This shows you to definitely crossbreed cows is intimately way more precocious than just tropical cattle ( Wassie mais aussi al
So you’re able to most readily useful see the effect of this new crossbreeding on sexual precocity away from crossbreed pet, brand new AFC was assessed based on: hybrid sort of, competition away from sire mothers (bull and you may inseminated local cows), hybridization height and you will stock farms
Data extracted from the analysis of herd records were entered in Excel. The descriptive statistical analysis of the age at first calving (calculation of frequencies, means, standard deviations, minimum and maximum) was made with the XLSTAT software (6.1.9 release). These parameters were analyzed by ANOVA and the results were compared using the Newman-Keuls test. Differences were considered significant for p < 0.05.
The new imply years to start with calving for all types build is actually ± months, representing whenever three years (2 yrs 11 days 19 days ± eleven months twenty four hours). The minimum are months therefore the limit is days. To have fifty% out-of heifers, earliest calving is at weeks. The original services were held typically from the ± weeks ( so you’re able to weeks).
The latest suggest AFC of the crossbreeds was less than those individuals claimed one of several Zebu according to the tropics at over 40 days reported in lot of degree ( Rahman ainsi que al., 2016 ; Tellah ainsi que al., 2015a , 2015b ; Bashir and Este Zubeir, 2013 ; Sokouri mais aussi al., 2010 ; Bayemi et al., 2005 ). , 2015 ). Particular article authors enjoys reported performance most near to our very own observance on the various other crossbreeds in the Africa, notwithstanding cow breeds included in this new try: 34 months among the many Montbeliard crossbreeds Political Sites dating apps for iphone into the Algeria ( Madani and you will Mouffok, 2008 ) and you will Morocco ( Srairi and you may Mousili, 2014 ), ± 0.43 months in the Girolando hybrid from inside the Benin ( Doko et al., 2012 ). Read More