|
|
The relation between type of mating and reproductive performance of rabbit under Egyptian condition
|
|
Abstract: A total number of twenty sexual mature bucks and one hundred and four monoparous does in two consecutive parities of New Zealand White (NZW) rabbits was used in two experiments. The first experiment was aimed to evaluate some reproductive traits of NZW rabbit bucks, during winter and summer seasons. The second experiment was designed to compare fertility traits of NZW rabbit does as affected by natural mating or artificial insemination, during winter and summer seasons.
The results obtained revealed that, diluted semen quality of NZW rabbit bucks in winter was significantly (P<0.05) higher than in summer season. Values of each of mating activity; testicular index; scrotal circumference and blood plasma testosterone of NZW rabbit bucks during winter were significantly (P<0.05) better than those in summer season, while the type of insemination did not record significant on those parameters.
Blood plasma of oestradiol and progesterone; ovulation and conception rates and litter size at birth recorded in winter were significantly (PSfJ.05) better than those in summer season. Blood plasma of oestradiol and progesterone, ovulation and conception rate, an4 litter size at birth were significantly (P<0.05) higher within artificial inseminatidli than in natural mating. Bunny weight at birth was significantly (P<0.05) higher in winter than in summer season, while the effect of type of mating on bunny weight at birth were insignificant. Total milk yield of nursing NZW rabbit does recorded the highest (P<0.05) values during winter season in both does mated naturally or inseminated artificially, while there were no significant differences between total milk yield values due to type of insemination.
Milk composition of nursing NZW rabbit does represented by percentages of each of fat; protein; lactose; ash and digestive matters were significantly (P<0.05) higher in winter and in does inseminated artificially than in summer and in mated naturally one, respectively.
Generally, the study concluded that, inseminating the rabbit does artificially, during summer season resulted fertility traits better than using natural mating.
Key words: AI , mating, , fertility; milk, ovulation, rabbit, season.
|
| Publication year |
2010
|
| Pages |
413-426
|
| Availability location |
معهد بحوث الانتاج الحيوانى-شارع نادى الصيد- الدقى- الجيزة
|
| Availability number |
|
| Organization Name |
|
| City |
اسيوط
|
| serial title |
The 6th International Conference on Rabbit Production in Hot Climate
|
| Author(s) from ARC |
|
| Agris Categories |
Animal physiology - Reproduction
|
AGROVOC
TERMS |
Copulation.
Fertility.
Milk.
Ovulation.
Rabbits.
Reproduction.
Seasons.
|
| Proposed Agrovoc |
AI.;
|
| Publication Type |
Conference/Workshop
|