Abstract
Effects of the Age of Newborn Pigs Receiving an Iron Injection on Suckling and Subsequent Nursery Performance and Blood Criteria
Highlights
Young pigs have more rapid growth rates that can lead to greater body blood volume.4 Because of this rapid growth rate and sow colostrum containing low levels of Fe, newborn pigs are more susceptible to developing iron deficiency in the first week of life.5 Due to this, intramuscular (IM) administration of 200 mg of Fe after birth is common in the swine industry and it is well established this practice prevents iron deficiency and anemia.6 there are discrepancies in the optimal time after birth to provide the Fe injection to maximize growth and hematological criteria
A total of 324 newborn pigs (DNA 241 × 600, initially 3.56 ± 0.10 lb body weight (BW)) were used in a 80-d study evaluating the effects of Fe injection timing after birth on suckling and subsequent nursery pig performance and blood criteria
GleptoForte (Ceva Animal Health, LLC., Lenexa, KS) contains gleptoferron, which is an Fe macromolecule complex that is used as an injectable Fe source for suckling piglets
Summary
A total of 324 newborn pigs (DNA 241 × 600, initially 3.56 ± 0.10 lb body weight (BW)) were used in a 80-d study evaluating the effects of Fe injection timing after birth on suckling and subsequent nursery pig performance and blood criteria. Piglets were weighed on d 2, 12, and weaning (d 21) to calculate average daily gain (ADG) during farrowing. Pigs and feeders were weighed on d 28, 35, 42, 48, 55, 62, and 80 after birth to determine ADG, average daily feed intake (ADFI), and feed efficiency (F/G). Pigs were bled on d 21 (weaning) and 35 after birth to determine blood Fe status. In farrowing, increasing the age that piglets received a 200 mg Fe injection until 4 or 6 d after birth provided marginal evidence for an improvement (quadratic; P = 0.065) in ADG. For the nursery period, increasing the age of piglets receiving a 200 mg Fe injection from 2 to 4 or 6 d after birth improved (quadratic; P = 0.013) d 80 ending BW with a decrease in BW when Fe was provided after d 6
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