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Preface

Dorper sheep and Boer goat are two breeds indi-genous to South Africa that have brought much joy and welfare throughout the world. With these breeds' outstanding characteristics in terms of adaptability to various environments, hardiness, high fertility and, most importantly, superior growth rate and carcass quality, it is not surprising that a special issue ofSmall Ruminant Research is dedicated to report on these remarkable breeds of sheep and goats.

With the need world-wide to socially uplift and help especially the rural small-scale farmer, these animals create an opportunity to provide in a growing demand for animal protein. Whether it is extensive or under-intensive production system, the Dorper and Boer goat is ideal for the commercial and stud breeder. This issue is, thus, aimed at demonstrating the versatility and potential of these breeds, whether it is in temperate, the tropics or the semi-to-arid areas of the world. With this edition, an opportunity is created to condense a magnitude of multi-disciplinary information and make it available for researchers, producers and edu-cation and extension specialists Ð to the bene®t of all. This publication is hopefully the ®rst of a series of special issues to be periodically published bySmall Ruminant Research. The objective is to high-light

certain specialized areas or outstanding species that can contribute to creating sustainable animal produc-tion systems around the world.

Small Ruminant Research has already published numerous articles dealing with the Dorper sheep and Boer goats, abstracts of these articles are reprinted in this issue to add information not already included in the reviews.

The editors wish to thank the contributors to this special issue for their valuable contributions. They have provided state-of-the-art information in their respective specialization.

Dr. M.J. Fahmy

Agriculture and Agri-Food Canada Lennoxville Research Centre P.O. Box 90, Quebec Canada J1M 123

Prof. J.P.C. Greyling

Department of Animal Science University of the Free State P.O. Box 339, Bloemfontein 9300 South Africa

Small Ruminant Research 36 (2000) 97

Referensi

Dokumen terkait

Chemical composition of species or class of species and of the diet at the pasture of goats allowed to graze a Mediterranean scrubland for 7 h daily with (PEG50) or without (C)

Effects of levels of feed intake and inclusion of corn on rumen environment, nutrient digestibility, methane emission and energy and protein utilization by goats fed alfalfa

If an increase of milk yield is anticipated as a result of PEG-feeding, it is clear that the production system exploiting Mamber goats is more resilient to this new practice (as it

In contrast to this, De Waal and Biel (1989a) showed that less mature, lactating Dorper ewes and their lambs at Glen per- formed considerably better when grazing veld during the

The growth performance till weaning of hair- and wool-type Dorper lambs born and raised under exten- sive conditions (Snyman, 1998 ± unpublished) is compared in Table 9... The

There was a tendency for the mean serum progesterone concentra- tion in the early summer kidding group to be higher from 76 days (just prior to the natural breeding season)

As a consequence, the time required for collection was reduced and the proportion of embryos recovered from the ®rst 10 ¯ushes was increased, compared to the group treated 8 h

Oestrous cycles of all animals were synchronized in different treatment regimes, using intravaginal progestagen sponges impregnated with medroxy acetate progester- one (MAP),