EFFECT OF SUBSTITUTION  DIFFERENT LEVELS OF BEKIA HAY IN RATIONS ON THE PRODUCTIVE PERFORMANCE AND THE MILK COMPOSITION OF AWASSI EWES

Gargajah, G.K.K.; Abo, N.Y.; Abdullah, G.I.

	EFFECT OF SUBSTITUTION DIFFERENT LEVELS OF BEKIA HAY IN RATIONS ON THE PRODUCTIVE PERFORMANCE AND THE MILK COMPOSITION OF AWASSI EWES
IRAQ JOURNAL OF AGRICULTURE
Article 1, Volume 2, Issue 16, 2011, Pages 0-0
Authors
G.K.K. Gargajah; N.Y. Abo; G.I. Abdullah
Abstract
This study was conducted at AL-Rashidia research center, Nenavah-Iraq to investigate the effect of substitution different levels of bekia (Vetch) hay in concentrate diets on performance of awassi ewes and embryonic growth rate during the late pregnancy and lactation periods and the trial Awassi lasted for 135 days. Forty pregnant Awassi ewes were randomly divided into four groups. Animals of first treatment were fed the control ration 0% bekia hay, The other three treatments were fed bekia hay which replaced the concentrate of the ration at 10, 20 and 30% levels respectively. The diets were formulated to the iso caloric- iso nitrogenous. Results of the experiment were as follows: The ration was not affected changes of ewes weights from begin of experiment to the end of lactation. Mean of milk production during 12 weeks was 90,99 kg, with average daily milk production of 1.083 kg in all treatment. The ration was not affected milk production period. However, the ewes received diet contented 30% bekia hay produced the highest milk yield (104,82 kg).It was concluded that as level of bekia increases in the diet a concomitant increase in milk yield observed. The percentage at milk fat5.31% in group of ewes fed 10% bekia hay was significantly affected (P<0.05) comparison with percentage in milk fat 3,02% and 3.87% with group ewes which fed (0 and 20% bekia hay) respectively. And also percentage at milk protein5.23 in group of ewes fed 10% bekia hay was significantly affected (P<0.05) comparison with percentage in protein 4.024% and 4.51 which fed (0 and 20%( bekia hay respectively. The ration was not affected percentage in milk lactose. The ration was not affected of lambs birth weight in all treatment, but the 2nd ration which group of ewes fed 10 % bekia hay was significantly affected (P<0.05) the lambs growth rate25.9 kg and at weaning weight30.90 kg comparison with lambs growth rate 21.45kg and at weaning 25.30kg in the ewes group which fed 20 %bekia hay. Also the 2nd ration which group of ewes fed 10% bekia hay was obvious, mathematically in lambs growth rate and weaning weight compared with other treatment groups.

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