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Lactation extension with regard to milk, fat and protein yield in Polish Holstein-Friesian cows of Black-and-White variety

100%

Janus E., Borkowska D.

Acta Scientiarum Polonorum. Zootechnica

2011

tom 10

nr 1

In the paper the influence of daily milk yield in peak lactation, milk yield during 305 days after calving and number of cows’ calving on frequency of lactations longer than 305-day standard were analyzed. It was also estimated the influence of extended lactation on milk yield and milk composition. The research were carried out in a herd including 220 Polish Holstein-Friesian cows of Black-And-White variety. The animals were housed in a loose barn and were fed a balanced TMR. The research included 384 lactations, which were longer at least 1 day than 305-day standard, and were selected out from 488 complete lactations. It was found that frequency of extended lactations was 78.7%, and moreover the most frequently (25.0%) the period of extension lasted up to 30 days. During extension period milk production was higher by 2.5–43.0% in compare to milk yield in standard lactation. Lactation extending was slightly connected with milk yield per 1 day of complete lactation. Values of this trait were highest in the case of lactation extended maximally by 60 days.

Phytochemical screening and galactagogic attributes of Pergularia daemia (Forssk.) Chiov. leaf extract in lactating mice (Mus musculus)

80%

Patra M., Kumar Giry S., Chowdhury S., Pal J., Saha N. C., Biswas S. J.

Herba Polonica

2021

tom 67

nr 4

Ograniczanie wyników

1 Acta Scientiarum Polonorum. Zootechnica

1 Herba Polonica

1 Biswas S. J.

1 Borkowska D.

1 Chowdhury S.

1 Janus E.

1 Kumar Giry S.

1 Pal J.

1 Patra M.

1 Saha N. C.

1 2021

1 2011

Wyniki wyszukiwania

Lactation extension with regard to milk, fat and protein yield in Polish Holstein-Friesian cows of Black-and-White variety

Phytochemical screening and galactagogic attributes of Pergularia daemia (Forssk.) Chiov. leaf extract in lactating mice (Mus musculus)