What are the production indicators commonly used in pig farm management?

Production indicators commonly used in pig farm management are as follows: (1) Number of farrowing farms: total number of farrowing beds in delivery rooms. Number of adult sows on hand: multiparous sows at the beginning and after breeding. Number of reserve sows: sows that have been selected (self-bred or purchased) and have not been bred. Number of piglets in delivery room: piglets that have not been transferred out of the nursery after birth. Number of piglets in nursery: the number of piglets before being transferred from nursery to fattening house. Number of pigs in growth and fattening period: after the nursery is transferred to growth and fattening house, choose the pigs before reserve. Number of pregnant sows: sows that have not returned after mating, miscarried, had empty fetuses and delivered. Number of lactating sows: the number of sows that have not been weaned after delivery. Average weaning age of sows: lactation days of sows. Average feeding days in nursery: days of feeding pigs in nursery. Average slaughter age of medium-sized pigs: average slaughter age of growing and finishing pigs sold by medium-sized pigs. Average feeding days in growing and fattening houses: the number of days for pigs to feed in growing and fattening houses.

(2) Breeding index: the number of new sows: the number of transferred sows (seed selection, seed retention and seed purchase). Number of eliminated sows: including the number of eliminated reserve sows and adult sows. Number of sow deaths: including dead reserve sows and adult sows. Mating number of reserve sows: the number of mating heads in estrus each time from the beginning of mating to the delivery of the first child. Number of mating heads of adult sows: the number of mating heads of all adult sows after the first birth. Compound number: the number of sows bred after multiple pregnancy, abortion and empty fetus. Number of early abortions: Abortion occurred within 70 days after mating (inclusive). Number of late abortions: 70 days after mating to 1 10 days. (3) Delivery index: the number of litters of multiparous sows: the number of litters of adult sows with more than 2 fetuses (inclusive). Litter size of primiparous sows: litter size of reserve sows. Total number of live piglets: the total number of piglets used for feeding after birth. Total stillbirth: the total number of stillbirths during childbirth. Total number of mummies: the total number of mummies transported. Total number of eliminated piglets: the total number of deformed weak piglets that were not fed after delivery. Number of piglet deaths in delivery room: piglet deaths in delivery room were eliminated. (4) Weaning index Weaning litter number: the number of weaned sows. Number of weaned piglets: the number of piglets weaned at the same time after weaning. Average weight of weaned piglets: average weight of weaned piglets. (5) Growth and fattening refers to the number of deaths in the growth period: the number of deaths of small and medium-sized pigs from seed conservation to growth period to about 60 kg or large pigs. Number of deaths in fattening period: the number of deaths in fattening period of large pigs of about 60 kg or more. Number of piglets slaughtered: number of piglets slaughtered under 25 kg (inclusive). Sales quantity of medium-sized pigs (breeding pigs): sales quantity of growing and finishing pigs between 25 kg and 70 kg (inclusive). Sales quantity of big pigs: sales quantity of growing and fattening pigs above 70kg. (6) Calculate the number of live births = the total number of live births/(the number of primiparous sows that have been spared for dozens of times) The number of stillbirths = the total number of stillbirths/(the number of primiparous sows that have been spared for dozens of times) The number of fetal mummies = the total number of mummies/(the number of primiparous sows that need to be delivered+the number of primiparous sows that have been delivered) The number of eliminated piglets = the total number of eliminated piglets/(the number of farrowing sows+the number of primiparous sows) Number of miscarriages of primiparous and multiparous sows on day 0/total number of primiparous and multiparous sows in mating week * 100% The delivery rate in mating week = number of primiparous and multiparous sows delivered in mating week/. Number of piglets weaned per sow per year: During 12 months, the average number of piglets weaned per sow. For large-scale pigs, the average number of weaned piglets in the whole group is usually calculated according to 1 month, March and June.