Investigations on Kidding in Egyptian Baladi, goats with emphasis on immunogenetic structures and progesterone level

Twenty late pregnant Baladi goats were used to investigate kidding process with emphasis on the immunogenetic structures and progesterone level. Blood samples were collected during the late stage of gestation for serological investigations against brucellosis, salmonellosis and toxoplasmosis as well as for evaluation of progesterone level, blood grouping and electrophoretic analysis of plasma proteins. Genotypes data from four blood protein loci and 22 antigens of 7 blood groups were used to detect the genetic markers associated with normal and difficult births. Results of the current investigation revealed that despite all the experimental Baladi does were free from brucellosis, salmonellosis and toxoplasmosis, 40% of them suffered from dystocia and they have polymorphic structure of all studied loci. The most frequent antigenic factors of eutocic goats were A[3], Y[2], B, T[1], X x[3], Cb, R. on the other hand, these animals were characterized by predominance of Alb[B] and Tf[B] genes. Concerning dystocic goats they revealed high frequencies of S[26], N and L antigens with predominance of homozygotic genotypes Hb[A], Alb[A], Am[A] and Tf[A] Plasma progesterone level, few days before kidding was obviously lower in eutocic [0.38 ng/ml] than dystocic [13.99 ng/ml] does. It could be concluded from this study that kidding process is mainly controlled by B, cb, S[26], antigens and An[A] gene

Ovarian activity of barki ewes in relation to plane of nutrition

The present investigation aimed to improve the ovarian activity of Barki breed by means of nutritional management. Three groups of Barki ewes were fed on maintenance ration, maintenance besides nitrogenous supplement and maintenance besides carbonesious supplement. The results revealed significant increases in live body weight and daily gain in supplemented groups than in maintenance one. In the same time, the estrous cycles were superior with regular rhythm in both supplemented groups. Plasma progesterone concentrations showed significant higher figures in ewes fed maintenance than in supplemented ewes

Gestation and lambing of barki ewes in relation to plane of nutrition

The present investigation aimed to improve the reproductive and productive efficiency of Barki ewes managed under different planes of nutrition. The experiment was carried out on 3 groups of Barki ewes fed on maintenance ration, maintenance beside nitrogenous supplement and maintenance beside carbonesious supplement for 3 months premating. The results revealed that the level of supplementation had a non significant effect on both the gestation length and the sex of the off spring. On the contrary, progesterone concentration showed significant decrease in the supplemented 2 groups [2.36 +/- 0.95 and 2.59 +/- 0.76 ng/ml]. Lambing rates averaged 90, 100 and 100% in the 3 groups, respectively, without twinning. Sex ratio of newly born averaged 1.5, 0.67 and 0.67, respectively, and lamb birth weight was significantly heavier in nitrogenous supplemented ewes [3.50 +/- 10.17 kg] than in carbonesious supplemented ones [3.20 +/- 0.17 kg] or in control group [2.95 +/- 0.21 kg]

Effect of plane of nutrition on reproductive performance in barki ewes 2gestation and lambing

The experiment was carried out on three groups of Barky ewes fed on maintenance ration. Additional supplement was offered three months premating. The first group was supplemented by high protein supplement [36.6% total protein and 2.4 Mcal/kg digestible energy]. The second group was supplemented by low protein level [11.9% total protein and 3% Mcal/kg digestible energy], and the 3rd group was kept on maintenance ration and used as control. The results revealed that the level of supplementation had a nonsignificant effect on both gestation length and the sex of the offspring. On the contrary, progesterone concentration showed significant [P <0.05] decrease in the two supplemented groups. Lambing rates averaged 100, 90 and 100% in the 3 groups, respectively, without twining. Sex ratio of newly born averaged 1.5, 0.67 and 0.67, respectively, and lamb birth weight was significantly [P <0.01] heavier in ewes supplemented with high protein level than in either those supplemented with low protein level or in the control group. It is recommended to keep Barky ewes at the premating period on high level protein supplement to improve health condition which reflected on the crop