نتایج جستجو برای: feed efficiency 635
تعداد نتایج: 447993 فیلتر نتایج به سال:
In France, about 95% of the fatty liver production comes from mule ducks, an infertile hybrid cross between female common ducks (Anas platyrhynchos) and Muscovy drakes (Cairina moschata). As a hybrid, genetic improvement of the performance of mule ducks is achieved by selection of the parental populations. Feed represents two-thirds of the total costs of duck production; thus, the breeders' mai...
A large part of the environmental impact of animal production systems is due to the production of feed. Insects are suggested to efficiently convert feed to body mass and might therefore form a more sustainable food and/or feed source. Four diets were composed from by-products of food manufacturing and formulated such as to vary in protein and fat content. These were offered to newly hatched Ar...
treat diseases, improve the efficiency of feed utilization and feed acceptance, or to be beneficial to the health or metabolism of the animal in some way. They typically are administered to pigs through the feed, water or by injection. Feed additives can be divided into two broad categories, subtherapeutic (less than 200g/ton and for more than 14 days) and therapeutic (more than 200g/ton of fee...
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