Effects of bifidobacteria on growth performance of suckling piglets

Abstract: In order to explore the effect of Bifidobacterium Bifidum on the growth performance of weaned piglets, 28 self-bred and self-raised newborn piglets were selected in this experiment and randomly divided into 2 groups of 14 pigs in each group. The control group of piglets did not receive any treatment. The piglets in the experimental group were fed with 0.01 g/head of bifidobacteria additionally, and the growth performance of the piglets in the two groups was observed. The results showed that the final weight of the piglets in the experimental group was significantly higher than that of the piglets in the control group ( P > 0.05), and the average daily gain of the piglets in the experimental group was significantly higher than that of the piglets in the control group ( P < 0.05). The results showed that Bifidobacterium had a positive effect on the growth performance of suckling piglets. Key words: suckling piglets;bifidobacteria; growth performance With the implementation of the policy of banning the addition of growth-promoting antibiotics in feed and the urgent demand of consumers for green and healthy food, researchers have been looking for green, safe and efficient feed additives. In recent years, microecological preparations, enzyme preparations, Chinese herbal medicines, etc., as green, efficient and safe feed additives, have become a research hotspot . The purpose of this study was to investigate the effect of supplementation with bifidobacteria on the growth performance of suckling piglets, and the results of the study are reported below. 1 Materials and methods 1.1 Test material Selected sows of a large-scale pig farm with the same breed, parity, and production period. On the second day after the piglets were born, 28 piglets with similar physiological conditions were selected for research. Piglets were randomly divided into 2 groups of 14 pigs each. The sows were routinely managed according to the farm conditions, and the piglets were lactating normally in the original litter. The piglets in the experimental group were artificially fed with Bifidobacterium at a dose of 0.01 g/head (the amount of viable bacteria was 2×10 11 CFU/g). 1.2 Test method The test piglets were all kept in the same farrowing house, and were fed according to the feeding management standards of the farrowing house. The suckling piglets drank water and feed freely, and were supplemented with starter at 7 days of age until weaning. The same starter was added to the bed, and on the 2nd, 7th, and 14th days of life, the piglets were administrated with the treated bifidobacteria with a disposable 10 mL syringe. 1.3 Observation indicators Piglets were weighed in litter units at fixed times before morning feeding at 2 and 21 days of age, respectively, and the weight gain of the piglets was recorded and calculated as well as the average daily gain throughout the experimental period. 1.4 Data processing SPSS 20.0 was used for statistical analysis, and the test data results were expressed as "mean ± standard deviation", and the t test was used for comparison between groups, and P < 0.05 indicated a significant difference. 2 Results and Analysis The results showed that there was no significant difference in the birth weight of piglets between the two groups ( P > 0.05), the final weight of piglets in the experimental group was higher than that in the control group, but the difference was not significant ( P > 0.05), and the average daily gain of piglets in the experimental group was significantly higher than that in the control group. For piglets, the difference between groups was statistically significant ( P < 0.05) 3 Discussion Micro-ecological preparations, also known as probiotics and live bacteria preparations, are biological preparations made from beneficial microorganisms in animals that are fermented, dried and processed on a specific medium. The beneficial bacteria in probiotics can adhere, colonize and grow in specific parts of the gastrointestinal tract, compete with intestinal pathogens for intestinal mucosal receptors and nutrients, inhibit the proliferation of intestinal pathogens, and maintain intestinal health. A number of animal experiments have confirmed that the prebiotics produced by probiotics can stimulate the appetite of animals, increase feed intake, promote the production of digestive enzymes in the body, regulate the intestinal microecological balance, improve the utilization rate of nutrients, and enhance the immunity of the body, thereby promoting animal growth . The results of this study showed that after adding bifidobacteria to the test group piglets, the average daily gain of the piglets was significantly higher than that of the conventionally raised control group piglets, and the difference between the groups was statistically significant ( P < 0.05). This shows that bifidobacteria, like probiotics such as lactic acid bacteria, can inhibit the growth of harmful bacteria in piglets and resist the infection of pathogenic bacteria. In addition, bifidobacteria can also synthesize some vitamins needed by the body, promote the absorption of minerals, strengthen intestinal peristalsis to a certain extent, promote defecation, purify the intestinal environment, stimulate the immune system, and then improve disease resistance. Bifidobacterium can also compete for nutrients and living space with Escherichia coli and Salmonella, which are highly susceptible to suckling piglets, and inhibit the growth of pathogenic bacteria through metabolites such as bacteriocins and antibiotics. Therefore, for suckling piglets, appropriate addition of bifidobacteria can improve the resistance of the body, promote the growth of the body, and improve the feed reward, which can be widely used.