The effeclt of condensed tannins from Leucaena leucocephala （Lam.） and sodium lauryl sulfate （SLS） addition to basal diets of corn silage on nematode eggs and protozoa interaction in the rumen within Thai native x...The effeclt of condensed tannins from Leucaena leucocephala （Lam.） and sodium lauryl sulfate （SLS） addition to basal diets of corn silage on nematode eggs and protozoa interaction in the rumen within Thai native x Anglo-Nubian male goats was studied. Goats （n = 24 male; BW = 30 ＋ 2） were randomly considered toward treatment position into randomized complete block design （RCBD）. The treatments were： 1） Basal （B; 1.0-1.2 kg/head/day, corn silage）, 2） B ＋ SLS 8 g/head/day） 3） B ＋ 40g Leucaena/head/day （1.0% condensed tannins）, and 4） B ＋ 40g Leucaena/head/day （1.0% condensed tannins） with SLS 4 g/head/day）. These studies indicate that the action of 1.0% condensed tannins by Leucaena with 8 g SLS has the effect of increasing C3 （P 〈 0.05）. The opposite effect was observed for C2 which decreased （P 〈 0.05）. Both intestinal nematode eggs and protozoa in the rumen were reduced highly significantly （P 〈 0.01）. Bacteria population was raised （P 〈 0.01）. Nevertheless, all of these treatments did not affect intake, productive performances and blood urea nitrogen.展开更多
Eight goats of 7-8 months old and an average body weight （BW） of 20 ± 5.0 kg were used in double 4 × 4 Latin square design. The treatments were the four levels of leucaena meal replacement for soybean meal...Eight goats of 7-8 months old and an average body weight （BW） of 20 ± 5.0 kg were used in double 4 × 4 Latin square design. The treatments were the four levels of leucaena meal replacement for soybean meal in concentrates at 0%, 25%, 50% and 75% of crude protein. The results showed that roughage intake （% BW and g/kgBW^0.75） increased linearly （P 〈 0.01） with increasing levels of leucaena meal while total feed intake was not significantly different among dietary treatments. Similarly, dry matter, organic matter, neutral detergent fiber digestibility and ruminal ammonia nitrogen （NH3-N） were not significantly different among dietary treatments. However, crude protein digestibility, ruminal pH （6 hr after feeding）, nitrogen （N） intake, N absorption, N retention and total volatile fatty acids increased quadratically （P 〈 0.01） with the increasing levels of leucaena meals. It could be concluded that leucaena meal could replace up to 50% of soybean meal in the diet without any negative effect on feed intake, nutrient digestibility and rumen fermentation of meat goats.展开更多
文摘The effeclt of condensed tannins from Leucaena leucocephala （Lam.） and sodium lauryl sulfate （SLS） addition to basal diets of corn silage on nematode eggs and protozoa interaction in the rumen within Thai native x Anglo-Nubian male goats was studied. Goats （n = 24 male; BW = 30 ＋ 2） were randomly considered toward treatment position into randomized complete block design （RCBD）. The treatments were： 1） Basal （B; 1.0-1.2 kg/head/day, corn silage）, 2） B ＋ SLS 8 g/head/day） 3） B ＋ 40g Leucaena/head/day （1.0% condensed tannins）, and 4） B ＋ 40g Leucaena/head/day （1.0% condensed tannins） with SLS 4 g/head/day）. These studies indicate that the action of 1.0% condensed tannins by Leucaena with 8 g SLS has the effect of increasing C3 （P 〈 0.05）. The opposite effect was observed for C2 which decreased （P 〈 0.05）. Both intestinal nematode eggs and protozoa in the rumen were reduced highly significantly （P 〈 0.01）. Bacteria population was raised （P 〈 0.01）. Nevertheless, all of these treatments did not affect intake, productive performances and blood urea nitrogen.
文摘Eight goats of 7-8 months old and an average body weight （BW） of 20 ± 5.0 kg were used in double 4 × 4 Latin square design. The treatments were the four levels of leucaena meal replacement for soybean meal in concentrates at 0%, 25%, 50% and 75% of crude protein. The results showed that roughage intake （% BW and g/kgBW^0.75） increased linearly （P 〈 0.01） with increasing levels of leucaena meal while total feed intake was not significantly different among dietary treatments. Similarly, dry matter, organic matter, neutral detergent fiber digestibility and ruminal ammonia nitrogen （NH3-N） were not significantly different among dietary treatments. However, crude protein digestibility, ruminal pH （6 hr after feeding）, nitrogen （N） intake, N absorption, N retention and total volatile fatty acids increased quadratically （P 〈 0.01） with the increasing levels of leucaena meals. It could be concluded that leucaena meal could replace up to 50% of soybean meal in the diet without any negative effect on feed intake, nutrient digestibility and rumen fermentation of meat goats.
