Effect of weaning age and housing model on feed intake, growth performance, hemato-biochemical parameters and economic efficiency of post weaning New Zealand White rabbits

2015 ◽  
Vol 46 (1) ◽  
pp. 48
Author(s):  
Maha Salama ◽  
Wael Morsy ◽  
Radi Mohamed ◽  
Mahmoud Eltholth ◽  
Sami ElMidany
Keyword(s):  
New Zealand ◽  
Growth Performance ◽  
Economic Efficiency ◽  
Feed Intake ◽  
Biochemical Parameters ◽  
New Zealand White Rabbits ◽  
Weaning Age

scholarly journals 365 Effects of weaning ages on growth performance of nursery pigs fed diets with increasing lactose levels during at 7 to 11 kg body weight

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 130-130
Author(s):  
Kibeom Jang ◽  
Jerry M Purvis ◽  
S W Kim
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Feed Intake ◽  
Phase 1 ◽  
Ratio Analysis ◽  
Slope Ratio ◽  
Carbohydrate Source ◽  
Nursery Pigs ◽  
Weaning Stress ◽  
Weaning Age

Abstract Lactose is an effective carbohydrate source for nursery pigs. Weaning age could influence needs for lactose. Weaning ages can vary among producers depending on preferred management programs. This study aimed to evaluate optimum levels of lactose for pigs at 7 kg BW weaned at different ages. A total of 1,632 pigs were weaned at d21 (d 21.2 ± 1.3) or d25 (d 24.6 ± 1.1). Pigs had a common diet until they reach 7 kg BW. Within a same weaning age group, when pigs reached 7 kg body weight, they were allotted to 4 dietary treatments with 6, 9, 12, and 15% lactose. Feed intake and BW were measured after 10d feeding when pigs reached 11 kg BW. Data were analyzed using the MIXED procedure of SAS for a slope ratio analysis to test effects of lactose levels on growth performance of pigs influenced by their weaning ages. Pigs weaned at d21 had Phase 1 for 11 days whereas pigs weaned at d 25 had Phase 1 for 2 days to reach 7 kg BW. According to the slope ratio analysis, as increasing lactose intake, ADG of pigs weaned at d21 responded greater (P < 0.05, 68.5%) than growth of pigs weaned at d25. There was no change of slope in feed intake of pigs weaned at d 25 by increasing lactose intake. However, G:F of pigs weaned at d 25 responded greater (P < 0.05, 250%) than G:F of pigs weaned at d21. In conclusion, pigs weaned at d21 grew faster from 7 to 11 kg BW as lactose intake increased compared with pigs weaned at d25 potentially because pigs weaned at d21 had an extended time for adaptation and recovery from weaning stress until they reached 7 kg BW.

scholarly journals Evaluation the effect of placenta on some clinical biochemical parameters during different reproductive periods in New Zealand white female rabbits

2014 ◽  
Vol 13 (1) ◽  
pp. 102
Author(s):  
A. H. J. AL-bdeery
Keyword(s):  
New Zealand ◽  
Biochemical Parameters ◽  
White Female ◽  
Fresh Blood ◽  
New Zealand White Rabbits ◽  
Group A ◽  
Group B ◽  
Animal House ◽  
Final Group ◽  
Significant Increment

The current study was conducted to evaluate the effect of different reproductive periods on some biochemical parameters (ALP, ALT, AST and GGT) in New Zealand white female rabbits. The study was carried out in the animal house of the college of veterinary medicine in Al- Qadisyia university on 21 female New Zealand white rabbits, the animals were divided to 3 groups each group contain 7 rabbits: group A as control non-pregnant rabbits, group B were pregnant rabbits and final group C were lactating female rabbits. Fresh blood samples (4 ml) were collected and centrifuged to obtained serum, then Reflotron apparatus was used for estimation of some enzymes (ALP,ALT, AST and GGT) in all groups of the experiment. The results of group A revealed that the means of (ALP, ALT, AST and GGT) were (44.54, 45.52, 20.74 and 6.08) U/L respectively, while the means of enzyme levels in group B were (105.9, 48.08, 22.68 and 6.8) U/L respectively, and the means of enzyme levels in group C were (49.9, 46.21, 21.84 and 6.72) U/L respectively. The levels of ALP in group B showed a significant increase (P<0.01) as compared with A and C groups, while there no significant increment among sera of three groups levels of (ALT, AST, and GGT).

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