-
How to Identify Stunted Pigs and Treat Them According to Their Symptoms
In pig-farming practice, it is common to see some pigs that have been fed for a year or longer yet weigh only around ten kilograms; although they eat, they simply do not grow. Such pigs are called "stunted pigs." 1. Main causes of stunted pigs: 1. A plain and insufficient diet, along with a lack of green feed, trace elements, vitamins and minerals, etc. 2. Improper feeding and management. 3. A damp, unsanitary pigpen. 4. The influence of disease. Such as pig roundworm disease, pig lice, white scour, and chronic wasting diseases
-
How to identify high-quality fish fry? Just look at these few points
First, look at the size of the fry. In the same pond, the same species of fish should be uniform and even when harvested, with little difference in body length and body weight. On the contrary, poor-quality fry with large individual differences and uneven size often have a very low overall survival rate due to competition for food, mixed genetics, poor rearing, and other reasons. Second, look at the body color of the fry. High-quality fry have bright, glossy body colors. Different species and different rearing methods produce fry with different body colors. Generally speaking, high-quality silver carp fry should have a silver-gray back, with silvery-white sides and belly; high-quality grass carp fry are pale
-
What are the methods for identifying healthy dogs and sick dogs?
A healthy dog responds keenly to changes in its surroundings, is in good spirits, loves activity, has no odd temperament or abnormal behavior, is easy to train, cooperates with people, has a good appetite, and does not drink excessive water. A healthy physique should appear naturally balanced and symmetrical when standing, with limbs standing upright and no deformities. The front chest is broad, the abdomen is tucked up, and the muscles on the body are full (especially the muscles of the buttocks and back), firm and strong. The tip of the nose is slightly cool, and there is no discharge from the mouth, nose, eyes, anus, opening of the penile sheath, or vulva, and the hair around the perineum is clean. The lips, oral cavity, and tongue mucosa have no ulcers or discharge.
-
A Detailed Guide to Identifying and Controlling Common Pests of Shiitake Mushrooms
1. Mites, commonly known as fungus lice, are divided into two types: flour mites and straw itch mites. Straw itch mites are small and difficult to see with the naked eye; they tend to gather in clusters on the surface of the growing substrate. Flour mites are larger, white and shiny, do not form clusters, and appear powdery when numerous. On shiitake mushroom blocks infested by mites, the mycelium is gnawed on, and in severe cases the mycelium can be eaten completely. If mites occur in the spawn, a cotton plug dipped in 50% dichlorvos can be inserted to fumigate and kill them. If mites appear during the mycelium-running stage, they can be killed by spraying 0.5% dichlorvos, or by spraying a 2000-fold dilution of 25% permethrin-ester compound. If mites occur during the fruiting stage
-
How to Identify Ginger Bacterial Wilt? Detailed Explanation of Prevention and Control Methods
Ginger bacterial wilt, also known as ginger rot or ginger bacterial blight, is the most serious disease in ginger production. It causes damage from the ginger seedling stage through the ginger rhizome harvest period as well as during storage, and it has a wide host range. The pathogen of ginger bacterial wilt belongs to the bacterium Pseudomonas solanacearum. The primary infection comes from diseased ginger seed or bacteria-carrying soil, and the pathogens from other diseased hosts such as peanut bacterial wilt and tomato bacterial wilt can also be transmitted to ginger. The ginger bacterial wilt pathogen invades through wounds on ginger roots and tubers (mainly insect-bored wounds). The affected roots first appear water-soaked and light brown, and the pathogen moves along the vascular bundles into the ginger rhizome, and the affected
-
How to Identify Pigeon Diseases? Teach You to Tell Pigeon Illnesses with a Discerning Eye
Check the body posture. Sick pigeons are in poor spirits, inactive, isolated from the flock, eat less or not at all, are thin, have ruffled feathers, dull eyes, rapid breathing, wheeze when breathing or make abnormal sounds from the throat and trachea, drink excessively, or fail to feed their young. Check the eyes. Sick pigeons suffering from ornithosis, paratyphoid, ophthalmia, mycoplasmosis and vitamin A deficiency have red, swollen, inflamed eyes with increased secretions; those with conjunctivitis have reddened conjunctiva and dilated blood vessels; with erysipelas or pneumonia, the conjunctiva becomes cyanotic (purple-blue); with anemia or malnutrition, the conjunctiva is pale; with organophosphate
-
How to identify and control black spot on roses
This disease occurs commonly and causes severe damage, leading to massive leaf drop in roses and huge losses. The pathogen is a fungus of the genus Actinonema in the subphylum Deuteromycotina. 1. Symptom identification: In the early stage of the disease, brown radial spots appear on the leaf surface, which then gradually expand into circular or nearly circular spots with a diameter of 4-12 mm; in severe cases, the lower leaves drop early, and the disease gradually spreads upward until the upper leaves also fall off completely. Rainy and humid conditions are the main requirements for spore production; when there are water droplets on the leaf surface and the temperature is suitable, infection can occur in 6-10 hours, and symptoms appear in 3-6 days
-
How to Tell Male and Female Koi Apart? Methods to Identify Males and Females
Once koi grow into adult fish, males and females differ, and we can distinguish them by the head, body shape, belly, pectoral fins, vent, spawning behavior, and other aspects. 1. Head: the female's head is slightly narrow and longer; the male's head is wide and short, with the forehead slightly protruding. 2. Body shape: the female's body is short, thick, and plump, with a swollen belly, and the closer to spawning time, the more obvious the belly swelling; the male's body shape is leaner and longer. 3. Pectoral fins: the female's pectoral fins have rounded tips and are larger; the male's
-
How to Identify a Sick Rabbit? Learn the Nine Observations to Easily Judge Rabbit Illness
Discovering sick rabbits and diagnosing rabbit diseases is the foundation for controlling the spread of disease. Whether a rabbit is healthy should be observed from the following aspects: Appearance: A healthy rabbit is full of energy, has smooth fur, moves nimbly, holds a proper posture, and grows quickly. Sick rabbits, however, are mostly listless or extremely excitable (such as with rabbit plague), have rough, messy fur (such as with chronic wasting diseases, nutritional deficiency disorders, etc.), move slowly, and have abnormal postures. For example, when suffering from pododermatitis and foot ringworm, the hind limbs dare not touch the ground; with "splay legs" and "O-shaped legs," they cannot stand normally; with pneumonia, breathing is difficult; with wry neck, the head and eyes are tilted and the rabbit rolls over.
-
What are the methods for identifying the quality of fish fry?
Buying high-quality fish fry is the key to improving the survival rate. The quality of the fry can be judged by indicators such as body color, activity, and sampling inspection. Body color: high-quality fry have the same body color as a group, with clean bodies and no mud clinging to them; poor-quality fry vary in body color as a group, commonly known as mixed-color fry, and their bodies carry mud. Activity: stir the water holding the fry into a whirlpool; most high-quality fry swim against the current at the edge of the whirlpool; most poor-quality fry are drawn into the whirlpool. Sampling inspection: blow on the water surface; if they can move against the wind and current, and after the water is poured off
条件筛选