Výsledky vyhledávání - "M. J. Drennan"

Genetic parameters for carcass cut weight in Irish beef cattle

Autor: T, Pabiou, W F, Fikse, A, Näsholm, A R, Cromie, M J, Drennan, M G, Keane, D P, Berry

Publikováno v: Journal of animal science. 87(12)

The objective of this study was to estimate genetic parameters for the weights of different wholesale cuts, using an experimental and a commercial data set. The experimental and commercial data sets included 413 and 635 crossbred Belgian Blue, Charol

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::938b39a9808eedd491aa57d58edfd0e6
https://pubmed.ncbi.nlm.nih.gov/19717761

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Lifetime growth and carcass composition of heifers and steers non-implanted or sequentially implanted with anabolic agents

Autor: M. J. Drennan, M. G. Keane

Publikováno v: Animal Science. 45:359-369

Sixty-four (48 female and 16 male) spring-born Hereford × Friesian calves were used to examine the effects of sex type, heifer slaughter age and implantation with anabolic agents on growth and carcass composition. Non-implanted and implanted heifers

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b4dcc0448ebe6977f0f297fb06754d6e
https://doi.org/10.1017/s0003356100002853

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Evaluation of pelleted dried grass as a supplement to grass silage for fattening steers

Autor: M. J. Lawlor, M. J. Drennan

Publikováno v: Animal Science. 22:97-103

SummaryTwo experiments were carried out using 130 Friesian-type castrated males (steers) to compare pelleted dried grass with rolled barley as supplements to high quality grass silage for fattening steers. There were six treatments in each experiment

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7c52958bcdf104b0cdd1fccc4d722d32
https://doi.org/10.1017/s0003356100035467

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Effect of winter environment on growth of young beef cattle 2. A note on the comparison of roofless cubicles with indoor cubicles for wintering 9-month-old Hereford × Shorthorn steers

Autor: M. J. Drennan, R. B. McCarrick

Publikováno v: Animal Science. 14:107-110

SUMMARYLive-weight gains of two groups of 9-month-old Hereford × Shorthorn steers wintered in either roofless cubicles or indoor cubicles were compared during the winter of 1968/69, and during a subsequent 29 days at pasture. The animals were fed 1�

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::493b89fa636cc90a831ab6cb6559c6fc
https://doi.org/10.1017/s0003356100000325

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Effect of winter environment on growth of young beef cattle 1. Effects of exposure during winter to rain or wind and rain combined on performance of 9-month-old Friesian steers fed on two planes of nutrition

Autor: M. J. Drennan, R. B. McCarrick

Publikováno v: Animal Science. 14:97-105

SUMMARYThree experiments were conducted to compare the performance of 9-month-old Friesian steers wintered in three environments, (a) conventional cattle houses, (b) wind-sheltered roofless sawdust pads and (c) unsheltered roofless sawdust pads. With

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::61eb8546d75193e55d7a8d8bbb1faf6a
https://doi.org/10.1017/s0003356100000313

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Effect of Plane of Nutrition During Late Pregnancy on the Incidence of Calving Problems in Beef Cows and Heifers

Autor: M. J. Drennan

Publikováno v: Calving Problems and Early Viability of the Calf ISBN: 9789400993174

In two experiments, beef heifers (approximately 370 kg initially) were fed on three planes of nutrition during the last three months of pregnancy. Daily weight increases pre-partum were 0.55, 0.14 and -0.30 kg for high, moderate and low plane heifers

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::85cd5a82125fe5851416c88a0ac037bc
https://doi.org/10.1007/978-94-009-9315-0_25

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Summer Grazing and Winter Feeding Studies with Suckler Cows

Autor: M. J. Drennan

Publikováno v: Grassland Beef Production ISBN: 9789400960268

Stocking rates of 2.47 (low), 3.71 (medium) and 4.94 (high) spring calving cows plus calves per ha were compared during three grazing seasons. Cows at the high stocking rate had lowest daily gains in all three years. Prior to early August, stocking r

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::16867def93035b837c1b18c1ce944dc6
https://doi.org/10.1007/978-94-009-6024-4_4

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A comparison of markers for estimating magnitude of rumen digestion

Autor: W. N. Garrett, J. H. G. Holmes, M. J. Drennan

Publikováno v: The British journal of nutrition. 24(4)

1. Two experiments were carried out with sheep and cattle receiving high-concentrate rations to estimate the amount of digestion taking place in the rumino-reticulum and omasum. Two techniques were used for the collection of samples of abomasal conte

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74d082fd86fb8d136aeb9d15b14f49e8
https://pubmed.ncbi.nlm.nih.gov/5484733

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Growth and Carcass Composition of Implanted and Non-Implanted Heifers and Steers Reared Together

Autor: M. G. Keane, M. J. Drennan

Publikováno v: Proceedings of the British Society of Animal Production (1972). 1986:23-23

The national cow herd consists of 1.64m dairy and 0.43m beef cows. They produce a total of 1.76m reared calves annually. Of these 0.42m heifers go as herd replacements, leaving 0.46m heifers and 0.88m males available for beef production. There is a 2

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e13443c1e76f63bd690c27f0c90ec58f
https://doi.org/10.1017/s0308229600015348

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