Content area
Full Text
Abstract Developing ecological scale breeding of local chickens with natural conditions, such as forest lands, grass lands, orchards and mulberry fields, not only can improve the quality of poultry products and the production benefits of chicken breeding, but also can develop and use local chicken germplasm effectively and promote their breed protection and industrialization. From integration and application of breed selection, breeding management, nutrient regulation, grass planting and grazing, a new ecological scale breeding technique of local chickens is proposed.
Key words local chickens; Ecological; Scale; Breeding; Technique
Local chicken has a long history of cultivation in China, which is a potential characteristic industry in animal husbandry development[1]. However, due to inadequate protection of some local chicken breeds resources, uneven germplasm, and imperfect breeding technology, local chicken have relatively low production performance, with slow large-scale process. To further develop and utilize egg-meat dual-purpose local chicken breeds with obvious local characteristics, improve market share of popular young cocks and hens and increase economic benefits of local chicken breeding, the author explored ecological scale breeding technique of local chicken.
1 Breed Selection
The chicken breeds suitable for ecological grazing should satisfy the following characters; good adaptability, roughage resistance, like foraging, earlier laying, strong disease resistance, and dual-purpose of egg and meat production. Generally, local breeds (such as Gushi chicken, Xianju chicken, white-car yellow chicken , Huainan three-yellow chicken, Xuanzhou chicken, Huaibei chicken, Chongren chicken, Kangle chicken and local chicken widely raised in native area) are selected, or Suqin green-eggshell layer, Huafeng chicken or local-breeding chicken with good egg and meat performance can be selected.
Dongtai chicken is an egg-meat dual-purpose local chicken breed, with medium or smaller size, flexible activity and strong foraging ability. Cocks and hens are featured by luster feather, and cameous, yellow or taupe beak and feet. Adult cock is weighed 2.00 - 2.50 kg, while adult hen is weighed 1.25 - 1.50 kg with an annual production of 100 - 120 eggs. The eggs have such characters as low cholesterol, delicate taste, dense protein, good luster of vitellus, while the chicken is delicious with high nutriLional value. Scatter-feeding and opening raising are the prior feeding ways.
Suqin green-eggshell layer is a newly breeding layer breed with Dongxiang green-shell layer as the male...