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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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How to ensure success in the three key areas when inducing spawning in broodstock in summer?
From the Start of Summer to Grain Full is the best period for inducing spawning in broodstock. At this time the water temperature is suitable, the spawning rate and hatching rate of broodstock are high, and the survival rate of fry after being stocked in ponds is also high. If this favorable opportunity is seized and strict control is exercised over the three key areas - broodstock selection, drug use, and spawning induction management - spawning induction can be successful. Selecting good mature broodstock Whether the broodstock used for spawning induction are mature determines the quality of the spawning induction results. When selecting broodstock, maturity is generally judged by external characteristics. Mature female broodstock have a distended, rounded, soft and elastic abdomen; in grass carp and silver carp, the ribs can be felt when touched with a finger, and the genital pore protrudes and is slightly red. Immature female broodstock have a relatively rounded front abdomen but a thinner rear abdomen, are not soft enough and lack elasticity, and the genital pore does not protrude or protrudes only slightly and shows no red color. Overmature female broodstock show an excessively distended abdomen that has elasticity but no resilience, like an inflated appearance, and the genital pore protrudes and is congested and purplish red. Therefore, when selecting broodstock, maturity cannot be determined by abdominal size alone.
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How do you make jujube paste popsicles that are both delicious and refreshing in summer?
Ingredients: 500 g red dates, 1400 g white sugar, 100 g starch, 50 g osmanthus, 7000 ml water. Method: 1. Wash the red dates, boil them in water until soft and cooked, peel and remove the pits, and make them into jujube paste. 2. Put the starch in a bowl, pour in a little cold boiled water and mix evenly into wet starch. 3. Pour the water into a pot, bring to a boil over high heat, then add the white sugar, wet starch, and jujube paste and mix well, adjust the taste, sprinkle in the osmanthus, and after it cools, pour it into popsicle
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How to grow Phalaenopsis orchids so they bloom again in summer
The normal flowering period of Phalaenopsis orchids is generally from February to May. Based on the author's experience, with proper care they can be made to bloom all year round. I have a new variety of "Big Red Flower Phalaenopsis" at home. After the Spring Festival I cut off the flower spikes and repotted it, and before "May Day" it began to send out new flower spikes again. On July 1 the first flower opened, and now they are blooming one after another. This is the second blooming in 2000. The cultivation method is summarized as follows: 1. Use an ordinary clay pot with an enlarged drainage hole at the bottom; it is best to make the drainage hole area reach one third of the pot bottom area. For clay pots, a medium
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Laying hens have high water requirements during peak laying periods; they drink more in summer and no less in winter
They drink more in summer and no less in winter: water requirements of laying hens during peak laying
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Key Feeding and Management Points for Raising Pregnant Sows Well in Summer
Pregnant sows are extremely sensitive to external stimuli. The heat stress brought by high temperatures can easily cause miscarriage and stillbirth in sows. The first 20 days of pregnancy and the 30 days before farrowing are the danger periods for stillbirth and miscarriage, so feeding and management must be strengthened to ensure the safe farrowing of pregnant sows. Create a cool environment by thickening the roof with materials such as straw curtains that have good insulation performance, so as to block the sun's heat radiation, which can reduce radiant heat by more than 40%. At noon when the temperature is above 30°C, water can be sprayed on the roof to cool it down. In addition to opening the north and south
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Duck disease prevention and control requires attention during the transition between summer and autumn
Currently we are in the transition between summer and autumn, with large temperature fluctuations, and various pathogens easily breed and multiply. This is a season when livestock, poultry, fish and other animals are prone to disease. Neglecting prevention at this time can easily trigger disease outbreaks, causing death of livestock, poultry and fish from mass and epidemic diseases, resulting in relatively large losses. Therefore, the symptoms and prevention and treatment methods of common duck diseases during this period are introduced below. 1. Duck plague. It occurs frequently in spring, summer and autumn, with high morbidity and mortality. Prevention: inject duck plague vaccine at 10 to 15 days of age.
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How to treat pig eczema, which occurs frequently in summer
Eczema is a skin disease that occurs frequently in pigs in summer. The main symptoms of acute and chronic eczema are red patches, papules and itching on the skin, and a few cases are accompanied by pustules, oozing, erosion and scabbing. It is especially harmful to suckling piglets. According to practical experience in production, treatment with mirabilite has a special effect. Method: according to the size of the pig and the area of the affected part, take 50-200 grams of mirabilite respectively, add 200-500 milliliters of cooled boiled water, and after it dissolves, apply it to the affected part, 4-5 times a day, or use a clean towel to dip the liquid and wet the affected area,
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Detailed Key Points for Home Care of Phalaenopsis (Moth Orchid) in Spring and Summer
When you buy a flowering plant in spring (March-May), the rising spring temperatures make it a good time to grow the plant. However, the plants sold on the market during this period have been cultivated all winter in production greenhouses with a minimum temperature above 20°C, so the plants are not very cold-tolerant. After purchasing the plant, it should be acclimated: place the pot in a spot where the minimum temperature at dawn is above 10°C; if you have a hotbed or an air-conditioned room, place the pot in the center, apply slight heating, and protect it. During the 1-month adaptation period
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Key Technical Points and Care Methods for Keeping Phalaenopsis (Moth Orchid) Through the Summer
1. Measures: Getting Phalaenopsis through the summer is mainly a matter of cooling, and the following measures should be taken: ① Add a double layer of shade netting to reduce light, which achieves a good cooling effect (a drop of 2°C to 4°C). ② Sprinkle or flood the ground with water. Summer temperatures are very high, but the water just drawn from a well is actually very cold, around 16°C. Therefore, sprinkling or flooding with water can produce an obvious cooling effect. ③ Misting the leaves cools fastest, but the effect lasts the shortest time. ④ Ventilation. On the wall every 5
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