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Effect of different levels of energy in the ration on productivity and breeding capacity of gilts and sows. 5. Effect of different levels of energy in the ration of gilts on signs of oestrus, development and survival of embryos at the 21st and 40th days of pregnancy



Effect of different levels of energy in the ration on productivity and breeding capacity of gilts and sows. 5. Effect of different levels of energy in the ration of gilts on signs of oestrus, development and survival of embryos at the 21st and 40th days of pregnancy



Zbornik Radova Institut za Stocarstvo Novi Sad 5: 107-127



5. Two experiments were with white meat gilts, 108 and 75 divided in each case into 3 groups. From about 160 days of age all were given 2.6 kg feed daily, supplying 8450 kcal; after the second oestrus the mean energy intakes were restricted to 8450, 6760 and 5070 and after mating to 8200, 6560 and 4990 kcal, increased 25 days before expected farrowing to 9600, 7680 and 5760 kcal and during lactation to 16 400, 13 120 and 9840 kcal.

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Related references

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