breeds, production systems and breeding goals. Indigenous cattle breeds are uniquely adapted to their native surroundings, necessitating conservation of these breeds as usable genetic resources to…
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