Researches regarding reproductive parameters in teleorman’s blackhead sheep
Journal Title: Scientific Journal of Animal Science - Year 2013, Vol 2, Issue 10
Abstract
This study is an important part of an ample research regarding the opportunity for establishment of regional centers for artificial insemination, in order to improve milk production. Is very important to know the current level of reproductive performance of population, in order to find the best ways and means for improving reproductive activity. In this case, we analyzed fertility, natality, prolificity, survival, and the percentage of abortions and embryonic mortality. Results obtained reveals a rate of fertility at 99.20% in adult sheeps and at 86.89% for young females (born in January, mated in August - October). Natality, in analyzed flock was at 98.59% for adult sheeps, 98.11% for young females. Prolificity was 130.14% for adults and 121.15% for young females. Survival was better for lambs foaled from adults (94.52%), in comparation with young females (92.06%). Abortions and emrionary mortality was at 1.41% for adults and 1.89% for young ewes. Analyzing obtained datas it is obvious that using of young females for reproduction at 8 - 10 months old involve obtaining of a smaller reproductive indexes. We recommend, in case of use of females for reproduction at 8 - 10 months old, an adequate feeding technique, in order to obtain, in young ewes, a body weight of at least 50% from adult ewes body weight. Through importance of intensification of reproductive activity, it’s obvious that use of young females from young ages it is a good choice only when body weight is at least at 50 kg ( about 70% from adult body weight).
Authors and Affiliations
F. Andi*| Faculty of Animal Sciences, University of Agronomic Sciences and Veterinary Medicine, Bucharest, 011464, Marasti Boulevard., no. 57, Romania., C. Ion| Faculty of Animal Sciences, University of Agronomic Sciences and Veterinary Medicine, Bucharest, 011464, Marasti Boulevard., no. 57, Romania.
Keywords
Related Articles
- EP ID EP659
- DOI 10.14196/sjas.v2i10.980
- Views 446
- Downloads 25
Growth response and haematological parameters of juvenile rabbits fed concentrate diets supplemented with varying levels
Effects of feeding growing rabbit with varying dietary levels of concentrate diet supplemented with graded Tridax procumbens was studied in a feeding trial with respect to weight changes, haematological and serological...
Investigation on optimal initial live weight and sex effect for fattening in fat-tailed Lori-Bakhtiari sheep in intensiv
To identification of optimum initial live weight (ILW) and sex effect for fattening of Iranian Lori-Bakhtiari breed, a total of 224 growing lambs were allocated in two separate experiments. The first experiment (n = 14...
A survey on osmoregulatory potential of Bream, Abramis brama (Berg, 1949) fry for restocking management programs
Bream (Abramis brama, Berg, 1949; Family: Cyprinidae) is commercially valuable fish in the Caspian Sea fishing industry. Iranian Fisheries Organization annually produces and release up to 19 million Bream fries size fo...
Reproductive behavior of male rainbow trout (Oncorhynchus mykiss) during reproductive period
In this study it was described and characterized the reproductive behavior of male rainbow trout during reproductive period. Results indicate that reproductive period is in the months of August until February. Semen prod...
Reproductive performance of crossbred dairy cows in Mekelle, Ethiopia
The study was conducted on 252 Holstein-Friesian (HF) crossbred cows maintained under farmer’s management system in and around Mekelle (Ethiopia). A total of 72 small-scale dairy farm owners were randomly selected and...