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العنوان
REPRODUCTIVE EFFICIENCY OF SHAMI GOATS IN SALT AFFECTED LANDS IN SOUTH SINAI\
الناشر
Ain Shams university.
المؤلف
EL-HAWY,AHMED SOBHY ALI ALI.
هيئة الاعداد
مشرف / عصمت بكرى عبد الله
مشرف / احمد محمد الشربينى
مشرف / حمدى عبد العزيز سالم جاويش
باحث / احمد صبحى على على
الموضوع
REPRODUCTIVE EFFICIENCY. SHAMI GOATS. SOUTH SINAI. REPRODUCTIVE EFFICIENCY. SHAMI GOATS. SOUTH SINAI.
تاريخ النشر
2013
عدد الصفحات
p.:146
اللغة
الإنجليزية
الدرجة
الدكتوراه
التخصص
علم الحيوان والطب البيطري
تاريخ الإجازة
1/1/2013
مكان الإجازة
جامعة عين شمس - كلية الزراعة - Animal Production
الفهرس
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Abstract

The present study was carried out during the period -#102;-#114;-#111;-#109; August 2009 to July 2010 at Ras sudr Research Station in South Sinai (200 km east of Cairo), that belongs to the Desert Research Center, Ministry of Agriculture, through ICBA-DRC bilateral project. br 48 Shami goats (2.0-2.5 years old with average body weight of 27.8 ± 3.22 kg) were divided randomly into equal 4 groups (12 of each). Groups 1 and 2 were received berseem hay while groups 3 and 4 were received salt-tolerant plants (alfalfa). Animals received concentrate feed mixture to cover 125% of their maintenance requirements of energy. Groups 1 and 3 were drinking fresh tap water (247 ppm, TDS) while the other two groups (2 and 4) were drinking saline water (6000 ppm, TDS). br This work was conducted to determine the effect of salinity (salt-tolerant alfalfa and drinking saline water) on hormonal profiles and reproductive performance as well as productive efficiency of Shami goats over full reproductive cycle. Body weight, reproductive and productive traits, in addition to hemo-biochemical parameters for different experimental groups were recorded during different physiological stages. br The main results could be summarized as follows: br 1.Total dissolved salts and other minerals (Ca, P, Na, K and Cl) increased in saline water compared to fresh water (5980 and 274 ppm, TDS for saline and fresh water, respectively). br 2.Results of chemical composition revealed that alfalfa has higher percentage of nitrogen free extract (average 50.49 vs. 41.3%), ether extract (average 2.51 vs. 1.38%) and crude protein (average 18.82 vs. 14.5%) while, decreased in crude fibers (average 20.63 vs. 28.20%) and ash content (average 7.55 vs. 11.61%). br 3.The minerals concentrations increased in alfalfa compared to berseem hay, whereas Na (1.4 vs. 0.7%), K (1.72 vs. 1.24%), Ca (0.962 vs. 0.682%) and P (0.666 vs. 0.233%). br 4.Conception rate insignificantly increased in alfalfa groups as compared to berseem hay groups. G3 and G4 recorded 90 and 80% while, G2 and G1 recorded 90 and 75% respectively. br 5.Group 3 recorded high percentage of kidding rate (91.75%) then G2 and G4 (83.3%) while, G1 recorded 75% br 6.Estradiol-17β (E2) and progesterone (P4) profiles during estrous cycle were found to follow the normal pattern reported during follicular and luteal phases in the cycle with insignificant differences between alfalfa groups and berseem hay groups. br 7.During pregnancy, E2 levels did not differ significantly among the four experimental groups and maintained unchanged till 145 days of gestation, then started to increase sharply till parturition. While, P4 levels decreased significantly, reaching their lowest values on the day of mating and increased with the progress of pregnancy exhibiting two peaks at days 17 and 130 of pregnancy and gradually declined thereafter till parturition. br 8.Results indicated that feeding had no significant on milk yield during lactation stages, while; drinking water had a negative significant effect on milk yield. br 9.Mid lactation (week 6 and 8) recorded high milk production compared to early (week 2 and 4) and late lactation (week 10 and 12). br 10.Chemical composition of milk samples showed that insignificant differences in all parameters except lactose which increased significantly in berseem hay groups than alfalfa groups. br 11.During early pregnancy, total dry matter intake (TDMI) (kg/h/d) was found to be 1.13, 1.11, 1.15 and 1.16 for G1, G2, G3 and G4, respectively representing 3.2% of their respective body weights. The corresponding TDMI values during late gestation were 1.5, 1.24, 1.32 and 1.33 kg/d/d, respectively br 12.Total DMI tended to decrease during mid-lactation (8th week postpartum) then increased again during late lactation stage (12th week postpartum) in all doe groups reflecting the hyper-metabolic activity during such period. br 13.does of the different experimental groups gained weight during the gestation period (5 months) being 6.64, 8.2, 4.11 and 5.14 kg for G1, G2, G3 and G4, respectively, indicating better nutritional management prevailed during different physiological stages. br 14.Kids birth weight of the different doe groups was found to be 2.43, 2.70, 2.78 and 2.95 kg with differences being insignificant, while weaning weight was significantly (P-lt;0.05) different in fresh water groups with values of 12.41, 10.60, 10.90 and 10.72 kg for G1, G2, G3 and G4, respectively. br 15.Tri-iodothyronine (T3) concentration recorded insignificant increase in berseem hay groups (G1 and G2) compared to alfalfa groups(G3 and G4), while Thyroxin concentration recorded significant increase in G3 compared to other groups. br 16.Aldosterone concentrations of the does fed salt-tolerant alfalfa were insignificantly lower than that of does fed berseem hay during pregnancy period (27.02±1.5 vs. 31.38±2.3 pg/ml). br 17.Blood urea nitrogen, creatinine and AST concentrations were significantly increased in saline water groups, while ALT insignificantly increased in salt-tolerant alfalfa groups. br 18.Hemoglobin concentration and packed cell volume significant increased in saline water groups compared to tap water groups. br 19.Red blood corpuscles count recorded insignificant increase in alfalfa groups (G3 and G4) compared to berseem hay groups (G1 and G2), while white blood corpuscles count recorded significant increase in tap water groups (G1and G3) compared to saline water groups (G2 and G4). br It could be concluded that utilization of salt-tolerant plants as animal feeds in salt affected lands could be an appropriate option for alleviating the desertification problems and providing alternative good feed resources particularly in summer and autumn seasons when the other conventional forage resources are shortage. Also, we can use saline water (6000 ppm TDS) as a source of drinking water without any adverse effects on reproductive and productive performance of Shami goats.