Results 21 to 30 of about 105 (71)
Veterinarska stanica, 2021 This study was performed on an industrial dairy farm near Tehran province, Iran, on 666 lactating Holstein cows from September 2019 to June 2020 in order to eliminate the harmful effects of heat stress on the reproductive performance of the cows. The hypothesis of the recent study was that by increasing the serum concentration of progesterone (P4) in ...
Kohsari, Hesam, Berenjian, Khatereh
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Ultrasonographic patterns of different regions of uterus according to pregnancy in cows and heifers
Animal Science Journal, Volume 94, Issue 1, January/December 2023., 2023 Abstract This study aimed to detect pregnancy within the first 20 days after artificial insemination by evaluating the ultrasonographic patterns of the different regions of uterus in Holstein heifers and cows. Animals were divided into subgroups according to pregnancy on 28th day as pregnant (heifer, n: 15; cow, n: 15) and non‐pregnant (heifer, n: 15 ...
Kemal Tuna Olğaç +3 more
wiley +1 more source
Current status of assisted reproductive technologies in buffaloes
Animal Science Journal, Volume 93, Issue 1, January/December 2022., 2022 Abstract Buffaloes are raised by small farm holders primarily as source of draft power owing to its resistance to hot climate, disease, and stress conditions. Over the years, transformation of these animals from draft to dairy was deliberately carried out through genetic improvement program leading to the development of buffalo‐based enterprises ...
Kanokwan Srirattana +9 more
wiley +1 more source
ADAPTING THE TREATMENT OF OVARIAN CYSTS ACCORDING TO THEIR TYPE IN DAIRY CATTLE [PDF]
Journal of Applied Life Sciences and Environment, 2021 Ovarian cysts, estimated as the most frequent ovarian disorder in dairy cattle, can impact the economic aspect and trigger serious loss by affecting the reproductive performance.
Silviu-Ionuț BORȘ, Alina BORȘ
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Synchronization of Ovulation and Timed Insemination in Lactating Dairy Cattle
Folia Veterinaria, 2023 Successful reproduction of lactating dairy cattle, or in other words its reproductive performance is a limiting factor in the profit ratio of cattle breeding regarding market production.
Moskáľová L., Pošivák J.
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Acta Veterinaria, 2022 The reproductive efficiency of the cows was monitored after two resynchronization protocols: Ovsynch (OVS) and Double Ovsynch (DOS). The research initially included 70 HF cows who entered the first synchronization protocol – Presynch.
Đorđević Milan +6 more
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Can GnRH Be Used to Induce Ovulation Early in Lactation and Improve Fertility in Dairy Cows?
EDIS, 2014 It is well established that early cyclicity results in increased pregnancy per artificial insemination and decreased time to pregnancy. But none of the previous studies have used synchronization programs such as the Presynch-Ovsynch as part of their ...
Klibs N. Galvão
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Jurnal Kedokteran Hewan, 2018 Penelitian ini bertujuan mengetahui peningkatan level steroid dan persentase kebuntingan sapi aceh terhadap induksi ovulasi dengan metode presynch-ovsynch.
Mulyadi Adam +6 more
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Efficacy of the presynch-ovsynch program on some reproductive parameters in postpartum dairy cows
Acta veterinaria, 2008 In this study, the aim was to evaluate the presynch-ovsynch protocol on the intervals from calving to first insemination, calving to pregnancy, calving to calving in postpartum lactating cows. Lactating Holstein cows (n=104, 3-5 years old, 450-500 kg BW, 27±3 kg/day average milk yield) were enrolled in the study 26-41 days postpartum.
Aköz, Mehmet +2 more
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Journal of Dairy Science, 2022 : Lactating dairy cows are classified as spontaneous ovulators, in which establishment of pregnancy depends on the accuracy of detection of behavioral estrus for correct timing of artificial insemination (AI).
P.M. Fricke, M.C. Wiltbank
doaj +1 more source