Nutritional evaluation of some new green forages sown under Egyption condition.
Abstract: The experimental work of the present study was conducted through summer of 1997 in commercial farm in Delta Sarkia Governorat.
Two green forages were conducted in this study 1 st was kikuyu grass and 2nd was sweet sorghum. The two forages used in feeding rabbits with different CFM levels. The green forages cultivated in quarter faddan on Dyrb-Negm - Sarkia Governorat.
This study was conducted to investigate the effects of feeding
growing NZW rabbits of different CFM levels with kikuyu grass or sweet sorghum ad-libtum and to decreasing feed cast.
The present study included two parts.
1- The first part .studied:
Effect of feeding New Zealand white (NZW) rabbits on concentrate feed mixture (CFM) ad-lib compared to 60 and 80% of concentrate feed mixture (CFM) with kikuyu grass ad-libtum and showed the effect of rations on growth performance, Digestibility, nutritive value, N-balance,. carcass traits and some blood constituents during the growing period from weaning (5 weeks of age) up to 13 weeks of age. Economic efficiency was calculated.
11- The second part studied:
Effect of feeding New Zealand white (NZW) rabbits on concentrate feed mixture (CFM) ad-lib compared to 60 and 80% of concentrate feed mixture (CFM) with sweet sorghum offered ad libtum and show the effect of ration on growth performance, Digestibility, nutritive value, N-balance, carcass traits, and some blood constituents during the growing period from weaning (5 weeks of. age) up to 13 weeks of age for NZW rabbits. Economic efficiency was calculated.
The results obtained could be summarized as follows:
1-The first part:
The rabbits fed on ration containing 60% CFM and kikuyu grass ad-lib recorded the highest values for live body weight, average daily gain weight. But the rabbit fed 100% concentrate was
the lowest values.
Feed intake in rabbit fed T I (100%) CFM was significant higher (P<0.05) Than rabbit fed T3 (60%) CFM and kikuyu grass ad-lib but insignificant for rabbits fed T2 (80%) CFM and kikuyu grass ad-lib.
Feed conversion was not significant (P<0.05) between all treatments in the whole period while the highest value recorded with rabbit fed T3 (60%) CFM and Kikuyu grass ad-lib and the lowest value with rabbit fed 100% CFM ad-lib.
Feed intake as Kg W0.75 were higher (P<0.05) for rabbits feed TI and T2 than the rabbit fed T3. The OM, CP and NFE digestibility were not significant for rabbit fed different treatments. The OM was significantly (P<0.05) higher of rabbits fed T3 than rabbit fed T I, but insignificantly for rabbit fed T2.
The CF was significantly higher (P<0.05) for rabbit fed T3 than rabbit fed TI and T2.
The TDN was the higher (P<0.05) for rabbit fed T3"and T2 than for rabbit fed T I
The highest value for DCP was recorded with rabbits fed T3 (60%) CFM + kikuyu grass ad-lib and the lowest value for rabbit
fed T I.
The results showed that the N-balance for rabbit fed TI was higher than (P<0.05) rabbit fed T2 and T3, but the N-absorbed for rabbit fed T1 and T3 significantly higher (P<0.05) than TI.
The results indicated that, no significant differences for carcass traits of rabbit fed 100 and 80, 60 CFM whit kikuyu grass
ad-lib.
The economic efficiency of rabbit fed ration containing T3 (60% CFM + kikuyu grass ad-lib) was the highest value but T I
(100% CFM) was the lowest ones.
11- The second part.
The rabbits fed on ration 3. (60% CFM + sweet sorghum adlib) recorded the highest values for live body weight, average daily gain weight, but the lowest values showed for rabbits fed on ration I. (100% CFM ad-lib).
Feed intake of rabbit fed T I (I00% CFM) was higher than for 60, 80% CFM and sweet sorghum ad-lib.
Feed conversion was not significant (P<0.05) between an the treatments. while the highest value recorded with rabbits fed 600/0 CFM with sweet sorghum ad-lib and the lowest values showed with rabbits fed 1000/0 CFM ad-lib.
The feed intake / kg0.75 recorded the higher significantly for rabbit fed (100% CFM) and 80% CFM + tweet sorghum ad-lib than rabbit fed TI (60%) CFM + sweet sorghum ad-lib.
The DM. OM. CP, and NFE digestibility were not significant for rabbits fed different treatments.
The CF digestibility was significant (p<0.05) higher for rabbit fed T3 (60% CFM and sweet sorghum ad-lib) than T2 (80% CFM + sweet sorghum ad-lib) and T I (100 % CFM ad-lib).
The highest value for DCP was recorded for rabbits fed (100% CFM ad-lib) and the lowest values for rabbits fed (60% CFM + sweet sorghum ad-lib) the differences were not significant.
The TDN was the higher value for rabbit fed (80% CFM + sweet sorghum ad-lib) than fed (100% CFM ad-lib) and (60% CFM+ sweet sorghum ad-lib). The dit1er-ence were significant (P<0.05).
The results showed that, rabbits fed T 1 (100% CFM ad-lib) was higher for N-absorbed and N-balance than for (60, 80% CFM + sweet sorghum ad-lib) the differences were significantly (P<0.05) higher.
The results indicated that, the differences in dressing, carcass percentage, giblets, kidney weight, heart weight, trunk percentage and hind limbs percentage were not significant for rabbit fed ration containing (100 and 80, 60% CFM + sweet sorghum ad-lib), The economic efficiency of rabbit fed ration containing T3 (60% CFM + sweet sorghum ad-lib) recorded the highest values and the lowest value with T I (100% CFM ad-lib).
From the previous results it could be concluded that, feeding rabbits on a part of concentrates with green forage (kikuyu grass and sweet sorghum ad-lib) improved growth performance as live body weight, daily body gain and teed conversion. Also improved digestibilities of various nutrients and nutritive values, especially (80 and 60% CFM + green forage ad-lib) and economic efficiency.
Publication year 1998
Availability location مكتبة معهد بحوث الانتاج الحيوانى- شارع نادى الصيد- الدقى - الجيزة
Availability number 626
Organization Name
Country Egypt
Department Animal Nutrition Research Departement
Author(s) from ARC
Agris Categories Animal feeding
AGROVOC
TERMS		 Digestibility. Economic analysis. Feed crops. Rabbits.
Publication Type Master Thesis
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