The reproductive performance of the sow herd on the pig farm is an important factor in determining whether the economic benefit is good or bad. In order for the herd to play a stable and high reproductive performance, the raising of the gilt is extremely important. However, many pig farms do not pay enough attention to gilt rearing. Feeding pregnant pigs to pregnant sows that have not been pregnant has resulted in problems such as lack of estrus or heat, and low pregnancy rates.
Physiological characteristics of gilts and pregnant pigs are different, and nutritional standards are also different. The gilt is in a stage of growth and development with high nutritional requirements. It requires 18% of protein during the growth period, energy of 12.5 megajoules per kilogram, 16%-17% of protein in the later period, 11.7-12.1 megajoules per kilogram of energy, and less than 7% of crude fiber. . Normally, pregnant pigs need an energy level of 11.5-11.7 MJ/kg, protein is about 14%, lysine is 0.55%-0.6%, calcium is 0.95%, available phosphorus is 0.5%, and 7%-15% of crude fiber is fed on a daily basis. grain. The sows can get some energy through the hindgut fermentation, can also increase satiety, prevent constipation, and help the fetus grow. Therefore, gestational sow material cannot be used in place of gilt sow material during production. Should be prepared to adapt to local conditions, both economical and full price or purchase a reliable gilded sow special feed, in order to give full play to its production potential and create greater economic benefits.
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