Zobrazeno 1 - 10
of 31
pro vyhledávání: '"M. J. Ducker"'
Publikováno v:
The British veterinary journal. 147(2)
The relative merits of three hormone treatments of dairy cows: (1) intravaginally administered progesterone and oestradiol benzoate; (2) intravaginally administered progesterone and injected cloprostenol; and (3) injected cloprostenol; begun 35–75
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e0234d1539882fc63315970fc8601115
https://pubmed.ncbi.nlm.nih.gov/1868322
https://pubmed.ncbi.nlm.nih.gov/1868322
Publikováno v:
Animal Science. 41:1-12
One hundred first lactation Friesian dairy heifers were used to investigate the effect of level of nutrition n i late pregnancy and for a limited period around the time of insemination on reproductive performance. The heifers were housed throughout t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d5aca93cc84ebade8fb916f61258048d
https://doi.org/10.1017/s0003356100017499
https://doi.org/10.1017/s0003356100017499
Publikováno v:
The Journal of Agricultural Science. 101:499-502
Earlier studies have reported a relationship between degree of fatty infiltration of the liver after calving and calving interval (Reid, Roberts & Manston, 1979; Reid, 1983). The aimof the present investigation was to relate the severity of fatty liv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e16f920a3c3901ee78f8570c7f1f96e
https://doi.org/10.1017/s0021859600037874
https://doi.org/10.1017/s0021859600037874
Publikováno v:
Animal Science. 41:167-175
Data from a large controlled experiment to investigate the effect of level of nutrition on reproductive performance were used to assess the value of production and blood measures as indicators of energy status in lactating dairy heifers. Live-weight
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::56a0970fea3ec86e64995d7bdfdadb0f
https://doi.org/10.1017/s0003356100027823
https://doi.org/10.1017/s0003356100027823
Autor:
M. J. Ducker, J. S. Boyd
Publikováno v:
Animal Science. 24:377-385
SUMMARYBody size was estimated for 255 Greyface ewes using five linear body dimensions. On the basis of this calculated measure combined with a subjective measure of body size 50 small and 50 large ewes were selected for use in the experiment. Precis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::97960947ab87959f1858d08225479a40
https://doi.org/10.1017/s0003356100011880
https://doi.org/10.1017/s0003356100011880
Publikováno v:
Animal Science. 34:203-211
One hundred and sixty Friesian heifers were allocated to two groups 8 or 9 weeks before artificial insemination and group-fed to gain live weight at 0·8 or 0·3 kg/day. Half the heifers of each group were moved to the other group 2 weeks before firs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b76ff005b8a22a9fe8a61c82960ffd7
https://doi.org/10.1017/s0003356100000684
https://doi.org/10.1017/s0003356100000684
Autor:
J. Fraser, M. J. Ducker
Publikováno v:
Animal Science. 22:411-414
SUMMARYAn experiment was conducted to determine the effect of time of uptake of colostrum on blood gamma-globulin concentrations, lamb survival and subsequent growth rate. Seventy-six Greyface ewes and their lambs were housed throughout the experimen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6fd3144ad188b51ec4ea2fd5b63ab70f
https://doi.org/10.1017/s0003356100035698
https://doi.org/10.1017/s0003356100035698
Publikováno v:
Animal Science. 39:9-16
One hundred and sixty Friesian heifers were divided into four groups on the basis of live weight and age. All four groups received a production ration of 15 kg maize silage, 0·5 kg straw and either 1·5 or 0·5 kg concentrates according to their mea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea92d6f6a2cb34549b68c41399a7c111
https://doi.org/10.1017/s0003356100027550
https://doi.org/10.1017/s0003356100027550
Publikováno v:
Animal Science. 32:297-306
Results are reported from four trials in which neonatal calves were given either whole milk or milk substitute containing the lactoperoxidase system.Trial 1 was a pilot trial conducted in Sweden in which calves given whole milk with the lactoperoxida
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7dba9b7cc2d0ba6c2991e2177ef8e1d0
https://doi.org/10.1017/s0003356100027197
https://doi.org/10.1017/s0003356100027197
Publikováno v:
Animal Science. 37:221-227
One hundred Friesian heifers were tail-painted between 14 and 21 days after calving. Once a week the paint strip was renewed if any paint had been removed. Over the whole period of observation the ovulation detection rate by definite signs of oestrus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b4f50bd8d6bbe4d80c623d2987de4944
https://doi.org/10.1017/s0003356100001768
https://doi.org/10.1017/s0003356100001768