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2019, Number 1

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AbanicoVet 2019; 9 (1)

Organic zinc supplementation and pigs productive performance in warm environment

Romo-Valdez J, Romo-Valdez A, Montero-Pardo A, Urías- Castro C, Güémez-Gaxiola H, Romo-Rubio J

Language: Spanish
References: 26
Page: 1-9
PDF size: 761.80 Kb.


ABSTRACT

In order to evaluate the influence of organic zinc supplementation on the performance of developing pigs in a warm environment (t 30.4 °C, RH of 73% and THI 82), 96 pigs of 84 d of age were used (33.8 ± 0.96 kg of live weight) in a randomized complete block design. The treatments were: 1) Control (n = 24), corn/soybean-based developing pig diet; 2) Control plus 120 ppm Zn/kg of DM; 3) Control plus 240 ppm Zn/kg of DM, and 4) Control plus 360 ppm organic Zn/kg of DM. Zinc was provided as zinc methionine (ZnMet). The pigs in groups of eight (4 males and 4 females) were placed in 12 pens (3 per treatment). The pen was the experimental unit. The pigs were weighed on days 1 and 42; fed intake, air temperature, and RH were recorded daily. The results were analyzed by ANOVA (p ‹0.05) and the influence of the Zn level on the productive response was explored by orthogonal polynomials. Quadratic responses were observed at the Zn supplementation level in the final weight (P = 0.05), daily weight gain (P = 0.03) and daily feed intake (P = 0.05). The feed conversion tended (P = 0.08) to improve linearly as the Zn level increased, with mean values of 2.97, 2.83, 2.90 and 2.70 kg of feed/kg of gain, for Control, 120 ZnM, 240 ZnM, and 360 ZnM, respectively. The results indicate that the diets intake supplemented with Zn improves the feed conversion of pigs during the development stage, under warm environment condition.


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