The good coefficient of nutritional status of pigs is 142, the medium coefficient of nutritional status is 156, and the poor coefficient of nutritional status is 162.
The body length starts from the middle of the middle line of the two ear roots and is measured along the back with a tape measure to the first natural wheel pattern of the tail root. Standing posture is normal (the limbs are upright and the collar line is flush with the chest line). Fix the endpoint of the tape measure on the occipito-atlantoaxial joint with the left hand, pull the tape measure with the right hand and fix it at any point on the dorsal midline, then replace the position set by the right hand with the left hand, and then tighten the tape measure with the right hand until it reaches the tail root, that is, measure the body length.
Chest circumference: measure the vertical circumference of the chest with a tape measure at the back edge of the scapula, and the tightness should be subject to the tape measure sticking to the fur naturally.
Extended data:
Formula for calculating pig-grain ratio, formula for calculating various pig feeds.
Average daily gain: average daily gain = (slaughter weight-shed weight)/feeding days.
Feed-meat ratio: feed-meat ratio = total feed consumption/total weight gain.
Cost of Jin pig: cost of Jin pig = feed-meat ratio * feed price.
Feed price: feed price (5% premix) = corn price * corn content+soybean meal price * soybean meal content+bran price * bran content+premix price * premix content.
Feed price (concentrate) = corn price * corn content+concentrate price * concentrate content+bran price * bran content.
Feed crude protein content: feed crude protein content (concentrated feed) =8.5* corn content+14* bran content+concentrated feed crude protein content * concentrated feed content.
Feed crude protein content (5% premix) =8.5* corn content+14* bran content +44 (bean cake 4 1)* soybean meal content +5*5% premix protein content.
Feed digestible energy content: feed digestible energy content (5% premix) =3.5* corn content +2.46* bran content +3.5* soybean meal content +5*5% premix energy content.
Digestible energy content of feed (concentrate) =3.5* corn content +2.46* bran content+concentrate energy content * concentrate content.
Feed lysine content: feed lysine content (5% premix) =0.2* corn content +0.47* bran content +2.5* soybean meal content +5*5% premix content.
Feed lysine content (concentrate) =0.2* corn content +0.47* bran content+concentrate lysine content * concentrate content.
Total weight gain cost: total weight gain cost = weight gain feed cost+piglet cost sharing+drug cost sharing cost.
Profit: profit = (pig price-total weight gain cost) * total weight gain quantity.