Artificial insemination in farm animals by Milad Manafi

By Milad Manafi

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2 was different among breeds in 2004, where Suffolk ewes had a significantly lower value than the other two breeds (Table 4). In 2006, the pregnancy rate of Ile de France ewes was significantly higher than that of the other breeds. In 2005, 2008 and 2009, there were significant differences among all three breeds. In the Bábolna Tetra breed, the highest P% was measured in 2009, which was significantly higher than in the other years (except 2005 and 2010). The P% in 2008 was significantly lower than in the other years.

Synchronization pregnancy rate was higher in TRT2 group compared to TRT1 group (68% vs. 03). However, resynchronization pregnancy rate (78%), percent of embryonic and fetal losses (12%), less and similar result, reports by Vale et al 1989, Campanile et al 2005, 2007. The final cumulative pregnancy rate without and with embryonic and fetal losses (93% and 85%) were similar between treatments. 11 (scale 1-5) from a farm in northeastern Corrientes Argentina (29◦ 42’ 20” S and 59◦ 23’ 17” W) were used in the study.

1 and 7 over the whole studied period. Entire rams with apron were used as teasing rams on five farms (No. 3, 4, 6, 9 and 10) and both kinds of rams were used on only one farm (No. 5). On farm No 2 and 8, vasectomised rams were used in the first four years, and entire rams with apron during the second four years, while on farm No. 11, the order was the reverse: the vasectomised rams were used in the second four years of the period. 7 The time and number of insemination Two inseminations were used on most of the farms (No.

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