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Animal Science Database

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Abstract

The goals of this study were to assess whether the injection of 1 mg of estradiol cypionate (ECP) at 13 days after service of artificial insemination (AI) increases fertility in the study subject and if the same dose injected in the near estrus (20±1 days) after artificial insemination services...

Author(s)
Leyva, C.; Aguilar, D.; Morales, J. L.; Pérez-López, S.; Véliz, F. G.; Soto-Domínguez, A.; Morán Martínez, J.
Publisher
Taylor & Francis, Abingdon, UK
Citation
Journal of Applied Animal Research, 2016, 44, 1, pp 24-26
Abstract

The results of a comparative analysis of the productivity of Holsteinized Black-and-White cows are presented, depending on the age of the first insemination. Primers of the Wis Beck Ideal line had the highest productivity, and it was 10073 kg. They outperformed their contemporaries of the line...

Author(s)
Basonov, O. A.
Publisher
Redaktsiya zhurnala Zootekhniya, Moscow, Russia
Citation
Zootekhniya, 2018, No.11, pp 30-32
Abstract

The objectives of the present study were: (1) to investigate variation in the genetic component of heat stress for nonreturn rate at 56 days after first artificial insemination (NR56); (2) to identify and characterize the genotype by environment interaction (G × E) due to heat stress for NR56 of...

Author(s)
Santana Júnior, M. L.; Bignardi, A. B.; Stefani, G.; El-Faro, L.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2017, 98, pp 101-107
Abstract

Our aim was to investigate insemination techniques in order to improve pregnancy rates of artificial insemination (AI) using sex-sorted semen (sexed AI) in cattle in tropical and subtropical (T/ST) regions. In T/ST regions, the pregnancy rates by sexed AI are reportedly the lowest in the hottest...

Author(s)
Chang LianBen; Chou ChihJen; Shiu JiaShian; Tu PoAn; Gao ShiXuan; Peng ShaoYu; Wu ShinnChih
Publisher
Springer, Amsterdam, Netherlands
Citation
Tropical Animal Health and Production, 2017, 49, 6, pp 1157-1162
Abstract

The objective was to determine the efficiency of insemination with sexed semen at spontaneous estrus and synchronisation of ovulation, and the effects of days in milk, insemination number, parity, and daily milk yield on pregnancy rates in lactating Holstein cows. A total 1,000 first to fourth...

Author(s)
Kurykin, J.; Jalakas, M.; Kaart, T.; Jaakma, Ü.
Publisher
Lietuvos Veterinarijos Akademija, Kaunas, Lithuania
Citation
Veterinarija ir Zootechnika, 2017, No.75, pp 30-35
AbstractFull Text

This study aimed to investigate the effect of catalase (CAT)concentrations on the Holstein bull semen diluted in egg yolk-citrate (EYC) extender and stored at 5°C. Characteristics evaluated were progressive motility (PM), plasma membrane integrity (PMI), viability and total abnormal sperm (TAS)...

Author(s)
Hakoueu, F.; Kouamo, J.; Okiwah, B. K. A.; Zoli, A. P.
Publisher
Veterinarski Fakultet Univerziteta u Sarajevu, Sarajevo, Bosnia-Herzegovina
Citation
Veterinaria (Sarajevo), 2019, 68, 1, pp 39-45
Abstract

Our objective was to evaluate the effect of a second PGF treatment (25 mg of dinoprost) or a double dose of PGF (50 mg of dinoprost) during a Resynch protocol on luteal regression and pregnancies per artificial insemination (P/AI) in lactating dairy cows. Lactating Holstein cows (n=1,100) were...

Author(s)
Barletta, R. V.; Carvalho, P. D.; Santos, V. G.; Melo, L. F.; Consentini, C. E.; Netto, A. S.; Fricke, P. M.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2018, 101, 2, pp 1730-1736
Abstract

The aim of this study was to determine if estrous expression, as measured by an automated activity monitor (AAM), affects timing and failure of ovulation of lactating Holstein dairy cows. Cows were equipped with 2 AAM, 1 neck-mounted (AAMC) and 1 leg-mounted (AAML), by 10 d postpartum and enrolled...

Author(s)
Burnett, T. A.; Polsky, L.; Manveen Kaur; Cerri, R. L. A.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2018, 101, 12, pp 11310-11320
Abstract

Fertility is one of the most economically important traits in both beef and dairy cattle production; however, only female fertility is typically subjected to selection. Male and female fertility have only a small positive genetic correlation which is likely due to the existence of a relatively...

Author(s)
Taylor, J. F.; Schnabel, R. D.; Sutovsky, P.
Publisher
Cambridge University Press, Cambridge, UK
Citation
Animal, 2018, 12, s1, pp s172-s183
Abstract

The objective of this study was to evaluate the economic performance of dairy cows managed with a voluntary waiting period (VWP) of 60 or 88 d. A secondary objective was estimating variation in cash flow under different input pricing scenarios through stochastic Monte Carlo simulations. Lactating...

Author(s)
Stangaferro, M. L.; Wijma, R.; Masello, M.; Thomas, M. J.; Giordano, J. O.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2018, 101, 8, pp 7500-7516

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