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Level and period of realimentation to assess improvement in body condition and carcass quality in cull ewes

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A Publisher’s Erratum to this article was published on 22 February 2014

Abstract

Improvement in body condition was assessed in 40 cull ewes (>6 years), equally distributed in two groups and realimented with ad libitum roughage (gram straw) and two levels of concentrate feeding, i.e., 2.5 % (T1) of live weight (LW) and ad libitum (T2). Five representative animals from an initial 45 were slaughtered at the initiation of the study (0 day) and five animals from each treatment at 44, 67, and 90 days of experiment for carcass attributes. Improvement in body condition score (BCS), nutrient utilization, feed efficiency, and carcass traits were assessed at 44, 67, and 90 days. Metabolism trial of 6-day collection of feed, feces, and urine samples was conducted on five representative ewes from each group after 60 days of feeding. The level of concentrate feeding on LW gain and BCS was significant, and the duration of realimentation showed a linear improvement (P < 0.001). The digestibility and intake of dry matter, organic matter, and crude protein was higher (P < 0.05) in T2. The N intake, absorption, and balance showed a similar trend. Increase (P < 0.05) in total N, trichloroacetic acid precipitable N, and ammonia N was observed with extension of realimentation period. Blood metabolic profile also showed improvement (P < 0.05) from an undernourished state to normal after alimentation. Animals in T2 accumulated higher LW with minimal expenditure of metabolizable energy (73.4 vs 79.1 MJ) and higher efficiency of feed conversion during 68 to 90 days of realimentation. Linear improvement (P < 0.01) in carcass traits (preslaughter weight, empty live weight, hot carcass weight, dressing percentage, and amount of subcutaneous and intramuscular fat) and composition of longissimus dorsi muscle was observed. Ad lib concentrate supplementation for a period of 90 days may thus be considered appropriate for achieving desired efficiency of gain and improvement in body condition of cull ewes for quality mutton production.

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Authors and Affiliations

  1. Division of Animal Nutrition, Central Sheep and Wool Research Institute, Avikanagar, Malpura, Rajasthan, India, 304 501

    Randhir Singh Bhatt, Nira Manik Soren, Artabandhu Sahoo & Shaikh Abdul Karim

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  1. Randhir Singh Bhatt
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  2. Nira Manik Soren
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  3. Artabandhu Sahoo
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  4. Shaikh Abdul Karim
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Correspondence to Artabandhu Sahoo.

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An erratum to this article is available at http://dx.doi.org/10.1007/s11250-014-0555-z.

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Bhatt, R.S., Soren, N.M., Sahoo, A. et al. Level and period of realimentation to assess improvement in body condition and carcass quality in cull ewes. Trop Anim Health Prod 45, 167–176 (2012). https://doi.org/10.1007/s11250-012-0188-z

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