Browsing by Author "Muhikambele, V.R.M."
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Item Comparative analysis of partial suckling and artificial dairy kid rearing systems(2005) Selejio, O.; Muhikambele, V.R.M.; Ndemanisho, E.E.; Mushi, D.E.Forty kids aged 1 - 1.5 months and weighing 2.5 - 8 kg were randomly allocated to two: treatments, treatment. 1 (Bucket feeding system, BFS) and treatment 2 (partial suckling system, PSS). One half (10 males, 10 females) was allocated to BFS and the other half to PSS. Breed composition of the experimental animal was 20 kids Norwegian x local crosses and 20 Galla goats. The BFS does were milked twice per day (06: 30 h and 16: 30 h) while PSS does were milked only once per day (16:30 h). Milk yield and surplus (marketable) milk were measured daily for 9 weeks of lactation and kids were weighed weekly during the same period. BFS does produced significantly (P<0.05) higher milk yield (414.96 ± 13.48 g/day) than PSS does (179.23 ± 84.24 g/day. Considering surplus milk, PSS does produced significantly (P<0.05) higher than BFS does which could not even produce enough to feed their kids. The study also showed that crossbred does gave significantly (P<0.01) higher daily milk yield and surplus milk in each treatment compared with Galla does. The kids under PSS had a significantly (P<0.01) better growth rate (42.34 ± 5.46 g/day) than BFS kids (3.92 ± 8.02 g/day) and crossbred kids grew significantly (P<0.05) better (40.09 ± 6.63 g/day) than Galla kids (6.17 ± 7.09g/day). The Gross Margin Analysis (GMA) showed that PSS has a higher gross margin (Shs. 46, 024.9) than BFS (Shs. - 153,825.20). It was concluded that PSS is a better system in terms of surplus (marketable) milk and growth of kids compared with BFS.Item Developmental changes of fat depots-in male Saanen goats(2005) Mtenga, L.A.; Owen, E.; Muhikambele, V.R.M.; Kifaro, G.C.Thirty-four male British Saanen goats were reared on milk substitutes from birth to weaning at 35 days and then given barley-based concentrate diet ad libitum. They were slaughtered serially at birth (3.5 kg), weaning (9.5 kg), 24.5,36.5, 48.5 and 72.5 kg live weights. Weights of fat depots were recorded. With the exception of channel fat, all fat depots increased significantly (P< 0.001) with increasing slaughter weight. Fat growth coeffients were greater than 1 (P<0.001) and was highest for subcutaneous fat (1.887), followed by gut fat (1.802), dissected fat I. 687), inter-muscular fat I.6I9) and lowest for channel fat I.I27). Relative to total fat, the greatest change in proportion of fat occurred between birth and 24.5 kg of live, weight. There were little consistent changes in proportion of subcutaneous fat relative to change in lotal body fatItem Effect of level of inclusion of lablab meal in diet on carcass characteristic of Blackhead Persian Sheep(1998) Muhikambele, V.R.M.; Mtenga, L.A.; Mafwere, W.D.Twenty four Black Head Persian (BHP) castrate lambs weighing 14.1 ± 2.7 kg were randomly allotted to four dietary treatments . Animals on treatment A (control) were fed Rhodes (Chloris gayana) hay, ad libitum as basal diet, plus 3BO-g maize bran daily. Animals on treatments B, C and D were fed 'basal diet plus 3BO g of "maize bran and lablab meal" mixture at a ratio of 2.B:1, 0.9:1 and 0.27:1, respectively daily. Four animals from each treatment were selected for slaughter at the end of 99th day of feeding. The level of inclusion of lablab in the lambs' diet had no significant effect on all killing-out characteristics. However, the increase in dietary lablab level in supplement increased the hot carcass weight (HCW) and empty body weight (EBW). The mean HCWfortreatmentsA, B, C, andD were B.O, B.B, 9.2 and 9. 7 kg, respectively, while the respective mean EBWs were 15.3, 16.9, 17.B and 1B.2 kg. Dressing percentage showed no definite pattern. Regression of HCW on EBW and on slaughter weight showed high correlation coefficients (r = 0.91 and r = 0.90, respectively). Lean tissue weight increased with increasing lablab level in the supplement diet, while fat tissue decreased with increased dietary lablab levels (P < 0.10). Differences among treatments in carcass fat were however small and statistically non-significant. Although bone tissue did not show any defined trend, animals on treatment Chad heavier (B30 vs 716 g) carcass bone than animals on treatment A (P< 0.10). Expr,essed as percentages of the carcass, the weights of lean, fat and bone showed no significant treatment effects. However, the trend was an increase in percentage of lean tissue and a decrease in percentage offat tissue with increasing level of lablab in the supplement diet (60.9,51.3, 61.1 and 63% lean and 19.1,20.2, 1B.4and 17.5%fat,for treatments A, B, C and D, respectively).Item Effects of substituting sunflower seed cake with Acacia tortilis pods as protein source in supplementary diets of Small East African goats(2002) Ntakwendela, L.; Mtenga, L.A.; Pereka, A.E.; Chenyambuga, S.W.; Laswai, G.H.; Kimambo, A.E.; Muhikambele, V.R.M.A study was undertaken to avaluate the effects of substituting sunflower seed cake with Acacia tortilis pods as a protein source in supplementing Small East African goats fed a basal diet of Brachiaria brizantha hay. Twenty-four growing female goats with mean body weight of 9. 71 = 1.56 kg were used in a growth experiment. Twelve adult bucks were used in a digestibility experiment. In the growth experiment the animals were divided into four groups, each with six animals, while for the digestibility experiment the animals were divided into four groups, each with three animals. These groups were randomly assigned to four supplementary diets containing different proportion of sunflower seed cake and Acacia tortilis pods. In treatments one (T1). two (T2); three (T3) and four (T4) sunflower seed cake was replaced with Acacia tortilis pods at levels of 0.0%, 3.33%, 66.7% and 100%, respectively. The intake of hay and total DM tended to increase with increasing levels of Acacia tortilts pods in the supplementary diet, the highest intake (430 g DM/day) was observed in goats offered supplementary diet T4. The CP intake (49.1 to 58.9g/day) did not differ significantly (P>0. 0.5). among the treatments. The intake of ME was significantly (P<0. 05) lower (3.0 MJ) for animals in T1 than those in T4 (3:7 MJ). In the digestibility trial, no significant (P>0.05) effect on apparent digestibility of DM, OM, CP and NDF on nitrogen utilisation was observed between treatments. In the growth trail, significant (P<0.05) lower growth rate was observed in animals under T1 (20g/day) than those in T3 (32g/day) and T4 (32g/day). Similarly the feed utilisation efficiency for animals in T1 (FCR=18.5) was significantly (p<0.05) lower than those of the animals in T3 (FCR=13.1) and T4 (FCR=13. 5). Replacement of sunflower seed cake with Acacia tortilis pods in the supplementary diets at the level of 66.7% and 100% gave the highest hay and total DM intake, daily live weight gain and feed utilisation efficiency. Therefore, Acacia tortilis pods may be used in place of high cost oil cakes in the feeding of goats.Item Muscle distribution in farm animals: comparison between goats and other farm animals(1998) Mtenga, L. A.; Owen, E.; Muhikambele, V.R.M.Eight,male goats w,ere 'slaf.lghtered at. 36 kg, live weight (approximately two thirds of mature weight) and dissected, into individual anatomic m'((s(;les. Weights of individual muscles were then grouped into 8 functional units and compared with published data on bulls, rams and boars.' There was a wide species d(tference;in "size index'~ musGles..· Abdominal wall index was highest !'n boars followed by goats, bulls and'rams, the values being 108, 1.00, 91 m:zd 90 resp.ectivety. 9,o(lts had. higher i!ldices ill four;functional units: agility, locomotion, supporting muscles 'and specialised funCtionai mu~cles.· Muscle data .. o/ goa~s indicated that goats are most aggressive followed by bulls, rams and pigs.