PRODUKSI SUSU SAPI PERAH FRIESIAN HOLSTEIN (FH) PADA PERIODE LAKTASI YANG BERBEDA (Milk Production of Friesian Holstein (FH) Cows at Different Lactation Periods)
نویسندگان
چکیده
منابع مشابه
Comparison of Different Lactation Curve Models to Describe Lactation Curve in Moroccan Holstein-Friesian Dairy Cows
In this study, the incomplete gamma function, an exponential function, a mixed-log function and a polynomial function were evaluated to describe the lactation curve in Moroccan Holstein-Friesian dairy cows. Data from 1990 to 1999, comprising 77130 monthly milk yields of 6029 dairy cows in 280 dairy herds, were used. Edits were carried out by considering the lactation length (5 d and
متن کاملEstimates of Genetic and Phenotypic Parameters for Milk Production in Moroccan Holstein-Friesian Cows
To satisfy the growing demand of the human population for milk, the Moroccan government set up a plan in 1975 to increase milk production. The most important genetic strategies were the introduction of improved dairy cattle, the institution of milk recording, and the extension of artificial insemination (AI). Thus, more than 10,000 Holstein and Friesian heifers were purchased annually from Euro...
متن کاملSLC27A1 SNPs in relation to breeding value of milk production traits in Polish Holstein-Friesian cows*
1 Department of Genetics and Animal Breeding, West Pomeranian University of Technology in Szczecin, Doktora Judyma 6, 71-466 Szczecin, Poland 2 Department of Animal Genetics and Animal Breeding, National Research Institute of Animal Production, Krakowska 1, 32-083 Balice/Kraków, Poland 3 Department of Genetics, Wrocław University of Environmental and Life Sciences, Kożuchowska 7, 51-631 Wrocław...
متن کاملBlood metabolic profiles in Uruguayan Holstein and Uruguayan Holstein x New Zealand Holstein-Friesian dairy cows
Blood metabolic profiles were determined from 40 days prepartum to 60 days postpartum in Uruguayan Holstein (UH) (n = 13) and UH x New Zealand Holstein-Friesian first cross (UH-NZHF) (n = 13) cows with seven in each group experiencing their second lactation (L2) and six experiencing their third lactation (L3). Non-esterified fatty acids increased around calving and tended to be greater in UH-L3...
متن کاملBody condition score and live-weight effects on milk production in Irish Holstein-Friesian dairy cows.
The objective of the present study was to quantify the relationships among body condition score (BCS; scale 1 to 5), live weight (WT) and milk production in Irish Holstein-Friesian spring calving dairy cows. Data were from 66 commercial dairy herds during the years 1999 and 2000. The data consisted of up to 9886 lactations with records for BCS or WT at least once pre-calving, or at calving, nad...
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ژورنال
عنوان ژورنال: Jurnal Ilmu dan Teknologi Peternakan
سال: 2020
ISSN: 2476-9444,2086-6216
DOI: 10.20956/jitp.v8i2.10132