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Intestinal digestibility of enriched-protein fodders measured by mobile bag incubated with or without pepsin-HCl and three-step techniques

  • 2013
  • Issue: 4
  • Volume: 43
P. Paengkoum, S. Traiyakun & S. Paengkoum Page: 511 - 518

Ruminal, intestinal and total tract digestibility of dry matter (DM) and crude protein (CP) of leucaena (Leucaena leucocephala), Madras thorn (Pithecellobium dulce) and moringa (Moringa oleifera) fodders were measured in this study, using nylon bag and mobile bag techniques. Three…

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Assessing the genetic diversity of five Tanzanian chicken ecotypes using molecular tools

  • 2013
  • Issue: 4
  • Volume: 43
C.M. Lyimo, A. Weigend, U. Janßen-Tapken, P.L. Msoffe, H. Simianer & S. Weigend Page: 499 - 510

The study aimed to evaluate the genetic diversity of Tanzanian chicken populations through phylogenetic relationship, and to trace the history of Tanzanian indigenous chickens. Five ecotypes of Tanzanian local chickens (Ching’wekwe, Kuchi, Morogoro-medium, Pemba and Unguja) from eight regions were…

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Association of polymorphism in Exon 3 of toll-like receptor 4 gene with somatic cell score and milk production traits in Holstein dairy cows of Iran

  • 2013
  • Issue: 4
  • Volume: 43
R. Noori, A.H. Mahdavi, M.A. Edriss, H.R. Rahmani, M. Talebi & M. Soltani-Ghombavani Page: 493 - 498

Mastitis is a complex inflammatory disease of the mammary gland that is caused by the invasion of pathogens. This leads to reduced synthetic capacity, compositional changes and increased somatic cell counts (SCC) in milk. Toll-like receptor 4 (TLR4) is a…

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Genetic diversity of four protected indigenous chicken breeds in China using microsatellite markers

  • 2013
  • Issue: 4
  • Volume: 43
Lin Wei, Bin Chen, Xiao-ying Li, Sheng-gui Liu & Jing-jing Wang Page: 464 - 472

The genetic diversity of four protected indigenous chicken breeds was evaluated with 25 microsatellite markers. Polymorphism information content (PIC), heterozygosity with the estimator of genetic differentiation FST and Nei’s genetic distance were evaluated. The results showed that these four protected…

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Direct greenhouse gas emissions of the game industry in South Africa

  • 2013
  • Issue: 3
  • Volume: 43
C.J.L. du Toit, H.H Meissner & W.A. van Niekerk Page: 376 - 393

Previous greenhouse gas (GHG) inventories did not include game as an emissions source. Recently game farming has become a recognized commercial enterprise in the agricultural sector in South Africa, contributing approximately R10 billion to the sectorial gross domestic product. The…

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Sustainability of the South African Livestock Sector towards 2050. Part 2: Challenges, changes and required implementations

  • 2013
  • Issue: 3
  • Volume: 43
H.H. Meissner, M.M. Scholtz & F.A. Engelbrecht Page: 298 - 319

Challenges facing the livestock sector towards 2050 and the changes and management considerations required to maintain sustainability are discussed. Major challenges are associated with climate change and the environmental impact of the sector. Southern Africa is predicted to become drier…

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The effect of dietary energy and the inclusion of a β-adrenergic agonist in the diet on the meat quality of feedlot lambs

  • 2013
  • Issue: 5
  • Volume: 43
T.S. Brand, M.P. Genis, L.C. Hoffman, W.F.J. van de Vyver, R. Swart & G.F. Jordaan Page: 140 - 145

β-adrenergic agonists are commonly used in livestock production to enhance meat production and decrease the fat content of the body. β-adrenergic agonists normally improve growth performance. Recent increases in meat prices and the change in consumer preference towards leaner meat…

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Effect of dietary fatty acid saturation on egg production at end-of-lay

  • 2013
  • Issue: 5
  • Volume: 43
G.C. Buitendach, F.H. de Witt, A. Hugo, H.J. van der Merwe & M.D. Fair Page: 126 - 130

This study was conducted to investigate the effects of dietary fatty acid saturation on production performances of laying hens at end-of-lay. Five isoenergetic (12.6 MJ AME/kg DM) and isonitrogenous (170 g CP/kg DM) diets were formulated using different lipid sources…

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