-
How to carry out good selection and mating in white raccoon dog breeding
The coat color of the white raccoon dog type currently found in China is already very stable, that is, the white-haired parts, whether guard hairs or underfur, are entirely white, with no other mixed colors (such as guard hairs white but underfur not white or partly not white, or some part of the body not white, etc.). Therefore, selection of white raccoon dogs should focus on coat color, fur quality and body shape, and males in particular should be selected even more carefully. For mating, white raccoon dogs should preferably be mated with wild-type coat color raccoon dogs, and mating between white raccoon dogs is not advisable. White raccoon dogs generally have the shortcoming of thick, long guard hairs; the wild-type raccoon dogs chosen for mating should preferably have short and dense guard hairs, so as to correct the shortcomings of the white raccoon dog.
-
Breeding Methods and Technical Key Points for White Raccoon Dogs
I. White Raccoon Dogs and Their CharacteristicsRaccoon dogs in nature have always been dark brown; this common ordinary color type is genetically known as the wild type. In 1974, the Harbin Zoo in Heilongjiang Province acquired a rare male white raccoon dog (eyes and muzzle both pale pink). In 1980, among domesticated raccoon dog populations in the three northeastern provinces, white raccoon dogs or piebald raccoon dogs with yellow-brown or pale blue eyes and black muzzles were successively discovered. These special color types differing from the wild-type coat color are called mutant types. The Institute of Special Animal and Plant Sciences of the Chinese Academy of Agricultural Sciences
-
Rabbit breeding selection tips: how to choose a rabbit breed
1 Meat-type rabbits. The breeds most commonly raised in China are: New Zealand rabbit, Californian rabbit, Belgian rabbit, and Chinese White rabbit. The basic requirements of meat rabbit production for a breed are fast early growth (body weight should reach more than 2.5 kg by 70-80 days of age), high feed conversion efficiency, good meat production performance, and adult body weight of around 4 kg. The New Zealand rabbit is currently the most widely raised meat rabbit in the world. It originated in the United States and has three populations: the New Zealand White rabbit, New Zealand Red rabbit, and New Zealand Black rabbit. The New Zealand White
-
Detailed Explanation of the Breeding Methods and Keeping Techniques for Neon Tetras
Morphological Characteristics of the Neon Tetra The neon tetra, also known as the red neon tetra, neon lamp fish, red-green neon tetra, and red lamp fish, belongs to the Cyprinidae family and originates from the tributaries of the upper Amazon River in South America. The neon tetra has a petite body, only 3-4 cm long, but its body color is extremely gorgeous, earning it the reputation of "queen" among tropical fish, and it is one of the most popular tropical fish species. Above the lateral line of the fish body there is a blue stripe extending from the eye to the caudal peduncle, turning black toward the back, while below, the area in front of the anal fin is silvery white and the rear is bright red. The eyes are black, with silver-blue
-
Detailed Explanation of the Code of Practice for Pollution-Free Breeding of Domestic Fish
I. Pollution-Free Management and Cultivation of Broodstock 1. Requirements for the breeding base: no pollution from the three types of waste; the atmospheric environment must comply with the requirements of "GB3095-1996 Ambient Air Quality Standard"; the soil environment must comply with the requirements of "GB15618-1995 Soil Environmental Quality Standard"; and the aquaculture water must comply with the requirements of "NY5051-2001 Pollution-Free Food Freshwater Aquaculture Water Quality Standard". 2. Broodstock ponds should have an area of 5-15 mu and a water depth of 1.5-2.5 m. The ponds should be exposed to the sun and then strictly disinfected with quicklime and other substances before use.
-
Detailed Explanation of Key Points and Methods for Artificial Breeding Technology of Catfish
I. Materials and Methods 1. Experimental Site and Facilities The experiment used the original spawning ponds and hatching ponds for artificial breeding of carp, crucian carp, and the four major Chinese carps. For the spawning nests, palm bark was steamed and disinfected, then strung together with bamboo poles or ropes and suspended in the middle and upper layers of the spawning pond, with the pond bottom covered with palm bark. 2. Source and Cultivation of Broodstock Broodstock were mainly collected from wild fish in Biliuhe Reservoir in Dalian City and subjected to intensive pond cultivation. Broodstock were fed freshwater trash fish and freshwater mussel meat. The average body weight of males was 500
-
Key Breeding Techniques for Early Growth of the Second-Crop Velvet in Deer
There are 2 methods for harvesting velvet antler: sawing the antler and cutting the antler. Among them, sawing the antler generally starts from 3-year-old deer, and can be harvested 2 times per year. The 1st time is 45-50 days after Qingming, called "first-crop velvet", and the 2nd harvest is 50-60 days later, called "second-crop velvet". To promote early growth of the second-crop velvet, the following measures can be taken: 1. Select superior deer breeds - generally, the regeneration velvet yield of Tianshan red deer and Tarim red deer is significantly higher than that of Northeast red deer, so to obtain more regeneration velvet, it is best to choose to raise these two pure red deer breeds. 2. Utilize hybrid advan
-
Detailed Explanation of Key Points on Sleeper Fry Breeding Technology
Sleeper, commonly known as "puyu," has a high meat content, delicious flesh, and rich nutrition, with market demand exceeding supply, and fry supply has become the main factor affecting sleeper aquaculture. 1. Broodstock selection: Broodstock can be purchased from the market or selected from naturally caught broodstock, choosing robust, disease-free, and injury-free individuals of 2 to 3 winter ages, requiring females above 100 g and males above 150 g. 2. Broodstock cultivation: The pond used for breeding requires a flat bottom, an area of 1 to 3 mu (1 mu = 667 sq m
-
How to raise first-time mother pigs? Master these breeding secrets
1. Nutritional regulation during the growing period. For young sows (two-way crossbreeds), starting from 30 kg body weight, each kg of compound feed in the diet should contain 13 megajoules, 16% crude protein, 0.8% lysine, 0.75% calcium, and 0.65% phosphorus; do not restrict feed intake, and let them eat as much as possible. Starting from 45 kg body weight, increase the calcium and phosphorus content by 0.1% each. At 150 days of age, when the young sow weighs about 80 kg, control feed intake to 2.3 kg to 2.5 kg per day. For native-breed young sows, the calculated body weight should be 2 kg to 3 kg less.
-
Key Technical Points for Breeding and Incubation Management of Meat Snakes
Snakes generally reach sexual maturity at 2-3 years of age, and the estrus season is in spring each year. Mating mostly begins at the first molting after waking from hibernation each year. Because the sperm of male snakes can survive in the female's body for several years, a female snake mates at most 3-4 times in her lifetime. During the mating and breeding season, sufficient food should be provided. Near the egg-laying period, pregnant female snakes and male snakes should be kept separately to maintain quiet and avoid disturbances from all sides. The egg-laying period of snakes is about July to August. During this period, as soon as snake eggs are found, they should be collected in time for artificial incubation, and should not
条件筛选