Huge goose

(I) Origin and Distribution

Huoyan Goose is one of the small varieties of white Chinese goose and is known for its excellent egg production performance. Native to Shandong Laiyang area (Five Dragon Goose). After being transported to the northeast provinces by the Shaoguan East, they are now widely distributed in Shandong (Wulong Goose), Liaoning, Jilin and Heilongjiang, and they have their own characteristics. The annual breeding area is over 100 million.

(b) Variety formation

The geographical conditions of the Huoyan Geese Production Area include hills, plains and semi-mountainous regions. The average annual temperature is 11.2°C to 0~4°C. The absolute temperature difference is from 35°C above zero to minus 30°C, and the annual precipitation is between 600 and 1100? The frost-free period is 110~193d. The peninsula area with a maritime climate in Shandong Province has abundant rainfall, a mild climate, and a large number of shallow water channels and ponds. It is a high-yield and stable area for agricultural production in Shandong Province; Changtu County in Liaoning Province is located on both banks of the Liaohe River, and is a hilly and plain area with fertile soil. It is Liaoning. The province's famous granary, and there are 330,000 mu of grassland; Tonghua in Jilin Province is a mountainous area and a semi-mountainous area with adequate rainfall. The crops are dominated by rice, corn, soybeans, and millet, with abundant grass and leaves; Yanshou County, a central production area of ​​Heilongjiang, is a water plant. A flourishing Northland food production area. The common characteristics of all producing areas are lush vegetation, abundant water resources, advanced agricultural production, abundant feed, and good natural conditions for the development of geese.

(three) body appearance

1. Appearance characteristics

Huoyan goose body type light and compact. The head is of medium size, with smooth saueroma in front of the forehead, triangular eyes, and an indentation in the upper eyelid, which is a unique feature of the breed (see Figure 56). Under the jaw, there is a pharyngeal bag. The base is arched. The body is egg-shaped, with a flat back and a full chest. The forequarters are tall and straight. The adult goose has plump abdomen, but there are abdominal folds. Legs stout.喙, sarcoma, 胫, 蹼 orange; iridescent blue-gray; feather white. Shandong province's goose neck is relatively slender, abdominal abdomen is compact, there are abdominal folds accounted for a small number of abdominal folds, submandibular pharyngeal bags are also a minority; goose bags in the three northeastern provinces have more pharyngeal bags and deeper abdominal folds.

2. Weight and body measurements

Exclusion goose weight changes greatly, the average weight of Shandong goose is 4.60?, 4.58 for Jilin, 4.44 for Liaoning, 3.72 for Heilongjiang, and 3.12-3.82 for female goose, 3.90 for Shandong. The 3.82 for Liaoning, 3.72 for Jilin and 3.12 for Heilongjiang.

(IV) Production performance

1. Meat production performance

Under grazing conditions, more than 5 months old meat gooses are slaughtered for sale. The slaughter determination results in Shandong and Jilin are as follows: Goose with a live weight of 3250-4510g, the slaughter rate of semi-clean carp was 78.3-81.2%, and the slaughter rate of net carp was 70.3-72.6%.

2. Egg production performance

In semi-grazing rearing conditions, the annual egg production is about 100 eggs; the egg weight is 120-150g. Eggshell white. The eggshell is 0.45 to 0.51 inches thick. The egg shape index is 1.41 to 1.48.
Sexual maturity is generally 7 to 8 months of age. In the case of 1:6 to 7 male and female breeding ratios, the fertilization rate of eggs is about 85%, and the hatching rate of fertilized eggs is 82 to 90%.

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