Birth Characteristics and Pre-Weaning Lamb Growth of Grazing Sudan Desert Ewes Supplemented in Different Reproductive Stages



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Submitted Nov 30, 2020
Published Feb 23, 2021
10.24018/ejfood.2021.3.1.189

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This work was conducted to study effect of supplementary feeding at different reproductive stages on birth characteristics and pre weaning growth performance of lamb born to desert sheep (Hamari subtype) raised on natural range in West Kordofan State, Sudan. Ninety ewes of similar age and live weight were used in the study. Ewes were divided into three feeding group of 30 animals each. Group A was given concentrate supplement for one month before mating, one month during mating, and one month before lambing; group B was given the supplement for one month during mating and one month before lambing, while group C was left as a control group kept on natural grazing. The concentrate diet consisted of sorghum grains 15 %, groundnut cake 20 %, molasses 15 %, wheat bran 25 %, groundnut hulls 23 %, salt 1 % and 1 % limestone, and was offered at a rate of 500 gm./ewe/day. All animals were allowed to graze on natural range and were watered every 2-3 days. The result indicated that birth weight in general and that of ram lambs was heavier in concentrate supplemented ewes. Although there was no significant difference between supplemented and grazing ewes on pre-weaning growth rate of their lambs yet lambs born to non-supplemented ewes had lower total live weight gain. It is recommended that feed supplementation and range improvement programs are needed as water harvesting and reseeding of range lands to reduce stress of long journies searching for water and forage, to improve productive performance of sheep and pre-weaning growth of their lambs.

Keywords: Supplementary feeding, pre weaning, growth performance, Hamari sheep, Sudan

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