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by
Sabri Yurtseven |
Total Records (
3 ) for
Sabri Yurtseven |
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Sabri Yurtseven
and
Irfan Ozturk
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This study was performed to evaluate the effect of different
cereal source in choice feeding systems on performance and on emission
of carbon dioxide (CO2) and enteric methane (CH4)
in dairy Awassi ewes. Total 16 dairy ewes were divided into two groups:
the corn based free choice (CFC) group received feed ingredients separately
(corn, wheat bran, soybean meal (SBM), cottonseed meal (CSM) and alfalfa
hay) and the barley based free choice group (BFC) group received barley
instead of corn as carbon hydrate source. The results showed no significant
differences (p > 0.05) between treatments in live weight, live weight
gain, milk yield, milk composition and CO2 production. However,
the results of CH4 measurement indicated significant differences
between groups in the amounts of CH4 produced. The ewes in
the CFC group produced less CH4 than the ewes that received
the BFC system (CFC: 21.82; BFC: 38.34 g/day/sheep). The results indicate
that the CFC system modified ruminal fermentation and affected the Volatile
Fatty Acid (VFA) components and levels in ruminal fluid. In ewes on the
CFC system, the level of propionate was greatly increased (CFC: 19.77
vs. BFC: 14.53%) and the level of acetate decreased (CFC: 68.34 vs. BFC:
75.58%). Butyrate level was not changed relative to the total VFA components.
There were no significant differences in ruminal pH level between treatments.
The results indicate that the CFC system has a potential mitigating effect
on enteric emission of CH4 but not CO2. |
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Sabri Yurtseven
,
Mehmet Cetin
,
Irfan Ozturk
,
Abdullah Can
,
Mustafa Boga
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Tekin Sahin
and
Huseyin Turkoglu
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This study was performed to evaluate the effect of different feeding systems (choice feeding and conventional system) on performance and emission of carbon dioxide (CO2) and enteric methane (CH4) in dairy Awassi ewes. One chamber was equipped with gas analyzers to measure CH4 and CO2 for 23 h day-1. In total, 16 ewes were used. The ewes were divided into two groups: the Free Choice (FC) group received feed ingredients separately and the Total Mixed Ration (TMR) group received a standard mixed concentrate: forage diet in a ratio of 60:40. The results showed no significant differences between treatments in performance parameters. However, the results of CH4 and CO2 measurement indicated significant differences between groups in the amounts of CH4 and CO2 produced per kg dry matter intake. The ewes in the FC group produced less CH4 per animal than the ewes that received the TMR system. In ewes on the FC system, the level of propionate was greatly increased relative to the total VFA components. There were no significant differences in ruminal pH and acetate level between treatments. The results indicate that the FC system may be a potential mitigating effect on enteric emission of CH4 and CO2. |
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Murat Gorgulu
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Alicja Siuta
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Emine Ongel
,
Sabri Yurtseven
and
Hasan Rustu Kutlu
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The study was conducted to determine the effect of probiotic based on Lactobacillus sp. on performance and health status of Holstein male calves. 12 (3 days old) calves with average initial live weight 35 kg were assigned to the control and the group with probiotics applies. All calves were weaned at 60th day. Twice daily, during the time period till weaning they consumed 228 whole milk. Calves of probiotic group received 2 g probiotic daily with the morning milk. The results showed that there were no differences in daily gain, roughage, concentrate or total feed intake, feed to gain ratio and weaning weight. Calves fed with probiotic were healthier than the control calves. Three calves from control group and one calf from probiotic group were died from scour and/or bloat. In respect to diarrhea and bloat cases, probiotic group was superior to the control. It would be concluded that the probiotic administration before weaning could improve calves health and decrease mortality and veterinary cost. |
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