The present investigation was undertaken to estimate the effect of different non-genetic factors affecting the growth performance traits of Sonadi sheep. The detailed information of 1396 Sonadi sheep regarding growth performance traits maintained over the period of 2019-2023 under the Mega Sheep Seed Project (ICAR) at College of Veterinary and Animal Science, Navania, Vallabhnagar, Udaipur district of Rajasthan was collected. The various growth performance traits like body weight, relative growth rate (RGR) and growth efficiency (GE) were studied and data's were classified into different groups (year of birth, season of birth, sex of animal and type of lambing) for different traits (BWT, 3WT, 6WT, 9WT, 12WT, 0-3, 3-6, 6-9, 9-12, 0-3, 3-6, 6-9, and 9-12) under investigation. Lambings were categorized into three seasons as monsoon, winter and summer lambing season. On the basis of year data was categorized into eight categories and coding from 1-8. The data related to gender of lamb was classified according to male and female and coded as 1 and 2, respectively while according to type of lambing, data was categorized into 2 categories i.e. single and twin and coded as 1 for single and 2 for twin. The data was analyzed using one two data set namely body weight and relative growth rate and growth efficiency. The effects of different non-genetic factors on the different body measurement were estimated through least square analysis method of Harvey (1990) software. The effects of different non-genetic factors on the growth performance were calculated from the general linear model.

RGR Sheep Seed, Sonadi Sheep

To determine the impact of various non-genetic factors impacting the growth performance features of Sonadi sheep, the current inquiry, named "Studies on growth performance traits of Sonadi sheep at farm condition", was conducted. The comprehensive data on 1396 Sonadi sheep's growth performance attributes was kept between 2019 and 2023 as part of the Mega Sheep Seed Project (ICAR) at the College of Veterinary and Animal Sciences in Navania, Vallabhnagar, Udaipur (Rajasthan). The present experiment was conducted to study the growth performance of Sonadi sheep in terms of body weights, relative growth rate and growth efficiency along with the study of effect of non-genetic factors on growth related traits of Sonadi sheep at an organized farm. The various growth performance traits like body weight, relative growth rate (RGR) and growth efficiency (GE) were studied after that data was classified into different groups (year of birth, season of birth, sex of animal and type of lambing) for different traits i.e., BWT, 3WT, 6WT, 9WT, 12WT, RGR1 (0-3), RGR2 (3-6), RGR3 (6-9), RGR4 (9-12), GE1 (0-3), GE2 (3-6), GE3 (6-9), and GE4 (9-12) under investigation.

Shyam Singh Lakhawat and S.P. Tailor (2023). Estimation of Growth Curve Parameters using Non-Linear Growth Curve Models in Sonadi Sheep. Biological Forum – An International Journal, 15(11): 627-632.