Influence of different substitutions of ground-to-whole sorghum grain in high-concentrate diets on weight gain,Longissimus dorsi area and subcutaneous fat of growing goats |
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| Authors: | F Montemayor M A Dominguez-Muñoz C C Zapata-Campos |
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| Institution: | Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Tamaulipas, Cd. Victoria, Tamaulipas, Mexico |
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| Abstract: | The effect of different proportions of ground-to-whole sorghum grain on weight gain, Longissimus dorsi area (LDA) and subcutaneous fat (SF) was evaluated in 20 crossbred (75% Alpine and 25% Spanish) female kid goats, 75 d of age (12.9?±?1.8?kg BW body weight]) fed a diet (14% CP crude protein], 2.57 Mcal/kg ME metabolizable energy]) in which whole sorghum grain (WSG) substituted for 0%, 25% and 50% of ground sorghum grain for treatments T1 (n?=?7), T2 (n?=?7) and T3 (n?=?6), respectively. At the end of the 122-d feeding trial, goats were evaluated using ultrasound for LDA and SF. There were no differences (P?>?.05) among treatments in average daily gain (183, 183 and 190?g/d) and LDA (14.02, 13.70 and 14.70?cm2). SF decreased (linear effect; P?=?.05) with an increase in dietary WSG. In conclusion, feedlot goats exhibited adequate growth performance using diets with up to 50% WSG, without negative effect on LDA, although SF decreased with WSG increase. |
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| Keywords: | Sorghum grain processing feedlot goats |
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