Zobrazeno 1 - 10
of 1 023
pro vyhledávání: '"timed artificial insemination"'
Autor:
Carlos E.C. Consentini, Leonardo F. Melo, Tattiany Abadia, Bruno Gonzales, Jessica C.L. Motta, Rodrigo L.O.R. Alves, Lucas O. e Silva, Milo C. Wiltbank, Roberto Sartori
Publikováno v:
Journal of Dairy Science, Vol 107, Iss 7, Pp 5122-5131 (2024)
ABSTRACT: The present study compared 2 strategies to initiate a progesterone (P4)-based timed artificial insemination (TAI) protocol for lactating dairy cows: only GnRH or estradiol benzoate (EB) plus GnRH (EB+GnRH). Lactating Holstein cows (n = 487;
Externí odkaz:
https://doaj.org/article/1623c96e53e141448952409bc74a5f36
Autor:
M.R. Lauber, P.M. Fricke
Publikováno v:
Journal of Dairy Science, Vol 107, Iss 4, Pp 2524-2542 (2024)
ABSTRACT: Our objective was to compare insemination rate and pregnancies per artificial insemination (P/AI) of lactating Jersey cows inseminated at first service with sexed Jersey or conventional beef semen after submission to a Double-Ovsynch protoc
Externí odkaz:
https://doaj.org/article/fab4ac7b5f3b4e42b00c0246de24b275
Publikováno v:
The Journal of Reproduction and Development, Vol 70, Iss 1, Pp 30-34 (2023)
This study investigated the effects of timed artificial insemination (TAI) and equine chorionic gonadotropin (eCG) administration on lactating dairy cows under heat-stress conditions (average temperature-humidity index: 80). Timed artificial insemina
Externí odkaz:
https://doaj.org/article/77532ea1946842f1a5a59efb547d3894
Publikováno v:
Journal of Dairy Science, Vol 106, Iss 7, Pp 5115-5126 (2023)
ABSTRACT: This study aimed to determine the effect of 2 simple breeding strategies combining artificial insemination (AI) after detection of estrus (AIED) and timed AI (TAI) on first-service fertility in lactating Holstein cows. Weekly, lactating Hol
Externí odkaz:
https://doaj.org/article/57d6a18020014ebe9e0d6a4fe0127a98
Publikováno v:
Journal of Dairy Science, Vol 106, Iss 6, Pp 4291-4305 (2023)
ABSTRACT: The objective of this observational study was to evaluate the association between increased physical activity at first artificial insemination (AI) and subsequent pregnancy per AI (P/AI) in lactating Holstein cows following spontaneous estr
Externí odkaz:
https://doaj.org/article/6e0965a3b765477a8347377072669749
Publikováno v:
Animal Bioscience, Vol 36, Iss 4, Pp 591-600 (2023)
Objective We aimed to evaluate the efficacy of a modified Double-Ovsynch protocol vs artificial insemination following estrus detection (AIED) for the enhancement of reproductive performance in Hanwoo cattle. Methods Four hundred twelve Hanwoo cows w
Externí odkaz:
https://doaj.org/article/f73ba362108a4f9ca0f29026ecbcac7a
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Autor:
Natalia Machado Rahal, Gabriela Bueno Luz, Kauê Rodriguez Martins, Bernardo Garziera Gasperin, Josiane de Oliveira Feijó, André Gustavo Cabrera Dalto, Monique Tomazele Rovani, Rodrigo Casquero Cunha, Marcio Nunes Corrêa
Publikováno v:
Revista Brasileira de Parasitologia Veterinária, Vol 32, Iss 3 (2023)
Abstract The aim of this study was to investigate the association between chronic Anaplasma marginale and Babesia spp. infection and hematological parameters of pregnant and non-pregnant taurine heifers. Blood samples from 94 females were collected o
Externí odkaz:
https://doaj.org/article/43fe5769e57f419da23b4d01047d005e
Publikováno v:
Journal of Dairy Science, Vol 106, Iss 1, Pp 755-768 (2023)
ABSTRACT: Our objective was to evaluate the effect of 3 different Ovsynch protocols on progesterone (P4) and pregnancies per artificial insemination (P/AI), where all cows received a P4 releasing intravaginal device (PRID) from d 0 until d 8. We hypo
Externí odkaz:
https://doaj.org/article/bda9401c6e4f4899b7923f9f8e28dc71
Autor:
Bruna Lima Chechin Catussi, Laísa Garcia da Silva, Fernando José Schalch Júnior, Rafaela Maria Sutiro Angelieri Auder, Juan Fernando Morales Gómez, Rodolfo Daniel Mingoti, Sérgio Carlos Franco Morgulis, Pietro Sampaio Baruselli
Publikováno v:
Animal Bioscience, Vol 35, Iss 11, Pp 1675-1688 (2022)
Objective Pregnant Nelore heifers (n = 417) were used to evaluate the effects of supplementation with monensin-molasses multinutrient block (B) during pre and/or postpartum on reproductive and progeny performance. Methods Heifers were allocated in fo
Externí odkaz:
https://doaj.org/article/4e065eff399e47c2803077a61ef017af