波尔山羊和不同肉用品种绵羊超排处理效果比较分析

Comparative and Analysis of Superovulation on Boer Goats and Different Species of Meat Sheep

在冬季和春季用CIDR+FSH+PG对158只无角道赛特羊、165只萨福克羊和39只波尔山羊分别实施超排处理。处理后结果表明:春季无角道赛特羊与萨福克羊间采卵数、可用胚数差异不显著(P>0.05),春季波尔山羊采卵数(17.58±2.57枚)、可用胚数(15.15±3.56枚)极显著(P<0.01)高于无角道赛特羊与萨福克羊;在春季和冬季,无角道赛特羊采卵数、可用胚数差异不显著(P>0.05),而萨福克羊春季采卵数显著(P<0.05)高于冬季(分别为10.57±3.84枚,8.41±3.16枚);在春季2.5岁与1.5岁和2岁的无角道赛特羊超排处理后采卵数、可用胚数差异显著(P<0.05),1.5岁和2岁无角道赛特羊超排处理后采卵数、可用胚数差异不显著(P>0.05)。不同体重的公羊在春季和冬季对萨福克羊超排的影响均不显著(P>0.05)。冬季无角道赛特羊体重≤69kg组与体重≥80kg组采卵数差异显著(P<0.05),分别为5.46±3.27枚、12.50±5.62枚;可用胚数差异显著(P<0.05),分别为2.81±2.01枚和6.00±3.15枚。

158 Poll Dorsets （group 1）,165 Suffolks （group 2） and 39 Boer Goats （group 3）were superovulated as donor animals with the following treatments： CIDR ＋ FSH ＋ PG in winter （ treatment 1 ） and in spring （ treatment 2 ）, respectively. Compmed with the three groups in treatment 2, the result was that the quantity of collected embryos and usable embryos （17.58± 2.57 and 15.15 ±3.56, respectively）in group 3 was significantly higher than group 1 and group 2（ P 〈 0.01 ）. There were no significant difference between group 1 and group 2 （ P 〉 0.05 ）. There were no significant difference between treatment 1 and treatment 2 on the quantity of collected embryos and usable embryos of Poll Dorset（ P 〉 0.05）. However, the quantity of collected embryos of Suffolks in the spring（ 10.57 ± 3.84） was significantly higher than that in the winter（8.41 ± 3.16）. The quantity of collected embryos and usable embryos of 2.5-year-old Poll Dorsets in the spring was significantly higher than that 1.5-year-old and 2-year-old （ P 〈 0.01 ）. However, there Were no significant difference between 1.5-year-old and 2-year-old （ P 〉 0.05）. There were significant difference between BW （ hotly weight） ≤ 69kg group and BW ≥ 80kg group on the quantity of collected embryos （ P 〈 0.05,5.46 ± 3.27 and 12. 50±5.62,respectively）and usable embryos （ P 〈0.05,2.81± 2.01 and 6.00± 3.15, respectively） of Poll Dorsets in the winter.