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EFFICACY OF CONTROLLED INTERNAL DRUG RELEASING (CIDR) DEVICE ON SYNCHRONIZATION Group 1 (n=24) served as controls & received no treatment. In group 2 (n=24) The ewes were inserted with the CIDR for 12 days and 400 IU of PMSG was injected intramuscularly at the time of removal of device. In group 3 (n=24) the ewes were inserted with CIDR for 12 days and 600 IU of PMSG was administered intramuscularly at the time of removal of CIDR. In group 4 (n=24) The ewes were treated with CIDR for 12 days, 400 IU of PMSG was injected intramuscularly at the time of removal of vaginal sponges and injected 200 IU of hCG intramuscularly at the time of mating. In group 5 24 ewes were inserted with CIDR for 12 days and 600 IU of PMSG at the time of removal of sponges and 200 IU of hCG at the time of mating was given. Ewes of all groups were monitored for the symptoms of estrus by using a teaser ram daily 4 times with an interval of 6 hours for the duration of 30 minutes for five days after withdrawal of intravaginal CIDR progestagen devices. The ewes were subjected to pregnancy diagnosis by transabdominal approach using real time B-mode ultrasonography (5 to 7.5 MHz). The efficacy of treatment was measured in terms of estrus response, pregnancy, lambing, litter size and twinning rates. RESULTS AND DISCUSSION Estrus Response The percentage of estrus response in ewes synchronized with CIDR in breeding Vs. non breeding seasons with overall mean in different therapeutic Groups was presented in Table 1. PMSG supplementation along with CIDR, the estrus response rates were in line with the studies of Sirjani et al. (2011) and Moakhar et al. (2012). But the researchers used variable doses of PMSG, progesterone and different kinds of progesterone preparations in CIDR. Higher estrus response than the present study was recorded by Ungerfeld and Rubianes (2002). But Gungor et al. (2007) and Moeini et al. (2007) observed lower estrus response than the present study. Variation in estrus response rate might be differences in season, breed of sheep (Santos et al., 2011), type of progesterone and device (Santos et al., 2011), use of PMSG, time of PMSG injection (Safdarian et al., 2006), presence of ram in the herd (Moeini et al., 2007), body condition and management system (Yadi et al., 2011), nutritional condition, latitude (Santos et al., 2011) and length of progesterone treatment (Ustuner et al., 2007). PMSG was reported to increase synchrony of estrus and ovulation with more predictability and precise (Cline et al., 2001) in breeding and non breeding seasons (Zonturlu et al., 2008). Estrus rates were greater in ewes treated with hCG might be due to stimulation of ovarian function in this study (Khan et al., 2009). Time taken for induction of estrus The time taken for expressing estrus after removal of CIDR in breeding Vs. non breeding season with overall mean was 35.56±2.36 Vs. 38.53±3.21 h with 37.05±1.68 h in Group II; 34.78±2.32 Vs. 36.82±2.14 h with 35.80±1.73 h in Group III; 35.63±2.84 Vs. 38.77±2.86 h with 37.20±1.72 h in Group IV and 34.80±2.21 Vs. 36.27±1.85 h with 35.54±1.75 h in Group V Groups, respectively. The present findings were in accordance with the studies of Zonturlu et al. (2008) and Moakhar et al. (2012). Contrary to this, shorter time for exhibition of estrus than the present study was reported by Hashemi et al. (2006). Longer period was taken for exhibition of estrus than the present study was observed by Sirjani et al. (2011). Variation in time taken for expression of estrus might be attributed to the exposure to ram as well as day of insertion of vaginal devices in estrous cycle. The time taken for exhibition of estrus also depends on rate of absorption and metabolization of each progestagen device as reported by Romano (2004). Duration of Estrus The duration of estrus in ewes synchronized with CIDR in breeding Vs. non breeding season with overall mean was 42.68±4.80 Vs. 33.36 ±3.10 h with 38.02±2.41 h in Group II; 42.95±3.14 Vs. 36.45±2.08 h with 39.70±2.48 h in Group III; 42.86±4.34 Vs. 33.56±3.64 h with 38.21±2.38 h in Group IV and 43.40±4.44 Vs. 36.81±3.95 h with 79
MOHAN et al 40.11±2.52 h in Group V, respectively. Whereas the duration of estrus in breeding Vs. non breeding season with overall mean in untreated control was 26.28±2.48 Vs. 24.87±2.23 h with 25.57±2.36 h. The duration of estrus was significantly (P
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CONTENTS PART I : PLANT SCIENCE Ads
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J.Res. ANGRAU 41(2) 1-10, 2013 ADSO
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ADSORPTION DESORPTION OF PENDIMETHA
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J.Res. ANGRAU 41(2) 11-15, 2013 STU
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STUDIES ON THE EFFECT OF PLANT GROW
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STUDIES ON THE EFFECT OF PLANT GROW
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PERFORMANCE OF DRUM SEEDER IN DIREC
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PERFORMANCE OF DRUM SEEDER IN DIREC
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J.Res. ANGRAU 41(2) 21-25, 2013 EFF
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EFFECT OF GRADED LEVELS AND TIME OF
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EFFECT OF GRADED LEVELS AND TIME OF
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ASSESSMENT OF GENETIC DIVERSITY IN
Page 32 and 33: ASSESSMENT OF GENETIC DIVERSITY IN
Page 34 and 35: ASSESSMENT OF GENETIC DIVERSITY IN
Page 36 and 37: J.Res. ANGRAU 41(2) 33-41, 2013 EST
Page 38 and 39: ESTIMATION OF HETEROSIS FOR YIELD A
Page 46 and 47: INTEGRATED EFFECT OF ORGANIC MANURE
Page 48 and 49: INTEGRATED EFFECT OF ORGANIC MANURE
Page 50 and 51: SCREENING OF LOCAL RHIZOBIAL ISOLAT
Page 56 and 57: CHARACTERIZATION AND CLASSIFICATION
Page 62 and 63: J.Res. ANGRAU 41(2) 59-67, 2013 IDE
Page 64 and 65: IDENTIFICATION OF SUPERIOR PARENTS
Page 72 and 73: EFFECT OF FRONT LINE DEMONSTRATIONS
Page 78 and 79: EFFECT OF FEEDING COMPLETE FEED CON
Page 80 and 81: EFFECT OF FEEDING COMPLETE FEED CON
Page 84 and 85: EFFICACY OF CONTROLLED INTERNAL DRU
Page 90 and 91: EFFECT OF NSP ENZYMES AND PREBIOTIC
Page 100 and 101: HAEMATOLOGICAL AND BIOCHEMICAL PROF
Page 102 and 103: HAEMATOLOGICAL AND BIOCHEMICAL PROF
Page 104 and 105: INDIAN BREAD MAKING TOOLS - CONSUME
Page 110 and 111: Research Notes J.Res. ANGRAU 41(2)
Page 112 and 113: CROP COEFFICIENTS FOR DRIP AND CHEC
Page 116 and 117: STUDY ON THE EFFECT OF IRRADIATION
Page 120 and 121: EVALUATION OF DEFOLIANTS ON MUNGBEA
Page 122 and 123: YIELD, NUTRIENT UPTAKE AND ECONOMIC
Page 124 and 125: YIELD, NUTRIENT UPTAKE AND ECONOMIC
Page 128 and 129: NANO FOOD COLOURS FOR PRODUCT FORMU
Page 130 and 131: EFFECT OF ORGANIC FERTILISERS ON GR
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EFFECT OF ORGANIC FERTILISERS ON GR
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Research Notes J.Res. ANGRAU 41(2)
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NUTRIENT UPTAKE OF MICROSPRINKLER I
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EFFECT OF SYNERGIST, TRIPHENYL PHOS
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EFFECT OF SYNERGIST, TRIPHENYL PHOS
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EFFECT OF HARVESTING STAGES AND DRY
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RESPONSE OF AEROBIC RICE TO IRRIGAT
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RESPONSE OF AEROBIC RICE TO IRRIGAT
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DRIP IRRIGATION SCHEDULE FOR CASTOR
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CHARACTER ASSOCIATION AND PATH COEF
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CHARACTER ASSOCIATION AND PATH COEF
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Statement about ownership and other
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GUIDELINES FOR THE PREPARATION OF M
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ESSENTIAL REQUIREMENTS FOR CONSIDER
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