ACADSTAFF UGM
| Title | : | Effects of bentonite inclusion in naturally aflatoxin contaminated diet on aflatoxin excretion and milk production of Indonesian Friesian Holstein |
| Author | : |
Ika Sumantri (1) Prof. Dr. Ir. Ali Agus, DAA., DEA., IPU., ASEAN Eng. (2) Prof. Dr. Ir. Tridjoko Wisnu Murti, DEA (3) Prof. Dr.rer.nat. Nuryono, M.S. (4) Josef Boehm (5) |
| Date | : | 2017 |
| Keyword | : | - - |
| Abstract | : | The efficacy of natural bentonite in reducing aflatoxin trans¬fer in cows routinely fed aflatoxin-contaminated diet was investigated in this study. A cross over research design was applied to eight Indonesian Friesian Holstein (IFH) cows. Cows have randomly received a diet contaminated naturally aflatoxin B1 (AFB1), containing 47ppb AFB1 (AFB1D), and a diet with 0.1% natural bentonite inclusion (BD). After a period of 15 days, diets were switched. Milk production was recorded daily and milk samples were collected at lasted 3 Thirty Sarda ewes and 26 Saanen goats were compared from 92 to 139 DIM using two dietary treatments (on DM basis): high starch (HS: 20.0% starch, 36.7% NDF, 15.5% CP) and low starch-high digestible fiber (LS: 7.8% starch, 48.8% NDF, 15.6% CP) diets. The diets contained 29% of dehydrated chopped alfalfa, 4% of chopped mature ryegrass hay, and 67% of experimental pellets fed ad libitum. The LS diet was obtained by substituting most of the cereal grains of the pel¬let of the HS diet with soyhulls. Milk production was measured once a week. BCS was esti¬mated every two weeks. Blood samples were collected before the morning meal at DIM 126 and 134 on 20 ewes and 20 goats (10 per diet) selected to be representative of their group for milk yield and BCS. In addition, at the end of the trial, a post-prandial blood sampling was performed at 30, 60, 120, 180 and 240 min after the morning meal. Data were ana¬lyzed with the PROC MIXED procedure of SAS for repeated measurements. In goats the LS diet resulted in lower fat corrected milk yield (FCM) (2.53 vs 2.65 kg/d ± 0.05; jp<.05), than the HS diet, with no effect on BCS whereas in ewes LS had a positive effect on FCM (1.47 vs 1.36kg/d ± 0.04; ^<.01) with a lower BCS recovery (final BCS: 3.33 vs 3.46 ±0.05; ^<.05) com¬pared with HS. The hormonal and metabolic status were not affected by the diets but differed between the two species both in the pre¬feeding samplings and the post-prandial samplings. Goats had lower plasma glucose (48.3 vs 56.0mg/dL ±1.7; p<.0001) and insulin (0.14 vs 0.38 pg/L ± 0.05; p<.0001) concentration and higher plasma GH (2.62 vs 1.37ng/mL ±0.58; p = 0.038) and leptin (24.72 vs 11.97ng/mL ±2.13; p<.0001) concentration than ewes. Similar results were obtained with the post-pran¬dial blood samplings. In conclusion, in mid lactation the partial replacement of starchy feeds with sources of highly digestible fiber increased milk persistency in ewes but not in goats, which instead were favored by the starch-rich diet. Differences in hormones and glucose between goats and sheep confirmed the better aptitude of Saanen goat to milk production than Sarda sheep. |
| Group of Knowledge | : | Nutrisi dan Makanan Ternak |
| Original Language | : | English |
| Level | : | Internasional |
| Status | : |
Published
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