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How to identify a pigeon's age? Master these methods to judge accurately
How to identify a pigeon's age
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Has the sow finished farrowing? Teach you an accurate method to judge the end of farrowing
How to judge whether a sow has finished farrowing
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Fish species quality identification methods, teaching you to accurately select high-quality fish species
1. Check whether the size is uniform. For the same species of fish, those with uniform size when harvested from the pond generally have a relatively robust constitution. 2. Check whether the fish body is glossy. Robust fish species have a layer of mucus on the body surface to protect the scales and skin from pathogen invasion, so the body surface shows a certain gloss. However, diseased, weak, or injured fish species lack mucus on the body surface and have no gloss, or some diseased fish have excessive mucus on the body surface and also lose their gloss. 3. Check the body color of the fish species. The body color of the fish species reflects their quality. The body surfaces of high-quality fish species are respectively:
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How to identify a sick sheep? Ten methods to help you judge accurately
First, look at the eyes. A healthy sheep has nimble, bright, spirited eyes that are clean and moist. A sick sheep has dull eyes, drooping eyes with no spirit, and slow reactions. Second, look at the ears. A healthy sheep often holds its ears upright and flexible, while a sick sheep keeps its head low with drooping ears. The ears do not move. Third, look at the coat color. A healthy sheep has a neat, glossy, elastic coat. A sick sheep has a messy, lusterless coat. Fourth, look at rumination. A healthy sheep, regardless of feeding, starts ruminating 30 minutes later for 30-40 minutes, and ruminates 6-8 times in a day and night. A sick sheep ruminates less or stops. Fifth, look at movement. A healthy
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How can easily confused species of premium fish be accurately identified?
With the development of the socialist market economy and the improvement of people's living standards, fisheries production has taken a new leap forward. In particular, in recent years the development of premium fish has been extremely rapid. However, because some premium fish are extremely similar in appearance and rather difficult to distinguish, this has caused certain difficulties for farmers and consumers in purchasing and identifying them. The identification methods for currently easily confused species of premium fish are presented below for reference. 1. Yellow catfish, long-barbel yellow catfish, darkbarbel catfish, and glossy yellow catfish. Among these four fish, the pectoral fin hard
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