Min, J.K.
(Department of Animal Science and Technology, College of Agriculture and Life Sciences Seoul National University)
,
Kim, W.Y.
(Department of Animal Science and Technology, College of Agriculture and Life Sciences Seoul National University)
,
Chae, B.J.
(Department of Animal Science and Technology, College of Agriculture and Life Sciences Seoul National University)
,
Chung, I.B.
(National Livestock Research Institute)
,
Shin, I.S.
(American Soybean Association)
,
Choi, Y.J.
(Department of Animal Science and Technology, College of Agriculture and Life Sciences Seoul National University)
,
Han, I.K.
(Department of Animal Science and Technology, College of Agriculture and Life Sciences Seoul National University)
An experiment was carried out to evaluate the effects of feeding graded levels of chromium in the form of chromium picolinate on growth performance, blood components, carcass grade, in vitro lipogenesis and lipolysis, and in vitro protein degradation and synthesis in growing-finishing pigs. There we...
An experiment was carried out to evaluate the effects of feeding graded levels of chromium in the form of chromium picolinate on growth performance, blood components, carcass grade, in vitro lipogenesis and lipolysis, and in vitro protein degradation and synthesis in growing-finishing pigs. There were no significant differences for daily weight gain, feed intake and feed conversion among treatments during growing phase, while in the finishing phase, feed intake was lower in groups fed diets with 200 ppb chromium than in other treatment (p < 0.1). Feed conversion was improved in the groups fed diets with chromium compared with control. Carcass weight was similar among treatments while carcass length was longer in groups fed diets with 200 ppb chromium (p < 0.05). Thinner carcass fat was found with groups fed diets with chromium compared to control. Three A grade of carcasses were from groups fed chromium compared to control. No significant differences were observed with blood glucose, insulin, total cholesterol, triglycerides and non-esterified fatty acid at 60kg body weight. While, at 100 kg body weight, blood triglyceride was lower in groups with 200 and 400 ppb chromium but higher in groups with 100 ppb chromium (p < 0.05). In vitro lipolysis and protein synthesis in adipose tissues were increased as dietary chromium was increased from 0 to 200 ppb (p < 0.1). As a result, 200 ppb chromium in a growing-finishing diet could improve feed efficiency and carcass traits; an increase to 400 ppb has no further effect.
An experiment was carried out to evaluate the effects of feeding graded levels of chromium in the form of chromium picolinate on growth performance, blood components, carcass grade, in vitro lipogenesis and lipolysis, and in vitro protein degradation and synthesis in growing-finishing pigs. There were no significant differences for daily weight gain, feed intake and feed conversion among treatments during growing phase, while in the finishing phase, feed intake was lower in groups fed diets with 200 ppb chromium than in other treatment (p < 0.1). Feed conversion was improved in the groups fed diets with chromium compared with control. Carcass weight was similar among treatments while carcass length was longer in groups fed diets with 200 ppb chromium (p < 0.05). Thinner carcass fat was found with groups fed diets with chromium compared to control. Three A grade of carcasses were from groups fed chromium compared to control. No significant differences were observed with blood glucose, insulin, total cholesterol, triglycerides and non-esterified fatty acid at 60kg body weight. While, at 100 kg body weight, blood triglyceride was lower in groups with 200 and 400 ppb chromium but higher in groups with 100 ppb chromium (p < 0.05). In vitro lipolysis and protein synthesis in adipose tissues were increased as dietary chromium was increased from 0 to 200 ppb (p < 0.1). As a result, 200 ppb chromium in a growing-finishing diet could improve feed efficiency and carcass traits; an increase to 400 ppb has no further effect.
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제안 방법
Four randomly selected pigs (2 male ‘and 2 female) from each treatment were slaughtered after 24-hour fasting and kept at freezing temperature for subsequent carcass evaluation. Carcass weight, carcass percentage, dressing percentage, backfat thickness and loineye area were measured for comparison.
대상 데이터
A total of 64 three cross-bred pigs with average body weight of 20 kg (32 male and 32 female) were used as experimental subjects. Experimental diets were formulated to contain graded levels of chromium in the form of chromium picolinate and pigs were randomly alotted into 4 pens consisting of 4 heads each.
이론/모형
Treatment means were compared accordings to Duncan's method (1955) using SAS (1985) General Linear Model procedure.
후속연구
Considering that chromium enables pigs to utilize energy or protein more efficiently, addition of chromium to the swine diets should be a promising feeding program to improve carcass quality (Schroeder, 1971; Giri, 1990; Mertz, 1969; Votava, 1973). Based upon these results, further studies should be directed toward immune response and amino acid metabolism.
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