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What are the prevention and control measures for heat stress in pigs during summer?
Heat stress refers to the sum of non-specific physiological responses made by an organism subjected to extremely high environmental temperatures in response to any demand the thermal environment places on it. With the rapid development of intensive high-density rearing methods, most southern regions increasingly and urgently need to alleviate the environmental pressure that summer high temperatures place on the pig farming industry, and the climate in the north also shows an upward trend; in recent years the highest temperature in Beijing has also reached over 40 degrees. The decline in pig productivity caused by heat stress has also increasingly drawn the attention of researchers in livestock environment and feed nutrition. Scholars from Japan, the United States, the United Kingdom and other countries
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What to Do About Leaf Drop in Golden Privet During the Growing Season? Causes and Control Measures
In 1999, golden privet (Ligustrum × vicaryi) began to be trial-planted in the Hengshui area of Hebei, and the planted area then increased rapidly. However, starting in 2002, a small number of local golden privets began to drop leaves during the growing season, showing patchy bare spots, and the problem kept spreading. By mid-June 2003, spots appeared successively on the leaves of golden privet over a large area; the spots appeared on old leaves later than on young leaves, then progressed to drying up, leaf drop, and the branches gradually dried up from top to bottom, with a small number dying. The dead patchy areas were mostly in the middle of the planting site.
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How should goji berries be harvested during cultivation?
Harvesting methods for goji berries: After goji berries are planted from cuttings, harvesting can generally begin in 50 to 60 days. First harvest the vigorously growing branches and leave the remaining young branches to continue growing. When the newly grown branches reach about 40 to 50 cm, and before the leaves at the base age, cut the tender branches at the base. New tender shoots can grow again from the axillary buds at the base, and thereafter they can be harvested in several rounds. After summer begins, when the temperature rises above 25 degrees Celsius, it is unfavorable for the growth of branches and leaves, so fertilization and watering should be stopped to inhibit growth and carry the plants through the summer. After the weather turns cool in autumn, growth continues, and harvesting
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Causes of Leaf Drop in Golden Privet During the Growing Season and Solutions
Golden privet (Ligustrum × vicaryi) is an excellent colorful shrub. In practical cultivation in some places, during the growing season its leaves, especially new leaves, successively develop spots, which then progress to drying up, leaf drop, and the branches gradually die back from top to bottom, with a small portion dying. According to surveys, the deaths mostly occur in the middle of the planting plots, while the plants around the edges grow well. The causes are mainly the following two aspects. 1. Caused by disease. The cause of this condition is golden privet leaf spot disease. Leaf spot disease is caused by pathogenic fungi. In the early stage of the disease, brown
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Prevention and Treatment of Toxoplasmosis Infection During Dog Pregnancy
First, pay attention to food hygiene; meat must be thoroughly cooked, and raw meat must be kept away from contaminating cooked food. Second, cats should be kept indoors and fed cooked food or commercial cat food, and not allowed to hunt outside. This is because cats become infected by eating infected mice or birds, or by eating food contaminated with cat feces. Third, pay attention to daily hygiene; remove cat feces every day, and wash hands carefully after contact with animal waste. Fourth, unless a pregnant woman's serum test proves that she has already had a toxoplasmosis infection, she should avoid contact with cats and their feces during pregnancy.
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Causes of Mushroom Death During the Cultivation of Agaricus blazei and Their Prevention and Control
Agaricus blazei Murrill, also known as the Brazil mushroom, has seen rapid growth in artificial cultivation over the past 2 years. In the cultivation of Agaricus blazei, the phenomena of small mushrooms shrinking, turning yellow, and finally dying occur, and their causes are mainly the following. By addressing these causes and promptly taking countermeasures, relatively large losses can be avoided. 1 Excessive temperature: When the mushroom shed is above 30°C for several consecutive days, combined with poor ventilation, mushroom death is likely to occur. Prevention and control methods: During the fruiting period, closely monitor temperature changes.
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Key points to note during jujube storage
1. Thoroughly disinfect the storage room with CT storage-room disinfectant. 2. Lower the storage temperature to 0°C within 2 days before loading. 3. Jujubes should be harvested at the white-ripe stage, that is, when the fruit turns from green to white and the surface is slightly tinged with red. 4. Harvest with the fruit stalk attached; jujubes that have been knocked down with sticks must never be put into storage. 5. Jujubes sprayed with hormones such as ripening accelerators before harvest are not suitable for storage. 6. After harvesting, sort the jujube fruit, dip it in CT liquid preservative specially for jujubes, and pre-cool at 0°C while draining until the fruit temperature is 0
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How to prepare feed during snake farming?
(1) Live animals Snakes are primarily carnivorous reptiles, and their feed sources are extensive. Snakes mainly feed by swallowing, and they can swallow small animals several times larger than their own heads. Moreover, snakes' eyes easily detect moving objects, so in principle live small animals should be fed, such as nutrient-rich frogs, rodents, fish, birds, earthworms, rabbits, chickens, lizards, etc. Different species of snakes have different requirements for feed. Generally speaking, the many-banded krait likes to eat eels and loaches; cobras prefer to feed on rodents; and the king cobra specifically eats
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What precautions should be taken during the processing of snake venom?
1. Pay attention to safety when extracting and processing snake venom. To strictly prevent venomous snakes from injuring people, the movements when milking the venom and when releasing the venomous snake after milking must be quick. When putting a snake that has been milked back into the cage, put the snake's body in first, and when the snake's head approaches the edge of the container opening, let go quickly. If you cannot withdraw your hand in time when releasing the snake, you are likely to be bitten fiercely when the snake turns its head back. 2. Venom-milking equipment must be strictly sterilized. 3. If the venomous snake bites the vessel and will not let go, you may gently swing the snake's body; if it still does not release its bite, you may gently twist its neck, or use a small stick or
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How to conduct teasing during artificial insemination in deer
Teasing is a method in which a teaser stag is allowed to contact does within a certain period of time to determine whether the does accept mounting (but the teaser deer is not allowed to actually mount and mate), so as to determine whether the does are in estrus and to determine the specific time for insemination. The accuracy of teasing plays an important role in improving the conception rate of does. 1. Selection of teaser deer Teaser deer must be young, healthy, docile, and of strong libido. Generally, stags with large testicles secrete more androgen and have a strong libido, so more attention should be paid to observation and note-taking in daily work for future
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