The uneven weight of the same group of pigs on the market causes the following problems:
The use of resources is less efficient and some pigs have to be kept for longer periods of time
Carcass weight variation, inconvenience to slaughter and processing
A study was recently conducted by the Pig Production Development Council and the Ministry of Agriculture and Rural Development to conduct a study at the ARINI in Hillsborough to verify whether the slaughter weight of the herds can be reduced by grouping strategies.
the study
1200 pigs were used in the experiment, and some were homogenously divided into light, medium and heavy body weights divided into three grades. One group was performed at 4 weeks of age and the other at 10 weeks of age. One part is the recombination of the mixture, and the same group includes pigs of various weights. This group of pigs is divided into two stages. All pigs were kept in a male/female population, with 10 in each group and no change in grouping until the 21-week-old slaughter.
Is there any benefit to grouping by weight at weaning?
Grouping by weight at weaning had no effect on reducing the degree of variation in slaughter weight (weight variation ranged from 35 kg in the sub-weight group to 33 kg in the mixed-weight group). This variation is due to the large difference in the rate of weight gain during growth. For example, the weight variation in the same group will increase 6-fold during the growth phase (4-10 weeks of age), and only three-fold increase after the finishing phase (10-21 weeks of age).
Is there no effect of grouping by weight on the degree of variation in the slaughter weight?
After growing pigs were grouped by body weight at the beginning of the finishing phase, the variation in slaughter weight within the group was 7 kg smaller than that of the mixed weight group (the variation range of the weight group was 26 kg, and that of the mixed weight group was 33 kg). Assuming a weight gain rate of 1 kg/day, this way, the time for all pigs to reach the market weight can be up to 1 week earlier.
As expected, different body regroupings at different body weights achieved different slaughter weights at different ages. Heavy body recombination reached the slaughter weight at the age of 20 weeks, the middle body recombination was 21 weeks old, and the light body recombination was 22 weeks old. The mixture recombination reached the market weight on average at 21 weeks of age.
in conclusion
Grouping growing pigs by body weight at the start of the finishing period can improve the efficiency of the finishing facilities.
Future research should focus on how to reduce the degree of variability in the growth stages. In this way, we can group by body weight at weaning, and evenly within the group can obtain body weight at slaughter.
We are a professional manufacturer and exporter in range of sexual stimulant which including sex pill,sex capsule,sensual granules,sex energy tea,also sex coffee.
In past years,our products had exported to Kuwait,Mexico,USA,Norway,AU,Canada and so on.high quality products and fast delivery were appreciated by our clients.
Any interesting items,pls.do not hesitate to contact me.welcome ODM & OEM.thanks and welcome inquiry.
Sex pill,Sex stimulant,sex energy drink,sensual stimulant
Chengdu Jingke Trading Co., Ltd. , https://www.jkherb.com