Lysine Requirement for Piglets in the Phase From 10 to 20kg in the Condiction of NE Brazil
Authors
Luiz de Carvalho
Departamento de Zootecnia do DZ/CCA/UFC.
Francisco Bastos
Departamento de Zootecnia do DZ/CCA/UFC.
Gastão Espindola
Departamento de Zootecnia do DZ/CCA/UFC.
Rafael Nepomuceno
Departamento de Zootecnia do DZ/CCA/UFC.
Tércia de Aquino
Departamento de Zootecnia do DZ/CCA/UFC.
Everardo Correia
Departamento de Zootecnia do DZ/CCA/UFC.
Keywords:
performance, piglets, nutrition
Abstract
One experiment with piglets between 10 to 20 kg live weight was conducted to determine the lysine requirements. Were utilized a total 60 crossbred pigs, 30 barrows and 30 gilts in a randomized block design with four replications and three piglets(two barrows and one gilts or two gilts and one barrow) per experimental unit. The piglets were fed diets containing corn-soybean meal and sesame meal with five lysine levels(0.70, 0.80, 0.90, 1.00 e 1.10%). Average daily gain (ADG) increased linearly (P<0.05) as levels of lysine increased. There was quadratic effect (P<0.05) of lysine levels on feed-gain. No effect of lysine levels on daily intake and on urea levels of blood serum (P>0.05) was observed. Based on ADG using the linear model and on feed-gain using the descontinous statistical model (LRP), the levels of 1.10 and 0.98% lysine were obtained respectively.
