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    The Effects of Sorghum Grain on Live Weight Gain, Feed Conversion Ratios and Digestibility of Nutrients in Beef Cattle
    (Medwell Online, 2008) Baran, M. S.; Demirel, R.; Yokus, B.; Kocabagli, N.
    In this research, the effect of sorghum in beef cattle mixture feeds as energy source instead of wheat on live weight gain, feed conversion ratio and digestibility of nutrients were investigated. In the experiment, 20 Holstein male beef cattle of 1.5 years old and each weighing average 330 kg were used as animal material. The trial was done in two stages: the first stage was pre-experimental period for 2 weeks and the second stage was the main experimental period for 10 weeks, totally lasting 12 weeks. During the whole experimental period, isocaloric and isonitrogenic 2 diets were used. In control group, feed mixtures involved 27% wheat, but in experimental group, 27% sorghum was used instead of wheat. Dried alfalfa hay was used as roughage. Both rations consisted of 80% concentrated feed and 20% roughage. The differences between the control and treatment groups, in terms of live weight gains, feed intakes, daily live weight gains, feed conversion ratios and digestibility of nutrients, during 84 days of feeding period were not significant (p>0.05). Trial results indicated that sorghum grain could be used instead of wheat as an economical energy source in beef cattle rations.
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    Effects of Sorghum on Nutrient Digestibility and Some Milk Parameters in Dairy Cow Rations
    (Medwell Online, 2008) Baran, M. S.; Gul, I.; Demirel, R.
    In this study, effects of sorghum used instead of corn as an energy source on nutrient digestibility and some milk parameters in dairy cow rations were investigated, During the 20 weeks trial period, four Holstein cows at their first lactation stage were used in 4x4 Latin square design. The trial was consisted of four periods. Each period lasted five weeks of which consisted two weeks pre-experimental period and three weeks main experimental period. Dairy cows were fed with four different rations. Good quality alfalfa was given as roughage to animals. Digestibility of nutrients were determined according to rations, as follows, respectively; dry matter: 69.16, 69.49, 69,74, 70.10%, crude ash: 26.04, 26.31, 26.42, 26.49%; organic matter: 70.35, 70.43, 70.33, 70.48%; crude protein: 69.77, 69.96, 70.20, 70.43%; etherextract: 70.74, 70.86, 71.02, 71.15%; crude fiber: 59.56, 59.75, 59.96, 60.17; Neutral Detergent Fiber (NDF): 45.92, 46.03, 46.11, 46.15% and Acid Detergent Fiber (ADF): 4.3.06, 43.17, 43.36, 43.45%. The differences for the digestibility of dry matter, crude ash, organic matter, ADIF and NDF among rations were not significant (p>0.05). However, digestibility of crude protein, ether extract and crude fiber were found significant among rations (p<0.05). According to rations percentages of milk parameters were determined as follows, respectively; dry matter: 13.23, 13.02, 13.05, 13.10%, crude ash: 0.57, 0.56, 0.58, 0.60%, pH: 6.65, 6.65, 6.66, 6.68, density: 1030, 1031, 1031, 1031 and fat-free dry matter: 9.46, 9.29, 9.33, 9.37%. Differences among milk parameters, according to rations were not significant (p>0.05). Trial results indicated that grain sorghum can be used instead of corn as an economical energy source in dairy cow rations.