Experimental study on the performance of PIC pig

Introduction: Taking pic pig, a five generation mating line popularized in Hechuan City, as the research object, the production performance was studied through production practice The results showed that pic pig had excellent reproductive performance, and the annual productivity of sows was 26.2 Pic commercial pig had the characteristics of fast growth, strong disease resistance, high feed conversion rate, slaughter rate and lean meat rate, and was the first choice for the development of meat type pigs Key words pic pig production performance experiment quote: China is the third largest pork export country in the world, but the export volume accounts for a small share of China's pig production This is because: first, the average carcass weight of China's out of the market pigs is only 75kg, which is much lower than the slaughter weight of some developed pig raising areas in Europe and America; second, the local pig breeds in China generally have the disadvantages of strong fat production and low meat production, and the retail price ratio of fat and lean meat in Hong Kong market is 1:20 Local pig breeds are not only difficult to meet the domestic and foreign market demand for pig lean meat, but also the economic loss caused by excessive fat consumption of refined feed and forced refining soap is even more amazing Therefore, the development of meat pigs is the inevitable trend of pig industry in China and has a broad market prospect Hechuan, as a big agricultural city, has always been a breeding base for pigs, sericulture, aquatic vegetables and other agricultural products In recent years, pig industry has become the pillar industry of Hechuan This is due to the promotion of PIC five line pig breeding in Hechuan City Pic parent pig is developed by Chongqing Dazheng animal husbandry technology Co., Ltd., a national leading enterprise It not only improves the disadvantages of slow growth rate, low feed return rate, low slaughter rate and carcass lean meat rate of local breeds, but also inherits the advantages of strong fecundity and good meat quality of local breeds In order to test all aspects of the production performance of PIC pigs, the following experiments were carried out in Wuyang animal husbandry demonstration farm of Hechuan City: 1 Determination of reproductive characteristics of PIC sows: (1) test objects: 10 sows were randomly selected from the sows, including 2 sows (9529, 9527), 6 sows in the middle-aged and 2 old sows (6074, 7080) (2) test items: 1 Fecundity nipple number, total litter size, litter size, survival rate, litter weight (total litter size, weighing at 8 hours after delivery), and newborn weight (average litter size) The test results are shown in Table 1: Table 1 Fecundity test of PIC sows (omitted) From table 1, it can be seen that the number of nipples of PIC sows is between 12 and 14, that is to say, each sow can carry at least 12 piglets; the average number of piglets is 12.3; the average number of live piglets is 11.3; the number of stillborn and mummies is about 0.8-1.2; the birth weight of piglets is about 750-1100g 2 Comprehensive reproductive performance of PIC sows number of weaning litter: number of piglets per sow at weaning (including self-produced and surrogate) lactation capacity of sows: weaning weight of weaning litter weight of sows (including self-produced and surrogate): average number of individual weight weaning piglets per litter at weaning: number of survival at weaning of self-produced piglets per sow Weaning survival rate: percentage of weaning live piglets in the number of live piglets during lactation: difference between weaning weight and birth weight, number of litters at 60 days old, birth weight of sows at 60 days old: weight loss during lactation when sows are in the delivery room: difference between birth weight and birth nest weight, and weight of sows at weaning time Test results are shown in Table 2: Table 2 Note: the average lactation capacity of PIC sows is 76.3, Among them, the lactation capacity of the old sows and the first sows is low, while that of the old sows is more than 80kg; the average weaning weight of the piglets is 6.98kg; the survival rate of weaning is 94.7%; the average individual body weight of 60 days is 20.7kg; the average weight loss of the sows during the lactation period is 73.6kg; the rate of the fat pigs coming out of the market is 95.4% (3) experimental conclusion: from the above experiment, we can get the annual productivity (PN) of PIC sows The formula is as follows: (omitted) Note: g = gestation period (114 days); L = lactation period (28 days); IWC = the interval between weaning and breeding (7 days); LS = the number of live piglets in the first litter (11.3); PM = the mortality rate of piglets from the first litter to weaning (0.53%) The annual productivity of PIC sows is 26.2 That is to say, PIC sows can provide 26.2 piglets every year It can also be seen from the above experimental data that pic commercial pigs have strong disease resistance and survival rate Each sows can provide 25.0 pigs each year 2 Determination of production traits of PIC pigs (1) test subjects: 10 piglets with similar body condition were selected from the piglets transferred from the nursery (II) test items: 1 Growth rate (see Table 3) daily gain = (outgoing weight - initial weight) / feeding days From table 3, it can be seen that the daily gain of PIC pig is about 750-1000g; the average daily gain is 863g / d Table 3 growth rate of PIC pig (omitted) 2 Feed conversion rate to weight ratio = total feed consumption / (total weight out of the market - initial total weight) table 4 Feed feeding amount of PIC pig in different finishing stages (omitted) 0 Feed to weight ratio = (450 + 840 + 1080) / (1076-199.7) = 2.70:1 3 Slaughter rate table 5 Measurement record of slaughter rate of PIC pig (omitted) According to table 5, the slaughter rate of PIC pig is about 70% ~ 75%; the average slaughter rate is 71.8 4 Lean meat rate table 6 The measurement record of lean meat rate of PIC pig (omitted) can be seen from table 6: the lean meat rate of PIC pig is basically between 63% and 68%; the average lean meat rate is 65.9% The above experiments showed that pic pigs had (1) strong fecundity, and the annual productivity of sows reached 26.2; (2) high lean meat rate The lean meat rate of commercial pigs is over 65% (3) High growth rate, high feed utilization rate (4) high slaughter rate and lean meat rate Reference: pig production, edited by Chen Runsheng, China Agricultural Press, 1999