Singh Sultan, Nag Subir Kumar, Maity Subhendu Bikash, Kushwaha Badri Prasad
Plant Animal Relationship Division, Indian Grassland and Fodder Research Institute, Jhansi, 284003, Uttar Pradesh, India.
Trop Anim Health Prod. 2013 Jan;45(1):251-7. doi: 10.1007/s11250-012-0198-x. Epub 2012 Jun 24.
A study was undertaken to evaluate the nutritional response of organically grown diets in buffaloes on nutrients utilization and nutrient efficiency for milk production. For this, ten milch Murrah buffaloes of average body weight (490.72 ± 6.65 kg), milk yield (8.13 ± 0.33 kg), and lactation stage (85 ± 5.28 days) were distributed in inorganic (InDg()) and organic dietary groups (OrDg) with five animals in each. Buffaloes of InDg and OgDg were fed sorghum hay-berseem fodder-concentrate mixture-based diets grown inorganically and organically, respectively. After 60 days of feeding, a digestion cum metabolism trial was conducted to assess feed intake, nutrient utilization, and N balance, while milk yield and composition were recorded fortnightly. DM, CP, digestible crude protein (DCP), and metabolizable energy (ME) intake (g/Kg w(0.75)) were similar in animals of InDg and OrDg. NDF, ADF, and hemicellulose digestibility were (P < 0.05) higher in animals on OrDg (59.20, 51.55, and 62.67) than InDg diet (54.57, 43.72, and 56.61 %), respectively. Urinary n loss (g/day) was (P < 0.05) lower in OrDg (67.23) than in InDg (83.55); however, milk N was comparable in animals of both dietary groups (47.36 vs 45.82 g/day). Nitrogen balance was higher in animals of OrDg (39.72) than in InDg (28.08). DCP, TDN, and ME values of both diets were similar. No effect of diet was observed on milk yield and its composition; however, increased lactation length decreased milk yield. Buffaloes on both diets had similar efficiency and conversion ratio of nutrients for milk production. Results revealed that diets (organically vs. inorganically grown) have no effect on milk yield and its composition; however, buffaloes on organic diet have higher fiber digestibility and low urinary N loss which did not affect the dietary nutrients efficiency and conversion ratio for milk production.
开展了一项研究，以评估有机饲养日粮对水牛营养利用和产奶营养效率的营养反应。为此，将10头平均体重（490.72±6.65千克）、产奶量（8.13±0.33千克）和泌乳阶段（85±5.28天）的产奶穆拉水牛分为无机日粮组（InDg）和有机日粮组（OrDg），每组5头。InDg和OrDg组的水牛分别饲喂以无机和有机方式种植的高粱干草-埃及三叶草饲料-精料混合物为基础的日粮。饲喂60天后，进行了消化代谢试验，以评估采食量、营养利用和氮平衡，同时每两周记录一次产奶量和奶成分。InDg和OrDg组动物的干物质（DM）、粗蛋白（CP）、可消化粗蛋白（DCP）和代谢能（ME）摄入量（克/千克体重0.75）相似。OrDg组动物的中性洗涤纤维（NDF）、酸性洗涤纤维（ADF）和半纤维素消化率（P<0.05）高于InDg日粮组，分别为59.20%、51.55%和62.67%，而InDg日粮组分别为54.57%、43.72%和56.61%。OrDg组的尿氮损失（克/天）（P<0.05）低于InDg组（67.23比83.55）；然而，两组日粮动物的奶氮含量相当（47.36对45.82克/天）。OrDg组动物的氮平衡高于InDg组（39.72比28.08）。两种日粮的DCP、总可消化养分（TDN）和ME值相似。未观察到日粮对产奶量及其成分有影响；然而，泌乳期延长会降低产奶量。两种日粮的水牛在产奶营养效率和转化率方面相似。结果表明，日粮（有机种植与无机种植）对产奶量及其成分没有影响；然而，有机日粮组的水牛纤维消化率较高，尿氮损失较低，这并未影响日粮产奶营养效率和转化率。
