Efficiency of Sodium Stearoyl-2-lactilate as an Exogenous Emulsifier Supplementation on Growth Performance, Nutrient Digestibility and Blood Component in Weaning Pigs

Weaning pig;Emulsifier;Sodium stearoyl-2-lactilate;Growth performance;Nutrient digestibility;630

농업생명과학대학 농생명공학부 ;

University:서울대학교 대학원

关键词: Weaning pig;    Emulsifier;    Sodium stearoyl-2-lactilate;    Growth performance;    Nutrient digestibility;    630;   

Others  :  http://s-space.snu.ac.kr/bitstream/10371/125791/1/000000004064.pdf

美国|英语

来源: Seoul National University Open Repository

【 摘 要 】

The ingredients market for animal feed industry has steadily increased in last decades. And environment concern about animal manure has led to an approach to find out the methods to increase digestibility of feedstuff. Especially, fat has been regarded as the most expensive ingredient but excellent energy source in swine diet. However, dietary fat enrichment is difficult in the early weaned pig because of digestive limitations. It is known that digestive enzyme;;s secretion in GI tract in weaning pig is not enough to digest grain source ingredients. An experiment was conducted to evaluate the efficiency of sodium stearoyl-2-lactilate as an emulsifier on growth performance and nutrient digestibility and blood component in weaning pigs. A total of 128 crossbred ([Yorkshire × Landrace] × Duroc) pigs,averaging 7.07 ± 1.52 kg initial body weight were randomly assigned based on sex andbody weight in a randomized complete block(RCB) design in 8 replicates with 4 pigs per pen. The 2 x 2 factorial design was used in this experiment and the first factor was supplementation levels of fat (no fat added or 2% fat added diet), and the second factor was two levels of emulsifier (diets containing 0 or 0.1% of SSL). Experiment was conducted with corn-soy bean meal based diet and two phase feeding programs were used. The phase Ι diet was provided for the first 2 weeks and the phase Ⅱ diet was given for last 3 weeks. During the whole experimented period(0~5week), no significant improvement of body weight and G/F ratio was observed by dietary fat or emulsifier treatment. However, there were tendency of fat effect on ADFI (P=0.09) and emulsifier effect on G:F ratio (P=0.08). It is noted that added fat in weaning pigs diet affected on lowered ADFI butemulsifier supplementation in the diet increased feed efficiency. In nutrient digestibility trial, crude fat digestibility tended to improve approximately 5% more than that of non-emulsified treatment(P=0.1). Exogenous emulsifier(SSL) may improving the digestibility of fat in diet. As a result of digestibility of fat,HDL:LDL ratio was changed in blood analysis(P<0.05). Consequently, this experiment demonstrated that exogenous emulsifier(SSL) is able to increase fat digestibility in weaning pigs particularly 2 weeks postweaning.