国产免费牲交视频,国产精品露脸视频观看,少妇的渴望HD高清在线播放

高清破外女出血AV毛片,无码视频免费一区二区三区,欧美熟妇另类久久久久久不卡,亚洲熟妇无码一区二区三区导航,国产精品无码免费播放

Broiler chickens require different nutrition and feeding management at different growth stages. The feeding goal during the chick rearing period (0-3 weeks old) is to achieve timely weight control at each week of age. There is data indicating that the weight of chickens at the end of one week of age is 1 gram less than the standard weight, and the slaughter weight will be 10-15 grams less. In order to achieve the weight target at the end of one week of age, a high-energy and high protein diet should be fed for one week, with an energy content of no less than 13.37 megajoules per kilogram of feed and a protein content of 22% to 23%. Four egg yolks and 100 grams of milk powder can be added to the diet for every 100 broiler chickens, and drinking water with SuBu-14 for one week. At 2-3 weeks of age, appropriate feeding restrictions should be implemented to prevent overweight and reduce the incidence of ascites, sudden death, and leg disease. The protein content in the feed during this period should not be less than 21%, and the energy per kilogram of feed should be 12.46-13.37 megajoules. The mid chicken stage (4-6 weeks of age) is the stage of skeleton formation, and the focus of feeding is to provide a nutritionally balanced full value diet. During this stage, the protein content in the feed should be above 19%, and the energy per kilogram of feed should be maintained at around 13.38 megajoules. During the fattening period (from 6 weeks of age to slaughter), in order to accelerate weight gain, it is necessary to increase the energy level in the feed by adding 1% to 5% animal oil to the diet, which can reduce the crude protein content to 17% to 18%.

website：http://brixiaweb.com/en/news_view_779_107.html

Previous：What are the key points of managing egg laying boxes?

Next：The reason for broiler chickens scratching their fur

Return

<fieldset id="abqqd"><form id="abqqd"></form></fieldset>

高清破外女出血AV毛片,无码视频免费一区二区三区,欧美熟妇另类久久久久久不卡,亚洲熟妇无码一区二区三区导航,国产精品无码免费播放

language

Company news

Industry news

Exhibition

Project center

Frequently Asked Que..

Scientific feeding of broiler chickens is necessary

Related News