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Animal Science Database

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Abstract

Artificial insemination using sex-sorted semen is employed to efficiently increase the number of female dairy calves born. Previous studies have determined that using sex-sorted semen is beneficial to improve the management, but the mechanism by which it increases cattle numbers through objective...

Author(s)
Osada, M.; Iwabuchi, H.; Aoki, T.; Sasaki, K.; Ushijima, H.; Ozawa, T.
Publisher
Wiley, Tokyo, Japan
Citation
Animal Science Journal, 2019, 90, 4, pp 597-603
Abstract

Little is known of the genetic variability in semen quality traits in cattle and their inter-relationships. The objective of the present study was to estimate genetic parameters for a range of semen quality measures. The data consisted of 35,573 ejaculates from 787 artificial insemination bulls of...

Author(s)
Berry, D. P.; Eivers, B.; Dunne, G.; McParland, S.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2019, 123, pp 202-208
Abstract

We measured the preferences for Artificial Insemination (AI) for the stocking of Sahiwal cattle by Maasai pastoralists. Multistage sampling was employed in collecting cross-sectional data of 384 respondents using structured questionnaires. An ordered probit regression model was adapted and data...

Author(s)
Khainga, D. N.; Obare, G.; Murage, A.
Publisher
CIPAV Foundation, Cali, Colombia
Citation
Livestock Research for Rural Development, 2015, 27, 4, pp Article 68
Abstract

The aim of this study was to establish the typology of cattle farms in the northern regions of Cameroon in order to reveal structural and functional characteristics that could be selected for an artificial insemination program. A survey was carried out among 54 breeders. The results showed that the ...

Author(s)
Kouamo, J.; Pa-Ana, P.
Publisher
CIRAD-EMVT (Département d'Élevage et de Médecine Vétérinaire du CIRAD), Cachan Cedex, France
Citation
Revue d'Élevage et de Médecine Vétérinaire des Pays Tropicaux, 2017, 70, 3, pp 73-80
Abstract

The present study investigated the occurrence of repeat breeding (RB) and constraints in controlling this disease in cattle and buffalo in Punjab. Livestock owners/households (720) constituted the ultimate sampling units for the study. The dairy farmers were categorized into small (5-10 animals),...

Author(s)
Malik, M. H.; Verma, H. K.; Sharma, R. K.
Publisher
Indian Council of Agricultural Research, New Delhi, India
Citation
Indian Journal of Animal Sciences, 2019, 89, 8, pp 837-842
Abstract

Background: Subfertility is one challenge facing the dairy industry as the average Holstein heifer conception rate (HCR), the proportion of heifers that conceive and maintain a pregnancy per breeding, is estimated at 55-60%. Of the loci associated with HCR, few have been validated in an independent ...

Author(s)
Kiser, J. N.; Keuter, E. M.; Seabury, C. M.; Neupane, M.; Moraes, J. G. N.; Dalton, J.; Burns, G. W.; Spencer, T. E.; Neibergs, H. L.
Publisher
BioMed Central Ltd, London, UK
Citation
BMC Genomics, 2019, 20, 576, pp (12 July 2019)
Abstract

Recent trends in dairy farm structure in the United States have included a decreasing number of farms, although farm size has increased, especially the share of milk production from very large herds (>2,500 cows). The objectives of this observational study were to describe common management...

Author(s)
Evink, T. L.; Endres, M. I.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2017, 100, 11, pp 9466-9475
Abstract

Background: Low birth weight and postnatal growth restriction are the most evident symptoms of dwarfism. Accompanying skeletal aberrations may compromise the general condition and locomotion of affected individuals. Several paternal half-sibs with a low birth weight and a small size were born in...

Author(s)
Schwarzenbacher, H.; Wurmser, C.; Flisikowski, K.; Misurova, L.; Jung, S.; Langenmayer, M. C.; Schnieke, A.; Knubben-Schweizer, G.; Fries, R.; Pausch, H.
Publisher
BioMed Central Ltd, London, UK
Citation
Genetics, Selection, Evolution, 2016, 48, 25, pp (31 March 2016)
Abstract

The Japanese Black is the most common breed of beef cattle in Japan. However, only limited data are available on the associations of season, parity, and herd size with reproductive performance in Japanese Black cattle. Therefore, the objective of the present study was to determine the associations...

Author(s)
Sasaki, Y.; Uematsu, M.; Kitahara, G.; Osawa, T.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2016, 86, 9, pp 2156-2161
Abstract

The international Brown Swiss cattle population pedigree was studied to measure genetic variations and to identify the most influential animals. Twenty-two countries provided pedigree information on 71 497 Brown Swiss bulls used for artificial insemination (AI). The total number of animals with the ...

Author(s)
Worede, G. M.; Forabosco, F.; Zumbach, B.; Palucci, V.; Jorjani, H.
Publisher
Cambridge University Press, Cambridge, UK
Citation
Animal, 2013, 7, 7, pp 1060-1066

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