1248 The influence of genetic potential on lactation curve and survival response of commercial dairy cattle to early lactation non-steroidal antiinflammatory (NSAID) drug administration

2016 ◽  
Vol 94 (suppl_5) ◽  
pp. 601-602
Author(s):  
A. J. Carpenter ◽  
J. Ehrlich ◽  
L. G. D. Mendonça ◽  
M. J. Brouk ◽  
B. J. Bradford
2011 ◽  
Vol 53 (1) ◽  
Author(s):  
Fredrik Andersen ◽  
Olav Østerås ◽  
Olav Reksen ◽  
Nils Toft ◽  
Yrjo T Gröhn

1998 ◽  
Vol 1998 ◽  
pp. 108-108
Author(s):  
J. A. Fregonesi ◽  
J.D. Leaver

Space allowance could be an important variable affecting production, health, reproductive performance and behaviour of dairy cattle. Also, high and low yielding cows may have different ways of coping with insufficient space allowance. The aim of this experiment was to study the influence of space allowance and milk yield level on the performance and behaviour of strawyard housed dairy cows.The experiment was carried out using 24 Holstein Friesian cows with two groups in early lactation of high (over 30 kg/day milk yield) and two groups in late lactation of low yield (under 25 kg/day milk yield). The groups were allocated to strawyard systems with low stocking density (bed area/cow = 9 m2; pen area/cow = 13.5 m2; feed face width/cow = 1.5 m) or high stocking density (bed area/cow = 4.5 m2; pen area/cow = 6.75 m2; feed face width/cow = 0.75m) conforming to a changeover design with two periods, each of four weeks. The cows were fed a total mixed ration ad libitum and 2kg/cow/day of concentrate in the milking parlour. All animals were milked twice daily.


2004 ◽  
Vol 87 (12) ◽  
pp. 4269-4277 ◽  
Author(s):  
M.A. Bryan ◽  
M.T. Socha ◽  
D.J. Tomlinson

1981 ◽  
Vol 52 (6) ◽  
pp. 480-482
Author(s):  
Tuguyoshi SUGANO ◽  
Kinichi WATANABE ◽  
Yasuhiro MINESAKI ◽  
Tokukazu IZUMI ◽  
Hisashi SAITO ◽  
...  

2013 ◽  
Vol 7 ◽  
pp. GRSB.S12005 ◽  
Author(s):  
Haji Akbar ◽  
Eduardo Schmitt ◽  
Michael A. Ballou ◽  
Marcio N. Corrêa ◽  
Edward J. DePeters ◽  
...  

Author(s):  
N. V. Sulyga ◽  
G. P. Kovaleva ◽  
M. N. Lapina ◽  
V. A. Vitol

This article presents the analysis of the state of dairy cattle industry and its short-term development prospects in connection with the crisis of 2020.  For the purposes of objective assessment, we considered the period of 2015-2019 and presented the dynamics of the main statistical indicators with significant state support (grants, subsidies, etc.) for agricultural producers. In 2019 the total amount of disbursed funds was more than 1.4 billion rubles, most of which were directed to the development of dairy cattle breeding. According to the results of 2019, 73.9% in milk-production structure accrue to personal subsidiary farms, 19.6% - to agricultural organizations and 6.5% - to private farms. The significant share of produced milk in the Stavropol territory accrues to personal subsidiary farms; at the same time, the increase in milk production was 26.5% (643.8 thousand tons). Alongside the reduction of livestock in the general population of milk cattle in the Stavropol territory it is obvious that the genetic potential of cows increases due to the decrease of low-productivity animals and wide-scale import of high-producing breeding heifers, both from abroad and domestic market. The topical problems of the industry are low reproductive qualities of cows (the output of calves in agricultural organizations is only 75%), the violations of feeding technologies and animals housing due to insufficient availability of specialists. In general, industry development rate is quite high and has significant potential for production increase in short-term prospect, provided that the existing state-support programs continue. The most relevant trends are the increase of genetic potential of productivity in Stavropol livestock population, the adoption of state-of-the-art technologies for livestock keeping and feeding, as well as the development of farming and the niche of organic products.


2020 ◽  
Vol 17 ◽  
pp. 00158
Author(s):  
Alexander Lyubimov ◽  
Ekaterina Martynova ◽  
Yulia Isupova ◽  
Ekaterina Yastrebova ◽  
Elena Achkasova

Currently an increasing attention is paid to breeding animals ensuring the greatest genetic progress of populations in livestock productivity, i.e. stud bulls. Hence, the study of the realization degree of genetic potential of productivity of dairy cattle with different ecogenesis in the conditions of industrial and traditional technology of milk production seems quite relevant. The study revealed that the degree of realization of genetic potential of stud bulls in traditional (tied-up system) and industrial (cubicle system) technology is different.


2019 ◽  
Vol 52 (3) ◽  
pp. 1403-1411
Author(s):  
K.K.T.N. Ranaweera ◽  
M.B.P. Kumara Mahipala ◽  
W.M.P.B. Weerasinghe

2007 ◽  
Vol 2007 ◽  
pp. 118-118
Author(s):  
N.R. Lambe ◽  
J. Conington ◽  
K.A. McLean ◽  
L. Bunger ◽  
G. Simm

Previous studies using X-ray computed tomography (CT) of Scottish Blackface hill ewes have shown that carcass fat, internal fat and muscle are depleted during pregnancy and early lactation and deposited during late lactation and the dry period (Lambe et al., 2003a). Muscle weights and proportions throughout the year are positively genetically correlated with total litter weight reared, largely due to increased litter size. Average weights of lambs reared were positively correlated with carcass fat weight or proportion pre-lambing and internal fat weight pre-mating, but negatively correlated with internal fat proportion pre-lambing (Lambe et al., 2005). However, is genetic potential to mobilise and regain increased amounts of tissue during the year positively associated with the ability to produce more and heavier lambs? The aim of this study was to address this question by relating total loss and gain of fat and muscle in ewes during the annual cycle with lamb production traits.


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