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The weaned piglet is a model for zinc deficiency in children. This study aimed comparing growth and nutrient digestibility of piglets with or without Availa-Zn-170 on diets. Two hundred and eighty-eight 7.5 ± 0.4 kg piglets, weaned at the age of 25d, were used to evaluate the effects of Availa-Zn-170 (17% amino acid zinc) on growth performance, blood profile, and apparent total tract digestibility of crude protein and digestible energy. Six dietary treatments were used: (1) Control diet without Zn supplementation (CON), (2) CON+20 mg/kg Availa-Zn-170 (Availa-Zn-20), (3) CON+40 mg/kg Availa-Zn170, (Availa- Zn-40), (4) CON+60 mg/kg Availa-Zn-170 (Availa-Zn-60), (5) CON+80 mg/kg Availa-Zn-170 (Availa- Zn-80), (6) CON+80 mg/kg feed grade zinc sulphate (Zinc sulphate-80). Our results showed during the overall period, piglets fed Availa-Zn-40 or Availa-Zn-80 had greater (P<0.05) average daily gain and G: F compared with other diets. Dietary treatments did not affect the apparent total tract digestibility of crude protein and gross energy determined on d 40. Compared with the control, the concentration of serum Zn on d 14 and 40 increased when Availa-Zn-170 was added. The results indicate that Availa- Zn-170 could be an effective organic zinc use as alternative to inorganic zinc to increase the growth performance and nutrient digestibility of weaned piglets.
Blood profile, Diarrhea rate, Growth performance, Nutrient digestibility, Weaned piglets, Zinc, #