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Feed intake and digestibility of nutrients on the feeding of all roughage ration with or without concentrate to lactating general service gs mares

Feed intake and digestibility of nutrients on the feeding of all roughage ration with or without concentrate to lactating general service gs mares

Indian Veterinary Medical Journal 13(3): 177-180

Feed intake and digestibility of nutrients on ad libitum feding of all-roughage ration with or without supplementation of concentrates were studied in 4 groups of 5 lactating GS mares in each group. Voluntary dry matter intake increased significantly on concentrate supplementation. There was no significant difference in the digestibility of nutrients except significnat increase in nitrogen-free extract (NFE) digestibility on concentrate feeding. All roughage ration was composed of chaffed oat hay and green lucerne in the ratio of 1:3 on fresh basis and concentrate: roughage ratio in dry matter intake was 0:100, 9:91, 16:84 and 30:70 in groups 1, 2, 3 and 4 respectively. Mean dry matter intake in corresponding groups was 3.58, 3.63, 3.76 and 3.76 kg per 100 kg body weight and 154, 150, 157 and 160 g per kg metabolic body size (W 0.75). The mean digestible crude protein (DCP) and total digestible nutrients (TDN) percentages on dry matter basis were 9.88 and 50.98 in group 1, 9.93 and 52.21 in group 2, 9.71 and 54.29 in group 3 and 9.71 and 55.67 in group 4. Mean daily milk yield in 4 months lactation was 3.72, 3.94, 4.80 and 4.38 kg in group 1 to 4 respectively.

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