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A study on milk and fat yield in herds of dairy-type Holstein-Friesians at Castrolanda, Parana State



A study on milk and fat yield in herds of dairy-type Holstein-Friesians at Castrolanda, Parana State



Revista da Sociedade Brasileira de Zootecnia 12(4): 720-740



In 4490 lactations of 2152 purebred and 31/32 Holstein-Friesian (HF) cows in 29 herds in Brazil, the milk yield averaged 5085.65+or-32.8 kg, fat yield 179.57+or-1.1 kg and fat percentage 3.50+or-0.1. Cows calving in summer and autumn had significantly lower milk and fat yields than those calving in winter or spring, but season of calving had no significant effect on fat percentage.

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Accession: 001156461

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