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	Comparison of Growth of Male and Female Kids of Nondescript Goats in a Semi Arid Region of Nigeria
	Raji, A. O.; Asheikh, L. G.; Mohammed, I. D.
通讯作者	Raji, AO
来源期刊	IRANIAN JOURNAL OF APPLIED ANIMAL SCIENCE
ISSN	2251-628X
EISSN	2251-631X
出版年	2015
卷号	5 期号:1 页码:115-120
英文摘要	This study compared the use of five different models to describe the growth from birth to 20 weeks of age of kids from both genders of nondescript goats. Fifty nine (59) nondescript kids were weighed weekly at the university of Maiduguri livestock teaching and research farm, Nigeria and the live weights were modeled. Biologically relevant variables were estimated for each kid from the Logistic, Gompertz, Richards, Monomolecular and Weibull models. Models were compared using the following goodness of fit criteria: coefficient of determination (R-2), mean square error (MSE), standard deviation (SD) and Akaike information criteria (AIC). In both genders, all nonlinear models fitted the data well, with high R-2 ranging from 0.911 to 0.943 and 0.923 to 0.95 for male and female, respectively. In addition, the males had higher asymptotic weight than females while the reverse was observed with regards to maturing rate. Male kids had heavier inflexion weight and higher age than females for all the models. These values were however higher for Logistic than Gompertz model. The monomolecular model had higher R-2 and lower MSE, SD and AIC in both male and female kids. It can be concluded that the nonlinear growth models were suitable for estimating live weight as a function of age for both male and female of nondescript kids in Nigeria. However, the best model was the monomolecular based on model parameters and goodness of fit criteria.
英文关键词	body weight monomolecular model non-linear models Richards model
类型	Article
语种	英语
开放获取类型	DOAJ Gold
收录类别	ESCI
WOS记录号	WOS:000436764400017
WOS关键词	CURVE ; PARAMETERS ; MORKARAMAN ; MODELS ; SHEEP ; SELECTION ; AWASSI ; SHAPE
WOS类目	Agriculture, Dairy & Animal Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/331416
作者单位	[Raji, A. O.; Asheikh, L. G.; Mohammed, I. D.] Univ Maiduguri, Dept Anim Sci, Maiduguri, Nigeria
推荐引用方式 GB/T 7714	Raji, A. O.,Asheikh, L. G.,Mohammed, I. D.. Comparison of Growth of Male and Female Kids of Nondescript Goats in a Semi Arid Region of Nigeria[J],2015,5(1):115-120.
APA	Raji, A. O.,Asheikh, L. G.,&Mohammed, I. D..(2015).Comparison of Growth of Male and Female Kids of Nondescript Goats in a Semi Arid Region of Nigeria.IRANIAN JOURNAL OF APPLIED ANIMAL SCIENCE,5(1),115-120.
MLA	Raji, A. O.,et al."Comparison of Growth of Male and Female Kids of Nondescript Goats in a Semi Arid Region of Nigeria".IRANIAN JOURNAL OF APPLIED ANIMAL SCIENCE 5.1(2015):115-120.