Poultry Sayuni
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- Sep 6, 2011
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LAT
Lucina (Leucaena) ninayosema ni tofauti na hiyo. jaribu ku-google uone
"Animal production
Leucaena is well known for its high nutritional value and for the similarity of its chemical composition with that of alfalfa (Table 2.1.3). However, leucaena forage can be low in sodium and iodine, but is high in b -carotene. Tannins in the leaves and especially the stems of leucaena reduce the digestibility of dry matter and protein but enhance the 'bypass' value of protein.
Digestibility and intake values for leucaena range from 50 to 71% and from 58 to 85 g/kg[SUP]0.75[/SUP] liveweight respectively (Jones 1979). The lower values were suggested by Jones (1979) to-be associated with the effects of mimosine on intake when pure diets of leucaena were fed.
Animal production on leucaena based pastures is excellent. In southeast Queensland, cattle on leucaena/setaria pastures gained between 310 and 430 kg liveweight/ha, approximately twice that obtained from siratro (Macroptilium atropurpureum)based pastures in the same environment (Jones and Jones 1984). In low frost environments, leucaena foliage can be heldover for feeding in the cool or dry season providing valuable high protein feed during stress periods for grazing ruminants. Under ideal growing conditions under irrigation on the fertile alluvial plains of the Ord River valley, leucaena/pangola (Digitaria decumbens)pastures produced annual liveweight gains of 273 kg/head or 1422 kg/ha at a stocking rate of 6 weaner steers/ha (Davison 1987). In central Queensland, on fertile clay soils, cattle are gaining 300 kg liveweight per head per year on leucaena pastures.
Table 2.1.3. Comparative compositions of alfalfa (Medicago saliva)and Malawi-grown leucaena (NAS 1977).
Lucina (Leucaena) ninayosema ni tofauti na hiyo. jaribu ku-google uone
"Animal production
Leucaena is well known for its high nutritional value and for the similarity of its chemical composition with that of alfalfa (Table 2.1.3). However, leucaena forage can be low in sodium and iodine, but is high in b -carotene. Tannins in the leaves and especially the stems of leucaena reduce the digestibility of dry matter and protein but enhance the 'bypass' value of protein.
Digestibility and intake values for leucaena range from 50 to 71% and from 58 to 85 g/kg[SUP]0.75[/SUP] liveweight respectively (Jones 1979). The lower values were suggested by Jones (1979) to-be associated with the effects of mimosine on intake when pure diets of leucaena were fed.
Animal production on leucaena based pastures is excellent. In southeast Queensland, cattle on leucaena/setaria pastures gained between 310 and 430 kg liveweight/ha, approximately twice that obtained from siratro (Macroptilium atropurpureum)based pastures in the same environment (Jones and Jones 1984). In low frost environments, leucaena foliage can be heldover for feeding in the cool or dry season providing valuable high protein feed during stress periods for grazing ruminants. Under ideal growing conditions under irrigation on the fertile alluvial plains of the Ord River valley, leucaena/pangola (Digitaria decumbens)pastures produced annual liveweight gains of 273 kg/head or 1422 kg/ha at a stocking rate of 6 weaner steers/ha (Davison 1987). In central Queensland, on fertile clay soils, cattle are gaining 300 kg liveweight per head per year on leucaena pastures.
Table 2.1.3. Comparative compositions of alfalfa (Medicago saliva)and Malawi-grown leucaena (NAS 1977).
(a) General compositor | Leucaena leaf | Alfalfa leaf |
Total ash (%) | 11.0 | 16.6 |
Total N (%) | 4.2 | 4.3 |
Crude protein (%) | 25.9 | 26.9 |
Modified-acid-detergent fibre (%) | 20.4 | 21.7 |
Calcium (%) | 2.36 | 3.15 |
Phosphorus (%) | 0.23 | 0.36 |
b -carotene (mg/kg) | 536.0 | 253.0 |
Gross energy (kJ/g) | 20.1 | 18.5 |
Tannin (mg/g) | 10.15 | 0.13 |
(b) Amino acid | Leucaena | Alfalfa |
Arginine (mg/gN) | 294 | 357 |
Cysteine (mg/gN) | 88 | 77 |
Histidine (mg/gN) | 125 | 139 |
Isoleucine (mg/gN) | 563 | 290 |
Leucine (mg/gN) | 469 | 494 |
Lysine (mg/gN) | 313 | 368 |
Methionine (mg/gN) | 100 | 96 |
Methionine + cysteine (mg/gN) | 188 | 173 |
Phenylalanine (mg/gN) | 294 | 307 |
Threonine (mg/gN) | 231 | 290 |
Tyrosine (mg/gN) | 263 | 232 |
Valine (mg/gN) | 338 | 356 |