Pig Nutrition | Controlling the weight of young sows and the thickening of the mother pig life – Yangshuo – China Animal Husbandry website – a useful animal husbandry website
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Modern sow can provide more than 70 wear pigs in their life.
Due to genetic improvement, modern sows can provide more than 70 wear pigs in their life. In each pig, there will be such a sow. However, sows with the same genetic potential, due to the polarity of the proliferation and the damage of the limb, it is eliminated in advance. In most pigs, the number of pigeons in the second child is lower than the first child, so the proportion of sows that provide more than 70-year-old pigmented pigs in the pig group will increase the production level of the whole group, and will also reduce the sow in advance. proportion. The weight and back of young sows are important indicators related to the future reproductive performance. In order to make youth sows reach ideal in childbirth, this paper will focus on the nutritional needs of young mother pigs.
The importance of young sow body weight and back hunger
The importance of reserve mother pig breeding management is no longer described here. Relevant this issue, you can see Gill (2007), Amaral Filha Waiting (2010) and Johnson et al. (2010). Foxcroft (2002) believes that in general, the rear sow should be in the second or third atmosphere, with a body weight to be breed at about 140kg.
The weight and back thickening of the resembled mother pigs should be 200kg and 18 – 20 mm, respectively. Many studies have shown that if the head sow (rearing sow) is fat (back to the sow, the thickness> 22 mm), the fish in the lactation period will decrease, the weight loss of the lactation period will be more, next The reproductive performance of the tire will be reduced. Compared to those backup sows of 200kg, the weight of the heavy weight is poor in the next childhood reproduction during childbirth. Study of Quesnel et al. Suggest that the weight of 240kg after childbirth is better reproduced in stress compared to 180 kg rearing sows, and additional feeding costs should also be considered.
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In order to determine the need for nutrients and energy of the sow, it should be known that the optimal weight and back of the sow.
Figures 1 and 2 show the weight and back of the Nutreco research farm 1-6 fetal sea polo. Through the pregnancy and the end of the body weight and the thickness of the back, we can estimate the amount of protein and fat in the maternal pig in pregnancy. At the same time, weighing is also an important indicator for determining energy maintenance needs. As shown in Figure 3, the maintenance of pregnancy needs to account for 70% of the entire pregnancy energy.
In addition, energy is also necessary for sows and fetus growth, and the growth of the fetus is mainly in the late pregnancy (Figure 4). Using the pregnancy model of the mother pig can formulate the feeding plan according to the time of fetal, breeding.
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2017-12-12 09 : 57 Upload Fig. 3. The proportion of energy requirements for maintenance, maternal growth and endomes in the uterus.
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Figure 4. Weight weight of the fetus, placenta, fetal fluid and breasts in pregnancy
The difference between the two sows and the first maternal pig difference , although there is only one breeding cycle, but the nutritional status of the reserve sow and the first fetal mother pig are very different. The resembled mother pigs have a good nutrient state, and the first sow is different from the loss of weight and back thickness due to different feeding and lactation in lactation. Studies conducted by KIM et al. (2001) show that during breastfeeding, the sow not only consumes muscle protein, but also consumes a large amount of protein (Figure 5). Therefore, the feeding strategy of the first maternal pig pregnancy is also different from the rear sow. Hoving et al. (2011) Recent studies have shown that the feeding level of the first sow in the early stage is conducive to increasing the number of pretty children (Fig. 6), and the effect of the addition of the sow is added in the early stage of pregnancy. Obvious (Jindal et al. 1996; Quesnel et al. 2010). The study of Hoving et al. (2011) pointed out that the rapid recovery of weight recovery after the lactation period is conducive to increasing the reproductive performance of the next child.
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Figure 5. Loss of carcass liver (Liver) and reproductive tract in lactation. (Kim et al. 2001).
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Figure 6. Feeding amount after 30 days after breeding of the first sow (0.5kg and 3.3kg, respectively), the next child The influence of production
(HOVING et al. 2010)
Conclusion: Modern sows have genetic potential to produce high-nests, in order to achieve this goal, should pay special attention to rear And the energy and nutrition of the first sow.
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