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Effect of replacing linseed meal for soybean meal on performance of growing rabbits
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Abstract: Three experiments were carried out at the Poultry Research Farm belonging to Department of Poultry Production, Kafr EL-Sheikh Faculty of Agriculture, Tanta University during the period from January to May, 2000.
Experiment I:
One hundred and fifty New Zealand White rabbits, 5 weeks of age with an average weight 630 gm, were obtained at random from the New Zealand White flock of the Faculty Farm to be used in the first experiment. Rabbits were used to evaluate to which extent linseed meal can replace soybean meal in growing rabbits diets. Animals were distributed into five groups of 30 rabbits each. The first diet was used as control, while experimental diets 2, 3, 4 and 5 contained 7, 14, 21 and 28% linseed meal (LM) respectively. Experiments lasted for 8 weeks. Parameters studied included growth performance, some blood constituents, carcass traits, chemical composition of meat and economical efficiency.
Experiment II:
A digestibility trial was performed on fifty-six male New Zealand White rabbits at least of three months old and similar in body weight to determine the apparent digestibility of raw materials (LM) and (SB) and all nutrients of the experimental diets. Experiments lasted for 4 weeks.
Experiment III:
A coprophagy trial was performed on forty male New Zealand White rabbits at least of four months old weighting 2.1-2.6 kg to estimate the excretion and chemical composition of soft faeces. Experiment lasted for 2 weeks.
Results obtained could be summarized as follows:
(1) The comparison between chemical composition of linseed meal (LM) and soybean meal (8M) showed that LM was higher in DM, OM, EE, CF, NFE, Ca, P and methionine than 8M, but it was lower in CP and lysine.
(2) Live body weight, daily weight gain and dry matter intake were reduced significantly by increasing the level of LM.
(3) Highest feed conversion was observed for rabbits fed 7% L8M level, while the poorest one was observed for those fed 21 % LM level.
(4) The mortality rate was improved significantly with increasing LM level in experimental diets.
(5) Digestibility coefficients of GE, EE and CF increased significantly as LM level in diets increased, but digestibility of DM, OM, CP and NFE decreased significantly.
(6)Increasing the level of LM led to significant increase the daily soft faeces excretion (11.2 g DM/d).
(7) The highest contribution of soft faeces to total crude protein intake was obtained with 28% LM level.
(8)Increasing the LM level in the experimental diets had negatively affected carcass traits, but positively affected abdominal fat and caecum content.
(9) DM, OM, EE of meat increased significantly by increasing the level of LM, but ash and CP decreased significantly.
(10) A significant depression (P<0.00 1) was observed in plasma total protein and glucose, while plasma cholesterol and triglycerides significantly increased by increasing level of linseed meal in diets.
(11) Highest economical efficiency (%) was observed for rabbits fed 28%
LM level compared with other levels.
Thus it could be possible to include up to 28% of linseed meal in growing rabbits diets as substitute for soybean meal without any problems. More research is needed to evaluate the use of linseed meal in adult rabbits diets.
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| Publication year |
2001
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| Pages |
71 PP.
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| Availability location |
مكتبة معهد بحوث الانتاج الحيوانى- شارع نادى الصيد- الدقى - الجيزة
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| Availability number |
989
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| Organization Name |
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| Country |
Egypt
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| Author(s) from ARC |
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| Agris Categories |
Animal feeding
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AGROVOC
TERMS |
Growth period.
Performance testing.
Rabbits.
Soybean meal.
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| Proposed Agrovoc |
linseed meal;
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| Publication Type |
Master Thesis
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