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Volume 2010 (2010)
- Issue 47 Pages 1-
Volume 2010, Issue 47
Displaying 1-4 of 4 articles from this issue
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Tsutomu FUJIHARA, Toshiyosihi ICHINOHE2010 Volume 2010 Issue 47 Pages 1-7
Published: December 20, 2010
Released on J-STAGE: November 16, 2022
JOURNAL FREE ACCESSIn the present experiment, the eating and rumination behavior of lambs was investigated at 2-week, 2-month, 4-month and 5-month after weaned on 55 days after birth. Two female twin lambs (Japanese Corriedale, and Japanese Corriedale X Suffolk) were used as experimental animals. One of each twin was fed high- or low-protein-diet to maintenance level (1.8 or 1.2 times) as composed with timothy hay, rolled barley and soya-protein. During the experiment, there was no clear change in eating time, although the rate of eating (g/min.) tended to fast along with the growth of lambs, and it also tended to higher in HP group than in LP group. The daily rumination time was 30 and 20% higher at 5-month than at 2-week in HP and LP groups, respectively, and this would be due to increase of roughage intake along with the growth of lambs. There was little change in cyclic rate along with the growth of lambs. The rumination index (rumination time/100g DM eaten) was slightly improved along with the growth of lambs, and it also tended to higher in HP group than in LP group. The rumination chewing rate tended to slow along with growth of lambs. From these findings, it is clear in relation to increase of feed (roughage) intake that daily rumination time and also daily number of boli regurgitated in lambs tended to increase along with their growth.View full abstractDownload PDF (513K) -
Tomoya USAGAWA, Masayuki UEDA, Kanji OKANO2010 Volume 2010 Issue 47 Pages 8-12
Published: December 20, 2010
Released on J-STAGE: November 16, 2022
JOURNAL FREE ACCESSThe digestibility of sugarcane bagasse substrate was improved by culturing with the white rot fungus Ceriporiopsis subvermispora. In this study, the effects of feeding the treated sugarcane bagasse (TSB) on feeding and ruminating behaviour of sheep were examined. Three Suffolk ewe were each assigned to three diet groups in a 3×3 Latin square experiment and fed alfalfa hay cube as a basal diet. For each diet group, 30% of basal diet was replaced with original sugarcane bagasse (OSB), TSB and sudangrass hay (SG), respectively. They were fed each diet twice daily as 1.5% of body weight. The behavioral observations were conducted between morning and evening feeding on the 8th and 9th day of 9 days experiment period. Average residual diets were 121.3g for OSB, 53.3g for TSB and 1.7g for SG. The means of frequency of feeding behaviour during 8 hours daytime observation were 13.2 times for OSB, 11.0 times for TSB and 1.7 times for SG. The mean duration of feeding bouts were 5.9min. for OSB, 15.0min. for TSB and 19.8min. for SG. The means of frequency of ruminating behaviour during 8 hours observation were 55.3 times for OSB, 35.2 times for TSB and 75.8 times for SG, respectively. The feeding behaviour of TSB group was close to SG group comparing with OSB group. However, TSB group showed a difference in the frequency of ruminating behaviour from SG group, suggesting a difference in the physical structure between them.View full abstractDownload PDF (560K) -
Masahiro KONDO, Fengpeng WANG, Ataru KIMURA, Ryo OGASAWARA, Jiachen FA ...2010 Volume 2010 Issue 47 Pages 13-19
Published: December 20, 2010
Released on J-STAGE: November 16, 2022
JOURNAL FREE ACCESSWe examined the cause and mechanism of decrease in blood glucose after feeding of apple pomace silage (APS) in suffolk sheep. Eighteen sheep were used to determine postprandial changes in serum levels of glucose, insulin, glucagon and ethanol after feeding of 2 treatment diets in 2 experiments. The control and APS diets were consisted of equal amounts of alfalfa hay cube and commercial formulated concentrate (CP 15.5%, TDN 70%) or APS on TDN basis. The APS were prepared to contain similar amounts of CP and TDN for the concentrate by supplementing soybean meal, wheat bran, beet pulp or corn. In experiment 1, each of 3 wethers and 3 ram lambs were fed on one of the 2 treatments at a targeted feeding level to achieve daily gain of 100g. After 6 week feeding trial, blood samples were collected for 3 hours after morning feed and serum was harvested. The experiment 2 was conducted with 6 ewes to confirm the decrease in blood glucose in different sexes and to determine the effect of increased feeding rate of APS (×2 of maintenance requirement level). Ethanol content was 0.97 and 2.04% (w/w) for APS used in experiment 1 and 2, respectively. The pH values of both APS were less than 3.9. Significant decrease in serum glucose concentrations were consistently observed in the APS compared with control group irrespective of sex and feeding level of APS. Serum concentrations of insulin and glucagon were not affected by nutrition treatment in the present study. Serum ethanol levels were elevated in the APS treatment groups and its extent of the elevation was corresponded well with ethanol content of APS and degree of decrease in serum glucose concentration. These results suggest that postprandial decrease of blood glucose level after feeding of APS was caused by suppression of hepatic gluconeogenesis following ingestion of ethanol contained in APS.View full abstractDownload PDF (699K) -
Toshiyoshi ICHINOHE, Takako AWANO, Xiaofeng XU, Naiping SONG2010 Volume 2010 Issue 47 Pages 20-27
Published: December 20, 2010
Released on J-STAGE: November 16, 2022
JOURNAL FREE ACCESSThe feeding values of conventional diets fed to pregnant or lactating Tan sheep in Yanchi County, Ningxia, China, were evaluated by in vitro technique. Feed samples and information on the practical feeding regimen were obtained from 6 sheep farmers in Yanchi County, in March 2008. Feed samples obtained were corn grain (CG), wheat bran, corn stover (CS), alfalfa hay, sudangrass hay (SG), weeds (Ws), Chinese liquorice (CL) and Caragna korshinskii pellet. The 4 conventional diets (CS : CG=80 : 20 ; CS : Ws : CG=70 : 10 : 20 ; CS : CL : CG=70 : 10 : 20 and CS : SG : CG=60 : 20 : 20) were made up based on the practical feeding in Yanchi. By using chemical composition and in vitro gas production parameters, concentrations of metabolizable energy (ME) and crude protein (CP), and voluntary feed intake of the supposed conventional diets were estimated. The voluntary feed intakes of the conventional diets were estimated to be 1.6-1.7g dry matter/kg0.75. The ME provisions were estimated to be 14-16MJ/d ; and these energy values appeared to suffice the ME requirements for pregnancy and lactation of Tan sheep. In contrast, CP intakes were estimated to be lower than the CP requirements for both pregnancy and lactation periods, even though Tan sheep are fed the conventional diets ad libitum. From the result of this study, nutritional or physiological modulation might be suggested for pregnant and lactating Tan sheep to cope with CP deficient feed allowance in winter to spring in Yanchi County. This is an area needed further research on Tan sheep nutrition.View full abstractDownload PDF (665K)
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