Study On The Effects Of Different Types Of Feed Flavor On The Weaned Piglets

The feed flavor is an additive which can induce animals to forage, improve the palatability of feed, increase the animals’feed intake and improve feed conversion rate. Since there are various types of flavor, it is of great importance to select the appropriate flavor which the animal prefers for the increase of animals’feed intake. In the past, the common flavor added in feed is milk flavor, however, many types of flavor have been developed in recent years, and thus the weaned piglets’preference needs to be further studied. The research is intended to inspect the application effect of different types of flavor on weaned piglets’feed with two experiments for the exploring the flavor which is most efficient for the weaned piglets’feed intake.The objective of the first experiment was to characterize the impacts of using different types of feed flavor on the monophagia and partial eclipse index of weaned piglets. Ninety six healthy (28±2 d) white weaned piglets were used in the present study. Animals were divided into 8 treatment groups according to the principle of gender and the average weight randomly and 4 repeats in each treatment group (each repeat included 3 weaned piglets). We used double groove two-way choice test method to evaluate the effects of cheese flavor, truffle flavor, fruit milk flavor, fresh milk flavor, cream flavor, cheese milk flavor, colostrum flavor and milk flavor on the monophagia and partial eclipse index in weaned piglets. The dose of feed flavor content was both 800 g/t. The experimental period lasted 5 days. Results showed that the partial eclipse index of cheese flavor group, truffle flavor group, fruit milk flavor group, fresh milk flavor group, cream flavor group, cheese milk flavor group, colostrum flavor group and milk flavor group were 12.18,0.80,3.05,8.55,0.75,2.08,0.95 and 0.90, respectively; and the monophagia index were 87.00%,40.75%,57.00%,62.50%,33.75%, 62.00%,46.50% and 44.00%, respectively. The effects of cheese flavor and cheese milk flavor were biggest, followed by fresh milk flavor and fruit milk flavor.The objective of the second experiment was to evaluate the effects of feed flavor application types on weaned piglets. Three hundred and sixty white weaned piglets (28±2 d, 6.51±0.70 kg) were used in a single factor test design. Animals were randomly divided into 9 treatment groups according to the gender and the average weight, each treatment group included 4 repeats and each repeat concluded 10 weaned piglets. The adding dose of feed flavor was both 800 g/t. The experimental period was 28 d. Compared with the control group, the application of colostrum flavor group, fresh milk flavor group and cheese milk flavor group growth performance were better. Results also showed that the ADG was enhanced by 12.31%,11.83% and 6.86%; the ADFI was enhanced by 7.41%,11.49% and 2.50%, the F/G was lower by 5.29%,1.18% and 4.71%; the diarrhea rate was lower by 62.50%,62.50% and 37.50%, respectively. The effects of fruit milk flavor group, colostrum flavor group, cheese milk flavor were better than the control group. The GH was enhanced by 30.60%,13.93%, 12.94% and 12.69%; the Ghrelin was enhanced by 13.55%,11.51%,10.81% and 9.03%, respectively. The analysis results of the economic benefit for the 8 types of flavor indicate that the return rate of investment is as follows (from high to low):colostrum flavor, fresh milk flavor, cheese milk flavor, cream flavor, fruit milk flavor, milk flavor, cheese flavor and truffle flavor.