What is flushing when management of replacement gilt is concern?

Flushing gilts (feeding a high energy or feed intake level prior to breeding) that were previously restriction-fed increases ovulation rate to the level that would be obtained if the gilt was maintained on a high level of diet intake [8,9]. Flushing before breeding is not necessary for full-fed gilts. Regardless of the management program, after mating gilts should be limit-fed at approximately 4 lb./day for the first 7 to 14 days after breeding to prevent increased embryo mortality. During gestation, gilts should be fed to hit a target weight for farrowing.Replacement gilts are essential for maintaining the productivity of the sow breeding herd. Loss of sows from the breeding herd will result from failure to breed, to become pregnant, poor productivity, and structural problems with feet and legs. Producers must plan for current herd specific replacement rates that may average 50%.



What is flushing in gilt?

After detection of first heat, flushing (i.e. minimum 3.4 kg of feed/day) should be initiated at 5–7 days prior to expected service in second heat, and feed allowance should be decreased to 2.2-2.4 kg/day when the gilts are serviced in order to maximize litter size.

What is flushing of sows?

Providing an extra 2 lb./day for two weeks before breeding, commonly known as flushing, has been shown to increase litter size as much as one pig per litter. After breeding, feed intake for sows and gilts in good body condition should be reduced to 4 or 4.5 lb/day or the level they will be fed throughout gestation.

What should I look for in a replacement gilt?

Gilts should be chosen for long-term good mothers. There are four selection criteria: structure, underline and vulva, size and fitness, and litter size and weight. Bone structure and feet/leg structure are indicators of whether a gilt will be durable and sound.

What is the recommended amount of feeds for replacement gilt or boar at normal condition?

Reproductive performance and longevity can be improved by feeding higher Ca and P concentrations to gilts. The recommended dietary nutrient requirements for replacement gilts are a minimum of 0.8% Ca (18 g daily), 0.7% total P (15 g daily), and 0.4% available P (Table 2).

Is Flushing gilts before breeding necessary?

Flushing before breeding is not necessary for full-fed gilts. Regardless of the management program, after mating gilts should be limit-fed at approximately 4 lb./day for the first 7 to 14 days after breeding to prevent increased embryo mortality. During gestation, gilts should be fed to hit a target weight for farrowing.

What is the purpose of replacement gilts?

Replacement gilts are essential for maintaining the productivity of the sow breeding herd. Loss of sows from the breeding herd will result from failure to breed, to become pregnant, poor productivity, and structural problems with feet and legs.

What can I expect if I Flush my gilts?

Butterworths, London. If I flush my gilts what can expect in improved reproductive performance? Flushing gilts (feeding a high energy or feed intake level prior to breeding) that were previously restriction-fed increases ovulation rate to the level that would be obtained if the gilt was maintained on a high level of feed intake.

What are the environmental variables that affect gilt pool management?

Gilt pool management can be influenced by environmental variables that can affect the fertility and development and effective management must anticipate variation in the expected responses over seasons. Since final selection as “breeding eligible” is below 100%, the pool size must be increased to account for fertility and structural failures.

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