Growth Performance, Feed Utilization, Ruminal Parameters, Economic Efficiency and Carcass Characteristics of Male Zaraibi Goats Fed Rations Containing Linssed or Sunflower Oils = أداء النمو وكفاءة تحويل الغذاء وبعض قياسات الكرش والدم والكفاءة الاقتصادية وصفات الذبيحة في ذكور الماعز الزرايبي المغذاة على علائق تحتوي على زيت بذور الكتان ودوار الشمس

2018 ◽  
Vol 13 (1) ◽  
pp. 1-17
Author(s):  
A. M. Abd Elgawad ◽  
G. I. El-Emam
Keyword(s):  
Growth Performance ◽  
Economic Efficiency ◽  
Carcass Characteristics ◽  
Feed Utilization ◽  
Sunflower Oils

scholarly journals The Dietary Supplemental Effect of Nitroethanol in Comparison with Monensin on Methane Emission, Growth Performance and Carcass Characteristics in Female Lambs

Animals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 327
Author(s):  
Zhen-Wei Zhang ◽  
Yan-Lu Wang ◽  
Yong-Yan Chen ◽  
Luo-Tong Zhang ◽  
Ying-Jie Zhang ◽  
...  
Keyword(s):  
Energy Loss ◽  
Growth Performance ◽  
Economic Efficiency ◽  
Carcass Characteristics ◽  
Basal Diet ◽  
Nutrient Digestibility ◽  
Dietary Energy ◽  
Ch4 Production ◽  
Net Revenue ◽  
Emission Growth

This study was conducted to evaluate the dietary supplemental effects of 2-nitroethanol (NEOH) in comparison with monensin on methane (CH4) emission, growth performance and carcass characteristics in female lambs. Sixty female, small-tailed Chinese Han lambs (3.5 ± 0.3 month) were randomly allotted into three dietary treatment groups: (1) Control group, a basal control diet, (2) monensin group, the basal diet added with 40 mg/kg monensin, (3) NEOH group, the basal diet added with 277 mg/kg nitroethanol, and the feedlotting trial lasted for 70 days. Although dietary addition of monensin and NEOH did not affect nutrient digestibility of lambs, both monensin and NEOH decreased the calculated CH4 production (12.7% vs. 17.4% decrease; p < 0.01). In addition, the CH4 production represents less dietary energy loss in the monensin and NEOH group than in the control, indicating that monensin and NEOH are potent CH4 inhibitors that can reduce dietary energy loss. Dietary addition of monensin and NEOH decreased dry matter intake (p < 0.01); however, they increased the ADG of female lambs (p < 0.01). As a result, both monensin and NEOH increased feed conversion efficiency of the feedlotting lambs (p < 0.01), suggesting that feed energy saved from CH4 production promoted the feed efficiency and ADG in the present study. Except for the fact that NEOH addition increased the net muscle percentage to carcass weight (p = 0.03), neither monensin nor NEOH had a significant influence on carcass characteristics of female lambs (p > 0.05). From an economic point of view, NEOH and monensin caused a reduction in feed consumption costs, therefore resulting in a higher net revenue and economic efficiency than the control. In summary, dietary supplementation of NEOH in comparison with monensin presented a more promoting effect on energy utilization in female lambs by inhibiting rumen methanogenesis more efficiently, and NEOH improved the net revenue and economic efficiency more significantly than monensin.

Evaluation of use effective microorganisms (EM) with different feeding strategies on growth performance, body chemical composition and economic efficiency of monosex Nile tilapia Oreochromis niloticus juveniles

2021 ◽  
Vol 34 ◽  
pp. 21
Author(s):  
Mohamed F. Abdel-Aziz ◽  
Yaseen A. Abdel-Tawwab ◽  
Mohamed F. Sadek ◽  
Abdel Moneim M. Yones
Keyword(s):  
Chemical Composition ◽  
Growth Performance ◽  
Economic Efficiency ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Basal Diet ◽  
Feed Utilization ◽  
Fish Growth ◽  
Feeding Strategies ◽  
Effective Microorganisms

A factorial trial was conducted to detect the effect of different feeding strategies of supplementation of effective microorganisms (EM) liquid on the growth performance, feed utilization, body chemical composition and economic efficiency of monosex Nile tilapia (Oreochromis niloticus) juveniles. Three experimental treatments were formulated a basal diet without any addition of EM (control; A), a diet supplemented with 2% EM (B), and a diet supplemented with 4% EM (C). All treatments were offered to fish through two different strategies of feeding the meal: 2/3 in the morning and 1/3 in the afternoon or 1/3 in the morning and 2/3 in the afternoon. Each treatment was replicated three times. Juveniles Nile tilapia with an average initial body weight of 3.85 ± 0.22 g (± SE) were randomly stocked at a rate of 90 juveniles per 1.5 m3 tank. Fish growth performance and feed utilization significantly (P ≤ 0.05) increased with increasing EM supplementation and were positively affected by different feeding strategies. Moreover, the economic evaluation showed that there were more benefits by when using the 4% EM diet and feeding 2/3 of daily meal in the morning.

Sign in / Sign up

Export Citation Format

Share Document