The inhomogeneity of slaughter pigs is caused by many reasons, such as season, management, nutrition, feeding strategies, breeds, environment, sex, and health. The more energy put into the finishing pigs in the later period, the higher the uniformity of the slaughter pigs.
How is the unity of your pigs?
Understanding and mastering the unity of the herd is very important. You may need at least 3 months to observe and record the following information:
1, the number of overweight pigs
2. The number of unqualified pigs
3. The number of pigs without weight survey
4, the number of standard weight pigs / the total number of survey pigs
Ideally, the number of standard weight pigs/total number of surveyed pigs should reach 85%. At the same time, it should be noted that the survey should be conducted during the normal production period. It is best to avoid diseases, high fever periods, and holidays such as Christmas and Spring Festival.
Through this survey, you will find the main problem of your piglet uniformity? If you are not very sure, you can discuss further with the feed company or the slaughterhouse to confirm the main problems with the herd.
set a goal
1. Record your survey results, calculate the average weight, and combine the requirements of the pig buyer to determine the final target weight.
2, different groups of pigs, different buyers, the target weight should be set different
3. Producers should recognize the difference between the actual weight and the target weight of the pigs
4. Introduce normal weight range with hog buyer or pig raising committee
5, let the keeper keep abreast of the slaughter weight, target weight, easy to make adjustments
6. Improve the management of weaned piglets and growing pigs to improve the uniformity of the finishing pigs
Improve management measures
Conventional weighing
Develop a routine weighing system, such as weighing at the time of transfer, in order to obtain accurate data. This data will help you understand the uniformity of the herd and master pigs that are overweight and not up to standard. Farm formulators and veterinarians should make timely adjustments based on these circumstances.
Timing weighing
In addition to routine weighing, you can also select a certain number of pigs per week to weigh, to determine the uniformity of the herd. This method is convenient and quick, so that you can grasp the situation in time. Of course, the selected pig bar should be representative, so as to be statistically significant.
gender
1, boar growth speed, lean ratio higher than the sow
2. Set different target weights for boars and sows
3. It is better to feed boars and sows separately and adjust their diet formula accordingly.
Diet and feeding
1. Inappropriate dietary nutrition will increase the difference between the actual weight of the herd and the target weight. The formulator should consider the target body weight requirement of the finishing pig.
2. Maintaining the same raw materials can reduce the difference in hog weight between commercial pig farms and home pig farms
3, feeding according to species, health conditions
4. When eating freely, ensure that the size of the feeding slot is appropriate. During the initial period of fattening, it should be ensured that the feeding position of each pig is 50mm and that it should be increased to 75mm later in the fattening period.
5. When limiting feeding, it should also ensure that the feeding trough is large enough. At this time, during the early period of fattening, it should be ensured that the feeding position of each pig is 200mm, and it should be increased to 300mm in the later period of fattening.
6. When restricting liquid feeding, all pigs should be allowed to eat at the same time.
In addition, you also need to remember the importance of water, because drinking water can promote feed intake. Water hygiene, water speed, and the number of drinking fountains are three important factors that affect the amount of water the pigs drink. Equal drinking opportunities can also increase the uniformity of finishing pigs. Under normal circumstances, the water speed of pigs for finishing pigs should be maintained at 1-1.5 l/min, and the amount of drinking water for finishing pigs should be maintained at 5-6 l.
Phase review
After grasping the reality of the herd, the target weight was set according to the method of setting the target weight as mentioned above, and the weighing was evaluated again after 3 months.
genotype
If your gilt is a growing fattening pig from your field, the need for seed retention will affect your weight review results and ultimately reduce slaughter of the slaughter pigs. For these mothers that are reserved for breeding, it is best to keep them separately.
surroundings
1. Harsh environment will reduce the uniformity of finishing pigs
2. Observe the behavior of the pig and determine if there is a problem
3. When implementing the all-in, all-out system, clean and disinfect the barracks
4, to ensure that the barn building is in good condition, and the normal operation of ventilation equipment
5, improper feeding density will affect the growth and weight assessment.
Among them, high stocking density will lead to heat stress, unequal eating and drinking opportunities, delay in slaughter, and increased fighting. Low stocking density can also lead to cold stress, especially in the areas with poor natural ventilation and poor insulation properties.
health
The better the health status, the better the pigs can exert their growth potential. Improving the health of the pig can increase the growth rate, reduce the weight span, and reduce the number of unqualified pigs.
Seasonal factors
Under normal circumstances, the slaughtered pigs in summer have the lowest body weight, and gradually increase after autumn. You can consult local pig associations or industry experts to find solutions.
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