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[Objective] The paper to investigate the effects of pelleted total mixed ration of different particle size on production performance and serum biochemical index of fattening Hainan black goats. [Method] Thirty-six fattening Hainan black goats with the same genetic backgrounds and similar initial weight of (19.02±0.22) kg were randomly divided into three treatments. Goats were fed with Juncao+concentrate (control group), pelleted total mixed ration I (particle size 6 mm, experimental group I) and II (particle size 5 mm, experimental group II), respectively. The trial lasted 45 d. [Result] (1) The final weight and daily gain of experimental group II were significantly higher than those of control group (P<0.05), and the daily gain of experimental group II was also higher than that of experimental group I (P<:0.05); the feed intake of experimental group II was markedly higher than that of control group (P<0.05), but was significantly lower than that of experimental group I (P<0.05). The feed/gain ratio of experimental group II was significantly lower than those of control group and experimental group I (P<0.05). (2) The feed gain cost of experimental group II was markedly lower than that of control group (P<0.05), but the gross profit was significantly higher than those of control group and experimental group I (P<0.05). (3) Compared with the control group, the serum total protein content of experimental group II increased markedly (P<0.05) while the urea nitrogen level decreased (P>0.05). [Conclusion] The pelleted total mixed ration with the particle size of 5 mm obtained better fattening effect, and obviously improved the serum total protein level. [ABSTRACT FROM AUTHOR]

[Objective] This paper was to study effects of pelleted total mixed ration with different concenlrate-roughage ratios on production performance and serum biochemical parameters of fattening Hainan black goats. [Method] Thirty-six fattening Hainan black goats with the same genetic background and similar initial weight of (14.08+0.13) kg were randomly assigned into three treatments. Goats were fed with Juncao + concentrate (control group), pelleted total mixed ration I (concentrate: roughage 50;50, group I) and II (concentrate: roughage 45;55, group II), respectively. The test lasted 45 d. [Result] The final weight, daily gain and feed intake of rams in experimental group 1 were significantly higher than those of control group and experimental group II (P<0.05); the final weight and daily gain of rains in experimental group I were also markedly higher than those of experimental group II (P<0.05); the feed/gain of rams in experimental group I was significantly lower than those in control group and experimental group If (P<0.05). The feed gain cost of rams in experimental group T was markedly lower than that in experimental group TT (P<0.05), but was significantly higher than that in experimental group 1 (P<0.05); the gross profit of rams in experimental group 1 wras significantly higher than those in control group and experimental group 11 (P<0.05). Compared with control group and experimental group 11, the serum total protein and glucose levels in experimental group 11 increased significantly (P<0.05), but the urea nitrogen content reduced (P>0.05). [Conclusion] When the concentrate-roughage ratio ol pelleted total mixed ration was 50:50, the fattening effect of Hainan black goal was better, and the serum total protein and glucose levels were evidently improved. [ABSTRACT FROM AUTHOR]

[Objective] The paper was to study the effects on growth performance and feed digestibility of Hainan black pigs by adding lysine in low protein diet. [Method] A total of 36 Hainan black pigs with the body weight of (46341306) kg were randomly divided into three groups: control group (protein level 15%, lysine level 0.83%), experimental group I (protein level 13%, 0.83%), and experimental group II (protein level 13%, lysine level 1.03), each group had three replicates of four pigs. The trial lasted 35 d. [Result] The growth performance of Hainan black pig in group [I had no significant difference with that in control group (P>0.05). The apparent digestibility of crude protein and phosphorus of Hainan black pigs in Group II increased significantly (P<0.05), which were increased by 10.08% and 11.85% respectively compared to the control group; the apparent digestibility of calcium was increased, but the difference was not significant (P>0.05). [Conclusion] It will not reduce the growth performance of Hainan black pig when the protein level of diet is reduced by 2% and the lysine level is increased to 1.03%. It is recommended that the diet can be used in the production of Hainan black pig. [ABSTRACT FROM AUTHOR]