Growth Performance of Hariana Heifers as Affected by Varying Dietary Neutral Detergent Fibre Levels
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Keywords:
Growth, Heifers, neutral detergent fibre, nutrient utilizationAbstract
Present study was conducted to see the effect of supplementation of different levels of dietary neutral detergent fiber (NDF) on growth performance of indigenous Hariana heifers. Dietary NDF were 45.46, 49.77, 54.70, and 59.02% in four group having concentrate and roughages in the ratio of 50:50. Twenty Hariana heifers of 1 to 2 years of age were randomly allocated into 4 groups (T1, T2, T3 and T4) having 5 animals in each group, on body weight basis. Body weight, body condition score and dry matter intake were recorded fortnightly. In present study temperature humidity index varied from 76.96 to 80.78. Respiration rate (RR), pulse rate (PR) and rectal temperature (RT) remained similar in all the experimental animals and they were found in normal physiological range. Average body weight, metabolic body weight, and body condition score were not impacted by different levels of dietary NDF diet. However, average daily gain was lower in high NDF groups. Feed conversion ratio and overall DM intake also remained similar in all the experimental groups. Nutrient digestibility and digestible nutrient intake were not impacted by supplementation of different levels of dietary NDF diet to Hariana heifers. Dry matter intake (kg/100 kg BW) and TDN intake (g/kg W0.75) improved in lower percentage of fibrous diet as compared to higher, to supplemented group during digestion trial. In conclusion, a dietary NDF level of below 50 is beneficial in summer stressed Hariana heifers as daily gain was lower in higher NDF fed animals.
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