Growth patterns of Holstein Friesian Dairy Cow (FH) from Birth to First Child based on Mathematical Analysis of the Gompertz Model

Abstract

This aims of this study was to estimate the bodyweight of FH dairy cows from birth to first child by knowing growth patterns and creating a standard curve for dairy cattle growth at BBPTU-HPT Baturraden dairy cow in Baturraden district, Banyumas Regency, Purwokerto, Central Java. Data obtained in the form of secondary data from births in 2005-2016 were 1437 tails and primary data were 353 tails. Data were analyzed using SAS 9.4 program with NLIN procedures (Non-Linear) using Gompertz models. The results show that the Gompertz models is easy in the calculation process with the data deviations that are close to the field of data and the models have a high degree of accuracy with the coefficient of determination (R2 ) 99.83%. The conclusion of this study is that the resulting curve of the Gompertz model can be used as a standard growth curve of Friesian Holstein dairy cattle in Indonesia from birth to first calf.

Kajian keragaman genetik sapi lokal campuran untuk penguatan peternakan sapi potong di Sulawesi Utara

“…Karena tetua mewariskan gen pada setiap anak keturunan dengan satu atau lebih gen-gennya, maka nilai pemuliaan menggambarkan jumlah nilai setiap alel didalam genotype anak. Perbedaan antara nilai genotype dan nilai pemuliaan dapat digambarkan sebagai deviasi dominan atau the dominance deviation (Van Vleck et al, 1987;Ratnasari et al, 2019). Nilai genotype didefinisikan sebagai deviasi genotype dari rataan dua phenotype homosigous (Pazokitoroudi et al, 2020).…”

Study of the quality and integrity of spermatozoa acrosome caps in frozen sexing semen Friesian Holstein cattle

“…The advantage of FH cows is that their milk production is the highest compared to other dairy cattle breeds (Gertenbach, 2005). The milk production of FH dairy cows in their country can reach 6.000-8.000 kg/head/lactation (Ratnasari et al, 2019).…”