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Different digestion methods on determination of crude protein in feed value of

Semi-micro distillation method. Results and discussion 1.4 2 2.1 Titration of crude protein content of different products, the measured results of feed for fish feed, pig concentrates, the 6 piglets feed crude protein samples were digested by two methods after digestion determination, l0 times were measured to determine the results below. Zhong 1, crude protein content of different feed products can be seen from the measured results for different feed protein content (CP18% ~ 41%) of the feed products, the national standard method detected by the crude protein content of concentrated sulfuric acid, hydrogen peroxide Law of the crude protein content measured 2, 2006 Liuzhong Chen Li Shuxun Wang Xiuzhen Jiangxi feed livestock in China's foreign trade. Broiler exports have become the most sensitive issue in animal husbandry. China's broiler exports in influencing many factors. In addition to the international market supply and demand constraints outside. Due to disease, drug residues and production of standard broiler exports and other factors have been prominent contradictions. The drug residues in broiler production to become a difficult problem to solve. Broiler exports blocked in China in recent years. The main reason is that drug residues do not meet the standards of the importing country. Broiler breeders out of economic interests, not in accordance with the standard addition of drug. When drugs and chemicals with the feed water into the chicken body, or from the air inhaled by the chicken, the chicken would have residues in produce. Therefore,[link widoczny dla zalogowanych], we must use good husbandry management, from production to control all aspects of the occurrence of drug residues. The following briefly describes the control of broiler production a few residues of the basic rules, farmers hope to benefit. Rule one: a deliberate choice to a chicken farm site to higher ground, easily drained sunny flat or slightly sloping ground is ideal. Soil at the site requested is not infectious or parasitic disease pathogen contamination. Permeability permeable good performance, to maintain the site dry. Sufficient water, good water quality and meet the requirements of GB5749. Quiet surroundings, away from downtown, and heavy industry, to promote decentralized construction field, should not engage in intensive farming community. Location to avoid low-lying farm land and col cavity damp buildings. If you choose to slope, the slope shall not exceed 10% is appropriate, otherwise it will cause any inconvenience or increased investment in management. Gutter should be lower than the road, and try to make it hard to deal with (such as brick, concrete structure), thus effectively control water leakage caused secondary pollution. Coop choice not only on the entire region in the limelight. And with the villages and main roads to maintain a certain distance,[link widoczny dla zalogowanych], taking into account the surrounding land crops, vegetables and other spraying, the impact on the broiler. These chemical compounds can be discounted through the air or ground pollution, chicken, and chicken health hazard. 2 Check the soil at the site of harmful substances. Broiler farms are often used to farm or greenhouse, before this, be aware of the past, the local application of pesticides, fertilizers and veterinary drugs, the situation (such as DDT, dimethoate, grams of ball powder chemicals), and collected soil samples for testing . Harmful substances in soil not only raised chickens on the ground level has a direct impact, and will Broiler farm water pollution. 3 sheds should be careful selection of building materials. Do not use industrial waste materials, especially chemical, pharmaceutical and other discarded materials. Use of architectural timber. Do not use chemical-treated railroad ties, wood and other synthetic sheet. These materials often contain harmful chemicals on birds. 4 broiler many different types of homes. According to breeding size, economic strength and so flexible structures. In rural areas, promotion of new greenhouse farming. The basic requirements are: Ceiling height of 2.5m, height of 1,2 m on both sides of the window set up convection, Ceiling open a window outside the sunny side of the set, studio set up two large gable window or f-1 port, and install the exhaust fan. This design can be combined with the use of natural ventilation and mechanical ventilation, to achieve effective ventilation and reduce costs. Ceiling layer covered by complex technology: the first layer selected Wu Dimo. The second layer of sub-selection of grass thatch, and the third dosage level was not significantly different. 2.2 to discuss the national standard method used in sample digestion reagent was smaller,[link widoczny dla zalogowanych], and the price is relatively low, but there is a long time to digest, low power consumption and more shortcomings. To meet the requirements normally required to digest samples 1 ~ 2h. The use of concentrated sulfuric acid, hydrogen peroxide digestion method,[link widoczny dla zalogowanych], each sample can be digested only 3O ~ 40min. Both can be saved compared to half of each digest when asked. From the test results, the two digestion methods for the determination of crude protein was no significant effect. Present. Determination of crude protein in the national standard method using concentrated sulfuric acid digestion, and with the copper sulfate and sodium sulfate as a catalyst. In concentrated sulfuric acid, hydrogen peroxide method not included in the national standard before the feed business to conventional quality control methods can be used to digest this, if faced with controversial results. Still need to use national standard methods for sample digestion in the digestion and determination of crude protein. A 23 -
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