How to choose the variety of rabbit and how to change it?
1 Meat rabbit
The largest breeds raised in China are New Zealand rabbits, California rabbits, Belgian rabbits and Chinese white rabbits. The basic requirements for meat rabbit breeds are fast growth in the early stage (70 ~ 80 days old body weight should be more than 2.5 kg), high feed efficiency, good meat production performance, and adult weight of about 4 kg.
New Zealand rabbit is the most widely raised meat rabbit in the world. It originated in the United States and has three populations: new Zealand white rabbit, New Zealand red rabbit and New Zealand black rabbit. New Zealand white rabbits are the most common. The main appearance features of New Zealand white rabbits are: White coat, thick and short head, plump muscles in buttocks and waist ribs, good meat shape, and adult weight up to 4-5 kg. The biggest characteristic of this variety is that it grows fast in the early stage, has strong fecundity and is easy to manage. It is suitable for raising in most areas of our country. It is an ideal breed of meat rabbits in China.
The appearance of the California rabbit is characterized by white coat, black ears, nose, claws and tail, also known as "eight o'clock black". It has good reproductive performance and strong motherhood.
Belgian rabbit is a large meat rabbit. Its shape and color are similar to those of a hare, with bright black edges on the tip of the ear and black on the inside of the tail. Adult rabbits weigh 5-6 kg, while big rabbits can reach 9 kg. The meat production rate is the highest and the economic benefit is good.
Chinese white rabbit, also known as vegetable rabbit, is small, and the adult rabbit weighs 2.0-2.5 kg. The main features are: handsome and small, small and upright ears, sharp mouth. The main advantages are strong reproductive performance, resistance to rough feeding and strong disease resistance.
2 wool type rabbit
German Angora rabbit is a high-yielding fine-haired long-haired rabbit, which is characterized by high coat density, hair clump structure but not easy to be entangled, high wool yield, 800g of male rabbit and 1100 g of female rabbit, up to 1700 g, good wool quality, large proportion of fine hair and fine wool fiber, so it is the most ideal wool rabbit for farmers. However, this kind of rabbit requires high conditions and should be adapted to local conditions in production.
French Angora rabbits are coarse-haired long-haired rabbits with high coarse hair content, but the wool yield is lower than that of German Angora rabbits. Its face is long and nose is high, forehead hair, cheek hair, foot hair are all short, the figure is big, the ear is big and thin and there is no long hair on the back of the ear. It has strong fecundity, high lactation performance, strong physique and adaptability, but low economic benefit.
The middle Angora rabbit is mainly characterized by the dense slender fluff on the back of the rabbit's ear, floating out of the ear, with a head like a lion's head and claws like a tiger's claw. The adult rabbit weighs 2.5-3.0 kg, with high reproduction rate, good motherhood, rough feeding tolerance and strong disease resistance. The wool yield of the new Chinese Angora rabbit is not inferior to that of German and French rabbits, and it can also be selected in production.
(3) skin rabbits
Rex rabbit, also known as velvet rabbit and Rex rabbit, is characterized by medium size, symmetrical structure, broad head and medium large ears. The whole body is covered with dense and shiny short villi, initially reddish brown on the back, lighter on the side, and yellowish on the abdomen. At present, Rex rabbit has more than 20 kinds of fur colors, of which white, blue and brown are the most precious. The main problems of Rex rabbits in China are small size and impure coat color. Due to the complex inheritance of coat color, it is better to choose pure color rabbits in production. Rabbits in small and medium-sized rabbit farms should not have more than three kinds of coat color, and a small amount of fur color in the family should be 1, preferably white. The disadvantages of Rex rabbits are high requirements for feed conditions, poor disease resistance, easy to be infected with pasteurellosis and coccidiosis.
4 dual-purpose rabbit
Purple and blue rabbits have good physique, strong adaptability, docile temperament, fast growth, good fecundity and lactation, good coat color and wool quality. at present, there is a great demand in our market.
Japanese big-eared white rabbits have the advantages of large size, good physique, strong adaptability, early maturity, fast growth, strong fecundity and resistance to rough feeding.
The flower giant rabbit has good physique, strong fecundity, but poor maternal nature. the body weight of adult rabbit reaches 4.5 ~ 5.0kg, which can adapt to the feeding conditions of our country, and there are more in the north.
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Why do rabbits eat their own soft dung?
In the process of raising rabbits, we can see that the hard dung balls discharged by rabbits are formed by secondary digestion. Rabbits eat forage during the day, discharge soft feces at night or before dawn, and as soon as the soft feces are discharged, they immediately eat it, and through secondary digestion and absorption, the residue forms a hard dung ball out of the body. Rabbits eat their own soft feces at night, not because of the lack of certain nutrients in the body caused by dung-eating, but its normal physiological phenomenon. This instinct of rabbits has two great advantages: one is that it can make the rabbit house,
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How to control the occurrence of silkworm disease
Through practical investigation, we found that in the process of silkworm rearing at home, silkworm farmers' lack of understanding of the harm of silkworm disease often led to the occurrence of silkworm disease, resulting in serious losses to production. Therefore, how to control the occurrence of silkworm disease is always the primary task in sericulture production. 1. The cause of silkworm disease is that sericulture is a high-density group rearing mode. There are many silkworm heads in a certain area, and silkworm eats mulberry and excreta in the same area. Once disinfection is negligent, or improper feeding and management, infectious silkworm disease is easy to occur, resulting in spread,
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