Animal Production Research Institute, Agricultural Research Centre, Ministry of Agriculture, Dokki, Giza, Egypt.
Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma del Estado de México, Toluca, México.
Trop Anim Health Prod. 2022 May 11;54(3):185. doi: 10.1007/s11250-022-03189-5.
This study aimed to evaluate the effects of rations containing restaurant food waste (RFW) on nutrient digestibility, milk yield and its composition, and some blood parameters of lactating Zaraibi goats. In the last month of pregnancy, 30 goats (32.8 + 0.91 kg body weight and aged 3-4 years) were chosen and divided into three similar groups (10 goats per group). Each group was randomly assigned to be fed one of the experimental rations. The control group (R1) fed on a ration comprising concentrate feed mixture (CFM1) and berseem as a fresh roughage whereas the second (R2) and the third groups (R3) fed on CFM partially substituted by 15 and 30% of RFW (CFM2 and CFM3, respectively). Nutrient digestibility and feeding values were improved with R3 goats, which had the highest level of RFW (30%) versus R2 and R1 goats. The total volatile fatty acid (TVFA) concentration in the in-rumen liquor was elevated by increasing the level of RFW up to 30% in CFM3 of R3 goats. Actual daily milk yields were significantly (P < 0.05) higher (1269.30 g/h/d) for R3 goats versus R1 and R2 (1037.57 and 1180.70 g/h/d, respectively). The inclusion of RFW in rations had a significant effect on the yield of milk constituents, without significant different among experimental rations regarding some blood constituents and offspring performance. Economic feed efficiency (relative feed cost and relative daily profit) was improved by including RFW in the CFM. Therefore, it can be concluded that the inclusion of up to 30% RFW improved productive performance and economic efficiency in lactating Zaraibi goat rations.
本研究旨在评估含有餐厅食物垃圾（RFW）的日粮对泌乳期扎拉比山羊的养分消化率、产奶量及其组成和一些血液参数的影响。在妊娠最后一个月，选择了 30 只山羊（32.8±0.91kg 体重，年龄 3-4 岁），并将其分为三组（每组 10 只）。每组随机分配一种实验日粮。对照组（R1）以精饲料混合物（CFM1）和金合欢干草作为新鲜粗饲料进行饲养，而第二组（R2）和第三组（R3）则以 CFM 部分替代 15%和 30%的 RFW（CFM2 和 CFM3）进行饲养。随着 R3 组山羊 RFW（30%）水平的提高，养分消化率和饲养价值得到了改善。随着 CFM3 组中 RFW 水平的增加，瘤胃内总挥发性脂肪酸（TVFA）浓度升高。实际日产奶量（1269.30g/h/d）显著（P＜0.05）高于 R1 和 R2（分别为 1037.57g/h/d 和 1180.70g/h/d）。日粮中添加 RFW 对奶成分的产量有显著影响，但在实验日粮中，一些血液成分和后代性能没有显著差异。在 CFM 中添加 RFW 提高了经济饲料效率（相对饲料成本和相对日利润）。因此，可以得出结论，在泌乳期扎拉比山羊日粮中添加高达 30%的 RFW 可以提高生产性能和经济效率。
