Iommelli Piera, Zicarelli Fabio, Amato Ruggero, Musco Nadia, Sarubbi Fiorella, Bailoni Lucia, Lombardi Pietro, Di Bennardo Federica, Infascelli Federico, Tudisco Raffaella
Department of Veterinary Medicine and Animal Production, University of Napoli Federico II, 80100 Napoli, NA, Italy.
Institute for the Animal Production System in the Mediterranean Environment, National Research Council, 80055 Portici, NA, Italy.
Animals (Basel). 2024 Aug 16;14(16):2373. doi: 10.3390/ani14162373.
Hemp ( L.) is a cosmopolitan annual herbaceous plant used in the past as a source of textile fiber. Currently, hemp is receiving great interest as animal feed due to its chemical and nutritional properties. The aim of this study was to explore the effects of supplementing goats' diets with hemp hay on the milk yield, chemical composition, and fatty acid profile. Twenty multiparous goats, immediately after kidding, were divided into two homogenous groups (C: control vs. H: hemp); the goats had free access to the pasture, and both groups received a supplement of 500 g/head/day of a barley and corn meal mixture (50/50). In addition, group H was given 250 g/head/day of hemp hay while group C received the same amount of alfalfa hay. The milk yield was measured daily, and milk samples were collected monthly 4 times to evaluate the milk composition and fatty acid profile. The milk yield was significantly ( < 0.05) higher in the experimental group, while no differences were found in the milk chemical composition. Concerning the fatty acid profile, the milk from group H was characterized by significantly lower concentrations of C11:0, C12:0, C13:0, C14:0, C15:0, and C17:0 and higher C16:0 and C18:0. Among the polyunsaturated FA, C18:2 n6 and C20:4 were significantly ( < 0.001) lower, and C20:5 n3 was significantly ( < 0.05) higher in the milk from group H than that from group C. The n6/n3, LA/ALA and AA/EPA ratios were significantly ( < 0.001) lower in the milk from group H, while the CLAs were unaffected by the treatment.
大麻（L.）是一种遍布全球的一年生草本植物，过去用作纺织纤维来源。目前，由于其化学和营养特性，大麻作为动物饲料备受关注。本研究旨在探讨用大麻干草补充山羊日粮对产奶量、化学成分和脂肪酸谱的影响。20只经产母羊在产羔后立即分为两个同质组（C：对照组 vs. H：大麻组）；山羊可自由采食牧场，两组均接受每天每头500克大麦和玉米粉混合物（50/50）的补充料。此外，H组每天每头给予250克大麻干草，而C组给予等量的苜蓿干草。每天测量产奶量，每月采集4次奶样以评估奶的成分和脂肪酸谱。实验组的产奶量显著更高（<0.05），而奶的化学成分未发现差异。关于脂肪酸谱，H组奶的特点是C11:0、C12:0、C13:0、C14:0、C15:0和C17:0的浓度显著较低，C16:0和C18:0较高。在多不饱和脂肪酸中，H组奶中C18:2 n6和C20:4显著（<0.001）较低，C20:5 n3显著（<0.05）高于C组奶。H组奶中n6/n3、LA/ALA和AA/EPA比值显著（<0.001）较低，而共轭亚油酸不受处理影响。
