Influence of fermented fish meal supplementation on growth performance, blood metabolites, and fecal microflora of weaning pigs

Abstract

-This study was conducted to estimate the effect of dietary supplementation with fermented fish meal on growth performance, blood metabolites, and fecal microflora in weaning pigs. A total of 180 weaned pigs ((Landrace × Yorkshire) × Duroc; with average body weight of 6.0 kg) were randomly distributed among three dietary treatments (0, 0.2, and 0.5% fermented fish meal) in three replicate pens (20 heads per pen) in a completely randomized trial over three weeks. Addition of fermented fish meal to weanling pig diets had a linear effect on average feed intake and a quadratic trend on final body weight, average daily gain, and gain:feed ratio throughout the whole period (but not initial body weight). Hematocrit, monocyte, immunoglobulin G, and blood urea nitrogen levels responded linearly and quadratically with increasing levels of dietary fermented fish meal. Moreover, we found a linear correlation between the diets and lymphocyte and insulin levels among the different dietary treatments. In contrast, red blood cells, white blood cells, hemoglobin, insulin-like growth factor 1, and glucose levels were not affected by diets with different levels of fermented fish. During the experimental period, diets with 0.2% and 0.5% fermented fish meal showed a reduction in Salmonella enterica and Escherichia coli populations (but not E. coli populations at week 3) that were linear, quadratic, or both, compared with controls. In particular, there was a significant reduction in S. enterica population when pigs were fed 0.5% fermented fish meal over the period of 3 weeks). Dietary supplementation with 0.2% and 0.5% fermented fish meal can be used as a protein source to improve growth performance and the parameters chosen for the blood profile, which reduces harmful microorganisms in the feces of weanling pigs.

Growth Performance, Nutrient Digestibility, Blood Profiles, and Gut Integrity of Growing Pigs Fed Pickled Fish Residue with Decreased Salt Content

“…A further study is needed to clarify the adverse effect of long-term storage of PFR before use in livestock feed. A previous study revealed that the desirable odour of PFR increased feed palatability by improving ADFI [23]; however, such influence was not observed in the present study. The discrepancy might be caused by differences in freshwater fish source, batches, and storage duration, which influences the quality and nutritional composition of PFR.…”

Effects of mealworm (Tenebrio molitor) larvae hydrolysate on nutrient ileal digestibility in growing pigs compared to those of defatted mealworm larvae meal, fermented poultry by-product, and hydrolyzed fish soluble

“…In addition, its small peptides can be readily absorbed in the small intestine. There have been several studies on nutritional values of fermented or hydrolyzed animal by-products to improve growth performance and nutrient digestibility [9][10][11]. Fermented fish meal was an effective protein ingredient to improve growth performance [9], and had higher apparent ileal digestibility of total AA than fish meal [11].…”

“…There have been several studies on nutritional values of fermented or hydrolyzed animal by-products to improve growth performance and nutrient digestibility [9][10][11]. Fermented fish meal was an effective protein ingredient to improve growth performance [9], and had higher apparent ileal digestibility of total AA than fish meal [11]. The hydrolyzed porcine intestinal mucosa product had similar to or greater degestible energy and metabolizable energy (ME) values than fish meal, and the standardized total track digestibility of phosphorus (P) was greater than fish meal [10].…”

Comparative study of yeast selenium vs. sodium selenite on growth performance, nutrient digestibility, anti-inflammatory and anti-oxidative activity in weaned piglets challenged by Salmonella typhimurium

“…Then, we found YS supplementation resulted in a decrease of ST compared with piglets fed SS after 1 d of ST challenge, which was consistent with previous reports. 26 Expectedly, ST up-regulated this bacterium in excrement microflora during the late stage of challenge, indicating that the treated pigs may be successful in infection. Nowadays, overpopulation of E. coli might cause diarrhea and the inhibition of animal growth performance has been accepted.…”

“…However, several experiments have shown that YS supplementation reduced the fecal microflora in finishing pigs. 25,26 It was reported that piglets which were fed the yeast diet had limited effects on microbial counts in fresh feces. 27 The different results might be explained by the experimental animals, proper doses of YS, and types of YS.…”