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The weight control of the whole brooding and breeding stage of the cherry valley parent breeding duck plays a vital role in the production index of the parental breeding duck. With the progress of the breeding of the Liuhe ancestors in the Cherry Valley SM3 line, there are some changes in the weight control of the parent-generation ducks in the Cherry Valley SM3 line compared with the previous years. The technicians should follow their own The farming practices, etc., are appropriately adjusted to ensure good performance of various production indicators.
1 duckling arrival
The placement and feeding of the ducklings is very important for the survival rate, growth and development and production performance of the ducklings during the brooding period. It must be given sufficient attention in terms of technology, personnel and equipment.
1.1 Brooding temperature management
Depending on the season and facilities, the temperature of the brooding house will reach the brooding requirement (not lower than 32 °C) 24-48 hours before the arrival of the ducklings. As the body weight increases, it will be lowered by 3-4 ° C per week and maintained at 25 ° C. Always observe the distribution and mental state of the ducklings and check if the temperature is appropriate. Do not just look at the temperature display of the thermometer.
1.2 Drink water first, then feed
Two hours before the arrival of the ducklings, drinking water (preferably cold water) with appropriate temperature and multi-dimensional electrolytes and antibiotics is placed in the drinking water system. Regardless of which water supply method and water supply device is used, it is necessary to ensure that each duck can easily drink water; it must be ensured that each duck has sufficient water for 3-4 hours before feeding. Especially in the summer hot season and long-distance transport of ducklings, we must pay special attention to this. In the first 3 days of brooding, you must do your utmost to ensure that each duck is convenient to get enough water and proper amount of feed, which is essential for the early development of ducklings. If the drinking water is insufficient in the early stage, it will seriously affect the subsequent growth and production indicators during the laying period.
2 0-28 days old feeding
In principle, the feeding amount of 0-28 days old is based on the standards recommended by the manual, and is flexible according to the weight situation. The amount of 0-3 days old is suitably higher, allowing the ducks to approach the free-feeding so that each duck can get the feed they need. Under normal circumstances, the male duck is higher than the standard 3g, and the female duck is higher than the standard 2g to achieve the above feeding state. Since the digestive organs and digestive functions of the ducklings are relatively weak at this time, it is important not to allow the ducklings to eat too much. The number of feedings in the first 3 days is preferably not less than 8 times/day, and the number of feedings is gradually reduced after one week; it can be referred to 6 weeks/day, 3 weeks old 4 times/day, 4 weeks old 2 times/ The speed of the day is gradually reduced, and finally the transition to a feed.
The timing of using one feeding is determined according to the specific conditions such as the weight of the ducks, the feeding speed, the time of eating, the management level, and the proficiency of the employees. In general, a feeding method should be used from 3-4 weeks of age, which will help to improve the uniformity. When using the feeding method, the speed of spreading should be fast and uniform, the area should be large enough, and the duck body weight should be expanded in time to ensure that the duck has enough area to run.
The adjustment of the amount of feed should be based on the weight of the duck. In the first 4 weeks, it is best to have a weight test every night or the next morning at approximately the same time and relatively fasting. If the group is large, it is also possible to use a small group weighing method, that is, to weigh a plurality of ducks at a time, and to obtain daily weight gain. According to the increase in body weight, refer to the adjustment of the amount of material in the previous days to determine the amount of feed on the next day. Paying attention and adjustment to weight and volume as early as possible will be of great help to subsequent weight control and uniformity improvement.
3 Determination of the amount of material in the 5th week
The principle is based on 4 weekend weights.
(1) When the average weight is higher than the standard weight, or when the weight gain is large, the 24-day-old feed is used.
(2) When the average weight is lower than the standard weight, or when the weight gain is small, the 28-day-old feed is used.
(3) The average body weight is consistent with the standard body weight, and the weight gain is ideal, using a 26-day-old feed.
Note on the determination of the amount of material in the 5th week:
(1) The level difference of the feeding amount is divided as much as possible, which is helpful for improving the uniformity.
(2) Determine the amount of material in the 5th week to pay attention to the growth rate of 3-4 weeks of weight, that is, the delay of the feeding effect.
(3) Weighing should be carried out before feeding in the morning of 32 days old, and the amount and feeding plan determined by 29 days old should be adjusted according to the weighing situation.
4 6-18 weeks of determination of the amount of material
Principle: Determine the amount of feed based on weekend weight and weekly weight gain.
(1) The average weight is high and the weight gain is large. Firstly, the weighing data and the feeding amount of the previous week are checked. If there is no significant deviation in the data, the current material amount is maintained, and the body weight is gradually approached to the target weight.
(2) The average weight is low, the weight gain is small, and the daily feeding amount is increased by 5-10g/only.
(3) The average body weight is consistent with the target body weight, and the weight gain is close to the standard, and a small amount (3-5 g/head) is added to maintain the growth rate.
6-18 weeks of material determination considerations:
(1) The level difference of the feeding amount can be appropriately divided into several, which is helpful for improving the overall uniformity.
(2) When the weight gain situation is different from the expected target, the weighing will be increased once in the middle of the week (week 3 or week 4) next week, and the material amount will be corrected in time according to the weight gain situation.
It is important to note that if there is little difference between body weight and feed rate at the end of the 4th week, it is recommended that the feeding range of 5-8 weeks old is not more than 3g, and the male duck is not more than 4g; 9-12 weeks of weekly Do not exceed 5g for the feeding duck and 7g for the male duck. It is necessary to strive for smoothness in feeding every week. In particular, it should be noted that the feeding in the early stage should not be too fast. Otherwise, it will lead to the problem of “excessive weight, unwilling to feed, and insufficient weight gain in the week†after 10 weeks of age. Feeding at 6-8 weeks of age is too fast and can lead to an increase in the incidence of lameness. On the one hand, it is necessary to make the weight of the breeding ducks meet the standard as much as possible. On the other hand, it is more important to ensure that the weekly weight gain reaches the standard.
The feeding range is closely related to the quality of the feed. When the feed quality is not good, the amount of feed may not reach the expected effect. If you do not achieve the expected weight gain or weekend weight for several weeks, pay attention to check the quality of the feed, including energy, protein and other major nutrients and powder content. If the feed rate of the feed is too high, it will result in waste of the feed (especially when feeding on the litter), resulting in lower actual feed intake than the designed feed intake. If the weight exceeds the standard and the feed intake cannot be greatly reduced, the next item number can be replaced as appropriate.
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