EXPERIMENTS WITH CHINESE PIGS IN FRANCE .1. REPRODUCTIVE-PERFORMANCE IN PURE AND CROSS BREEDING WITH EUROPEAN BREEDS
EXPERIMENTS WITH CHINESE PIGS IN FRANCE .1. REPRODUCTIVE-PERFORMANCE IN PURE AND CROSS BREEDING WITH EUROPEAN BREEDS
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DOI：
10.1186/1297-9686-15-2-225
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发表时间：
1983-01-01
影响因子：
4.1
通讯作者：
CARITEZ, JC
中科院分区：
文献类型：
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作者：
LEGAULT, C;CARITEZ, JC
将3种本地中国品种的生殖性能：Meishan（MS），Jiaxing（JX）和Jinhua（JH）与6种遗传类型的F1女性的F1女性的植物相提并论，每种中国品种的一只公猪与2种欧洲品种的12个母猪相结合。 ：大白色（LW）和法国陆地（LF），以及由LW .Times产生的F1女性的表现。 MS Cross。在总共278种纯种和226只杂交动物中，平均乳头数量为16.3。+ - 。 1.1在MS，19.9。+ - 。 1.4在JX，16.5。+ - 。 1.1在JH，14.7。+ - 。 1.6在f1 ms，16.7。+ - 。 1.7在F1 JX和15.8。+ - 。 1.4在F1 JH中。在总共75种纯种和114个杂交镀金中，青春期的年龄为81。+ - 。 9，91。+ - 。 10，109。+ - 。 15，87。+ - 。 11，93。+ - 。 13和96。+ - 。这6种遗传类型分别为14天。在哺乳期（30天）的300种肥胖期间测量了母猪的垃圾大小，垃圾重量和食物摄入量，其中136个来自镀金。出生时和断奶时的垃圾大小显着不同的两组被区分了。多产组包括5种F1类型（MS.Times。LF，MS.Times。LW，JX.Times。LF，JX.Times。LW和LW.Times。MS）和1个纯种（MS）。在这一组中，出生时的平均垃圾大小为13.5-15.4，断奶为11.4-13.3。在出生时和21天的垃圾重量中，可以区分3个不同的组：在8种遗传类型（6种多产类型以及LW和LF）中观察到了最佳性能。在2个纯品种（JX和HH）中获得了最差的结果，JH交叉处于中间位置。根据泌乳期间浓缩液的摄入量，有3组的平均值显着不同：欧洲母猪（LW和LF）的消耗比一组8种遗传类型多30-52千克（7种类型的F1和纯种MS ），比纯种JX和JH母亲高约80公斤。这些初步的结果似乎表明，某些中国品种（MS和JX）与欧洲品种（LW和LF）之间的适当交叉允许使用F1 SOW，该SOW的首个sow至少是1个月。早些时候，这是更经济的（每年至少节省120公斤的浓缩剂饲料），并且更有生产力（有5-8头断奶/年）。结果，断奶小猪的生产成本可以减少40-60法郎。
The reproductive performance of 3 native Chinese breeds: Meishan (MS), Jiaxing (JX) and Jinhua (JH) was compared with that of 6 genetic types of F1 females resulting from mating one boar of each Chinese breed to 12 sows of 2 European breeds: Large White (LW) and French Landrance (LF), and with the performance of F1 females resulting from the LW .times. MS cross. On a total of 278 purebred and 226 crossbred animals, average teat number was 16.3 .+-. 1.1 in MS, 19.9 .+-. 1.4 in JX, 16.5 .+-. 1.1 in JH, 14.7 .+-. 1.6 in F1 MS, 16.7 .+-. 1.7 in F1 JX and 15.8 .+-. 1.4 in F1 JH. On a total of 75 purebred and 114 crossbred gilts, age at puberty was 81 .+-. 9, 91 .+-. 10, 109 .+-. 15, 87 .+-. 11, 93 .+-. 13 and 96 .+-. 14 days, respectively, for these 6 genetic types. Litter size, litter weight and food intake of the sow during the suckling period (30 days) were measured on 300 farrowing of which 136 were from gilts. Two groups with significantly different litter size at birth and weaning were distinguished. The prolific group included 5 F1 types (MS .times. LF, MS .times. LW, JX .times. LF, JX .times. LW and LW .times. MS) and 1 pure breed (MS). In this group, mean litter size at birth varied from 13.5-15.4 and at weaning from 11.4-13.3. In litter weight at birth and at 21 days 3 different groups could be distinguished: the best performance was observed in 8 genetic types (the 6 prolific types plus LW and LF). The poorest results were obtained in 2 pure breeds (JX and HH), with JH crosses in an intermediate position. On the basis of the intake of concentrate feed during lactation, there were 3 groups whose means were significantly different: European sows (LW and LF) consumed 30-52 kg more than a group of 8 genetic types (7 types of F1 and purebred MS), and about 80 kg more than purebred JX and JH sows. These preliminary results seem to indicate that an appropriate cross between certain Chinese breeds (MS and JX) and a European breed (LW and LF) allows the use of a F1 sow which has its first farrowing at least 1 mo. earlier, which is more economic (at least 120 kg of concentrate feed saved each year), and is more productive (5-8 more piglets weaned/yr). As a consequence, the production cost of a weaned piglet could be reduced by 40-60 Francs.