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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
01/08/1992 |
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Data da última atualização: |
22/07/2025 |
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Autoria: |
MOORE, N. W.; SHELTON, J. N. |
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Título: |
Response of the ewe to a horse anterior pituitary extract. |
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Ano de publicação: |
1964 |
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Fonte/Imprenta: |
Journal Reproduction and Fertility, v. 7, n. 1, p. 79-87, 1964. |
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DOI: |
10.1530/jrf.0.0070079 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: A trial of factorial design is described, in which was studied the response of the cyclic ewe to a horse anterior pituitary extract (HAP) Three total-dose levels of HAP (60, 90 and 135 mg) were administered over 2 or 3 days commencing on the 12th day of the oestrous cycle. The total dose was given as either two or three equal daily injections, or four or six equal twice-daily injections. Highly significant (P<0·001) linear dose-response relationships were observed in the ovulatory response to both 2- and 3-day treatments. Treatment for 3 days was significantly better than treatment for 2 days in the proportion of ewes ovulating (P<0·05), ovulation rates (P<0·001) and fertilization of eggs shed (P< 0·001). For both 2- and 3-day treatments the ovarian responses varied with the time elapsing between the final HAP injection and the onset of oestrus. Maximum responses were observed in ewes in oestrus 24 to 48 hr after the cessation of treatment. Fertilization in ewes treated for 2 days, but not in those treated for 3 days, also varied with the time elapsing between the cessation of treatment and onset of oestrus. The results showed HAP to be a most effective preparation for the induction of multiple ovulation in the ewe. Table 1. Design of the trial; Table 2. Oestrous and ovarian responses to hap treatment; Table 3. Effect of hap treatment on the percentage of follicles ruptured and of eggs fertilized; Table 4. Relationship between the time interval from and of treatment to onset of oestrus and the ovarian response to treatment; Table 5. Relationship between time interval from and of treatment to onset of oestrus and the proportion of eggs fertilized. MenosAbstract: A trial of factorial design is described, in which was studied the response of the cyclic ewe to a horse anterior pituitary extract (HAP) Three total-dose levels of HAP (60, 90 and 135 mg) were administered over 2 or 3 days commencing on the 12th day of the oestrous cycle. The total dose was given as either two or three equal daily injections, or four or six equal twice-daily injections. Highly significant (P<0·001) linear dose-response relationships were observed in the ovulatory response to both 2- and 3-day treatments. Treatment for 3 days was significantly better than treatment for 2 days in the proportion of ewes ovulating (P<0·05), ovulation rates (P<0·001) and fertilization of eggs shed (P< 0·001). For both 2- and 3-day treatments the ovarian responses varied with the time elapsing between the final HAP injection and the onset of oestrus. Maximum responses were observed in ewes in oestrus 24 to 48 hr after the cessation of treatment. Fertilization in ewes treated for 2 days, but not in those treated for 3 days, also varied with the time elapsing between the cessation of treatment and onset of oestrus. The results showed HAP to be a most effective preparation for the induction of multiple ovulation in the ewe. Table 1. Design of the trial; Table 2. Oestrous and ovarian responses to hap treatment; Table 3. Effect of hap treatment on the percentage of follicles ruptured and of eggs fertilized; Table 4. Relationship between the time interval from and of treatmen... Mostrar Tudo |
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Palavras-Chave: |
Tissue Extracts. |
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Thesagro: |
Ciclo Estral; Ovino; Reprodução; Sincronização do Cio. |
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Thesaurus Nal: |
Fertilization (reproduction); Horses; Ovulation; Pituitary gland; Reproduction; Sheep. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02465naa a2200277 a 4500
001 1521990
005 2025-07-22
008 1964 bl uuuu u00u1 u #d
024 7 $a10.1530/jrf.0.0070079$2DOI
100 1 $aMOORE, N. W.
245 $aResponse of the ewe to a horse anterior pituitary extract.$h[electronic resource]
260 $c1964
520 $aAbstract: A trial of factorial design is described, in which was studied the response of the cyclic ewe to a horse anterior pituitary extract (HAP) Three total-dose levels of HAP (60, 90 and 135 mg) were administered over 2 or 3 days commencing on the 12th day of the oestrous cycle. The total dose was given as either two or three equal daily injections, or four or six equal twice-daily injections. Highly significant (P<0·001) linear dose-response relationships were observed in the ovulatory response to both 2- and 3-day treatments. Treatment for 3 days was significantly better than treatment for 2 days in the proportion of ewes ovulating (P<0·05), ovulation rates (P<0·001) and fertilization of eggs shed (P< 0·001). For both 2- and 3-day treatments the ovarian responses varied with the time elapsing between the final HAP injection and the onset of oestrus. Maximum responses were observed in ewes in oestrus 24 to 48 hr after the cessation of treatment. Fertilization in ewes treated for 2 days, but not in those treated for 3 days, also varied with the time elapsing between the cessation of treatment and onset of oestrus. The results showed HAP to be a most effective preparation for the induction of multiple ovulation in the ewe. Table 1. Design of the trial; Table 2. Oestrous and ovarian responses to hap treatment; Table 3. Effect of hap treatment on the percentage of follicles ruptured and of eggs fertilized; Table 4. Relationship between the time interval from and of treatment to onset of oestrus and the ovarian response to treatment; Table 5. Relationship between time interval from and of treatment to onset of oestrus and the proportion of eggs fertilized.
650 $aFertilization (reproduction)
650 $aHorses
650 $aOvulation
650 $aPituitary gland
650 $aReproduction
650 $aSheep
650 $aCiclo Estral
650 $aOvino
650 $aReprodução
650 $aSincronização do Cio
653 $aTissue Extracts
700 1 $aSHELTON, J. N.
773 $tJournal Reproduction and Fertility$gv. 7, n. 1, p. 79-87, 1964.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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