USE OF FERMENTED GREEN LIQUID FEED IN ORGANIC-ORIENTED PRODUCTION OF F1 (YORKSHIRE× MONG CAI)

Abstract

The study was conducted to evaluate the effect of fermented liquid feeds (FLF) containing agricultural by-products (ABP) on growth performance and meat quality of pigs raised at private farm of Thien Thuan Tuong Company, Cam Pha district, Quang Ninh province, Vietnam. A total of 90 crossbred (Yorkshire x Mong Cai) pigs after weaning were divided into 3 diet groups, each diet group contaied 30 pigs with 3 replicate pens. Pigs in group 1 (Lo 1) were fed complete feed (CF), pigs in group 2 (Lo 2) were fed a diet FLF containing 20% ABP in the diet, pigs in group 3 (Lo 3) were fed a diet FLF containing 25% ABP in the diet. The experimental period lasted 125 days. Studied indicators included initial/final weight and average daily gain (ADG), feed intake, feed conversion ratio (FCR), and feed cost, as well as carcass characteristics and meat quality. Study sesults showed that final weight and ADG of crossbred YxMC pigs fed CF were higher in both growing and fattening periods than pigs fed FLF containing ABP (P < 0.05). FCR of pigs fed FLF containing ABP was significantly higher than that of pigs fed CF (P < 0.05). Feed cost of pigs fed FLF containing ABP was lower than that of pigs fed CF. Using FLF containing ABP in pig diet did not affect carcass characteristics and meat quality, except for hot carcass weight and carcass weight. Using 20% ​​ABP in FLF diet resulted in higher livestock efficiency than using 25% ABP in growing-finishing pig FLF diet.