Pregnant sows need appropriate feed amount
I. Foreword A few years ago, pig farmers in the Midwestern United States observed several farms. One of the purposes was to understand the appropriate feed amount for pregnant pigs. In very large-scale pig farms, the difference in feed yield during pregnancy is not very important, for example, when giving an average of 1 day and 4 pounds (1.8kg) and 5 pounds (2.3kg) or more. The feed fee has a difference of several hundred million yuan during the year. Not only that, but the cumulative number after several years will be very large, and it will become a key to your success or failure. If the pregnant pig is over-fertilized, the first thing that is seen after delivery is the normal physiology that affects the normal consumption of subcutaneous fat due to lack of feed or loss of appetite. The sow is rapidly losing weight because it does not eat feed. Thin pigs are poor in milk secretion, and they will not be estrus due to nutritional ovarian disease after lactation, and cause bad circulation. On the other hand, pregnant pigs that are not fatter have a good appetite after childbirth, but are not too thin (good nutrition). Because they are not too thin and secrete good milk, re-estrus after weaning can be completed within a predetermined time. Comparing the above situation, pigs that are not fatter are indeed better, but the only drawback is that the newborn piglets that give birth have a lower body weight. Piglets that are physically important at the time of delivery are also well developed, and of course the weight after weaning is also large. Piglets that are physically important at the time of weaning are also older at the time of sale. Generally, the weight of piglets at the time of childbirth is more than 1.3kg. It is explained that the piglets are good piglets. It is necessary for piglets in this situation to have a certain degree of fatness in pregnant pigs. The 4 pounds on the 1st is slightly excessive. Feeding during pregnancy is generally not only 4 pounds or 5 pounds in the United States, especially for the quality of heat in the feed. The extent to which the weight of the delivery piglets is raised also has its problems. In the general system, 1.0 kg is used as the lower limit, and in the case where the equipment and feed are given for consideration, the feeding of 0.7 kg of piglets is technically no problem. Second, the physical condition of pregnant pigs (body condition) The body condition scores (BCS) of pregnant pigs shown in Figure 1 in an adult breeding pig farm in the United States are shown in the illustration. (omitted) Japan's breeding sows are more likely to have L × W. There are more synthetic pigs in the United States, and the pigs have different body types. The goal is the same. The figure of physical fitness control, the original British style is 1~10, and the rank is more subdivided. It is not only listed in the range of 1~10, but also in the ranks of 2, 4, 6, and 8. The pig is pulled out. The US Department is divided into 1 to 5 grades as shown in Figure 1. Level 2 in the United Kingdom and Level 1 in the United States, and 8 and 4 are equivalent. Figure 1 determines three factors for the grade of the pig, namely the state of the back fat, the state of the seat bone, and the body shape of the body. The No. 1 system of the pig producing pig has a thickness of 1 cm or less, which is a very thin state. Its seat bone is easy to see with the eyes. The body shape is prominent in the back bone, and the bone helps to reveal the ribs of the bird. The lumbar bone is prominent, and the touch can be judged sharp. The pig's back fat of No. 2 is about 1.3 cm thick and is in a thin state. The seat bone can be easily and correctly touched. Look at its shape, the ribs (loin) are slightly thin, the flank is flat, and there is no fat. The circumference of the tail root is concave. No.3 is an ideal body type with a back fat thickness of 1.5 to 2.0 cm. The seat bone can be touched normally. All the fat is thin and does not seem to be clustered in appearance. No. 4 pigs are slightly fat, and the thickness of the back fat is 2.3 to 2.5 cm. The bones are not exposed. The shape of the body is wide and the legs are thick. There are fat deposits on the front and back of the feet and the hips are round. The pig of No. 5 is in a state of being over-fertilized, and the thickness of the back fat is 2.8 cm or more. The seat bone is not exposed more than No. 4. The body shape is excessively rectangular. From the end of the cheek to the other end, it is very slack, and the part of the front and back of the foot and the part of the back leg are drooping due to a lot of fat. Therefore, it is appropriate to give the amount of pig feed for this type of body. The average feed increase of pigs in score 1 is 0.6 kg on the 1st, 0.4 kg on the score 1.5, 0.3 kg on the score 2, and 0.2 kg on the score 2.5. In score 3, the current amount is continued. The pigs with score 3.5 are reduced by 0.2kg from the current daily dose, and the pigs with score 4.5 are reduced by 0.3kg. 4X4 Winch,Waterproof Electric Winches,Electric Recovery Winches,Automatic Screw Cone Braking Winches JINHUA RUNYE TECH. CO.,LTD , https://www.cnirunwinch.com