Effects of feeding dried olive (Olea europaea) leaves with wheat strawconcentrate rations on feed conversion efficiency in Awassi rams

IF 0.9 4区农林科学 Q3 AGRICULTURE, DAIRY & ANIMAL SCIENCE

Tropical Grasslands-Forrajes Tropicales Pub Date : 2022-09-30 DOI:10.17138/tgft(10)297-301

M. Alomar, M. Al-Masri, M. Zarkawi

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引用次数: 2

Abstract

Three groups of Awassi rams were fed for 6 weeks either a conventional wheat straw-concentrate ration (Control) or 2 experimental rations, where 30 (G1) and 60% (G2) of the wheat straw was replaced with dried olive leaves following oil extraction. All rations were isocaloric and isonitrogenous. Feed intake (FI), bodyweight gain (BWG) and feed conversion efficiency (FCE) were measured. BWG and FI during the 6-week period were not significantly (P>0.05) different for the different rations, averaging 4.75 and 116 kg/animal, respectively. In addition, there were no significant (P>0.05) differences in FCE values between the Control and experimental groups fed wheat straw + olive leaves, averaging 24.6 kg feed/kg gain. These results suggest that dried olive leaves can replace wheat straw in wheat straw-concentrate rations at levels up to 60% without affecting performance. Further studies are needed to determine optimal combinations of straw, olive leaves and concentrate to achieve different goals as well as intakes and performance when offered rations ad lib. Economic assessments would determine if including olive leaves would reduce the costs of feeding.

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小麦秸秆集中日粮饲喂橄榄干叶对Awassi公羊饲料转化率的影响

将三组Awassi公羊喂入常规小麦秸秆浓缩日粮（对照）或2个实验日粮6周，其中30（G1）和60%（G2）的小麦秸秆在榨油后用干橄榄叶代替。所有的口粮都是等热量和等氮的。测定了采食量（FI）、增重（BWG）和饲料转化效率（FCE）。6周期间，不同日粮的BWG和FI没有显著差异（P>0.05），平均分别为4.75和116kg/只。此外，饲喂小麦秸秆+橄榄叶的对照组和实验组之间的FCE值没有显著差异（P>0.05），平均每公斤增加24.6公斤饲料。这些结果表明，在不影响性能的情况下，干橄榄叶可以在高达60%的小麦秸秆浓缩口粮中取代小麦秸秆。需要进一步的研究来确定秸秆、橄榄叶和浓缩物的最佳组合，以实现不同的目标，以及在提供免费口粮时的摄入量和表现。经济评估将确定包括橄榄叶是否会降低喂养成本。

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来源期刊

Tropical Grasslands-Forrajes Tropicales Agricultural and Biological Sciences-Agronomy and Crop Science

CiteScore

1.60

自引率

0.00%

发文量

审稿时长

16 weeks

期刊介绍： The Journal publishes, in English or Spanish, Research Papers and Short Communications on research and development, as well as contributions from practitioners (Farmer Contributions) and Review Articles, related to pastures and forages in the tropics and subtropics. There is no regional focus; the information published should be of interest to a wide readership, encomprising researchers, academics, students, technicians, development workers and farmers. In general, the focus of the Journal is more on sown (''improved'') pastures and forages than on rangeland-specific aspects of natural grasslands, but exceptions are possible (e.g. when a submission is relevant for a particularly broad readership in the pasture and forage science community). The Journal will also consider the occasional publication of associated, but closely related, research in the form of an additional scientific communication platform [e.g. a re-make of the former Genetic Resources Communication series of the former Division of Tropical Crops and Pastures of the Commonwealth Scientific and Industrial Research Organisation (CSIRO), Australia]. Areas of particular interest to the Journal are: Forage Genetic Resources and Livestock Production[...] Environmental Functions of Forages[...] Socio-economic Aspects[...] Topics within the aforementioned areas may include: Diversity evaluation; Agronomy; Establishment (including fertilization); Management and utilization; Animal production; Nutritive value; Biotic stresses (pests and diseases, weeds); Abiotic stresses (soil fertility, water, temperature); Genetics and breeding; Biogeography and germplasm collections; Seed production; Ecology; Physiology; Rhizobiology (including BNF, BNI, mycorrhizae); Forage conservation; Economics; Multilocational experimentation; Modelling.