Selectes 36 head close breeding age, parents generation there was no significant difference between reproductive performance, grew up healthy first farrowing sows. Grew up the first farrowing sowsduring pregnancy and lactation 28 days in three different levels of protein,energy, grain feeding on its reproductive performance. Protein in the diet energy than under the condition of invariable, respectively is set to the lowenergy low protein 1 (group 1) based diet (control group), and high energy and high protein (group 2) three different energy levels of proteins. Test
results show that: pregnancy diet protein energy levels to grow up first farrowing sows, number born alive litter size, birth weight influence is significant (P < 0.05), but no significant effect on the survival rate of piglets (P > 0.05). Pregnancy and lactation ration of protein energy levels for before weaning piglets' average daily gain has obvious influence.
@暮雨微然 。。。