PJB-2024-472
Ahmad shah
Abstract
ABSTRACT
Novel hybrid maize (Zea mays L.) silage is one of the best forage source considered as supplemented in the ration of dairy animals in dry periods of the year when high quality fodder is unavailable to animals. It has good ensiling quality with high metabolizable energy content and high soluble starch content. Due to its high nutritional value and availability, it can be easily mixed with total mixed ration. The result of adding maize silage will results in increase in total dry matter intake (DMI) and production of milk. The assessment of nutritional composition of the novel hybrid maize silage showed that it also contains sufficient amount of macro and micro minerals. To further evaluate the dietary value of this hybrid maize silage, this present study was planned. The study included determination of the nutritional value, mineral profile, and in vitro digestibility of the newly developed hybrid maize silage (jumbo).The trials included collection of maize samples from research farms of The University of Agriculture, Peshawar and Agriculture Training Institute at Tarnab while the proximate analysis and in vitro dry matter digestibility of samples were carried out at the department of Animal Nutrition. The outcome of the research trials after analysis showing that there are significant differences (p<0.05) in the content of DM of the novel hybrid maize silage (HMSUAP1) being highest which is followed by HMSTF1 while the lowest value for DM is recorded for novel hybrid maize silage (HMSUAP2) which is followed by HMSTF2. The crude fiber content (CF) content of novel hybrid maize silage (HMSUAP2) was highest, followed by sample HMSTF2, while the lowest CF content was found in sample HMSUAP1. Ash content was highest for HMSUAP2 which is followed by HMSTF2, while ash value is lowest for HMSUAP1 followed by HMSTF1. No effect of EE on both locations sample of novel hybrid maize silage because the EE content was not significantly different for both HMSUAP and HMSTF. The results of the research study determines that NDF content was highest for HMSTF2 followed by HMSUAP2, while lowest for sample of HMSUAP1 followed by sample HMSTF1. The NDF content was significantly different for all HMS for both HMSUAP and HMSTF (p<0.0001). ADF content was highest for HMSTF2 followed by HMSUAP2, while lowest for sample HMSTF1 followed by HMSUAP1.The results also show that IVDMD % is highest for HMSTF1, followed by HMSUAP1. The macro minerals profile of HMSTF2 and HMSUAP2 showed similar values for Ca, Mg, K, and P content, with HMSUAP2 slightly lower for Mg. HMSUAP1 had the highest Mn content (90.3 mg/kg), highest Fe content (740.0 mg/kg), highest Zn content (25.6 mg/kg), and highest Cu content (7.0 mg/kg).In conclusion, the proximate analysis of novel HMS has almost the same values for HMSTF and HMSUAP but the HMSUAP has high values for DM%,and Ash%, indicating good overall IVDMD% and HMSTF has high values for CP%, NDF and ADF while the macro mineral is similar for both locations but HMSUAP has lower value for Mg and the micro minerals Mn, Zn, was highest for HMSUAP and Fe, Cu was highest for HMSTF.
Key words: Novel Hybrid Maize Silage, nutritional value, proximate analysis, micro and macro minerals, in vitro dry matter digestibility
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