The free-range chicken breeding mode expands the space for chicken activities and the chickens get full exercise. Therefore, the free-range chickens are very lively. The cut feathers are more glossy than the captive chickens, and the meat taste is better than the chickens in the cages. High quality. With regard to the total advantages and disadvantages, there are also certain problems with the current farming situation of free-range chickens. The most common problem is that the survival rate of free-range chickens is not high. How to solve the problem and improve the survival rate of scattered chickens, we must first analyze the cause of the problem. There are many reasons for the low survival rate. The most important reason is to find out from the chicken's growing environment and the resistance of the chicken body in this province. According to the experience of free-range chicken farmers, free-range chickens have a high mortality and morbidity during the period from 0 to 30 days due to the environment, temperature, and feeding. These are summarized as follows: 1. The poor infrastructure of scattered chicken breeding farms: The most fundamental principle of breeding is to create a most suitable living environment for the breeding objects, carry out collective reproduction and concentrated growth, and then produce economic benefits. However, due to poor infrastructure construction in some farms, it is difficult to achieve various indicators suitable for chicken growth, such as temperature, ventilation, leading to chickens unable to adapt to the growing environment and disease, and eventually died. If the temperature is too low, chickens suffer from white tinea disease, poor ventilation, high exhaust gas content, and bronchitis. Especially for chicks, it lowers its survival rate. Early hatching chicks were small, delicate, with short hairs, low heat preservation capacity, and inability to regulate body temperature until 3-4 weeks of age. Therefore, to do a good job of keeping warm and cold, to adjust the appropriate temperature and humidity, is the key to raising chickens and raising the survival rate of chicks. The suitable temperature and humidity for brooding are as follows: Weekly temperature (daytime) Temperature (evening) Relative humidity (%) 1-2 32-28 34-30 65-60 3-4 28-26 30-28 65-55 5-6 26-23 28-25 55 7-8 23-20 25-22 55 More than 8 weeks old 20 22 55 2. The free-range chicken farmers did not establish strong resistance to the chicken body. The free-range chickens will be stocked in mountain forests and fruit trees during the breeding period. During this period, due to frequent contact with the outside world, the chance of suffering from infectious diseases will also increase, and defense work will be well done to properly adjust the nutritional ratio in the feed and increase it. The health supervision of free-range chickens can improve the survival rate of scattered chickens. The epidemic prevention measures can also greatly improve the survival rate of scattered chickens. At present, there is no uniform immunization program for free-range chickens, and most of the wild-type chickens that have died most often are chickens with bacillus albicillus disease, Ganpaulin disease (infectious bursal disease), Newcastle disease, bird flu, etc. Occurrence of white bacillus disease. In the high mortality rate before the age of 30 days, the rural free-range chicken immunization program is recommended as follows: One-day-old: subcutaneous (or muscle) injection of Marek's disease vaccine. 3 to 9 days of age: 2 new shoots of double seedlings or new double shoots of the new branch, eye drops and nose, or subcutaneous injection with a new branch oil emulsion, while the new branch or new branch of kidney is used for nasal, eyelid Or drinking water. 10 to 14 days of age: Two attenuated vaccines for the French bursal, drinking or dripping. 20 days of age: Newcastle disease II or Lateta or Newbranch 52 vaccine, 2 drops, eye drops or drinking water. Rhodium powder Rh≥99.95% Properties: silver-white metal, extremely hard, wear-resistant, also has considerable ductility Application: It can be used as raw material for electrical instrumentation, chemical industry and manufacture of precision alloys. Rhodium powder is based on the widespread use of ruthenium in the industrial industry. Since rhodium is a rare metal required by the industry, the industry price is slightly higher than that of general non-ferrous metals. Rhodium, one of the rare elements, has various uses. Rhodium can be used to make hydrogenation catalysts, thermocouples, platinum-rhodium alloys, etc. It is also often plated on searchlights and reflectors, and is also used as a polishing agent for gemstones. and electrical contact parts. precious metal XI AN RHINE BIOLOGICAL TECHNOLOGY CO.,LTD , https://www.rhinebioteches.com