Supplementary effect of Sweet Potato (Ipomoea batatas) Silage on Growth Performance and Carcass Traits of Local Lambs Grazing Natural Pasture in Tembaro District, Southern Ethiopia

DOI: 10.22161/ijaers/3.10.23

Keyword: Sweet Potato Silage, Grazing lambs, Supplementation, Carcass traits.

Abstract: Effect of supplementing Hawassi-83 sweet potato silage (SPS) containing 70% vine and 30% tuber on growth performance and carcass traits of grazing lambs were evaluated through on-farm feeding trial in Tembaro district, SNNPR, Ethiopia. Treatment diets formulated were: T1= grazing alone; T2, T3 and T4 were grazing plus SPS supplemented (DM basis) at 1, 2 and 4% of lamb’s body weight, respectively. At the age of 120 days after planting, vine cuttings were harvested at 3 cm above the ground and wilted under sunlight for 12 hrs. The tubers and vines were then chopped and mixed at the ratio of 70%:30% ( vine:tuber) and put in an air tight linen sack lined with plastic sheet, compacted with wooden stick, tightened with a rope and covered with plastic sheet to ensure anaerobic fermentation and ensiled for 30 days. Samples of natural pasture (NP) from the grazing area were harvested at the beginning and end of the trial. Five lambs (5-6 month-old; 14.3±0.5kg) were randomly assigned to each of the four treatment diets and fed for 84 days. Crude protein content of SPS was 14.07% and that of the NP at the beginning and end of the trial were 10.73 and 8.13%, respectively; and in-vitro DM digestibility of SPS was 84.74% and that of NP at the beginning and end of the trial were 65.4 and 51.77%, respectively. The DM intakes of lambs significantly (p<0.05) increased from 151.4 to 620.2g/head/d as the level of supplementation increased from T2 to T4. Average daily body weight gain (36.7, 60.5, 87.1 and 119.5 g/head/d) among treatments (T1

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Tegene Negesse, Gebremariam Gebremichael, Mohammed Beyan et al."Supplementary effect of Sweet Potato (Ipomoea batatas) Silage on Growth Performance and Carcass Traits of Local Lambs Grazing Natural Pasture in Tembaro District, Southern Ethiopia". International Journal of Environment Agriculture and Biotechnology(ISSN: 2456-1878),vol 1, no. 3, 2016, pp.457-465 AI Publications doi:10.22161/ijaers/3.10.23

Tegene Negesse, Gebremariam Gebremichael, Mohammed Beyan, P.(2016).Supplementary effect of Sweet Potato (Ipomoea batatas) Silage on Growth Performance and Carcass Traits of Local Lambs Grazing Natural Pasture in Tembaro District, Southern Ethiopia. International Journal of Environment Agriculture and Biotechnology(ISSN: 2456-1878).1(3), 457-465.10.22161/ijaers/3.10.23

Tegene Negesse, Gebremariam Gebremichael, Mohammed Beyan, P.(2016).Supplementary effect of Sweet Potato (Ipomoea batatas) Silage on Growth Performance and Carcass Traits of Local Lambs Grazing Natural Pasture in Tembaro District, Southern Ethiopia. International Journal of Environment Agriculture and Biotechnology(ISSN: 2456-1878).1(3), pp.457-465.

Tegene Negesse, Gebremariam Gebremichael, Mohammed Beyan. 2016."Supplementary effect of Sweet Potato (Ipomoea batatas) Silage on Growth Performance and Carcass Traits of Local Lambs Grazing Natural Pasture in Tembaro District, Southern Ethiopia". International Journal of Environment Agriculture and Biotechnology(ISSN: 2456-1878).1(3):457-465.Doi:10.22161/ijaers/3.10.23

Tegene Negesse, Gebremariam Gebremichael, Mohammed Beyan."Supplementary effect of Sweet Potato (Ipomoea batatas) Silage on Growth Performance and Carcass Traits of Local Lambs Grazing Natural Pasture in Tembaro District, Southern Ethiopia", International Journal of Environment Agriculture and Biotechnology,vol.1,no. 3, pp.457-465,2016.

@article { tegenenegesse2016supplementary,
title={Supplementary effect of Sweet Potato (Ipomoea batatas) Silage on Growth Performance and Carcass Traits of Local Lambs Grazing Natural Pasture in Tembaro District, Southern Ethiopia},
author={Tegene Negesse, Gebremariam Gebremichael, Mohammed Beyan , R},
journal={International Journal of Environment Agriculture and Biotechnology},
volume={1},
year= {2016} ,
}