Eastern Regional Station, ICAR-National Dairy Research Institute, Kalyani, 741235, India.
Nutrition, Feed Resource and Products Technology Division, ICAR-Central Institute for Research on Goats, Makhdoom, P.O. Farah-281 122, Mathura, Uttar Pradesh, India.
Trop Anim Health Prod. 2024 Apr 13;56(3):124. doi: 10.1007/s11250-024-03964-6.
The study aimed to assess the impact of feeding Bengal gram residual forage-based pelleted Total Mixed Ration (TMR) with varying concentrate (C) to roughage (R) ratios on feed intake, nutrient utilization, growth, and carcass characteristics in Barbari kids. Sixteen weaned male Barbari kids (av. age, 233 ± 11 days; weight, 13.86 ± 0.76 kg) were divided into two groups (T and T), each receiving different pelleted diets (TMR) with distinct concentrate to roughage ratios (T with 60:40; T with 40:60). The kids were fed for 133 days, and a digestion trial was conducted at the end of the study. After completion, all kids were slaughtered. Although, kids under T consumed higher (P < 0.001) amount of dry matter, and crude protein compared to T, which was due to a higher concentrate to roughage ratio in T. But, the average daily body weight gain (ADG) of finisher kids was 88.53, and 79.83 g/d/kid in T and T, respectively; however, the difference was non-significant. Digestibility of organic matter, crude protein, and total carbohydrate was also greater in T compared to T. Total digestible nutrients intake was higher (P < 0.001) in T; similarly intake of digestible energy, and metabolizable energy were significantly increased (P < 0.01) in T compared to T. Concentrations of volatile fatty acids and NH-nitrogen were also enhanced (P < 0.05) in T compared to T. We observed similar carcass weight, and dressing percentage in both groups, and carcass composition remained unaffected. The pelleted diet containing greater ratio of concentrate: roughage (60:40) had no additional benefits in terms of ADG, and carcass traits in finisher kids. Therefore, it may be concluded that the Bengal gram residual forage-based pelleted TMR diet containing C40: R60 (TDN 57.13%, DCP 7.64%, ME 9.11MJ/kg feed) is suitable for optimizing growth performance with desirable carcass traits, and meat composition in finisher Barbari kids reared under the intensive system.
本研究旨在评估以不同浓缩物（C）与粗饲料（R）比例喂养孟加拉豆剩余草料制粒全混合日粮（TMR）对巴巴里幼崽采食量、养分利用、生长和胴体特征的影响。16 头断奶雄性巴巴里幼崽（平均年龄，233±11 天；体重，13.86±0.76kg）分为两组（T 和 T），每组接受不同的粒状饮食（TMR），具有不同的浓缩物与粗饲料比例（T 为 60:40；T 为 40:60）。幼崽饲养了 133 天，研究结束时进行了消化试验。完成后，所有幼崽都被屠宰。尽管 T 组幼崽的干物质和粗蛋白摄入量更高（P<0.001），但这是由于 T 组中浓缩物与粗饲料的比例更高。然而，育肥期幼崽的平均日增重（ADG）分别为 88.53 和 79.83g/d/只，差异不显著。与 T 相比，T 组的有机物、粗蛋白和总碳水化合物的消化率也更高。T 组的总可消化养分摄入量更高（P<0.001）；同样，T 组的可消化能和代谢能摄入量也显著增加（P<0.01）。挥发性脂肪酸和 NH-氮的浓度也在 T 组中提高（P<0.05）。两组的胴体重和屠宰率相似，胴体成分不受影响。含有更高比例浓缩物：粗饲料（60:40）的粒状饮食在育肥期幼崽的 ADG 和胴体性状方面没有额外的益处。因此，可以得出结论，以孟加拉豆剩余草料为基础的粒状 TMR 日粮，含有 40:60 的 C（总消化养分 57.13%，粗蛋白 7.64%，饲料中 ME 9.11MJ/kg），适合优化生长性能，具有理想的胴体性状和集约化系统下育肥期巴巴里幼崽的肉组成。
