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"Experientia docet" - Experience is the best teacher

The determination of digestibility of Atriplex nummularia cv. De Kock (Oldman’s Saltbush) using different in vitro techniques

  • 2004
  • Issue: 5
  • Volume: 34
A. van der Baan, W.A. van Niekerk, N.F.G. Rethman and R.J. Coertze Page: 95 - 97

The main disadvantages of the rumen fluid in vitro technique are the cost and welfare issues of keeping cannulated animals. The purpose of the study was to find an accurate alternative in vitro technique to determine organic matter digestibility (OMD)…

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Comparison of the thermostability and efficacy of a solid-substrate culture and a liquid culture phytase in broiler chickens

  • 2004
  • Issue: 4
  • Volume: 34
J.P. Driver, J.L. Pierce, J.H. Harter-Dennis, J. Timmons and N.H. Casey Page: 249 - 256

A 14-day battery trial using 336 four-day old male broilers was undertaken to compare the thermostability and efficacy of phytase produced in solid-substrate culture, a Solid Substrate Enzyme Product (SSEP), with phytase produced in liquid culture, a Liquid Enzyme Product…

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Genetic variance components for residual feed intake and feed conversion ratio and their correlations with other production trai

  • 2004
  • Issue: 4
  • Volume: 34
R.R. van der Westhuizen, J. van der Westhuizen and S.J. Schoeman Page: 257 - 264

Feeding costs of animals is a major determinant of profitability in livestock production enterprises. Genetic selection to improve feed efficiency aims to reduce feeding cost in beef cattle and thereby improve profitability. This study estimated genetic (co)variances between weaning weight…

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Description of the Friesian Horse population of South Africa and Namibia

  • 2004
  • Issue: 3
  • Volume: 34
S.M. Pretorius, E. van Marle-Köster and B.E. Mostert Page: 149 - 157

Data obtained from the Friesian Horse Studbook of Southern Africa and Friesian Horse Breeders’ Society of South Africa were analyzed to describe and evaluate the population regarding inbreeding and morphological body measurements. Eight different body measurements (height at withers, height…

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Growth, feedlot performance and carcass characteristics of Karakas and crossbred lambs (F1) (Ile de France x Akkaraman (G1) x Ka

  • 2004
  • Issue: 4
  • Volume: 34
O. Gokdal, H. Ulker, F. Karakus, F. Cengiz, C. Temur and H. Handil Page: 223 - 132

In this study the possibilities of using the Ile de France x Akkaraman (G1) genotype (IDFAG1) in improving the growth performance and carcass characteristics of fat-tailed Karakas sheep raised in rural farm conditions in the Van Region of Eastern Anatolia,…

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Comparison between in situ dry matter degradation and in vitro gas production of tannin-containing leaves from four tree species

  • 2004
  • Issue: 4
  • Volume: 34
A. Kamalak, O. Canbolat and Y. Gurbuz Page: 233 - 240

Dry matter (DM) degradation of Glycrrhiza glabra L, Arbutus andrachne, Juniperus communis, and Pistica lentiscus was determined using two different techniques: (i) the in vitro gas production and (ii) the in situ nylon bag degradability technique. Samples were incubated in…

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The influence of stocking rate and male:female ratio on the production of breeding ostriches (Struthio camelus spp.) under comme

  • 2004
  • Issue: 2
  • Volume: 34
H. Lambrechts, D. Swart, S.W.P. Cloete, J.P.C. Greyling and S.J. van Schalkwyk Page: 87 - 96

The study provides information on the reproductive performance of ostriches maintained at different stocking rates and male:female (M:F) ratios under intensive commercial conditions in the Little Karoo, South Africa. Breeding ostriches are concentrated on relatively small areas and through trampling…

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A random regression model in analysis of litter size in pigs

  • 2004
  • Issue: 4
  • Volume: 34
Z. Lukovic, S. Malovrh, G. Gorjanc and M. Kovac¨ Page: 241 - 248

Dispersion parameters for number of piglets born alive (NBA) were estimated using a random regression model (RRM). Two data sets of litter records from the Nemscak farm in Slovenia were used for analyses. The first dataset (DS1) included records from…

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Relative performance and efficiency of five Merino and Merino-type dam lines in a terminal crossbreeding system with Dormer or S

  • 2004
  • Issue: 3
  • Volume: 34
S.W.P. Cloete, J.J.E. Cloete, M.J. Herselman and L.C. Hoffman Page: 135 - 143

The production performance of ewes was assessed in a terminal crossbreeding experiment involving five Merino and Merino-type dam lines and two terminal crossbreeding sire breeds. Dam lines were SA Mutton Merino (SAMM), SAMM rams crossed to Merino ewes (SAMM cross),…

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