Animal Waste: An Environmentally Sustainable Management Approach

Nweze, Justus Amuche; Gupta, Shruti; Akor, Joseph; Nwuche, Charles O.; Nweze, Julius Eyiuche; Unah, Victor U.

doi:10.1007/978-3-031-26224-1_1

Cited by 2 publications

(1 citation statement)

References 132 publications

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“…[43], [44] (L) Poultry farm and wet market activities Animal feces from markets and farms are important sources of microbes and suspended particles in rivers [45]- [47] Table 4 shows the prominence and relation of the criteria. The prominence is calculated as the row and column values (R+C), which show the importance criteria.…”

Section: -[36] (H) Soil Erosionmentioning

confidence: 99%

Assessment of Water in Terengganu River, Malaysia Using Multivariate Statistical Techniques and Fuzzy DEMATEL

Pairan,

Zamri,

Ismail

2023

Int. J. Adv. Sci. Eng. Inf. Technol.

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Water is essential in our daily life for life purposes and other activities. Significant water quality degradation due to natural factors and human activities can harm human health and ecosystems. Therefore, water quality monitoring is always necessary for public health and a good ecosystem. This study focuses on assessing river water quality in Terengganu involving several parameters and the location of water monitoring stations along the Terengganu River, which is linked to the second-largest dam in Malaysia. This study uses multivariate analysis such as Principal Component Analysis (PCA) and Agglomerative Hierarchical Clustering (AHC) to assess water quality in the Terengganu River. PCA investigates the origin of each parameter that contributes to river pollution. Before AHC, WQI categorized monitoring stations based on different river pollution zones. The AHC method groups all water monitoring stations based on the level of river pollution zones. Then, this study was continued with the Fuzzy Decision-Making Experiment and Evaluation Laboratory (FDEMATEL) to determine the relationship between river pollution factors. The PCA results yielded five significant factors that accounted for 55.33% of the total variance. AHC classifies three clustered areas: low, medium, and high pollution. Criterion (agricultural and irrigation run-off) is the main causal relationship from FDEMATEL. The results of this study help reveal important information about river water quality in Terengganu to control pollution sources, thus helping to maintain the health of the local population and ecosystem.

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Section: -[36] (H) Soil Erosionmentioning

confidence: 99%

Assessment of Water in Terengganu River, Malaysia Using Multivariate Statistical Techniques and Fuzzy DEMATEL

Pairan,

Zamri,

Ismail

2023

Int. J. Adv. Sci. Eng. Inf. Technol.

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Nutritional strategies for laying hens to address environmental challenges by reducing the nitrogen excretion

Vlaicu,

Untea,

Panaite

et al. 2024

Food & Feed Res

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This research aimed to assess the impact of incorporating Castanea sativa powder (CSP) into laying hens diets, examining reduced crude protein (CP) levels and their effects on production performance, haematological parameters, nutrients and mineral digestibility and environmental pollution by nitrogen (N) absorption and excretion. For that, a 6-week trial was developed, with 90 Lohmann Brown laying hens aged 51 weeks, raised in digestibility cages, divided into three groups with 30 hens each. The diets were composed as follows: a control group fed with 17.50% crude protein (CON), an experimental group with a reduced CP level of 15.50% (RPL), and a similar reduced CP group supplemented with 0.5% CSP (RPC) as tannin additive. The limiting amino acids (lysine, methionine, and threonine) were supplemented to maintain constant equal amino acid concentrations in all experimental diets. Throughout the feeding trial, the laying rate was higher in the RPC group (94.12%), followed by RLP (93.65%) and CON (91.11%). However, CON hens produced heavier eggs compared to RPL and RPC groups. Average daily feed intake and feed conversion ratio showed no significant differences (p>0.05) between the groups. Results from blood samples showed a significant increase (p<0.05) in RPL group on monocytes and uric acid compared with CON and RPC groups with tendencies for leucocytes, lymphocytes, heterophiles. Notably, excreted N levels were significantly reduced (up to 30%) in RPL (0.33 mg N/100g) and RPC (0.30 mg N/100g) groups compared to the CON (0.42 mg N/100g) group, showing a promising way of reducing N pollution. The RPC group had significantly higher (p<0.05) N content and coefficient of apparent N absorption compared with RPL group. On the other hand, the CP excretion was significantly lower (p<0.05) in the RPL (2.06 mg CP/100g) and RPC (1.94 mg CP/100g) groups compared with CON group (2.63 mg CP/100g). The lowest CP absorption was determined in the RPL group, while the RPC group (88.24%), had the highest coefficient of apparent absorption, compared with both CON (86.18%) and RPL (86.22%) groups. No significant effect on mineral excretion content was observed.

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Animal Waste: An Environmentally Sustainable Management Approach

Cited by 2 publications

References 132 publications

Assessment of Water in Terengganu River, Malaysia Using Multivariate Statistical Techniques and Fuzzy DEMATEL

Assessment of Water in Terengganu River, Malaysia Using Multivariate Statistical Techniques and Fuzzy DEMATEL

Nutritional strategies for laying hens to address environmental challenges by reducing the nitrogen excretion

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