NDLI: A . Effect of Dietary Zinc Levels on Some Performance Traits of Doe and Weaning Rabbits under Summer Season

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A . Effect of Dietary Zinc Levels on Some Performance Traits of Doe and Weaning Rabbits under Summer Season

Content Provider	Semantic Scholar
Author	Abdel-Khalek Ayat, Ragab A.
Copyright Year	2017
Abstract	Two separate experiments were carried out on APRI rabbits to study the effect of dietary zinc levels (30, 60, 90 or 120 mg/kg diet) on reproductive performance of breeding does and on growth performance of weaned rabbits during summer season. Sixtymulti-parious does (Exp. I) and other eighty weaned (Exp. II) were equally assigned to the dietary Zn treatments. In Exp. I, results indicate that dietary Zn levels had no significant effect on parameters including live body weight at kindling, litter size at kindling, litter weight at kindling and feed intake during gestation. Also, activity of superoxide dismutase enzyme in blood of lactating does was not affected by dietary Zn level. While, litter weight at weaning and feed intake during lactation were significantly higher in does fed 90 mg Zn/kg diet compared to other treatments (P<0.05). In Exp. II, results indicate significant treatment differences (P<0.05) for all studied growth variables (live weight gain, feed intake and feed conversion ratio). Again, the best results were recorded with dietary Zn level of 90 mg/kg diet compared to the other dietary Zn levels. Rabbits fed 90 mg Zn/kg diet had 25.3% more total weight gain and 14.6% better feed conversion ratio compared to rabbits fed 30 mg Zn/kg diet. In conclusion it is recommended to provide the diets for pregnant and lactating rabbits, as well as fattening rabbits with 90 mg Zn/kg diet to maximize performance during summer season.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://world-rabbit-science.com/WRSA-Proceedings/Congress-2016-Qingdao/Papers/F-Feeds&Feeding/F01-Abdel%20Khalek.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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