It is well known that any nutritional deficiency can lead to a decrease in egg production and affect hatching.However, some nutrient deficiencies can seriously affect egg production but have little or no effect on hatching;Other nutrient deficiencies, while having a small effect on egg production, can seriously affect the hatching rate. Some modern farms have lists of scientific drugs and feed additive to make sure from breeding eggs to breeding eggs and last chicks.
(1) the effect of vitamin B2 deficiency on the incubation rate: vitamin B2 deficiency is one of the most important nutritional factors affecting the incubation rate, which is manifested as toe paralysis, with clinical symptoms of toe flexion and short stature, and the death peak occurs in the 9th to 14th days of the incubation period.Deficiency of folic acid and biotin often leads to the shortening of long bones and the appearance of apaper-beaked malformation; in addition, folic acid deficiency can lead to massive death in the first 18-21 days of the incubation period.Vitamin B12 deficiency can lead to abnormal placental position between the head and thigh of an embryo.When the vitamin A in the diet of breeding chickens is deficient, the embryo can die within 3 to 4 days of incubation, and the dead embryo shows hypoplastic circulatory system.In addition, vitamin K and vitamin E deficiency can also be different degrees of dead embryos. The breeding chicken must be give rational feed additive when they are in chicken cage to make sure malnutrition.
(2) effects of trace elements on hatching rate: manganese is one of the trace elements that have a serious impact on hatching rate of breeding chickens.When there is a lack of manganese in the diet of breeding chickens, the embryo will show parrot-beaked deformity, and the diseased chickens will have long limb bones and short lower collar bones, and the upper collar bones will be bent downward.When trace element selenium is deficient, although can bring about breed chicken to lay rate to drop.But more serious is to affect the hatching rate of seeding eggs, disease as broiler common exudative diathesis disease, and can appear cerebral softening, hydrocephalus.In addition, zinc deficiency can also affect the incubation rate to some extent.
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Post time: Jan-23-2019