A note on post maturity in purebred commercial rabbits in Egyptian conditions

El-Darawany, A. A.

doi:10.1017/s1357729800042624

Cited by 2 publications

(4 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(1999) and those on E2 level at day 5 before delivery were similar to those of Kudari (1992) in sheep. Gestation length results were similar to those of Trimpleton (1939), Adams (1972), Jainudeen and Hafez (1987) and El‐Darawany (1994) in rabbits. The difference in gestation length in does could be because of the difference in endocrine control of parturition (Abdel‐Hafez 2000).…”

Section: Discussionsupporting

confidence: 85%

“…The gestation pattern in Nubian crossbred goats was similar to that observed in rabbits by Broeck and Lainpo (1975), Jainudeen and Hafez (1987), El‐Darawany (1994, 1998) and Farghaly (1996). The pre‐ and post‐term litters resulted in earlier and later delivery, respectively, compared with full‐term deliveries.…”

Section: Discussionsupporting

confidence: 83%

“…Broeck and Lainpo (1975), Farghaly (1996) and El‐Darawany (1998) claimed that the incidence of pre‐term births increased with larger litter sizes at birth. El‐Darawany (1994) reported that a high incidence of post‐term births was associated with small litter sizes. Pre‐term delivery might be caused by difficulty in uterine adaptation caused by immaturity of organs and instability in the different homeostatic control (Guyton 1981).…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Mucus and hormonal traits in three gestation patterns (pre‐, full‐ and post‐term) of Egyptian Nubian (Zaraibi) crossbred doe goats

El-Darawany

Marai

Elwan

et al. 2005

Animal Science Journal

View full text Add to dashboard Cite

In the present study, 48 crossbred does (Nubian × Baladi) were used to investigate physiological (mucus and hormonal) traits as affected by gestation pattern (pre‐, full‐ and post‐term parturitions). The incidence of full‐term (does with a gestation length of 146–152 days) was the highest (54.5%), followed by pre‐term (does with a gestation length of 140–145 days; 36.9%) and post‐term (does with a gestation length of 153 days; 8.9%), respectively. Prediction of gestation pattern by using some body measurements was also studied. Cervical mucus samples were collected during estrus to determine spinnbarkeit (i.e. strength, viscosity or stretchability) and pH values of the mucus. Mucus was also collected pre‐parturition daily from day 140 of gestation until delivery, to evaluate the ferning arborization. Blood samples were collected on the day before mating (0 time), 1 (at mating), 30, 60, 90 and 145 days after mating. The results showed that spinnbarkeit and pH in cervical mucus at estrus, serum estradiol‐17α (E2) at day 5 before delivery, and progesterone (P4) levels differed insignificantly according to gestation pattern. The fern degree between day 140 of gestation and day of delivery was the highest in pre‐term does, while it was the lowest in post‐ and full‐term does. The gestation length was the highest in post‐term does (157.5 days), and the lowest in pre‐term does (141.5 days). During winter, the incidence of pre‐term deliveries was the highest (54.5%), but in spring, full‐term deliveries were the most common (58.3%). Most of the traits studied were insignificantly affected by season of birth. Post‐term delivery can be estimated by doe weight and wither height, while full‐term delivery can be anticipated using by hip height and abdomen girth. Pre‐term does can be detected by cervical mucus fern between day 140 of gestation and day of delivery. Post‐term does can be defined by doe weight and wither height, while full‐term deliveries can be defined by hip height and abdomen girth, during pregnancy.

show abstract

Section: Discussionsupporting

confidence: 85%

Section: Discussionsupporting

confidence: 83%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Mucus and hormonal traits in three gestation patterns (pre‐, full‐ and post‐term) of Egyptian Nubian (Zaraibi) crossbred doe goats

El-Darawany

Marai

Elwan

et al. 2005

Animal Science Journal

View full text Add to dashboard Cite

show abstract

“…Premature pups are a live born litter of low birth weight. Also the weight or size of the foetuses has a large effect on the duration of pregnancy in rabbits (El-Darawany, 1994). The decrease in gestation length shows a significant correlation with large litter size in rabbits (Rodriguez et al, 1985).…”

Section: Introductionmentioning

confidence: 99%

Premature parturition in commercial strains of rabbits in Egypt

El-Darawany

1998

Anim. Sci.

Self Cite

View full text Add to dashboard Cite

This study was carried out on Bauscat (B), New Zealand (N), Californian (C), N XC (NC) and B XNC (BNC) rabbits. Overall reproductive performance for does with premature parturition (pre-term) of the five breeds was determined and compared with that of does delivering at the normal time (full-term). Full-term does showed a reproductive performance superior to that of pre-term does in all five breeds with larger litter size at weaning, more pups weaned per doe and a lower proportion of stillbirths. Pre-term B, N and BNC does had a larger number of pups weaned than pre-term C and NC does (P < 0-01). There was a high incidence of pup mortality in premature litters, and the main causes of this high mortality were respiratory distress syndrome, crushing of the skull and starvation and chilling. The mean serum oestradiol 27-(3 concentrations and degrees of cervical mucous ferning in pre-term B does were higher than in full-term does (P < 0-01) but the mean serum progesterone concentrations in pre-term B does were lower than in full-term does during the gestation period (P < 0-01). Treatment with either dexamethasone or progestin reduced pup mortality in pre-term does and the birth-to-remating interval was shorter in pre-term does treated with dexamethasone (P < 0-01) but longer when treated with progestin (P < 0-01).

show abstract

A note on post maturity in purebred commercial rabbits in Egyptian conditions

Cited by 2 publications

References 1 publication

Mucus and hormonal traits in three gestation patterns (pre‐, full‐ and post‐term) of Egyptian Nubian (Zaraibi) crossbred doe goats

Mucus and hormonal traits in three gestation patterns (pre‐, full‐ and post‐term) of Egyptian Nubian (Zaraibi) crossbred doe goats

Premature parturition in commercial strains of rabbits in Egypt

Contact Info

Product

Resources

About