Effect of strategic supplementary feeding on ewe productivity under range conditions in North Kordofan, Sudan

El-Hag, Faisal M.; Fadlalla, B.; Elmadih, M.A

doi:10.1016/s0921-4488(98)00080-7

Cited by 15 publications

(9 citation statements)

References 6 publications

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“…Flushing significantly affected litter weight at birth and weaning (Sormunen-Cristian and Jauhiainen, 2002). This finding is in agreement with El-Hag et al (1998) who reported higher birth weights in ewes supplemented with flushing ration during breeding time as compared to ewes which were not supplemented. Average weaning weights of lambs at three months of age was found as 16.89 kg.…”

Section: Productive Characteristicssupporting

confidence: 92%

“…These results agree well with those reported by Ribeiro et al (2002) for ewes supplemented with 0.5 kg per animal of ground corn. Similar benefits on litter size and lambing rates after flushing were described by El-Hag et al (1998). In line with these results Marzouk et al (2018) reported that enhancing ration during breeding period is enough to improve the reproductive performance of Ossimi ewes.…”

Section: Reproductive Responsessupporting

confidence: 78%

“…The breeding season of Abou-Delik breed in the South Eastern zone of Egypt coincides with the summer months. Under such circumstances, protein or energy-based supplementary feeding often referred as flushing, around the time of mating improves reproductive performance (Molle et al, 1995 andEl-Hag et al, 1998). Feeding ewes on balanced rations for a short period prior to breeding season has been used to improve fecundity (Leury et al, 1990).…”

Section: Introductionmentioning

confidence: 99%

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Productive Characteristics and Reproductive Responses to Estrus Synchronization and Flushing in Abou-Delik Ewes Grazing in Arid Rangelands in Halaieb - Shalateen - Abouramad Triangle of Egypt.

Farrag¹

2019

jwpr

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There are a few reports about the reproductive aspects or uses of both of flushing and estrus synchronization in Abou-Delik ewes grazing in the South Eastern zone of Egypt. Thirty-three Abou-Delik ewes were allocated to three experimental groups (n = 11 in each) to study the effects of estrus synchronization and flushing on reproductive responses and productive characteristics under arid conditions of South Eastern zone of Egypt. Group one served as control represent the system dominant in the area (without estrus synchronization and flushing ration). Ewes in group two were estrous synchronized with two doses of PGF 2 α, 10 days apart without flushing ration. Ewes in group three were estrous synchronized just like the second group and received 300g of barley grain/head/day as flushing meal for three weeks before the start of breeding season. All ewes were grazed Panicum turgidum (natural vegetation dominant in the area) for eight hours daily. Results showed that, the percentage of estrus exhibition in group three reached 100%, while the lowest percentage was observed in group one (81.82 %). Estrus activity signs in synchronized groups, occurred in 70 and 81.81% during the first 48 h after the second dose of PGF 2 α, for groups two and three respectively, compared to control group (22.22 %). The onset of estrus was earlier in synchronized groups than control group. Duration of estrus did not differ significantly. Estrus intensity in group three was higher (P<0.05) compared to the other groups. Conception and lambing rates were 100% in group three. Third group showed the highest insignificant litter size that was 18% higher than the other groups. The overall mean of birth weight, weaning weight and average daily gain of Abou-Delik lambs were 2.91, 16.89 and 0.116 kg, respectively. There is no significantly effect on concentrations of plasma progesterone among groups. While there were significant differences between sampling periods. In conclusion, under grazing on arid rangelands conditions in the South Eastern zone of Egypt, using flushing and/or estrus synchronization can be useful to improve reproductive and productive characteristics of Abou-Delik sheep.received flushing ration (300g of barley grain/ head/ day) three weeks before introducing rams. Estrus was synchronized with two PGF 2 α, 1 ml intramuscularly injections given 10 days apart. Estrus detection and matingDuring the mating season (July, 2017), ewes were presented to three fertile Abou-Delik rams (1 ram / 11 ewes) and natural mating was allowed. The duration of the mating period was 17 days (equal to one estrus cycle length) in the control group. Synchronized groups (2 and 3) had four days (= 96 h) for mating after second PGF 2 α injection. Paintedbreast fertile rams were introduced to ewes and left with them for estrus detection and natural mating. Rams were allowed to rotate among ewes in different groups (to avoid mixing effect for rams within groups).Estrus detection was checked through the observation of the paint marks on the ewe's rumps. Ewes ...

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Section: Productive Characteristicssupporting

confidence: 92%

Section: Reproductive Responsessupporting

confidence: 78%

Section: Introductionmentioning

confidence: 99%

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Productive Characteristics and Reproductive Responses to Estrus Synchronization and Flushing in Abou-Delik Ewes Grazing in Arid Rangelands in Halaieb - Shalateen - Abouramad Triangle of Egypt.

Farrag¹

2019

jwpr

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“…For the groups of 107 ewes, fl ushing, steaming-up, and fl ushing plus steaming-up, increased monetary returns by US$96, US$627 and US$1058, respectively, compared with the normal farmer practice (Table 4). The added returns relative to added costs were 99%, 118% and 131%, respectively, compared with the 120% and 152% reported by Reese et al (1990) and El-Hag et al (1998), respectively. Partial budget analysis of post-weaning supplementary feeding of ewe lambs (Table 5) showed that the improved practice could increase returns for 50 animals by US$208 over the farmer practice.…”

Section: Resultsmentioning

confidence: 70%

Supplementary feeding to improve Desert sheep productivity under dryland farming

et al. 2006

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“…During this period, the reproductive performance of flocks may be very low in Mediterranean regions because rangelands have dried off potentially limiting both nutrient intake and digestibility of rangeland by ewes (Molle et al, 1997). Under these conditions, protein or energy-based supplementary feeding often referred to as "flushing", around the time of mating improves reproductive performance (Downing et al, 1995;Molle et al, 1995;El-Hag et al, 1998). The role of nutritional flushing should not be ignored, especially where oestrus is included and multiple births are the result.…”

Section: Introductionmentioning

confidence: 99%

Effect of different dietary energy levels on the reproductive performance of Kivircik sheep under a semi-intensive system in the South-Marmara region of Turkey

Koyuncu¹,

Canbolat²

2009

J. Anim. Feed Sci.

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The objective of the study was to determine the effects of four dietary energy levels (L 1 -10.3, L 2 -11.0, L 3 -11.6 and L 4 -12.2 MJ ME per kg DM) on oestrus synchronization and fertility in Kivircik ewes. Eighty Kivircik ewes were randomly allocated in equal numbers to the four dietary energy treatments. The groups were treated with intra vaginal sponges containing 40 mg FGA (fluorogestone acetate) for a period of 14 days and 500 IU pregnant mare serum gonadotropin was injected intramuscularly after sponge withdrawal.The proportion of ewes exhibiting overt oestrus within 96 h after the injection was significantly lower (P<0.05) in the L 1 and L 2 eves (86 and 89 %) than in those on the L 3 (100%) and L 4 (100%) treatments, respectively. Mean litter size and fecundity were higher (P<0.05) in the L 3 (1.95) and L 4 (2.05) compared with the L 1 (1.45 and 1.25) and L 2 (1.63 and 1.55) ewes. It is concluded that shortterm (21 days) in the level of dietary energy supplementation pre-mating can have a beneficial effect on reproductive performance in ewes.

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Effect of strategic supplementary feeding on ewe productivity under range conditions in North Kordofan, Sudan

Cited by 15 publications

References 6 publications

Productive Characteristics and Reproductive Responses to Estrus Synchronization and Flushing in Abou-Delik Ewes Grazing in Arid Rangelands in Halaieb - Shalateen - Abouramad Triangle of Egypt.

Productive Characteristics and Reproductive Responses to Estrus Synchronization and Flushing in Abou-Delik Ewes Grazing in Arid Rangelands in Halaieb - Shalateen - Abouramad Triangle of Egypt.

Supplementary feeding to improve Desert sheep productivity under dryland farming

Effect of different dietary energy levels on the reproductive performance of Kivircik sheep under a semi-intensive system in the South-Marmara region of Turkey

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