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1

Changes of hepatic and oxidative stress parameters during early lactation in sheep with postpartum disturbances

100%
Wojcik M., Bobowiec R., Cwiok E.
Acta Scientiarum Polonorum. Medicina Veterinaria
|
2006
|
tom 05
|
nr 1
2

Effect of concentrate feeding before calving on feed intake, metabolic profile and performance of early lactation cows

80%
Strzetelski J. A., Osieglowski S., Dymnicka M.
Annals of Animal Science
|
2010
|
tom 10
|
nr 2
139-155
3

Beta-hydroxybutyrate, glucose, calcium, phosphorus, and vitamin C concentrations in blood of dairy cows with subclinical ketosis during the early lactation

80%
Zhang Z., Liu G., Li X., Wang Z., Kong T., Zhang N., Guo C.
Bulletin of the Veterinary Institute in Puławy
|
2009
|
tom 53
|
nr 1
71-74
The objective of this study was to examine the association between β-hydroxybutyrate (BHBA) and glucose, calcium (Ca), phosphorus (P), and vitamin C concentrations in dairy healthy and with subclinical ketosis cows during an early lactation period. The blood from 99 healthy cows and 26 sub-clinically ketotic cows within the first two months of lactation was sampled. Serum concentration of BHBA was measured by enzymatic-rate method, glucose by oxidase method, and P by colorimetric method. These tests were performed in a biochemical auto-analyser. Serum Ca concentration was measured by atomic absorption spectrometer followed by acid digestion. Vitamin C was measured by HPLC. The results showed that in ketotic cows serum BHBA was significantly increased (P<0.01) and glucose and Ca concentrations were significantly decreased (P<0.01) as compared to healthy cows, while vitamin C and P concentrations were similar in the both groups of cows (P>0.05). The serum BHBA concentration was negatively correlated with the serum glucose and Ca concentrations (P<0.01). Vitamin C and P status of cows with subclinical ketosis was not affected by BHBA. Serum Ca concentration can be used as a reference index for the diagnosis of subclinical ketosis.
4

Impact of clinical lameness, calving season, parity, and month of lactation of milk, fat, protein, and lactose yields during early lactation of dairy cows

80%
Olechnowicz J., Jaskowski J.
Bulletin of the Veterinary Institute in Puławy
|
2010
|
tom 54
|
nr 4
The aim of this paper was to investigate the impact of clinical lameness in Polish Holstein-Friesian dairy cows on milk yield as well as on fat, protein, and lactose yields during early lactation (120 d). The dataset includes 312 monthly test-day milk yields and milk composition records from 78 cows, which calved from October 2008 to April 2009. Twice a week, during the first 120 d postpartum, the cows were examined for lameness and they were scored fortnightly according to a 5-point locomotion scoring system. Factors affecting milk yield and milk components included calving season, parity, month of lactation, and degree of lameness. In cows, which were clinically lame for a month and which were clinically lame for more than a month (maximum per 2 months), the total mean reduction in milk yield per 120-d lactation was approximately 308 and 283 kg, respectively, as compared with cows, which were never lame in early lactation.
5

The efficiency of the replacement of protein meal by DDGS - dried distiller grains with solubles in the ration for dairy cows during early lactation

80%
Szulc T., Zachwieja A., Demkowicz M., Newlacil I., Pecka E.
Electronic Journal of Polish Agricultural Universities. Series Animal Husbandry
|
2011
|
tom 14
|
nr 2
6

Effects of early lactation concentrate level and glucogenic feed on feed intake, milk production and energy metabolism in dairy cows and heifers

80%
Kokkonen T., Tesfa A., Tuori M., Hissa K., Jukola E., Syrjala-Qvist L.
Journal of Animal and Feed Sciences
|
2000
|
tom 09
|
nr 4
7

Study of serum growth hormone, 3,5,3'-triiodothyronine, thyroxine, total protein and free fatty acids levels during parturition and early lactation in ewes

80%
Altiner A.
Bulletin of the Veterinary Institute in Puławy
|
2006
|
tom 50
|
nr 1
8

Wplyw pasz gospodarskich na profil metaboliczny i dobowa wydajnosc mleczna krow w pierwszych miesiacach laktacji

71%
Malecki J.
Acta Scientiarum Polonorum. Zootechnica
|
2003
|
tom 02
|
nr 2
65-75
9

Nasiona rzepaku jako zrodlo energii dla krow we wczesnym okresie laktacji

61%
Strzetelski J., Stasiniewicz T., Kwiatanowska J.
Acta Agraria et Silvestria. Series Zootechnica
|
1993
|
tom 31
99-107
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