000			03937cab a2200337Ia 45 0
001			u195699
003			SIRSI
008			111016s2005 ua ss b eng d
040			_aEAL
041			_aeng _bara
090			_aART MUJAS V30 No12 A 17
100	1		_aFarid, M. F. A.
240	1	0	_aMansoura University journal of agricultural sciences, 2005 v. 30 (12) _npart A _h[electronic resource].
245	1	0	_aFeeding management and the performance of sheep in southern Sinai _h[electronic resource]: _b1. diet selection and the voluntary food intake of ewes.
246	1	5	_aتأثير الرعاية الغذائية علي إنتاج الأغنام في جنوب سيناء:‪ _bإختيار الغذاء و كمية الغذاء المأكول في النعاج.‪
300			_ap.7437-7456.
504			_aIncludes references.
520			_aAn experiment was carried out to quantitatively characterize production and reproduction traits of local sheep in southern Sinai and to standardize the nutritional management of sheep flocks. Since the nutritional requirements of the local breeds are not known, it was empirical to study diet selection and voluntary food intake and its regulation during different stages of the production cycle. A total of 85 ewes in four groups were used. A control group was fed according to the M NRC standards. Control rations were balanced using the same ingredients offered to the experimental groups. Ewes in the three experimental groups, group-housed in shaded pens, were offered one of three basal roughages; berseem hay, one-third berseem hay and rice straw, and rice straw with added molasses-urea feed mixture. Roughages were made available ad lib and comprised the sole ration during breeding and early pregnancy. A flushing concentrate was fed to all ewes including the controls before and during breeding at the rate of 200 g/daylewe. As of the start of the late pregnancy period and up to the weaning of the offspring, the three experimental groups were offered, in separate feeders, ground corn grains and cottonseed meal to allow for free-choice intake. Group food intakes were recorded daily and live body weights biweekly. The hay-fed ewes were able to select diets that satisfied their energy and protein requirements during the different stages of the production cycle. The physical characteristics of the selected diets in terms of roughage and crude fibers percentages in the total DMI and the proportion of dietary protein that is potentially degradable in the rumen were practically the optimum. It appears that in those ewes voluntary food intake regulation was predominantly under the control of physiological factors to satisfy energy requirements. The physical limitation of the fill capacity was not a factor. The straw-fed groups, on the other hand, failed to control their intake as per their physiological needs. Their voluntary food intake was apparently under the control of physical rather than physiological factors, Le. the limited fill capacity and the slow rates of degradation and passage of ingested material. The massive increase of Energy requirements during early lactation obliged the ewes to consume large quantities of corn grains. Consequently, their roughage and crude fibers intake was below physiological optimum and the rumen environment and microbial population as well as the host animal might have been adversely affected.
546			_aSummary in Arabic.
650		0	_aSheep _xGrowth.
650		0	_aSheep _xFeeding and feeds.
650		0	_aSheep _xFeed utilization efficiency.
650		3	_afeed composition
650		0	_afeed intake
700	1		_aKhamis, H. S.
700	1		_aEid, E. Y. A.
700	1		_aHelsl, A.
773	0		_tMansoura University Journal of Agricultural Sciences. _g2005.v.30(12)part-A _x1110-0346 _7nnas _wu182197
856	4	0	_uhttp://nile.enal.sci.eg/EALE/2005/MUJAS/3005/12/A/7437.pdf _zFull Text Article.
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