Effect Of The Solid Cane Molasses On Growth Performance And Partial Serum Biochemical Indexes Of Weaned Piglets

Guangxi is China’s major production base of sugar, and then the sucrose output ranked first in the country. Its by-products such as molasses are extremely abundant. At present in aquaculture, the research and application of cane molasses is mainly concentrated on ruminants, however, their application is very seldom in pig industry. To sum up the main reason has the following two aspects:at first, pigs as monogastric animals lack the ability of ample absorption and utilization for molasses as ruminants which have rumen microorganisms. Secondly, the shape of cane molasses is mostly liquid in the existing market, and thus inconvenient for transportation and application. In order to improve the production performance and immunity, and explore the feasibility of solid cane molasses used in weaned piglets during the transition period, this study explored the effect of different doses of solid cane molasses in the basal diet on the growth performance, partial blood biochemical parameters and immunity of weaned piglets, in order to open up a new way to the use of cane molasses.Forty-eight26-day-old Duroc×Landrace×Yorkshire weaned piglets with average weight of (7.15±0.24)kg were assigned at random to3groups with4replicates of4piglets using a single factor experimental design, and then were fed diets containing one of three additives of1%cane molasses(test A group),0.5%cane molasses(test A group) and0%cane molasses(control group). The experiment included adjustment period of5days and trial period of28days.The feed intake and diarrhea status were recorded every day, and normal stool samples were collected irregularly in each group.In addition, the weight of the piglets was recorded in the trial period of7th,14th,21th and28th days. The serum was collected from the anterior vena cava after fasting12h of each group in the lth,10th,19th, and28th for testing blood biochemical indexes, and the classical swine fever virus and porcine reproductive and respiratory syndrome virus antibody positive rate. The experimental results showed that:(1)In terms of production performance, the average daily feed intake of piglets fed with1%cane molasses was significantly increased in the2th and4th weeks(P<0.05); the average weight gain per week of piglets fed with1%cane molasses was also significantly increased in the4th week(P<0.05); the feed/gain(F/G) of piglets fed with1%and0.5%cane molasses was decreased, but had no significance with control group(P> 0.05). Meanwhile, the experimental groups and the control group showed no differences in the diarrhea rate, cough rate, and death elimination rate(P>0.05).(2)In terms of blood biochemical indexes, the liver and kidney function of the weaned piglets fed with cane molasses was not obviously affected(P>0.05); in the next place, the concentration of blood glucose of weaned piglets fed with1%cane molasses was significantly increased in appropriate range(P<0.05).(3)In terms of immune physiology function, the development rate of digestive system was accelerated for the weaned piglets fed with1%and0.5%cane molasses; the synthesis and utilization of the serum proteins were promoted, and then the growth of piglets was also promoted(P>0.05). Additional, the fluctuation of classical swine fever maternal antibodies positive and the produce of relevant vaccine antibody of the weaned piglets fed with cane molasses had no obviously affected, but the fluctuation time of porcine reproductive and respiratory syndrome maternal antibodies was extended(P<0.05). And then the resistance of weaned piglets was improved during the transition period.(4)In terms of the normal intestinal flora in feces, the number of intestinal lactobacillus flora of the weaned piglets fed with1%cane molasses were significantly improved, and it exceeded the number of E. coli bacteria (P<0.05), thereby the dominant intestinal flora was optimized for weaned piglets.In short, not only was the growth performance improved, but also the dominant flora in the intestine and immunity function was optimized in certain extent. Additionally, the liver and kidney function of the weaned piglets fed with solid cane molasses was not negatively affected. Therefore, adding solid cane molasses to weaned piglets diet is worth considering.