Effects of farrowing induction on some farrowing characteristics in the pig: a review

IF 1.8 4区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE
N. H. Nam, L. T. Thuong, Nguyen Thi Le, Nguyen Van Nhat, Bui Tran Anh Dao, Tran Minh Hai, N. D. Truong, Do Khoa Thi Lanh, P. Sukon
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Abstract

Abstract Several farrowing induction programs have been used to increase the proportion of sow farrowing during the work period and the rate of farrowing supervision, as well as to promote the success of cross-fostering and the practice of all-in all-out in swine production. The present overview aimed to evaluate the effects of farrowing induction on farrowing duration, birth interval, birth weight, dystocia/birth assistance, and stillbirth in pigs. The results showed that via different routes of administration, either natural or synthetic prostaglandins alone or in combination mostly with uterotonic drugs, including oxytocin and carbetocin, have been used for the induction of farrowing. Sometimes other drugs, such as dexamethasone, estradiol, xylazine, ergometrine, and AGN190851, were added. Vulvar and perinatal routes reduced the intramuscular dose of prostaglandins by 50% to 75%, while equal effects remained. A split dose of prostaglandin 6 h apart should be used because it may enhance complete luteolysis. Additionally, if uterotonic drugs are used following prostaglandin injection, they should be injected after the birth of the first piglets at the earliest timepoint to ensure full opening of the cervix. These two practices decrease the farrowing duration, the birth interval, and dystocia. Induction should not be conducted more than 2 days earlier than the expected farrowing date in order to keep the stillbirth rate and birth weight unaltered. This review also revealed that certain factors, such as the rate of farrowing supervision, natural differences in piglets’ birth weights, litter size, gestation length, and treatment with altrenogest before induction, may be confounding factors that possibly alter the effect of induction programs on certain farrowing characteristics.
诱导分娩对猪某些分娩特征的影响综述
摘要为了提高母猪在工作期间的产仔比例和产仔监督率,促进猪生产中交叉饲养的成功和全面投入的实践,采用了几种诱导产仔方案。本综述旨在评估诱导分娩对猪的分娩时间、分娩间隔、出生体重、难产/助产和死产的影响。结果表明,通过不同的给药途径,无论是天然的或合成的前列腺素单独或主要与子宫强直药物,包括催产素和催产素,已用于诱导分娩。有时加入其他药物,如地塞米松、雌二醇、噻嗪、麦角新碱和AGN190851。外阴和围产期途径使前列腺素肌肉注射剂量减少了50%至75%,而效果保持不变。前列腺素每隔6小时服用一次,因为它可以促进完全的黄体溶解。此外,如果前列腺素注射后使用子宫强直药物,应在第一批仔猪出生后最早的时间点注射,以确保宫颈完全开放。这两种做法减少了分娩时间、分娩间隔和难产。为保持死胎率和出生体重不变,诱导不应早于预计分娩日期2天以上。本综述还揭示了某些因素,如分娩监督率、仔猪出生体重、窝产仔数、妊娠期长短和诱导前使用异丙孕酮等,可能是可能改变诱导方案对某些分娩特征影响的混杂因素。
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来源期刊
Annals of Animal Science
Annals of Animal Science 农林科学-奶制品与动物科学
CiteScore
4.00
自引率
5.30%
发文量
138
审稿时长
6-12 weeks
期刊介绍: Annals of Animal Science accepts original papers and reviews from the different topics of animal science: genetic and farm animal breeding, the biology, physiology and reproduction of animals, animal nutrition and feedstuffs, environment, hygiene and animal production technology, quality of animal origin products, economics and the organization of animal production.
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