Effects of Supplemented Shrimp Shell Meal on Growth, Nutrients Digestibility and Blood Cholesterol Levels in Finishing Pigs
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The studied on dietary shrimp shell meal (SSM) in pigs conducted of 2 experiments. The first experiment, eighteen crossbred (Duroc x Larg White x Landrace) barrows were used to investigate the effects on nutrients digestibility. The experiment was divided into 2 periods at 30 and 60 kg body weight. Assigning to Randomized complete block design (RCBD) with 3 blocks. The pigs were fed diets containing SSM at level of 0, 3, 4, 5, 6 and 7%. The feeding practice was ad libitum for pigs at 30 and 60 kg body weight with 16 and 14% protein; metabolism energy 3,150 and 3,100 kcal/kg, respectively.
The second experiment, thirty-six same crossbred pigs as first experiment consisted of 18 barrows and 18 gilts were used to investigate growth performance and cholesterol levels in blood. Assigning to Randomized complete block design (RCBD) was used in this experiment. Pig blood sampling was done at 30, 60, and 90 kg body weight. Drinking water was provided at all time.
The results in first experiment, pigs at 30 kg body weight showed no significant difference (P>0.05) were observed in digestibility of dry matter, protein, fat, Ca, P, NFE, energy, ash and AIA among the treatments. The digestibility of crude fiber in dietary SSM 3, 6 and 7% were higher than the control group (P<0.05). At 60 kg body weight showed that no significant (P>0.05) in digestibility of dry matter, protein, crude fiber, ash, P, NFE and energy among the treatments, but the digestibility of fat were highest (P<0.05) in 5% SSM diet and the digestibility of Ca and AIA were higher (P<0.01) in dietary SSM compare with the control.
In the second experiment, the results showed that no significant difference (P>0.05) in feeding period, average daily gain and FCR among the treatments. Pigs fed 4% SSM diet were significance highest (P<0.01) in feed intake. The results of cholesterol levels in pigs at 30 kg body weight showed no significant difference (P>0.05), at 60 and 90 kg body weight 7% SSM diet were significant lowest (P<0.05) compare with the control. The triglyceride level of 6 and 7% SSM diet were lower (P<0.05) at 30 and 60 kg body weight of pigs, respectively. Although the triglyceride level at 90 kg body weight of pigs were no significant difference (P>0.05) among group of pigs. We concluded that 6 and 7% SSM supplemented in growing and finishing pig diets can be decreased cholesterol and triglyceride in blood.
Department of Animal Technology, Maejo University Chiangmai, Thailand.
March 02 2008 10:12 am | Research