PSX-40 Late-Breaking Abstract: Effect of Dietary Replacement of Fishmeal by Insect Meal on Growth Performance and Non-specific Immunity of Growing Pigs

Abstract

Recent data show that dried larvae of darkling beetles (Zophobas morio L., DZML) and dried larvae of wax moths (Galleria mellonella L., DGML) contains a significant amount of protein, fat, chitin, melanin, antimicrobial peptides, trace elements etc. Larva’s fat is rich in lauric and other medium-chain fatty acids. The aim of our research was to study the influence of dietary replacement of fishmeal (FM) by insect meal on growth performance and nonspecific immunity of growing pigs. Experiments were performed using crossbred [(BWxL)xD] pigs (BW1=14.39±0.19 kg, N=27, n = 9) during the growing period. Animals were allocated to 3 groups: 1 – control (standard feed (SF), including FM), 2 – experimental (SF+2.5%DZML), 3 – experimental (SF+3.0%DGML). The materials obtained in the experiment was biometrically processed using the ANOVA method (at P >0.05 or P < 0.05). The use of DZML&DGML in feed didn’t reduce ADG of experimental animals during the growing period (413.23&413.76 vs. 413.76 g) compared to the control group. Dried larvae supplementation didn’t reduce feed intake and nutrient digestibility. The fat digestibility increased in the 2&3-experimental group (45.0&44.36 vs 29.75%, P < 0.05), due to the high level of lipids and the profile of fatty acids in the larvae. Biochemical blood test showed a higher ALB/GLB ratio (0.85&1.43 vs 0.59, P = 0.05), higher number of WBC (12.36&12.89 vs. 10.44, P = 0.19) in the blood of the experimental animals compared to the control group. Growing pigs of the experimental groups had a higher level of nonspecific immunity, which is expressed in an increase in bactericidal, lysozyme activity of blood serum and phagocytic activity of neutrophils. Consequently, it is possible to consider the prospects of using DGML&DGML as dietary supplements to diets of growing pigs. The work was supported by the GZ АААА-А18-118021590136-7 of the Ministry of Science and Higher Education of the Russian Federation.

Effect of Black Soldier Fly (Hermetia illucens L.) Fat on Health and Productivity Performance of Dairy Cows

“…For example, BSFLF feeding was associated with a slight decrease in somatic cell count in the milk of D10&D100 animals ( p = 0.37, Table 8 ). Previously, in young cattle, we showed a significant effect of feeding melanin protein-energy supplement of Hermetia illucens larvae on non-specific immunity and intestinal microbiocenosis composition in experimental animals [ 68 ]. There is evidence of increased immunity in animals when feeding them various components of insect larvae [ 40 ].…”

Special compound feeds and an immunostimulator to increase the live weight gain of suckling piglets

“…Besides that the super starter and prestarter should contain components of animal origin with high biological value, since the digestive system of piglets in the first days of life is configured to consume milk and dairy products. Therefore, manufacturers often introduces powdered milk or whey powder into the composition of the first mixed feed [11].…”

Silicon-based natural zeolites in feeding store pigs

“…This ensures their good digestibility and absorption [7][8][9]. At the same time, silicon-based zeolite contributes to the formation of denser fecal masses, reduces or completely eliminates the development of diarrhea [10][11][12]. All this contributes to the improvement of nutrients and biologically active IOP Conf.…”