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31.
Small ruminant production in the South West Province of Cameroon is practised mostly by subsistence farmers in the rural areas on natural grass pastures which grow once the primary forest has been cleared. Investigations revealed certain endo- and ectoparasites that were abundant and caused problems on the pastures to both animals and farmers. Haemonchus contortus was the most prevalent species with a prevalence of 94.23%. The highest mean monthly intensity was obtained in August and there was a significant difference (P<0.05) from the other months. Strongyle infections were prevalent in 93.18% of the animals examined. In the flock there was a prevalence of 96.25% in sheep as opposed to 86% in goats. The prevalence in the subsistence system was 95.4%. Mean monthly egg counts and prevalence of flukes was highest in December, 187.84 (29.73%). The overall prevalence of flukes was 73.88% with an overall mean intensity of 22 flukes per animal. The most abundant tick species was Haemaphysilis leachi. Genital distribution of ticks was significantly higher (P<0.05) in females than males. In the males they were more concentrated around the scrotum. 相似文献
32.
OAT Peltoniemi A Tast M Heinonen J Oravainen C Munsterhjelm O Hälli C Oliviero P Hämeenoja JV Virolainen 《Reproduction in domestic animals》2010,45(6):1008-1014
The effect of ad libitum (ADLIB) feeding strategy on the fertility of the group housed sow was studied in a prospective field trial during 1.5 years. All study animals farrowed under standard farrowing circumstances in crates, and they were provided with an ad libitum feeding throughout the 30‐day lactation. After weaning, animals were randomly allocated to one of the two dry sow feeding strategies (AD LIB or CONT). After oestrus detection in groups, they were artificially inseminated and moved into pregnancy pens with partially slatted floor, in groups of 40 sows each. The ADLIB sows (n = 447) were loose housed and provided with ad libitum access to 7.7 MJ/kg feed high in fibre from two feeders per group. The control sows (n = 479; CONT) were also loose housed and given a standard dry sow feed in feeding stalls once a day (2.5 kg/day. The energy content of the feed was 9.3 MJ/kg NE). The feeding strategy (ADLIB vs CONT) had no effect on pregnancy rate (85.8 vs 90.9, p > 0.05), weaning to oestrus interval (7.7 vs 7.3 days, p > 0.05), piglets born alive (11.5 ± 3.5 vs 11.6 ± 3.3, p > 0.05), stillborn piglets (1.2 ± 1.8 vs 0.9 ± 1.5, p > 0.05) nor on progesterone concentration (p > 0.05). CONT sows weaned more piglets (9.7 ± 2.2 vs 9.4 ± 2.0, p < 0.01), whereas the piglets of AD LIB sows were heavier at weaning (8.8 ± 0.9 vs 8.0 ± 1.3 kg, p < 0.05). In conclusion, ad libitum feeding with a high in fibre diet during pregnancy did not affect the reproductive performance. 相似文献
33.
毛皮动物一般指那些能提供高档裘皮产品的动物,属于野生或经过人工驯化饲养的哺乳类动物。作者对毛皮动物的栖息环境、采食习性、行为等野生习性及驯化的关键问题和方法进行了综述。 相似文献
34.
Tropical Animal Health and Production - 相似文献