Effect of different sources of zinc in sows and their progeny

Author(s)

Claudia Cassimira da Silva

• Document type: Doctoral Thesis
• Press: Pirassununga.
• Institution: Universidade de São Paulo (USP). Faculdade de Zootecnica e Engenharia de Alimentos (FZE/BT)
• Defense date: 2014-03-21

Examining board members

Lúcio Francelino Araújo; Rosemeire da Silva Filardi; Jacinta Diva Ferrugem Gomes; Antonio Carlos de Laurentiz; Anibal de Sant'Anna Moretti

• Advisor: Lúcio Francelino Araújo

Abstract

Given the importance of zinc in the productive and reproductive performance of sows and piglets performance, three experiments to evaluate different sources of zinc in swine were conducted. The first experiment evaluated different sources of zinc, organic (zinc methionine (Zn-Met) and zinc glycine (Zn-Gly)) and inorganic (zinc oxide (ZnO)) in the diet of pregnant gilts and sows lactating and the effects of using these sources in their progeny. Were used 18 female of a commercial strain distributed in experimental design of randomized blocks with three treatments and six repetitions with one animal each. The characteristics evaluated in the sows were: weight, backfat thickness, prolificacy, number of piglets born alive and zinc levels in serum, colostrum and milk; In the piglets after birth until weaning were analyzed: serum levels of zinc, weight gain, bone density and histomorphology enteric. The second experiment 180 piglets were used, weaned at 21 days of age in a randomized block design in a factorial 3 x 3 (3 maternal diets - 100 ppm from ZnO , Zn-Met , Zn-Gly x 3 diets progeny - 100 ppm ZnO , Zn-Met - , Zn-Gly) totaling 9 treatments and 4 replicates of 5 animals each, which evaluated the performance, diarrhea incidence, serum zinc levels, bone density and histomorphology enteric. The third experiment 810 weaned pigs weaned at 21 days of age in a randomized block design with 6 treatments of 3 replicates of 45 animals each: Phases I and II - 1. diet + 2300 ppm of ZnO; 2. diet + 2200 ppm of ZnO + 100 ppm of Zn-Met; 3. diet + 2200 ppm ZnO + 100 ppm of Zn-Gly; 4. diet + 2400 ppm of ZnO; 5. diet + 2200 ppm of ZnO + 200 ppm of Zn- Met; 6. diet + 2200 ppm of ZnO + 200 ppm of Zn-Gly; Phase III - 1. diet + 1600 ppm of ZnO; 2. diet + 1500 ppm of ZnO + 100 ppm of Zn-Met; 3. diet + 1500 ppm of ZnO + 100 ppm of Zn-Gly; 4. diet + 1700 ppm of ZnO; 5. diet + 1500 ppm of ZnO + 200 ppm of Zn- Met; 6. diet + 2200 ppm of ZnO + 200 ppm of Zn-Gly in evaluating the performance of animals. All datas were analyzed using SAS (1998 ) program. The treatment means were compared by Tukey test at 5 % probability , according to Steel and Torrie (1980). (AU)

• FAPESP's process: 09/18542-9 - Effect of different sources of zinc in diets for sows and piglets
• Grantee: Claudia Cassimira da Silva
• Support Opportunities: Scholarships in Brazil - Doctorate