Effect of mastitis on milk yield and composition in Black-and-White (cb) pure breed and cb x hf crossbred cows. 2. Lactation month
1993
Czaplicka, M. | Puchajda, Z. | Iwanczuk, K. | Iwulski, Z. (Akademia Rolniczo-Techniczna, Olsztyn (Poland))
Studies on 312 cows in 3 herds were carried out. An increase of incidence and frequency of mastitis as lactation progress was observed. A decrease of milk and an increase of protein and fat content in milk from the first to tenth month of lactation was observed
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