In swine production, the method of breeding piglets through crossbreeding between different breeds and strains using their heterosis is called economical crossbreeding of pigs. The general hybrid offspring have strong vitality, rapid growth and development, high daily weight gain, and the province's feed is welcomed by farmers. As a result, some farmers have reared piglets on their own pigs, but the piglets they produce have had more stillbirths, and their survival has become stagnant pigs. This is because hybrid pigs are produced by the crossing of two breeds with certain genetic differences. The hybrids are even genetically unstable. They are used as the offspring produced by their parents. Most of them are not developed to heterosis; They are closely related to each other and are used as maternity mates that are closely related to each other. Nuclear contradictions ease, genetic differences are small, and the viability is reduced. In addition, severe trait isolation occurs in hybrid pigs from the first generation. Therefore, the offspring produced by using hybrid pigs as breeding pigs are necessarily small in size, have weak viability, and have poor disease resistance. It can be seen that a new generation of hybrid pigs can only be reared for hogs, and they should all be castrated for fattening and cannot be used for breeding pigs.
Preservatives are a kind of Food Additives which can inhibit microbial activities and prevent food spoilage. In order to make the food have a certain storage period, it is necessary to adopt certain measures to prevent the infection and reproduction of microorganisms. Practice has proved that the use of preservatives is one of the most economical, effective and simple methods to achieve the above purposes.Preservatives should also be used as food additives for the purpose of maintaining the original quality and nutritional value of the food. There are 25 kinds of preservatives such as benzoic acid, sodium benzoate, sorbate, potassium sorbate and calcium propionate.Preservatives , Thickener, Acidity regulator, Food Additives, Sweeteners.we have 4-aminobenzoic,Cycloartenyl ferulate,prechlorotadalafil,Propyl gallate,Cycloartenyl ferulate,fluorescein sodium,4-Aminobenzoic,Raspberry Juice Powder,Aronia Juice Powder,Noni Juice Powder,Mango Juice Powder,Hawthom Juice Powder.
Preservatives , Thickener, Acidity regulator, Food Additives, Sweeteners
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