(2)Obvious improving the production performance,the laying rate is increased by 8. 57%,the egg weight by 1 % and the feed conversion rate by 6. 42% (P>0.05).
The trial results showed that when 100 mg/kg and 150 mg/kg diludine were added, the daily gain and feed conversion rate were increased significantly (P<0.05);
The results showed that the trial group increased average daily gain(ADG) by 6.53 %(P<0.05),feed conversion efficiency by 7.25 %(P<0.05)and apparent digestibility of crude protein(CP)by 5.76 %(P<0.05)compared with the control groupⅡ.
The results indicated that weight gain (P<0. 05),feed conversion efficiency (P<0. 05～0.01 ), energy availability(P<0. 05～0. 01 )and crude protein availability (P<0. 05)increased significantly when 20～80 mg·kg-1 rare-earth elements were added into the basal ration.
In experiment Ⅱand experiment Ⅲ,both were ISA Brown hens with additive compound in the diet in a propor- tion of 1%,the laying rate was increased 9.37%(P<0.01)and 4.64%(P<0.05),the feed conversion efficiency increased 7.41% and 5.54% respectively.
The results showed that compared wi th control group,the test group increased daily gain by 22.41% extremely signi ficantly (P<0.01) and improved feed conversion efficiency by 17.37% significan tly (P<0.05),furthermore death rate was decreased by 6.66% (P<0.05). The economi c benefits were evident at the whole experimentation period.
Laying rate (83.93%) and feed conversion efficiency (43.64%) of the fifth group hens were the highest (p<0.01), and increased by 6.36% (p<0.05) and 5.77% (p<0.05), respectively, as compared with the first group (laying rate: 78 91%; feed conversion efficiency: 41.26%).
and the mean feed efficiency and survival rate were 2.02∶1 and 98.3% which were 10.62% and 13.3% higher than those 2.26∶1 and 85.0% of the control respectively.
New Zealand White rabbits,50 days old,affected by dietary Carbadox supplementation (0 .0 1‰ ,0 .0 2‰ and 0 .0 3‰ ) ,were used to study growth traits and feed efficiency.
the feed efficiency had no significant difference between ME levels(P>0.05), but the feed efficiency of 21.0% and 19.0% CP levels was significantly higher than that of 17.0% CP levels(P<0.05).
Feed efficiency of 12.12 MJ/kg ME was higher than that of 12.54 MJ/kg ME(P<0.05); the difference of feed efficiency between CP levels was not significant(P>0.05).
The results showed that the trial group increased average daily gain(ADG) by 6.53 %(P<0.05),feed conversion efficiency by 7.25 %(P<0.05)and apparent digestibility of crude protein(CP)by 5.76 %(P<0.05)compared with the control groupⅡ.
The results of feeding experiment showed:(1) In comparison with the control group,the daily gain of the growing pigs was significantly increased by 6.90%(P<0.05) and the feed conversion was increased 6.73%(P<0.05).
The influence of oral intake of an antibiotic (Norfloxacin?) through mulberry leaf at two concentrations (50 and 100 ppm) on the feed conversion efficiency parameters of silkworm hybrids, viz.
Most of the feed conversion efficiency parameters related to digesta, such as efficiency of digested food into larvae, cocoon and shell were not significantly different between the control and the treated batches.
These results showed that approximately 23% of fish meal protein could be replaced by a mixture of animal by-products for juvenile snapper growing from 30 g to 167 g in 75 d without compromising growth performance and feed efficiency.
The purpose of our work was to observe the influence of probiotic preparation BioPlus 2B on average daily gains of weaned pigs, feed efficiency and to evaluate some metabolic indices.
Average daily gain was increased (P>amp;lt;0.05) by addition of 75, 150, and 300 ppb Cr and feed efficiency was increased (P>amp;lt;0.05) by supplementation of 75, 300, and 450 ppb Cr.
Five economic traits were investigated, including number of born alive (NBA), average daily gain to 100 kg body weight (ADG), feed conversion ratio (FCR), back fat at 100 kg body weight (BF) and intramuscular fat (IMF).
饲料转化率
feed conversion rate
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