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Articles by Y.G. Sabo
Total Records ( 2 ) for Y.G. Sabo
  V.A. Maina , A. Muktar and Y.G. Sabo
  The ovaries of 127 Bos indicus cows were used to evaluate the influence of Body Condition Score (BCS) on ovarian activity. Each cow was given a body condition score using a scale of 1 to 5 before slaughter. The presence or absence of pregnancy was noted after slaughter and the ovaries were collected. Follicles were measured and identified as small (1 to 4 mm), medium (5 to 8 mm) or large (≥9 mm). Corpus luteum was classified as functional CL or Corpus albicans based on gross morphology. Luteal structures and follicles were compared with different phases of the oestrus cycle. Based on this, the cows were classified as cycling, pregnant, anestrus, prepubertal heifers or having abnormal ovarian cyclicity. Cows with BCS 3 exhibited more medium follicles (p<0.001) than cows with BCS 1 and BCS 2. Cows with BCS 3 had more large follicles (p<0.01) than cows with BCS 1. The incidences of cycling and pregnant animals correlated positively with BCS. Incidences of anestrus and abnormal ovarian cyclicity correlated negatively with BCS. It was concluded that change in BCS had significant effect on ovarian function of Zebus cows.
  Y.G. Sabo , U.K. Sandabe , V.A. Maina and H.G. Balla
  Today prostaglandin and progesterone has been found widely used in several schemes of oestrus synchronization and controlled breeding program. Several controlled breeding program, have been developed for synchronizing groups of all open or lactating cows within a breeding group with or without ovarian palpation. Such programs are reviewed in this article which involves extending the luteal phase by treatment with exogenous progesterone such as: progesterone treatment regimes using syncro-mate-B, progesterone releasing intravaginal device, melengesterol acetate-select and melegestrol acetate plus prostaglandin. Also reviewed in the program is the termination of the luteal phase by treatment with prostaglandin or its analogues. These includes, controlled breeding without ovarian palpation such as, the 7-days program; 11-days program, target breeding, ovsynch program, Heat synch, Cosynch and pre synch-ovsynch program. In our opinion full potential of progesterone and prostaglandin for the detection of oestrus and timed artificial insemination should be utilized. This reduces the much labour input employed in previous years. The practitioner of the livestock herd health must-develop strategies for the delivery of this technology to livestock farmers, its use and limitations.
 
 
 
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