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What are the evaluation indicators for pig reproductive performance?
The reproductive performance indicators of pigs mainly include the following seven: (1) Litter size. Litter size has two indicators: total number born and number born alive. Total number born refers to the total number of piglets in the same litter within 24 hours of birth, including stillborn fetuses, mummified fetuses and deformed pigs; number born alive refers to the number born
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Dairy Cow Controversy: Dairy Farmers Hope Their Efforts Are Not Erased, Animal Rights Group Calls for Animal Welfare Indicators
Dairy Cow Controversy"Dairy Farmers: Do Not Overgeneralize and Erase Dairy Farmers' Efforts; Animal Rights Group: Government and Dairy Industry Need to Establish Animal Welfare Indicators
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What are the commonly used quality indicators for garlic powder?
Garlic powder Garlic powder 1. Material selection: Select garlic harvested when the leaves are yellow and the stalks are withered, with large heads, white clove flesh, and no pests, diseases, or mechanical damage as the raw material, and remove garlic with small heads, pests or diseases in the clove flesh, or mechanical damage. 2. Soaking: Wash the selected garlic with clean water, separate it into cloves, then soak it in cold water for about 1 hour, rub off the skin, scoop out the garlic cloves, and drain off the remaining water. 3. Pulping: Put the drained garlic cloves into a pulping machine or grinder for crushing and pulping. When pulping, add 1/3 clean water to the garlic cloves; after pulping, use coarse gauze
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How to store garlic scapes? Indicators and methods explained in detail
I. Storage indicators: 1. Temperature: -0.51°C; 2. Gases: O2 concentration 2-3%; CO2 concentration 6-8%; 3. Humidity: 9095%; 4. Freezing point: -0.7-0.8°C; 5. Gas injury thresholds: O2<1%, CO2<12%; 6. Storage period: 4-10 months. II. Storage method: controlled atmosphere storage. III. Technical process: timely harvest (without
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What quality indicators must pear nursery stock meet when leaving the nursery?
Pear nursery stock grading indicators Grade Item Grade 1 Grade 2 Cultivar and rootstock type Pure and true Roots Number of lateral roots More than 4 More than 3 Main root length More than 10 cm Lateral root length Not shorter than 15 cm, spreading Stem Rootstock stem section length Less than 10 cm Height More than 130 cm More than 100 cm Thickness (at 5-10 cm above ground) More than 1.2 cm More than 1 cm Rootstock treatment The rootstock stub must be cut off, the rootstock has no injury Union healing degree Completely healed Number of plump buds within the shaping zone More than 6 Note: Annual nursery stock yield per hectare below 150,000 plants. In the Beijing area, the pear rootstock should be Pyrus betulifolia or Pyrus ussuriensis.
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What are the specific appearance grade indicators for pear fruit?
Pear appearance grade specification indicator items: Special grade, Grade 1, Grade 2. Basic requirements: fully developed, mature, fruit intact and good, fresh and clean, no off-flavor, no abnormal external moisture, no puncture wounds, no insect-damaged fruit and no disease. Color: has the color that this variety should have when mature. Single fruit weight (g): the single fruit weight grade requirements for major pear varieties are shown in Appendix A (normative appendix). Fruit shape: regular, relatively regular, may have defects, but no deformed fruit. Fruit surface defects: 1) Bruising and compression injury: none, none, slight bruising and compression injury allowed, area less than 0.5 cm2. 2) Abrasion injury: allowed area less than 0.5 cm
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What are the indicators for judging frost damage in citrus?
Citrus frost damage is a major disaster in citrus production in China, and it is especially a major threat to citrus production in the middle and lower reaches of the Yangtze River and areas to the north. Large fluctuations in citrus yields are often directly related to low-temperature frost damage during the overwintering period. The meteorological indicators of citrus frost damage, classified by the degree of occurrence, can be divided into -5...
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What are the morphological indicators of strong rapeseed seedlings?
Morphological indicators of strong rapeseed seedlings
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What are the growth and appearance indicators for high-yield sesame?
Growth and appearance indicators for high-yield sesame
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What are the morphological indicators for each growth stage of sesame
Morphological indicators for each growth stage of sesame
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