水牛奶牛犊饲喂玉米水培饲料对生长性能、氮平衡、养分消化率、血液学和血液代谢物的影响。

Effects of feeding maize hydroponic fodder on growth performance, nitrogen balance, nutrient digestibility, hematology, and blood metabolites of water buffalo calves.

机构信息

Department of Animal Sciences, College of Agriculture, University of Sargodha, Pakistan.

Department of Medical Laboratory Techniques, College of Medical Technology, Al-Kitab University, Kirkuk, 36001, Iraq.

出版信息

Open Vet J. 2023 Dec;13(12):1607-1613. doi: 10.5455/OVJ.2023.v13.i12.10. Epub 2023 Dec 31.

DOI:10.5455/OVJ.2023.v13.i12.10

PMID:38292708

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10824088/

Abstract

BACKGROUND

A hydroponic feeding system enables more effective utilization of the entire plant than typical grazing, which only consumes the plant's shoot.

AIM

This study evaluated the effects of feeding maize hydroponic fodder on growth performance, nitrogen balance, nutrient digestibility, hematology, and blood metabolites of buffalo calves.

METHODS

Twelve water buffalo calves, weighing an average of 112 ± 1.18 kg and between 8 and 10 months old, were divided into three treatments, each with four calves. Each group received one of the treatment diets: T1: the basal diet (BD) at 100%; T2: the BD plus hydroponic feed meal (HFM) at 80%: 20%; and T3: the BD plus HFM at 60%: 40%. For 100 days, each animal was fed ; the first ten days were used for nutritional adaptation, and the final ten days were used for collection. In addition to their BD, each animal received 200 g/day of a normal concentrate mixture to meet their maintenance needs. The BD included Green Hay (Lucerne) 80% and Wheat straw 20%. Each animal's daily feed consumption was noted. Calves were weighed biweekly to track growth. Upon completion of the experiment, blood samples were obtained.

RESULTS

The amount of dry matter (DM) consumed by ruminants fed diets, including hydroponic fodder, was considerably higher ( < 0.05). Similar trends were seen in crude protein (CP), acid detergent fiber, and neutral detergent fiber intake. Ingesting of CP was highest in animals fed T3. Animals fed diets comprising BD 60% + HFM 40% had the highest levels of DM and CP digestibility. Animals fed the T3 diet (BD 60% + HFM 40%) showed the best feed conversion values ( ˂ 0.05). Blood metabolites like blood urea nitrogen, creatinine, and glucose showed non-significant variations in all experimental animals. In hematology, a similar trend was seen.

CONCLUSION

Therefore, it can be said that supplementing the diet with more HFM helped growing buffalo calves gain weight, have a lower feed consumption ratio, and digest their food more efficiently.

摘要

背景

与典型的放牧相比，水培喂养系统可以更有效地利用整株植物，因为后者只消耗植物的地上部分。

目的

本研究评估了给水牛犊饲喂水培饲料对其生长性能、氮平衡、养分消化率、血液学和血液代谢物的影响。

方法

将 12 头体重平均为 112 ± 1.18kg、8-10 月龄的水牛犊分为 3 组，每组 4 头。每组接受一种处理日粮：T1：基础日粮（BD）100%；T2：BD 加水培饲料 80%：20%；T3：BD 加水培饲料 60%：40%。100 天内，每只动物都喂食；前 10 天用于营养适应，最后 10 天用于收集。除了基础日粮（BD）外，每只动物还额外喂食 200g/天的普通浓缩混合物以满足其维持需要。BD 包括 80%的绿干草（紫花苜蓿）和 20%的小麦秸秆。记录每只动物的日采食量。每隔两周对犊牛进行称重，以跟踪其生长情况。实验结束时，采集血液样本。

结果

与其他组相比，饲喂包括水培饲料在内的日粮的反刍动物消耗的干物质（DM）量显著更高（<0.05）。粗蛋白（CP）、酸性洗涤剂纤维和中性洗涤剂纤维的摄入量也呈现出相似的趋势。在 T3 组中，动物的 CP 摄入量最高。在摄入 BD 60%+HFM 40%日粮的动物中，DM 和 CP 消化率最高。饲喂 T3 日粮（BD 60%+HFM 40%）的动物表现出最佳的饲料转化率（<0.05）。所有实验动物的血液代谢物如血尿素氮、肌酐和葡萄糖的变化均不显著。在血液学方面也呈现出相似的趋势。