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English :

Impact of replacing some inorganic with organic minerals on: 1- growing rabbits performance and minerals retention

Arabic :

تأثير احلال بعض المعادن العضوية بالغير عضوية على 1- اداء الارانب النامية و العناصر المعدنية المحتجزة في الذبيحة

Abstract

An experiment was designed to evaluate the Influence of replacing some dietary organic minerals on growing rabbit performance and carcass minerals retention. A total of 80 New Zealand White weaning rabbits, 5-week-old, were allotted equally into 8 dietary treatments of 1 9 individual replicate rabbits each. Treatments were: T1 (control), all inorganic trace mineral source from diet premix, T2, organic (Zn) with all inorganic minerals except Zn that was organic. The other treatments follow the same manner as in T2, T3, organic (Mn), T4, organic (Se) , T5, orga nic-(Zn + Mn), T6, organic(In+Se), T7, organic (Mn+Se) and T8, organic (Zn+Mn+Se). Organic replaced inorganic minerals with 50 % of the same recommended levels for rabbit requirements (NRC, 1977). The premix was formulated to contain trace elements in combination of either inorganic (Sulphate form) or organic form (peptide chelate form). Selenium was provided in form of yeast enriched selenium. Rabbits performance including body weight gain, feed conversion, carcass traits and blood and carcass mineral retentions were evaluated. Results indicated that body weights and weight gains were significantly higher for rabbits fed diets containing organic minerals. The highest body weight and weight gain was achieved when rabbits fed diet containing a combination of organic (Zn+Se) compared to other groups. Regarding feed conversion ratio, rabbits received organic minerals showed a significant improvement in FCR compared to that resulted from group of rabbits fed inorganic minerals. Carcass weight showed insignificant improvement while abdominal fat was significantly reduced with organic trace mineral. Blood mineral retentions were significantly increased with organic minerals. Likewise, carcass mineral retention was significantly increased with organic minerals. It is concluded that replacing some inorganic with organic minerals improved body weight gain, feed conversion ratio, carcass mineral retention and immunity status. Key words: Organic minerals (Zn,Mn, Se), rabbit performance.

Publication year

2012

Pages

1540-1552

Availability location

معهد بحوث الانتاج الحيوانى-شارع نادى الصيد- الدقى- الجيزة

Availability number

Organization Name

Animal Production Research Institute (APRI)

City

الاسكندرية

serial title