Different doses of porcine luteinizing hormone in precocious puberty induction in gilts

被引:15
作者
Gama, RD [1 ]
Vianna, WL [1 ]
Pinese, ME [1 ]
Rosseto, AD [1 ]
Moretti, AD [1 ]
机构
[1] Univ Sao Paulo, Fac Med Vet & Zootecnia, Lab Pesquisa Suinos, Sao Paulo, Brazil
关键词
D O I
10.1111/j.1439-0531.2005.00605.x
中图分类号
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号
0905 ;
摘要
The use of hormonal protocols in puberty induction and synchronization of oestrus has lead to an increase in the efficiency of replacement gilts. The aim of this study was to evaluate different doses of porcine LH in precocious puberty induction and oestrus synchronization in a homogeneous group of gilts. Sixty-seven homogeneous prepubertal gilts (Camborough 22(R)) at 137 4 days of age and 87 7 kg were treated with three different hormonal protocols: T1 - 600 UI of equine chorionic gonadotrophin (eCG; Novormon(R)) and after a 72-h period 5 ing of LH (Lutropin(R)); T2 - 600 UI of eCG and a 72-h period 2.5 mg of LH; T3 - 600 UI of eCG and a 72-h period 1.25 mg of LH. The ovaries were examined at slaughter, on day 6 after the hormonal treatment. There were no statistical differences (p > 0.05) between the different LH doses in the percentage of the detected oestrus (T1 = 42.85%- T2 = 60.87%, T3 = 52.18%), oestrus duration (T1 = 4.44 +/- 16.30 h; T2 = 48.57 +/- 16.29 h, T3 = 39.33 +/- 11.42 h), number of corpora lutea (T1 = 9.61 +/- 5.43; T2 = 9.86 +/- 3.32, T3 - 8.13 +/- 5.52) and percentage of animals presenting ovarian cystic degeneration (T1 = 33.33%; T2 = 39.13%, T3 = 39.13%). The T2 (2.5 mg of LH) presented the lowest dispersion (p < 0.05) of the LH-ovulation interval (T1 = 37.17 +/- 4.07 h; T2 = 38.26 +/- 2.84 h; T3 = 36.25 +/- 5.69 h). The LH dose reduction to 2.50 and 1.25 mg presented equal results with the recommended dose of 5.0 mg, and could be used in the precocious induction of oestrus in gilts. The 2.5-mg LH dose showed the lowest dispersion of ovulation and it can be used in fixed-time artificial insemination programmes.
引用
收藏
页码:433 / 435
页数:3
相关论文
共 50 条
[41]   LUTEINIZING-HORMONE-MEDIATED PRECOCIOUS PUBERTY INDUCED IN FEMALE RATS BY A PREPUBERAL PITUITARY GRAFT [J].
PINILLA, L ;
LOPEZ, F ;
GONZALEZ, D ;
FERNANDEZGALAZ, C ;
CRIADO, JES ;
AGUILAR, E .
NEUROENDOCRINOLOGY, 1989, 50 (05) :495-499
[42]   Triptorelin stimulated luteinizing hormone concentrations for diagnosing central precocious puberty: study of diagnostic accuracy [J].
Rade Vukovic ;
Tatjana Milenkovic ;
Ivan Soldatovic ;
Sandra Pekic ;
Katarina Mitrovic ;
Sladjana Todorovic .
Endocrine, 2022, 75 :934-941
[43]   Second oestrus synchronization and precocious embryo viability after puberty induction in gilts by the use of gonadotrophin treatment [J].
do Lago, V ;
Vianna, WL ;
Gama, RD ;
Rosseto, AD ;
Pinese, ME ;
Moretti, AD .
REPRODUCTION IN DOMESTIC ANIMALS, 2005, 40 (02) :141-144
[44]   Does Basal Morning Luteinizing Hormone (bLH) Predict Central Precocious Puberty (CPP) in Girls? [J].
Baronio, Federico ;
Assirelli, Valentina ;
Deiana, Giuseppina ;
Alqaisi, Randa ;
Ortolano, Rita ;
Di Natale, Valeria ;
Candela, Egidio ;
Cassio, Alessandra .
MEDICINA-LITHUANIA, 2024, 60 (03)
[45]   Triptorelin stimulated luteinizing hormone concentrations for diagnosing central precocious puberty: study of diagnostic accuracy [J].
Vukovic, Rade ;
Milenkovic, Tatjana ;
Soldatovic, Ivan ;
Pekic, Sandra ;
Mitrovic, Katarina ;
Todorovic, Sladjana .
ENDOCRINE, 2022, 75 (03) :934-941
[46]   Role of luteinizing hormone urinary levels in the diagnostic and therapeutic management of female central precocious puberty [J].
Ilaria Brambilla ;
Carmen Guarracino ;
Carmelo Pistone ;
Catherine Klersy ;
Amelia Licari ;
Gian Luigi Marseglia ;
Enrico Tondina .
Italian Journal of Pediatrics, 49
[47]   SOMATOMEDIN-C IN NORMAL PUBERTY AND IN TRUE PRECOCIOUS PUBERTY BEFORE AND AFTER TREATMENT WITH A POTENT LUTEINIZING-HORMONE-RELEASING HORMONE AGONIST [J].
HARRIS, DA ;
VANVLIET, G ;
EGLI, CA ;
GRUMBACH, MM ;
KAPLAN, SL ;
STYNE, DM ;
VAINSEL, M .
JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM, 1985, 61 (01) :152-159
[48]   HORMONE EXCRETION IN PRECOCIOUS PUBERTY IN GIRLS [J].
BULBROOK, RD ;
GREENWOOD, FC ;
SNAITH, AH .
ARCHIVES OF DISEASE IN CHILDHOOD, 1958, 33 (170) :295-300
[49]   Luteinizing Hormone Secretion during Gonadotropin-Releasing Hormone Stimulation Tests in Obese Girls with Central Precocious Puberty [J].
Lee, Hae Sang ;
Yoon, Jong Seo ;
Hwang, Jin Soon .
JOURNAL OF CLINICAL RESEARCH IN PEDIATRIC ENDOCRINOLOGY, 2016, 8 (04) :392-398
[50]   TRUE PRECOCIOUS PUBERTY COMPLICATING CONGENITAL ADRENAL-HYPERPLASIA - TREATMENT WITH A LUTEINIZING-HORMONE-RELEASING HORMONE ANALOG [J].
PESCOVITZ, OH ;
COMITE, F ;
CASSORLA, F ;
DWYER, AJ ;
POTH, MA ;
SPERLING, MA ;
HENCH, K ;
MCNEMAR, A ;
SKERDA, M ;
LORIAUX, DL ;
CUTLER, GB .
JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM, 1984, 58 (05) :857-861