Effects of Microbial Feed Additives on Performance of Starter and Growing-finishing Pigs

Abstract

SummaryThree trials were conducted to evaluate the effect of lactic acid-producing microbial feed additives (Probiotics) on performance of starting and growing-finishing pigs. Two commercially available probiotics, Probios (L. acidopbilus) and Feed-Mate 68 (Streptococcus faeciurn type Cernelle 68), were used. In the first of two starter trials, 192 crossbred pigs (initial weight 7 kg) were used in a 2 • 4 factorial arrangement of treatments, with Probios and antibiotics (ASP-250, lincomycin, tylosin) as the main effects. Addition of antibiotics, regardless of source, improved (P<.05) average daily gain (ADG) and feed conversion (FC). ADG and FC were improved by 2.6 and 3.6%, respectively, with probiotics (P< .10). A suggestion of an additive effect was observed for lincomycin plus Probios. In the second trial, with 224 pigs, virginiamycin was evaluated in combination with Probios, Feed-Mate 68 and DL-lactic acid. The antibiotic effect was not significant; addition of probiotic products and DL-lactic acid improved FC (P<.05). Probios improved ADG 9.7% and FC 4.4%, while Feed-Mate 68 decreased performance. A growing-finishing trial was conducted with 144 crossbred pigs (average initial weight 34 kg) to determine the effect of probiotics, lincomycin or a combination on ADG and FC of growingfinishing swine. Probiotics did not affect performance, but addition of lincomycin increased ADG by 3.6% (P<.05) and FC by 2.5% (P<.IO).

A Trial to Prevent Salmonella Enteritidis Infection in Broiler Chickens Using Autogenous Bacterin Compared with Probiotic Preparation

“…Our findings concerning the immunopotantiation caused by probiotic administration concur with Pollmann et al, (1980); Zulkifli et al, (2000); Toms and Powvie (2001) ;Huang et al, (2004); Koenen et al, (2004). Also, Sevage et al, (1996) and Panda et al, (2000) demonstrated an increase in the serum immunoglobulins IgG and IgA after administration of competitive exclusion cultures.…”

Alternatives to in-feed antibiotics in pigs: Evaluation of probiotics, zinc or organic acids as protective agents for the intestinal mucosa. A comparison of in vitro and in vivo results

“…Some studies reported that treatment of piglets with B. lactis increases blood leukocyte phagocytic and T-lymphocyte proliferative responses [75]. Similar results have been observed with gnotobiotic piglets, where feeding with L. acidophilus increases the white blood cells [61] and the antibody level [41].…”

Probiotic of Lactobacillus sp. DS-12 in flounder (Paralichthys olivaceus).

“…Many investigators reported that lactic acid bacteria have an important role in beneficial biological functions in industrial animals (Fuller, 1989;Gilliland and Speck, 1977;Juven et al, 1991;Pedigon et al, 1995;Tortuero, 1973). However, in spite of the positive effects of probiotics application in health care and improving feed conversion for industrial animals (Pollmann et al, 1980;Sissons, 1989), special probiotics for inland or sea fish have not yet been developed. At present, most fish farmers in Korea have used probiotics isolated from mammals to achieve growth promotion.…”

“…DS-12 in the fish gut. Pollmann et al (1980) reported that the administration of Lactobacillus acidophilus induces a growth promotion effect in sibling and nearly matured pigs. Other researchers (Chateau et al, 1993;Fuller, 1989;Gilliland et al, 1980;Gorbach, 1990;Pedigon et al, 1995;Tortuero, 1973) also reported that the administration of lactobacilli improves intestinal microflora and promotes animal and human health.…”