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Abstract

ARNOLD, F. Utilization of proved sires and sons of proved sires: 578-579. At present only about 1 sire out of 8 is alive when proved and worthy of further use. There is little chance of increasing the use of proved sires except through their sons, or through programmes designed to prove bulls at an ...

Citation
Journal of Dairy Science, 1940, 23, pp 473-586
Abstract

THE av. age at which 41 Holstein-Friesian cows reached sexual maturity was 9.6 mths., when live weight averaged 239.4 kg. The av. length of the oestrous cycle in the case of 1134 Holstein cows was 22.5 days. The first post-partum oestrus (based on data for 123 cows) occurred 58.3 days after...

Author(s)
Masuda, S.; Onishi, N.; Kudo, A.
Citation
Research Bulletin. zootech. Exp. Stn., 1950, 56,
Abstract

Three methods of regulating the oestrous cycle in Hereford cattle were studied in 3 separate trials. In Trial I an attempt was made to bring 27 Hereford heifers into oestrus during a target period of 3 days by altering the naturally occurring cycles, where necessary, by recycling by means of...

Author(s)
Hansel, W.; Malven, P. V.; Black, D. L.
Citation
Journal of Animal Science, 1961, 20, pp 621-625
Abstract

Rollinson discussed the literature, with some 140 references. Attention is drawn to the similarity between sexual excitement and other physiological reactions (anger, fear, pain, epilepsy). All five states have the following in common-diminished sensory perception, dilatation of the pupils,...

Author(s)
Smith, J.
Publisher
Comm. for Technical Cooperation in Africa South of the Sahara, Publ. Bureau, London, UK
Citation
Bulletin of epizootic diseases of Africa, 1962, pp 209-217
Abstract

This study was designed to evaluate the effect on fertility of 0.4 mg. per 1b. body weight per day of MAP when given under controlled conditions to 15- to 18-mth-old Holstein heifers weighing 630-825 1b. ; the animals were concurrently under trial in a nutritional experiment (2 types of hay). MAP...

Author(s)
Fahning, M. L.; Schultz, R. H.; Graham, E. F.; Donker, J. D.; Mohrenweiser, H. W.
Citation
Journal of Reproduction and Fertility, 1966, 12, pp 569-571
Abstract

This chapter contains information on cattle breeding and reproduction, including descriptions of some dairy and beef cattle breeds, genetic improvement, the use of reproductive technologies (artificial insemination and embryo transfer), the oestrous cycle, conception, pregnancy diagnosis, calving...

Author(s)
Roberts, K.
Publisher
CABI, Wallingford, UK
Citation
Principles of cattle production, 2001, pp 108-141
AbstractFull Text

The experiment was conducted to observe the effect of Buserelin acetate administration on improvement of conception rate in crossbred cows, suffering from repeat breeding syndrome (RBS). Total sixteen crossbred cows (Gir cows and their crosses with Jersey & Holstein Friesian) with regular oestrous...

Author(s)
Rangnekar, M. N.; Bakshi, S. A.; Deopurkar, V. L.; Chinchkar, S. R.; Birade, H. S.; Gulavane, S. U.; Hol, B. G.; Jadliav, P. D.
Publisher
Bombay Veterinary College, Alumni Association, Bombay, India
Citation
Journal of Bombay Veterinary College, 2005, 13, 1/2, pp 26-27
Abstract

The present study investigated how the timing of the administration of estradiol benzoate (EB) impacted the synchronization of ovulation in fixed-time artificial insemination protocols of cattle. To accomplish this, two experiments were conducted, with EB injection occurring at different times: at...

Author(s)
Ayres, H.; Martins, C. M.; Ferreira, R. M.; Mello, J. E.; Dominguez, J. H.; Souza, A. H.; Valentin, R.; Santos, I. C. C.; Baruselli, P. S.
Publisher
Elsevier, Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2008, 109, 1/4, pp 77-87
Abstract

The reason why cows carrying the mutation of complex vertebral malformation (CVM) show poor reproductive capability although they carry only one mutant allele is still not fully understood. Monitoring the progesterone profiles during oestrous cycle and early pregnancy in carrier cows might help...

Author(s)
Ghanem, M. E.; Suzuki, T.; Kasuga, A.; Nishibori, M.
Publisher
Blackwell Publishing, Berlin, Germany
Citation
Reproduction in Domestic Animals, 2010, 45, 4, pp 729-733
Abstract

This study was undertaken to compare the efficiency of norgestomet ear implant and controlled intravaginal drug release (CIDR) device on the oestrus response and fertility rate in crossbred postpartum anoestrus Jersey cows. 40 cows were divided into 2 treatment groups: group I (n=10) - cows were...

Author(s)
Murugavel, K.; Antoine, D.; Raju, M. S.
Publisher
Indian Veterinary Association, Chennai, India
Citation
Indian Veterinary Journal, 2010, 87, 8, pp 763-765

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