The Influence of Dietary Zinc Oxide Nanoparticles on Zootechnical Performance and Biometric Indices of Growing New Zealand White Rabbits

Massoud, Eman; Gado, Walaa S.; Teleb, H.M.; El-Banna, R.A.

doi:10.21608/vmjg.2021.158008

Cited by 2 publications

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“…The LWW in this study was similar to that of Agea et al [ 18 ] and lower than the finding of El-Deghadi [ 3 ]. Then, the weight of the kits at weaning (WW) depends on the size of the litter, the weight being lower when the litter size is high [ 20 ]; from Table 1 , it is inferred that the average size of the litter at weaning was 5.68 kits, with a WW of 423.7 ± 14.5 gm. This weight was similar to that presented by Agea et al [ 18 ] and Khan et al [ 5 ], but lower than those found by Amao [ 21 ] and Fang et al [ 22 ].…”

Section: Resultsmentioning

confidence: 99%

Genetic parameters of growth traits and carcass weight of New Zealand white rabbits in a tropical dry forest area

2021

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Objective: The objective of this study was to estimate the heritability ( h 2 ), repeatability ( r ), and correlations ( r ŷ i y i ) in some traits of zootechnical interest in a population of New Zealand white rabbits of a tropical dry forest area. Materials and Methods: Three mating groups were formed, each one of 1 male and 70 females. The traits evaluated were litter size at birth (LB), born alive (BA), born dead (BD), litter weight born alive (LW), litter weight at weaning (LWW), weaning weight (WW), slaughter weight (SW), and carcass weight (CW). Weaning took place at 42 days, and the fattening phase lasted 60 ± 3 days. A descriptive statistical study was carried out on the study variables. Paternal heritability was estimated ( ) and maternal ( ), repeatability, rabbit index IC, and Pearson’s correlations ( r ŷ i y i ) between traits. The descriptive statistics showed high variation for the BD traits. Results: The values of the productivity found were similar to those presented in studies around the world. h 2 presented magnitudes between low and medium. ranged between 0.09 and 0.42 and between 0.11 and 0.45 for . In general, the values of were higher than the values of . The r values for the traits LB, BA, LW, LWW, and SW presented low magnitude, while it was medium for WW and CW. From the values of r , IC was calculated for each of the rabbits, allowing their categorization, which will be used in future selection plans. r ŷ i y i among the variables ranged from −0.01 to 0.860. They were generally positive and mostly not significant ( p > 0.05); they took a magnitude from low to moderate, except for the correlation between LB and BA. Conclusion: The production of rabbits under tropical conditions is similar to other reports. The genetic parameters evaluated were medium-to-low, indicating a robust non-additive gene and/or environmental effect.

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Section: Resultsmentioning

confidence: 99%

Genetic parameters of growth traits and carcass weight of New Zealand white rabbits in a tropical dry forest area

2021

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“…When White New Zealand Rabbits were supplemented with ZnO NPs, growth performance, meat's physical and chemical characteristics, and blood biochemistry parameters all improved according to Nano-ZnO at 50mg/kg in the diet of Male Californian Rabbits exposed to high temperatures has been shown to increase their CP and EE digestibility, lactic acid bacteria growth, ALT, AST, creatinine, and testosterone concentrations (Abdel-Wareth et al 2023). Maximizing productive performance and enhancing FCR in developing New Zealand White Rabbits with the addition of 50mg/kg ZnO NPs food in the premix has been shown to have no detrimental effects (Massoud et al 2021). ZnO NPs (25g/kg bw) have been proven to mitigate the genotoxic effects of aflatoxicosis in rabbits.…”

Section: Rabbitsmentioning

confidence: 99%

Assessing the Dual Impact of Zinc Oxide Nanoparticles on Living Organisms: Beneficial and Noxious Effects

2023

IJAB

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Article HistoryNanotechnology is gaining popularity in the realm of animal management, husbandry, and production. Zinc oxide nanoparticles (ZnO NPs) have been under scrutiny for a considerable duration. These NPs have contributed to advancements in animal agriculture, aquaculture, and veterinary medicine. Consequently, ZnO NPs have emerged as promising antimicrobial agents, especially in the context of rising multi-drug-resistant bacteria. Their heightened effectiveness in addressing a broad spectrum of infections has garnered significant attention. Moreover, Zn, recognized as an essential trace element for numerous biological functions in animals, plays a pivotal role in their overall well-being. These NPs have found utility in sunscreens, and there are assertions that they could serve as supplementary treatments to mitigate the adverse effects of chemotherapy. While ZnO NPs hold promise as anti-inflammatory, anti-diabetic, and anti-cancer agents, it is crucial to be cautious regarding alterations in their dosage, as they can entail significant hazards to multiple organs in animals, including the liver, lungs, and kidneys. In the field of biomedicine, ZnO NPs are widely utilized for disease diagnosis and monitoring owing to their substantial potential. However, their widespread adoption in biomedical applications encounters obstacles because of sporadic toxicity concerns. Indeed, they have been identified as carrying toxicological risks, affecting various bodily organs and systems, such as the liver, spleen, kidney, stomach, pancreas, heart, and lungs. Moreover, adverse effects on the nervous system, lymphatic system, hematological indices, sex hormone levels, and fetal development have been linked to these NPs. In this review, we aim to evaluate the utilization of ZnO NPs in various animal-related applications, considering both their promising benefits and potential risks.

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The Influence of Dietary Zinc Oxide Nanoparticles on Zootechnical Performance and Biometric Indices of Growing New Zealand White Rabbits

Cited by 2 publications

References 0 publications

Genetic parameters of growth traits and carcass weight of New Zealand white rabbits in a tropical dry forest area

Genetic parameters of growth traits and carcass weight of New Zealand white rabbits in a tropical dry forest area

Assessing the Dual Impact of Zinc Oxide Nanoparticles on Living Organisms: Beneficial and Noxious Effects

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