skip to main content

Predicting the age and weight at puberty of Ongole Grade cattle using nonlinear mathematical model in Kebumen Farmer Association

*D. Maharani orcid  -  Faculty of Animal Science, Universitas Gadjah Mada, Indonesia
A. H. K. Amrullah  -  Faculty of Animal Science, Universitas Gadjah Mada, Indonesia
D. T. Widayati  -  Faculty of Animal Science, Universitas Gadjah Mada, Indonesia
S. Sumadi  -  Faculty of Animal Science, Universitas Gadjah Mada, Indonesia
A. Fathoni  -  Faculty of Animal Science, Universitas Gadjah Mada, Indonesia
M. Khusnudin  -  Kebumen PO Cattle Breeder Association (ASPOKEB), Indonesia
Open Access Copyright (c) 2017 Journal of the Indonesian Tropical Animal Agriculture under https://creativecommons.org/licenses/by-sa/4.0/.

Citation Format:
Abstract

This research is aimed to evaluate the nonlinear mathematical model in predicting the age and weight of Kebumen Ongole Grade (PO) cattle at puberty. The data used in this research was weight recordings of (768) PO cattle, ranging from calf (< 1 month) to adult (60 months), collected by Kebumen PO cattle Breeder Association (ASPOKEB) from 2013 to 2015. These cattle were reared by a group of farmers located in six sub-districts: Mirit, Lembu Purwo, Ambal, Puring, Petanahan, and Klirong in Kebumen district, Jawa Tengah Province. Brody, Bertalanfy, Logistic and Gompertz mathematical models were used to analyze the data. The analysis showed that the R2of the four models classify high in the category (R2 >0.70). Mature weight (A) of PO cattle predicted by Logistic (349 kg) and Gompertz (358 kg) were most appropriate. Out of the four models, the Logistic model was the most accurate in predicting the weight at puberty (174 kg) of PO cattle, but all observed cattle are still in the follicular phase.

Fulltext View|Download
Keywords: Inflection point; Mature weight; Logistic; Gompertz; Vaginal smear

Article Metrics:

Last update:

  1. Comparison of growth curve models for Ongole Grade cattle

    Yudi Adinata, Ronny Rachman Noor, Rudy Priyanto, Lucia Cyrilla, Pita Sudrajad. Tropical Animal Health and Production, 54 (5), 2022. doi: 10.1007/s11250-022-03254-z
  2. A novel model for estimating the body weight of Pelibuey sheep through Gray Wolf Optimizer algorithm

    Luis Alvaro Montoya-Santiyanes, Alfonso Juventino Chay-Canul, Enrique Camacho-Pérez, Omar Rodríguez-Abreo. Journal of Applied Animal Research, 50 (1), 2022. doi: 10.1080/09712119.2022.2123812

Last update: 2024-05-23 01:01:40

  1. Study on vaginal epithelial cells in Brahman cattle suspected reach puberty

    Amrullah A.. International Journal of Agricultural Technology, 14 (7), 2018.
  2. Polymorphism of the SNP g. 1180 C>T in leptin gene and its association with growth traits and linear body measurement in Kebumen Ongole Grade cattle

    Fathoni A.. Journal of the Indonesian Tropical Animal Agriculture, 44 (2), 2019. doi: 10.14710/jitaa.44.2.125-134