Tilapia nilotica were used as experiment objects in this study and their initial body weight was(106.16±16.77)g. Wheat basal diet was set as control. Tested diets were wheat basal diet mixed with different levels of xylanase(0.05%,0.10%,and 0.15%).
In the growth trial,720 juvenile Jian carps(Cyprinus carpio var.jian) with initial body weight of(10.29±0.10)g were averagely allocated to 5 groups with 3 replications each,fed isonitrogenous(330.0 g·kg-1diet) diets with white fish meal protein replaced by 0,25%,50%,75% and 100% dehulled soybean meal(DSBM) protein for 9 weeks,respectively.
The results showed that the requirement dose of lysine in feedstuff was 1.61% which was determined by the results of the maximum of growth rates,and the requirement dose of lysine in feedstuff were 1.28%,1.46% and 1.49% which were determined by the results of free lysine levels of serum,liver and muscle respectively.
The results showed that comparing with commodity fish feedstuff,probioticsⅠand probioticsⅡrespectively increased weight 9.4 % and 7.2 %,decreased ratio of feed and gain 5.6 % and 4.1 %. The difference is extremely remarkable(P < 0.01).
The influence factors of the synthesis were discussed, and the best reaction conditions were found: the molar ratio of n-butyraldehyde to 1,2-propanediol is 1:1.5, the amount of catalyst used is 1.2% of feed stock, and the reaction time is 1.0 h.
It was found that the content of AGE in the copolymer increases with the increase in monomer conversion and molar faction of the AGE in the monomer feed.
However, the polymerization could slow down when the fraction of AGE increases in the monomer feed.
A feed rate self-adjusting method was proposed to uniform the grinding speed with the changes of sectional curvature.
Implementation of an adaptive feed speed 3D NURBS interpolation algorithm
Chinese Early Cretaceous birds had experienced a significant differentiation in morphology, flight, diet and habitat.
For each test group, 20 loaches with similar body size (5.17-7.99 g; 11.79-13.21 cm) were selected and kept in aquaria with dechlorinated water at (22±1)°C and fed a commercial diet every 48 h.
Diet composition of post-metamorphic bullfrogs (Rana catesbeiana) in the Zhoushan archipelago, Zhejiang Province, China
The analysis of the stomach contents shows that, for adult bullfrogs, the most important prey (by diet volume) overall were Decapoda, Coleoptera, Odonata, Mesogastropoda, Raniformes, and Cypriniformes.
Moreover, the prey size and diet volume increased with the body size of both adult and juvenile bullfrogs.
Liquid Chromatography-Mass Spectrometry Determination of Six 5-Nitroimidazoles in Animal Feedstuff
A liquid chromatography-mass spectrometry method for the determination of the coccidiostats metronidazole, ronidazole, dimetridazole, secnidazole, tinidazole and ipronidazole in feedstuff was developed.
The method was applied successfully to determine 5-nitroimidazoles in feedstuff at level of 0.05?mg?kg-1.
Addition of the calculated amounts of sodium selenite directly to the feedstuff instead to mineral premix was the cause of this intoxication.
The objective of the reported study was to assess the abilities of various methods to differentiate the sources of fats used in feedstuff formulations.
In the control, the rodents were allowed to select any of three feeds: protein-rich, protein-free with low cellulose content, and protein-free with high cellulose content.
In low-concentrated solutions, this deceleration results from a decrease in the flow that feeds the droplet, while in high-concentrated solutions, it is due to a droplet constriction and an increase in its curvature radius.
The scanner feeds the tip to the sample at a distance of up to 3 mm and positions it in the sample plane on a 4 × 4-mm area.
Voltammetric Determination of Riboflavin in Vitaminized Supplements and Feeds
Conditions for determining vitamin B2by stripping voltammetry were found, and a procedure was developed for measuring the mass concentration of vitamin B2in vitaminized supplements and feeds.