The determination of growth in Akkeci (White goat) female kids by various growth models

Abstract

This study aimed to determine the growth of 26 Akkeci (White goat = Saanen × Kilis (Bı) crossbreed) female kids by measuring their body weight, withers height, body length, heart girth depth, heart girth width, heart girth circumference, leg circumference and volume index in two-week intervals from birth to 500 days of age and by using different growth models (Monomolecular, Gompertz, Weibull and Richards). An approximate volume index was calculated by multiplying the values of heart girth depth, body length and heart girth width. The best one among these models was determined in respect of RMS (square root of Residual Means Squares which is calculated from the Square Root of Error Mean Square in ANOVA), R 2 %, Adjusted R 2 %, Mallow's C p statistic, and asymptotic correlation coefficients criteria. As a result, it was determined that Weibull growth model (which is not concerned with Weibull statistical distribution but is related to parameters of Weibull distribution) was suitable for the above-mentioned material and studied traits.

Estimation of growth curve parameters in Beetal goats

“…The value of R 2 was higher because one person recorded all the data around the year and animals were selected in the beginning of the study and closely monitored. These results were in accordance with Karakus et al (2008) and Topal et al (2004) Karakus et al (2008), Topal et al (2004) and Kor et al (2006) reported R 2 ranging from 97.8 to 99.7 but Tsukahara et al (2008) reported a slightly lower value (93.7 %) for this model. The present findings also matched with Akbas et al (1999) who by comparing different models reported that Brody model had a good fit with highest R 2 .…”

“…These curves have been used to estimate mature body weight and increase in liveweight in goat and sheep by many research workers (Kor et al 2006, Jenkins & Leymaster 1993, Nasholm & Danell 1990, Nasholm 1990, Salah et al 1988, Moore 1986.…”

Production Performance of Chicken under Farmers’ Management and Their Roles at Urban Household Economy in Southern Ethiopia

“…The age at slaughter for the native chickens were, however, lower than those reported by [31], this might be ascribed to their genetic makeup and several non-genetic factors [32]. The slaughtering age is correlated with growth which in turn is influenced by the feed availability besides other environmental factors.…”

Model Kurva Pertumbuhan Pra Sapih Kambing Saburai di Kabupaten Tanggamus

“…Kurva pola pertumbuhan sangat berguna pada usaha peternakan.Kurva pola pertumbuhan ini digunakan untuk memperkirakan berat badan dewasa dan peningkatan berat hidup pada kambing dan domba oleh banyak peneliti (Kor et al, 2006;Jenkins and Leymaster 1993). Kurva pertumbuhan dapat digunakan untuk pemilihan ternak karena dapat memberikan prediksi pertumbuhan di masa yang akan datang pada tingkat usia tertentu (Tekel et a., 2005).…”