eng
The Egyptian Poultry Science Association
Egyptian Poultry Science Journal
1110-5623
2090-0570
2015-06-01
35
2
439
454
10.21608/epsj.2015.5372
5372
Original Article
EFFECT OF FEED RESTRICTION ON PRODUCTIVE PERFORMANCE, CARCASS YIELD, BLOOD PICTURES AND RELATIVE ORGAN WEIGHTS OF GROWING RABBITS
Eighty weaning V-line rabbit’s males aged 33days were used to study the effect of feeding restriction on productive performance of fattening rabbits. Rabbits were individually housed in galvanized wire cages and randomly allotted to four experimental groups (20 males per each), with initial average weight 635±12.25g. First rabbits group fed ad libitum commercial diet and served as control (C), second group (R1)fed restricted diet from the fifth to the sixth weeks of age (50 g /d /rabbit), third group (R2) fed restricted diet from eighth to ninth week of age (90 g/d/ rabbit) and the fourth group (R3) fed restricted diets from fifth to the sixth weeks of age (50 g /d/ rabbit) and from eighth to ninth weeks of age (90 g/d /rabbit) .Rabbits fed ad libitum at all other times of experiment. At the end of the experiment (84 days of age), five rabbits from each group were slaughtered to study carcass quality and some biochemical blood parameters.Results indicated that body weight gain (BWG) for experimental restricted groups R1 and R2 (fed restricted diet for one week, short period) were statistically equal and insignificantly (P ≤ 0.05) different compared with rabbit fed ad libitum (the control group, C). However, restricted group R3 (fed restricted diet during the fifth to the sixth / eighth to ninth weeks (long period) recorded the lowest significant BWG compared with the other experimental groups. Feed intake and daily feed intake for R3 group recorded the lowest significantly amount of feed intake by 16.9 % compared with the control group. Moreover, feed conversion (FCR) and mortality rates were significantly improved for rabbit groups exposed to feed restriction. Carcass and dressing percentages were significantly lowers (P≤0.05) for long period restriction (R3) compared with those for control (C) and for short periods restriction (R1 and R2).
https://epsj.journals.ekb.eg/article_5372_d41d8cd98f00b204e9800998ecf8427e.pdf
growing rabbit
feed restriction
Blood
Growth and Carcass
eng
The Egyptian Poultry Science Association
Egyptian Poultry Science Journal
1110-5623
2090-0570
2015-06-01
35
2
649
649
10.21608/epsj.2015.34556
34556
Original Article
AN EVALUATION OF DRIED POTATO WASTE AS ENERGY SOURCE IN BROILER DIETS
mohamed ibrahim el-malky
m.elmalky3@gmail.com
1
An experiment was conducted to evaluate dried potato waste (PWM) as energy source in broiler diets into diets by its incorporating of two strains of broiler chicks (Arbor Acers and Hubbard F15) instead of Yellow corn. The productive performance, carcass characteristics with some external and internal organs, meat quality and economic efficiency of the experimental diets were observed. A number of 504 unsexed 14-days old broiler chicks, fifty-fifty between Arbor Acers and Hubbard F15, were randomly distributed into six equal experimental groups for each strain, respectively. Each experimental group comprised of 42 chicks which divided into 3 replicates of 14 chicks each. Grower and finisher diets were formulated to investigate the effect of replacing potato waste meal by yellow corn using levels of 0, 25 and 50% with and without commercial enzymes in (2 × 3 × 2) factorial experimental, respectively during growth (15-28) and finishing (29-42) periods. Feed and water were offered ad-libitum during the studied experimental growth periods. From economical point results of view, it is advisable to use PWM up to 25% to replace a part of yellow corn in broiler diets supplemented with commercial enzymes mixture during grower and finisher periods. Such practice helps in improving the profitability without any adverse effects on productive performance, carcass traits of broiler chicks
https://epsj.journals.ekb.eg/article_34556_958c8b5aad08df756f0d73c778154dd7.pdf
Arbor Acers
Hubbard F15
Potato waste meal (PMW)
performance
Economic effecincy