Intake, growth and carcass yield of indigenous goats fed market wastes of sweet potato (Ipomoea batatas) vines and scarlet eggplant (Solanum aethiopicum)

Abstract

Intake, growth and carcass yield of indigenous goats fed basal diets of market wastes of sweet potato (Ipomoea batatas) vines (SPV) and scarlet eggplant (Solanum aethiopicum) (SEP) were examined in two experiments. In experiment I, the effect of presentation method (chopping, hanging or adding molasses) on the intake of SEP and SPV was evaluated. Presentation method did not influence the intake of SPV while hanging resulted in the highest (P < 0.05) intake of SEP. In experiment II, 24 male growing goats were supplemented with a concentrate (25% cottonseed cake +75% maize bran) in four dietary groups: SEPD, SPVD, SEP+SPV and Control where elephant grass (Pennisetum purpureum) was offered as the roughage. SEP were offered by hanging, while SPV were chopped. The goats were slaughtered after 12 weeks of feeding. Goats in the SEPD group constantly lost weight, hence were not followed to the end. Average daily gain and hot carcass weight were highest (P < 0.05) in the SPVD group (44 g/d and 8.4 kg, respectively), but similar between the SEP+SPV (19 and 6.8) and Control (21 and 6.9) groups. In conclusion, SPV can support goat meat production where standard feed resources are scarce when fed with an energy-protein concentrate. SEP are poorly consumed by goats, hence cannot be used as their sole basal feed.

Conventional and phenomics characterization provides insight into the diversity and relationships of hypervariable scarlet (Solanum aethiopicum L.) and gboma (S. macrocarpon L.) eggplant complexes

“…Scarlet and gboma eggplants are important vegetables in tropical sub-Saharan Africa but have received little attention from the formal breeding sector (Lester and Thitai, 1989; Schippers, 2000; Seck, 2000; Adeniji and Aloyce, 2012; Prohens et al, 2012). This has allowed the on-site conservation of a large number of local varieties which, together with accessions conserved in germplasm banks, represent genetic resources for the enhancement of both crops (Lester et al, 1990; Bukenya and Carasco, 1994; Schippers, 2000; Sekara et al, 2007).…”

“…The characterization data and the multivariate analysis performed may be useful to select a subset of accessions that represent most of the morphological diversity of both complexes. At the selection and breeding level, considerable phenotypic differences among and within groups may be used for selection of the best accessions or to select parents for obtaining F1 hybrids heterotic for yield or with intermediate or new characteristics (Lester and Thitai, 1989; Seck, 2000; Adeniji and Aloyce, 2012). …”

“…Hybrids between S. aethiopicum and S. anguivi Lam. are fully fertile (Lester and Niakan, 1986; Lester and Thitai, 1989). Solanum aethiopicum together with S. anguivi and their intermediate forms constitute the scarlet eggplant complex.…”

Potential use of byproducts from cultivation and processing of sweet potatoes

“…indicum), a low nutrient forage crop, sweet potato vines supported higher weight gains in goats than either the Batiki grass or the sweet potato vines alone (AREGHEORE, 2004). When supplemented with an energy-protein concentrate, sweet potato vines supported goat meat production and was reported to be particularly useful when feed was scarce (KATONGOLE et al, 2009). I leal and total tract digestibility studies on growing pigs indicated that sweet potato leaves can improve dietary protein and amino acid supply in pigs fed with a low fiber diet (AN et al, 2003).…”

4. Characteristics Of Some Potential Forages In Indonesia In Reducing Methane (Ch4) Emission From Ruminants: Benefits And Limitations

“…The effect of using recent forages for the small ruminant's productivity in Indonesia (Yulistiani, 2015) 30% of ration + ammoniated hay basal diet 75.4 g/h/d (Yulistiani et al, 2007) The highest body weight gain of the sheep is when using M.esculenta 30% as a supplement on the basal diet natural grass fed ad-libitum (Sirait and Simanuhuruk, 2010). Whereas to the goat is by feeding chopped sweet potato, mixed with concentrate, eggplants and P.purpureum (Katongole et al, 2009). However, it still requires further study on how efficient the formula is and whether or not it can be sustainable for the animals and the environment.…”