Zobrazeno 1 - 10
of 408
pro vyhledávání: '"K. L. Macmillan"'
Autor:
Cesaroni, G.1 gcesaroni@sincrovac.com.ar, Butler, H. M.2
Publikováno v:
Taurus. dec2024, Vol. 26 Issue 104, p49-55. 7p.
Autor:
A. B. Pleasants, K. L. Macmillan
Publikováno v:
Animal Science. 67:269-276
A model which was originally developed to derive the probability density of a calving distribution for beef cows under natural breeding has been modified to incorporate the effects of using oestrous synchronization at the beginning of the breeding pe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::399544fa70916a9d217a12cbbe53f247
https://doi.org/10.1017/s135772980001002x
https://doi.org/10.1017/s135772980001002x
Publikováno v:
New Zealand Journal of Agricultural Research. 39:357-370
Pasture dry matter intake (DMI), milk yield and composition, and calculated feed conversion efficiencies (FCE), were monitored throughout lactation for primiparous Friesian (n = 16; F) and Jersey (n = 16; J) cows calved at either high (H) or low (L)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::045289f327b925f8d953fc7e678dc7e1
https://doi.org/10.1080/00288233.1996.9513195
https://doi.org/10.1080/00288233.1996.9513195
Publikováno v:
New Zealand Veterinary Journal. 42:89-92
Oestrone sulphate concentrations were measured by radioimmunoassay in milk samples obtained weekly during pregnancy from Jersey and Friesian cows, with each breed grazed at two different stocking rates. Mean milk yields differed significantly (P
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5eb708204385bf9789f0c4fe49458c46
https://doi.org/10.1080/00480169.1994.35793
https://doi.org/10.1080/00480169.1994.35793
Publikováno v:
Biology of reproduction. 68(3)
Patterns of ovarian follicle development were monitored daily in Holstein-Friesian cows that had two (n = 4) or three (n = 4) waves of ovarian follicle development during a single estrous cycle. The plasma from daily blood samples was used in assays
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::c71500381f0d8e31c82e8d2156f34d58
https://pubmed.ncbi.nlm.nih.gov/12604631
https://pubmed.ncbi.nlm.nih.gov/12604631
Publikováno v:
Critical reviews in therapeutic drug carrier systems. 15(4)
This paper describes the estrus cycles of a number of livestock breeds and reviews the controlled-release drug delivery systems that are currently available for the purpose of controlled breeding. The bovine estrus cycle is reviewed in detail, and th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::208c49e484d0bbd21d8e2926c201be4e
https://pubmed.ncbi.nlm.nih.gov/9736416
https://pubmed.ncbi.nlm.nih.gov/9736416
Autor:
A H Kirton, K L Macmillan
Publikováno v:
Journal of animal science. 75(2)
From 84 to 93% of New Zealand's annual production from livestock is exported to over 100 markets throughout the world. This export dependence has produced production systems that are low-cost because the Mediterranean maritime climate allows animals
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8529ec1507d5b67c752d67cf8ad7043f
https://pubmed.ncbi.nlm.nih.gov/9051476
https://pubmed.ncbi.nlm.nih.gov/9051476
Publikováno v:
Journal of reproduction and fertility. Supplement. 49
The focus of this review is the physiological effects of undernutrition on ovarian follicle growth and the occurrence of ovulation in postpartum cows. Evidence suggests that moderate levels of underfeeding, before or after calving, may interfere with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::f0987b6ba22e215ad2919a85c34dfd8e
https://pubmed.ncbi.nlm.nih.gov/7623336
https://pubmed.ncbi.nlm.nih.gov/7623336
Autor:
K L, Macmillan, W W, Thatcher
Publikováno v:
Biology of reproduction. 45(6)
Three experiments were conducted to examine effects of Buserelin, a potent agonist of gonadotropin-releasing hormone, on characteristics of ovarian follicles in cycling cows and heifers. In experiment 1, heifers were injected once with 10 micrograms
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::19401eaa01443f448b96e7afb2765163
https://pubmed.ncbi.nlm.nih.gov/1805991
https://pubmed.ncbi.nlm.nih.gov/1805991
Autor:
K. L. Macmillan, J. M. Borman
Publikováno v:
Reproduction, Fertility and Development. 15:18
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::34bb3647cd41e556da0a585c50625d2b
https://doi.org/10.1071/srb03ab18
https://doi.org/10.1071/srb03ab18